Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.91626
Juan Li, Wei Liu, Xinxing Zhang
How to cite item Li, J., Liu, W, & Zhang, W. (2020). Evaluation algorithm of Alhagi Sparsifolia desertification control under different irrigation amounts. Earth Sciences Research Journal, 24(4), 449-457. DOI: https://doi.org/10.15446/esrj.v24n4.91626 Desertification control is an important issue that must be considered in modern society. In order to effectively improve the accuracy and practicability of the evaluation algorithm of desertification control effect, the Alhagi sparsifolia index under different irrigation amount was taken as the research object, and the evaluation algorithm of desertification control effect was proposed. In the “vegetation-sandstorm-soil” index system, a number of indexes were selected according to the core environmental parameters of Alhagi sparsifolia and grassland desertification. And the analytic hierarchy process, remote sensing, geographic information system, and landscape technology were used to assign index weights of desertification control capacity, which were calculated by multiple discriminant matrices. Finally, the data regression analysis was performed based on remote sensing and computer image information screening and processing to determine the final evaluation results. The experimental data show that the true positive rate of the algorithm in this paper is between 160 and 200, which is within a large range of advantages, indicating that the overall evaluation accuracy of the algorithm is high and the evaluation effect is perfect. ABSTRACT Evaluation algorithm of alhagi sparsifolia desertification control under different irrigation amounts
{"title":"Evaluation algorithm of alhagi sparsifolia desertification control under different irrigation amounts","authors":"Juan Li, Wei Liu, Xinxing Zhang","doi":"10.15446/ESRJ.V24N4.91626","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.91626","url":null,"abstract":"How to cite item Li, J., Liu, W, & Zhang, W. (2020). Evaluation algorithm of Alhagi Sparsifolia desertification control under different irrigation amounts. Earth Sciences Research Journal, 24(4), 449-457. DOI: https://doi.org/10.15446/esrj.v24n4.91626 Desertification control is an important issue that must be considered in modern society. In order to effectively improve the accuracy and practicability of the evaluation algorithm of desertification control effect, the Alhagi sparsifolia index under different irrigation amount was taken as the research object, and the evaluation algorithm of desertification control effect was proposed. In the “vegetation-sandstorm-soil” index system, a number of indexes were selected according to the core environmental parameters of Alhagi sparsifolia and grassland desertification. And the analytic hierarchy process, remote sensing, geographic information system, and landscape technology were used to assign index weights of desertification control capacity, which were calculated by multiple discriminant matrices. Finally, the data regression analysis was performed based on remote sensing and computer image information screening and processing to determine the final evaluation results. The experimental data show that the true positive rate of the algorithm in this paper is between 160 and 200, which is within a large range of advantages, indicating that the overall evaluation accuracy of the algorithm is high and the evaluation effect is perfect. ABSTRACT Evaluation algorithm of alhagi sparsifolia desertification control under different irrigation amounts","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45857298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.92151
Yunxiang Zhang, Bin Wang, Lei Zhang
How to cite item Zhang, Y., Wang, B., & Zhang, L. (2020). HighPrecision Gps Measurement Method Without Geographical Restrictions Using CrowdSensing Technology. Earth Sciences Research Journal, 24(4), 491-497. DOI: https://doi. org/10.15446/esrj.v24n4.92151 In order to improve the flexibility of GPS measurement, a high-precision GPS measurement method that is not restricted by the geographical location under crowd-sensing technology was proposed. The performance of the crowdsensing network was improved through a regular hexagon-based crowd-smart big data sensing network deployment mechanism. The GPS /SINS/DR fast and high-precision combined measurement methods were used to achieve high-precision measurement without geographical restrictions. It has been verified that the proposed method in this paper has much better stability in the deployment strategy of a regular hexagon than that of the square. The proposed method can achieve fast acquisition of satellite signals and high-precision positioning, and its measurement accuracy in the low-latitude city and high-latitude city is higher than the online measurement method based on Google Earth, indicating that it has significant application value. ABSTRACT High-precision GPS measurement method without geographical restrictions using crowd-sensing technology
{"title":"High-precision GPS measurement method without geographical restrictions using crowd-sensing technology","authors":"Yunxiang Zhang, Bin Wang, Lei Zhang","doi":"10.15446/ESRJ.V24N4.92151","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.92151","url":null,"abstract":"How to cite item Zhang, Y., Wang, B., & Zhang, L. (2020). HighPrecision Gps Measurement Method Without Geographical Restrictions Using CrowdSensing Technology. Earth Sciences Research Journal, 24(4), 491-497. DOI: https://doi. org/10.15446/esrj.v24n4.92151 In order to improve the flexibility of GPS measurement, a high-precision GPS measurement method that is not restricted by the geographical location under crowd-sensing technology was proposed. The performance of the crowdsensing network was improved through a regular hexagon-based crowd-smart big data sensing network deployment mechanism. The GPS /SINS/DR fast and high-precision combined measurement methods were used to achieve high-precision measurement without geographical restrictions. It has been verified that the proposed method in this paper has much better stability in the deployment strategy of a regular hexagon than that of the square. The proposed method can achieve fast acquisition of satellite signals and high-precision positioning, and its measurement accuracy in the low-latitude city and high-latitude city is higher than the online measurement method based on Google Earth, indicating that it has significant application value. ABSTRACT High-precision GPS measurement method without geographical restrictions using crowd-sensing technology","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41439402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.63220
Han Sijie, Sang Shuxun, Zhou Peiming, Jia Jinlong, Liang Jingjing
In the Jiyang Sub-basin, Carboniferous-Permian (C-P) coal-measure source rocks have experienced complex multi-stage tectonics and therefore have a complex history of hydrocarbon generation. Because these coal measures underwent multi-stage burial and exhumation, they are characterized by various burial depths. In this study, we used the basin modeling technique to analyze the relationship between burial history and hydrocarbon generation evolution. The burial, thermal and maturity histories of C-P coals were reconstructed, including primary hydrocarbon generation, stagnation, re-initiation, and peak secondary hydrocarbon generation. The secondary hydrocarbon generation stage within this reconstruction was characterized by discontinuous generation and geographical differences in maturity due to the coupled effects of depth and a delay of hydrocarbon generation. According to the maturity history and the delay effect on secondary hydrocarbon generation, we concluded that the threshold depth of secondary hydrocarbon generation in the Jiyang Sub-basin occurred at 2,100 m during the Yanshan epoch (from 205 Ma to 65 Ma) and at 3,200 m during the Himalayan period (from 65 Ma to present). Based on depth, residual thickness, maturity, and hydrocarbon-generating intensity, five favorable areas of secondary hydrocarbon generation in the Jiyang Sub-basin were identified, including the Chexi areas, Gubei-Luojia areas, Yangxin areas, the southern slope of the Huimin depression and southwest of the Dongying depression. The maximum VRo/burial depth (%/km) occurred in the Indosinian epoch as the maximum VRo/time (%/100Ma) happened in the Himalayan period, indicating that the coupling controls of temperature and subsidence rate on maturation evolution play a significant role in the hydrocarbon generation evolution. A higher temperature and subsidence rate can both enhance the hydrocarbon generation evolution.
{"title":"Burial history and the evolution of hydrocarbon generation in Carboniferous-Permian coal measures within the Jiyang super-depression, China","authors":"Han Sijie, Sang Shuxun, Zhou Peiming, Jia Jinlong, Liang Jingjing","doi":"10.15446/ESRJ.V24N4.63220","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.63220","url":null,"abstract":"In the Jiyang Sub-basin, Carboniferous-Permian (C-P) coal-measure source rocks have experienced complex multi-stage tectonics and therefore have a complex history of hydrocarbon generation. Because these coal measures underwent multi-stage burial and exhumation, they are characterized by various burial depths. In this study, we used the basin modeling technique to analyze the relationship between burial history and hydrocarbon generation evolution. The burial, thermal and maturity histories of C-P coals were reconstructed, including primary hydrocarbon generation, stagnation, re-initiation, and peak secondary hydrocarbon generation. The secondary hydrocarbon generation stage within this reconstruction was characterized by discontinuous generation and geographical differences in maturity due to the coupled effects of depth and a delay of hydrocarbon generation. According to the maturity history and the delay effect on secondary hydrocarbon generation, we concluded that the threshold depth of secondary hydrocarbon generation in the Jiyang Sub-basin occurred at 2,100 m during the Yanshan epoch (from 205 Ma to 65 Ma) and at 3,200 m during the Himalayan period (from 65 Ma to present). Based on depth, residual thickness, maturity, and hydrocarbon-generating intensity, five favorable areas of secondary hydrocarbon generation in the Jiyang Sub-basin were identified, including the Chexi areas, Gubei-Luojia areas, Yangxin areas, the southern slope of the Huimin depression and southwest of the Dongying depression. The maximum VRo/burial depth (%/km) occurred in the Indosinian epoch as the maximum VRo/time (%/100Ma) happened in the Himalayan period, indicating that the coupling controls of temperature and subsidence rate on maturation evolution play a significant role in the hydrocarbon generation evolution. A higher temperature and subsidence rate can both enhance the hydrocarbon generation evolution.\u0000 ","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45902632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.91149
Bin Li, Qiqi Li, Mei Wenhua, Q. Zhuo, Xuesong Lu
How to cite item Li, B., Li, Q., Mei, W., Zhuo, Q., & Lu, X. (2020). Analysis of accumulation models of Middle Permian in Northwest Sichuan Basin. Earth Sciences Research Journal, 24(4), 418-427. DOI: https://doi.org/10.15446/esrj. v24n4.91149 Great progress has been made in middle Permian exploration in Northwest Sichuan in recent years, but there are still many questions in understanding the hydrocarbon accumulation conditions. Due to the abundance of source rocks and the multi-term tectonic movements in this area, the hydrocarbon accumulation model is relatively complex, which has become the main problem to be solved urgently in oil and gas exploration. Based on the different tectonic backgrounds of the middle Permian in northwest Sichuan Basin, the thrust nappe belt, the hidden front belt, and the depression belt are taken as the research units to comb and compare the geologic conditions of the middle Permian reservoir. The evaluation of source rocks and the comparison of hydrocarbon sources suggest that the middle Permian hydrocarbon mainly comes from the bottom of the lower Cambrian and middle Permian, and the foreland orogeny promoted the thermal evolution of Paleozoic source rocks in northwest Sichuan to high maturity and over maturity stage. Based on a large number of reservoir physical properties data, the middle Permian reservoir has the characteristics of low porosity and low permeability, among which the thrust nappe belt and the hidden front belt have relatively high porosity and relatively developed fractures. The thick mudstone of Longtan formation constitutes the regional caprock in the study area and the preservation condition is good as a whole. However, the thrusting faults destroyed the sealing ability of the caprock in the nappe thrust belt. Typical reservoir profiles revealed that the trap types were different in the study area. The thrust fault traps are mainly developed in the thrust nappe belt, while the fault anticline traps are developed in the hidden front belt, and the structural lithological traps are developed in the depression belt. The different structural belts in northwest Sichuan have different oil and gas accumulation models. This paper built three hydrocarbon accumulation models by the analysis of reservoir formation conditions. The comprehensive analysis supposed the hidden front belt is close to the lower Cambrian source rock, and the reservoir heterogeneity is weak, faults connected source rock is developed, so it is a favorable oil and gas accumulation area in the middle Permian. ABSTRACT Analysis of accumulation models of middle Permian in Northwest Sichuan Basin
{"title":"Analysis of accumulation models of Middle Permian in Northwest Sichuan Basin","authors":"Bin Li, Qiqi Li, Mei Wenhua, Q. Zhuo, Xuesong Lu","doi":"10.15446/ESRJ.V24N4.91149","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.91149","url":null,"abstract":"How to cite item Li, B., Li, Q., Mei, W., Zhuo, Q., & Lu, X. (2020). Analysis of accumulation models of Middle Permian in Northwest Sichuan Basin. Earth Sciences Research Journal, 24(4), 418-427. DOI: https://doi.org/10.15446/esrj. v24n4.91149 Great progress has been made in middle Permian exploration in Northwest Sichuan in recent years, but there are still many questions in understanding the hydrocarbon accumulation conditions. Due to the abundance of source rocks and the multi-term tectonic movements in this area, the hydrocarbon accumulation model is relatively complex, which has become the main problem to be solved urgently in oil and gas exploration. Based on the different tectonic backgrounds of the middle Permian in northwest Sichuan Basin, the thrust nappe belt, the hidden front belt, and the depression belt are taken as the research units to comb and compare the geologic conditions of the middle Permian reservoir. The evaluation of source rocks and the comparison of hydrocarbon sources suggest that the middle Permian hydrocarbon mainly comes from the bottom of the lower Cambrian and middle Permian, and the foreland orogeny promoted the thermal evolution of Paleozoic source rocks in northwest Sichuan to high maturity and over maturity stage. Based on a large number of reservoir physical properties data, the middle Permian reservoir has the characteristics of low porosity and low permeability, among which the thrust nappe belt and the hidden front belt have relatively high porosity and relatively developed fractures. The thick mudstone of Longtan formation constitutes the regional caprock in the study area and the preservation condition is good as a whole. However, the thrusting faults destroyed the sealing ability of the caprock in the nappe thrust belt. Typical reservoir profiles revealed that the trap types were different in the study area. The thrust fault traps are mainly developed in the thrust nappe belt, while the fault anticline traps are developed in the hidden front belt, and the structural lithological traps are developed in the depression belt. The different structural belts in northwest Sichuan have different oil and gas accumulation models. This paper built three hydrocarbon accumulation models by the analysis of reservoir formation conditions. The comprehensive analysis supposed the hidden front belt is close to the lower Cambrian source rock, and the reservoir heterogeneity is weak, faults connected source rock is developed, so it is a favorable oil and gas accumulation area in the middle Permian. ABSTRACT Analysis of accumulation models of middle Permian in Northwest Sichuan Basin","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46515651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.92069
Jian-Jun Miao, Qian-ting Lu
How to cite item Miao, J., & Lu, Q. (2020). An empirical study on the potential of land resources utilization in urban agglomeration development zones based on combination analysis. Earth Sciences Research Journal, 24(4), 439-447. DOI: https:// doi.org/10.15446/esrj.v24n4.92069 To alleviate the contradiction between human and land caused by the limitation of land resources and the irreversibility of land use in the development zone of urban agglomeration, 24 indexes were selected from four aspects: land use status, resource security, economic feasibility, and social acceptability to establish the level evaluation index system for the sustainable use of land resources in Baoding high-tech zone; also, the combination weighting method was used to determine the development level. The index weight of land resource utilization potential in the development zone was established. The subjective and objective linear combination was also established to obtain the proportion of subjective and objective. The multi-factor comprehensive evaluation model was used to evaluate the sustainable utilization degree of land in the high-tech zone. The comprehensive analysis of land-intensive use potential was made from five aspects: expansion potential, structure potential, intensity potential, management potential, and the number of years of land available; the analysis of the limiting factors and the combination of these factors of the land in the development zone was made to obtain the natural index after the renovation, and the natural quality potential of the cultivated land renovation was obtained according to the difference of the natural index before and after the renovation. The empirical results show that the high-tech zone’s land-use rationality index is relatively high during 2014-2018. During the evaluation period, the index continued to rise; the high-tech zone's resource security score was low, and there was no change during the evaluation period, which is basically at a low level. During the five years, the high-tech zone’s land-use sustainability has experienced the fluctuation process of first rising and then declining, which is in the stage of medium sustainable development. In the future, the potential for improvement is enormous. The prospect of the high-tech zone’s exploitable land structure is small, and the land structure is relatively reasonable, which is in line with the development orientation of the high-tech site. But the industrial land intensity in the zone also has a specific potential for excavation. The high-value areas of the natural quality potential of the land improvement in the high-tech site are mainly distributed in the west, northeast, and a few in the north and south. ABSTRACT An empirical study on the potential of land resources utilization in urban agglomeration development zones
{"title":"An empirical study on the potential of land resources utilization in urban agglomeration development zones based on combination analysis","authors":"Jian-Jun Miao, Qian-ting Lu","doi":"10.15446/ESRJ.V24N4.92069","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.92069","url":null,"abstract":"How to cite item Miao, J., & Lu, Q. (2020). An empirical study on the potential of land resources utilization in urban agglomeration development zones based on combination analysis. Earth Sciences Research Journal, 24(4), 439-447. DOI: https:// doi.org/10.15446/esrj.v24n4.92069 To alleviate the contradiction between human and land caused by the limitation of land resources and the irreversibility of land use in the development zone of urban agglomeration, 24 indexes were selected from four aspects: land use status, resource security, economic feasibility, and social acceptability to establish the level evaluation index system for the sustainable use of land resources in Baoding high-tech zone; also, the combination weighting method was used to determine the development level. The index weight of land resource utilization potential in the development zone was established. The subjective and objective linear combination was also established to obtain the proportion of subjective and objective. The multi-factor comprehensive evaluation model was used to evaluate the sustainable utilization degree of land in the high-tech zone. The comprehensive analysis of land-intensive use potential was made from five aspects: expansion potential, structure potential, intensity potential, management potential, and the number of years of land available; the analysis of the limiting factors and the combination of these factors of the land in the development zone was made to obtain the natural index after the renovation, and the natural quality potential of the cultivated land renovation was obtained according to the difference of the natural index before and after the renovation. The empirical results show that the high-tech zone’s land-use rationality index is relatively high during 2014-2018. During the evaluation period, the index continued to rise; the high-tech zone's resource security score was low, and there was no change during the evaluation period, which is basically at a low level. During the five years, the high-tech zone’s land-use sustainability has experienced the fluctuation process of first rising and then declining, which is in the stage of medium sustainable development. In the future, the potential for improvement is enormous. The prospect of the high-tech zone’s exploitable land structure is small, and the land structure is relatively reasonable, which is in line with the development orientation of the high-tech site. But the industrial land intensity in the zone also has a specific potential for excavation. The high-value areas of the natural quality potential of the land improvement in the high-tech site are mainly distributed in the west, northeast, and a few in the north and south. ABSTRACT An empirical study on the potential of land resources utilization in urban agglomeration development zones","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47813530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.91473
Yang Fan, L. Lifeng, Ran Qiquan, Kong Jinping, Xu Mengya, Dong Jiaxin
How to cite item Fan, Y., Lifeng, L., Qiquan, R., Jinping, K., Mengya, X., & Jiaxin, D. (2020). The characteristics of unconventional tight oil reservoir and its modification technology and productivity prediction. Earth Sciences Research Journal, 24(4), 507-512. DOI: https:// doi.org/10.15446/esrj.v24n4.91473 The zonal productivity prediction model of volume fractured horizontal wells in tight reservoirs is established in this study based on the physical model of volume fractured horizontal wells to study the near-well seepage law of volume fractured horizontal wells in unconventional tight reservoirs. The conformal transformation and iteration method are used to solve the problem. Compared with Fan Zifei's and Ning Zhengfu's method, the optimization of fractured horizontal wells' production parameters is studied. The effects of starting pressure gradient and fracture cluster number on horizontal wells' productivity with volume fracturing are analyzed. Multivariate regression analysis is used to rank the importance of influencing factors. The results show that the starting pressure gradient has the most significant impact on capacity. The application example of volume fractured horizontal wells in Lucaogou tight reservoir shows that the zonal productivity model established in this study can be used to predict the initial productivity of volume fractured horizontal wells. Thus, through theoretical analysis and numerical simulation, the productivity prediction model of horizontal wells with volume fracturing has certain guiding significance for the effective development of tight reservoirs. ABSTRACT The characteristics of unconventional tight oil reservoir and its modification technology and productivity prediction
{"title":"The characteristics of unconventional tight oil reservoir and its modification technology and productivity prediction","authors":"Yang Fan, L. Lifeng, Ran Qiquan, Kong Jinping, Xu Mengya, Dong Jiaxin","doi":"10.15446/ESRJ.V24N4.91473","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.91473","url":null,"abstract":"How to cite item Fan, Y., Lifeng, L., Qiquan, R., Jinping, K., Mengya, X., & Jiaxin, D. (2020). The characteristics of unconventional tight oil reservoir and its modification technology and productivity prediction. Earth Sciences Research Journal, 24(4), 507-512. DOI: https:// doi.org/10.15446/esrj.v24n4.91473 The zonal productivity prediction model of volume fractured horizontal wells in tight reservoirs is established in this study based on the physical model of volume fractured horizontal wells to study the near-well seepage law of volume fractured horizontal wells in unconventional tight reservoirs. The conformal transformation and iteration method are used to solve the problem. Compared with Fan Zifei's and Ning Zhengfu's method, the optimization of fractured horizontal wells' production parameters is studied. The effects of starting pressure gradient and fracture cluster number on horizontal wells' productivity with volume fracturing are analyzed. Multivariate regression analysis is used to rank the importance of influencing factors. The results show that the starting pressure gradient has the most significant impact on capacity. The application example of volume fractured horizontal wells in Lucaogou tight reservoir shows that the zonal productivity model established in this study can be used to predict the initial productivity of volume fractured horizontal wells. Thus, through theoretical analysis and numerical simulation, the productivity prediction model of horizontal wells with volume fracturing has certain guiding significance for the effective development of tight reservoirs. ABSTRACT The characteristics of unconventional tight oil reservoir and its modification technology and productivity prediction","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43824360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.79123
C. Kurtulus, İ. Sertçelik, F. Sertçelik, Hamdullah Livaoğlu, Cuneyt Saş
How to cite item Sertcelik, I., Kurtulus, C., Sertcelik, F., Livaoglu, & Sas C. (2020). Investigation of soil characterization in Hatay Province in Turkey by using Seismic Refraction, Multichannel Analysis of Surface Waves and Microtremor. Earth Sciences Research Journal, 24(4), 473-484. DOI: https://doi.org/10.15446/esrj. v24n4.79123 In this study, shallow seismic surveys, including seismic refraction, Multichannel Analysis of Surface Waves (MASW), Refraction Microtremor (ReMi), and Microtremor measurements were conducted to estimate site characterization at 26 strong-motion stations of AFAD (Disaster and Emergency Management Presidency) in the province of Hatay, situated in one of the most seismically active regions in southern Turkey. The Horizontal to vertical spectral ratio (HVSR) technique was applied, using smoothed Fourier spectra derived from a long duration series to determine dominant frequency values at different amplification levels. Shear wave velocity up to 30 m of the ground was detected with MASW analysis. In the ReMi analysis, up to 80 m was reached with a corresponding average of 650 m/s shear wave velocity. The shear wave velocities estimated by the MASW method up to 30 m were compared with those found by the ReMi method, and they were observed to be very compatible. The province of Hatay was classified according to Vs30 based NEHRP Provisions, Eurocode-8, the Turkish Building Earthquake Regulation (TBDY-2018), and Rodriguez-Marek et al. (2001). The shear-wave velocity (Vs30), Horizontal to Vertical ratio’s (H/V) peak amplitude, dominant period, and site class of each site were determined. The H/V peak amplitudes range between 1.9 and 7.6 while the predominant periods vary from 0.23 sec to 2.94sec in the study area. These results are investigated in order to explain the consistency of site classification schemes. ABSTRACT Investigation of soil characterization in Hatay Province in Turkey by using Seismic Refraction, Multichannel Analysis of Surface Waves and Microtremor
{"title":"Investigation of Soil Characterization in Hatay Province in Turkey by Using Seismic Refraction, Multichannel Analysis of Surface Waves and Microtremor","authors":"C. Kurtulus, İ. Sertçelik, F. Sertçelik, Hamdullah Livaoğlu, Cuneyt Saş","doi":"10.15446/ESRJ.V24N4.79123","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.79123","url":null,"abstract":"How to cite item Sertcelik, I., Kurtulus, C., Sertcelik, F., Livaoglu, & Sas C. (2020). Investigation of soil characterization in Hatay Province in Turkey by using Seismic Refraction, Multichannel Analysis of Surface Waves and Microtremor. Earth Sciences Research Journal, 24(4), 473-484. DOI: https://doi.org/10.15446/esrj. v24n4.79123 In this study, shallow seismic surveys, including seismic refraction, Multichannel Analysis of Surface Waves (MASW), Refraction Microtremor (ReMi), and Microtremor measurements were conducted to estimate site characterization at 26 strong-motion stations of AFAD (Disaster and Emergency Management Presidency) in the province of Hatay, situated in one of the most seismically active regions in southern Turkey. The Horizontal to vertical spectral ratio (HVSR) technique was applied, using smoothed Fourier spectra derived from a long duration series to determine dominant frequency values at different amplification levels. Shear wave velocity up to 30 m of the ground was detected with MASW analysis. In the ReMi analysis, up to 80 m was reached with a corresponding average of 650 m/s shear wave velocity. The shear wave velocities estimated by the MASW method up to 30 m were compared with those found by the ReMi method, and they were observed to be very compatible. The province of Hatay was classified according to Vs30 based NEHRP Provisions, Eurocode-8, the Turkish Building Earthquake Regulation (TBDY-2018), and Rodriguez-Marek et al. (2001). The shear-wave velocity (Vs30), Horizontal to Vertical ratio’s (H/V) peak amplitude, dominant period, and site class of each site were determined. The H/V peak amplitudes range between 1.9 and 7.6 while the predominant periods vary from 0.23 sec to 2.94sec in the study area. These results are investigated in order to explain the consistency of site classification schemes. ABSTRACT Investigation of soil characterization in Hatay Province in Turkey by using Seismic Refraction, Multichannel Analysis of Surface Waves and Microtremor","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45476422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.91114
Chaoyong Hou, H. Cai, S. Pei
How to cite item Hou, C., Cai, H., & Pei, S. (2020). The SHRIMP U-Pb isotope dating of Mesozoic volcanic from Zhangwu-Heishan Area, West Liaoning Province, China. Earth Sciences Research Journal, 24(4), 409-417. DOI: https://doi. org/10.15446/esrj.v24n4.91114 The Zhangwu-Heishan area is located in the east of the Fuxin-Yixian basin. Besides the Quaternary soil, the study area is mostly covered with volcanic rock. The horizon and age of volcanic rock play an essential role in understanding fossil beds, structures, and sedimentary evolution of West Liaoning Province and coal seeking. During this work, 11 volcanic rock samples were measured by SHRIMP U-Pb isotope analysis. Based on the reported data on the age of the Mesozoic volcanic rock in West Liaoning Province, in combination with new measurement data, Cretaceous volcanic activities in West Liaoning Province can be divided into five stages, namely 132±1 Ma, 126±1 Ma, 122±2 Ma, 115±2 Ma, and 100±5 Ma. Based on statistical results, this paper concluded that the thinning time of the crust in Northeast China is from 132±1 Ma to 115±2 Ma. ABSTRACT The SHRIMP U-Pb isotope dating of Mesozoic volcanic from Zhangwu-Heishan Area, West Liaoning Province, China
如何引用项目侯昌，蔡辉，裴胜(2020)。辽西张武-黑山地区中生代火山岩SHRIMP U-Pb同位素定年地球科学研究，24(4)，409-417。DOI: https://doi。张武—黑山地区位于阜新—黟县盆地东部。研究区除第四纪土壤外，多为火山岩覆盖。火山岩的层位和年龄对认识辽西地区的化石层、构造、沉积演化和找煤具有重要意义。在此工作中，对11个火山岩样品进行了SHRIMP U-Pb同位素分析。根据已有的辽西中生代火山岩年龄资料，结合新的测量资料，将辽西白垩系火山活动划分为132±1 Ma、126±1 Ma、122±2 Ma、115±2 Ma和100±5 Ma 5个阶段。根据统计结果，认为东北地区地壳变薄时间为132±1 Ma ~ 115±2 Ma。辽西张武-黑山地区中生代火山岩SHRIMP U-Pb同位素定年研究
{"title":"The SHRIMP U-Pb isotope dating of Mesozoic volcanic from Zhangwu-Heishan Area, West Liaoning Province, China","authors":"Chaoyong Hou, H. Cai, S. Pei","doi":"10.15446/ESRJ.V24N4.91114","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.91114","url":null,"abstract":"How to cite item Hou, C., Cai, H., & Pei, S. (2020). The SHRIMP U-Pb isotope dating of Mesozoic volcanic from Zhangwu-Heishan Area, West Liaoning Province, China. Earth Sciences Research Journal, 24(4), 409-417. DOI: https://doi. org/10.15446/esrj.v24n4.91114 The Zhangwu-Heishan area is located in the east of the Fuxin-Yixian basin. Besides the Quaternary soil, the study area is mostly covered with volcanic rock. The horizon and age of volcanic rock play an essential role in understanding fossil beds, structures, and sedimentary evolution of West Liaoning Province and coal seeking. During this work, 11 volcanic rock samples were measured by SHRIMP U-Pb isotope analysis. Based on the reported data on the age of the Mesozoic volcanic rock in West Liaoning Province, in combination with new measurement data, Cretaceous volcanic activities in West Liaoning Province can be divided into five stages, namely 132±1 Ma, 126±1 Ma, 122±2 Ma, 115±2 Ma, and 100±5 Ma. Based on statistical results, this paper concluded that the thinning time of the crust in Northeast China is from 132±1 Ma to 115±2 Ma. ABSTRACT The SHRIMP U-Pb isotope dating of Mesozoic volcanic from Zhangwu-Heishan Area, West Liaoning Province, China","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48560677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.82831
C. Candeiro, S. Brusatte, Glayce Kelly de Queiroz Souza, Adelino A. Carvalho, D. Maia, T. Dias, L. Vidal, Musa Maria Nogueira Gomes, Lucas Marques Barros
The southern Goiás state region of Central Brazil has an extensive and informative record of fossil biota. Particularly over the last five years, there has been a great increase in fossil finds, which has enabled a greater understanding of this region's fauna and flora during the Late Cretaceous. In this article, we provide an updated synthesis of the biota from the Cretaceous of the southern Goiás state, the record of plants, gastropods, turtles, crocodilians, titanosaurs, and theropod dinosaurs.
{"title":"Late Cretaceous Bauru Group biota from Southern Goiás state, Brazil: history and fossil content","authors":"C. Candeiro, S. Brusatte, Glayce Kelly de Queiroz Souza, Adelino A. Carvalho, D. Maia, T. Dias, L. Vidal, Musa Maria Nogueira Gomes, Lucas Marques Barros","doi":"10.15446/ESRJ.V24N4.82831","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.82831","url":null,"abstract":"The southern Goiás state region of Central Brazil has an extensive and informative record of fossil biota. Particularly over the last five years, there has been a great increase in fossil finds, which has enabled a greater understanding of this region's fauna and flora during the Late Cretaceous. In this article, we provide an updated synthesis of the biota from the Cretaceous of the southern Goiás state, the record of plants, gastropods, turtles, crocodilians, titanosaurs, and theropod dinosaurs.","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45787622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-26DOI: 10.15446/ESRJ.V24N4.92387
Yanyan Huang
Aiming at the destruction of the ecological environment of the comprehensive geological structure, the traditional restoration countermeasures have the problems of high input cost and low economic benefits. For this reason, the ecological environment destruction process and restoration countermeasures of the comprehensive geological structure were proposed. The common geological structure characteristics and the impact of activities on the ecological environment in the mining area were analyzed. Based on the analysis results, an evaluation system for the degree of damage to the ecological environment by mining activities was constructed. According to the expert scoring method, a rating standard was developed to measure the degree of damage to the ecological environment. Depending on the degree of damage, appropriate recovery measures were formulated. The experimental results show that compared with the traditional restoration countermeasures, considering the destruction of the ecological environment during the mining process of comprehensive geological structures, the proposed restoration countermeasures have the advantages of low cost and high economic benefits.
{"title":"Destruction process and restoration countermeasures of the ecological environment of a comprehensive geological structure","authors":"Yanyan Huang","doi":"10.15446/ESRJ.V24N4.92387","DOIUrl":"https://doi.org/10.15446/ESRJ.V24N4.92387","url":null,"abstract":"Aiming at the destruction of the ecological environment of the comprehensive geological structure, the traditional restoration countermeasures have the problems of high input cost and low economic benefits. For this reason, the ecological environment destruction process and restoration countermeasures of the comprehensive geological structure were proposed. The common geological structure characteristics and the impact of activities on the ecological environment in the mining area were analyzed. Based on the analysis results, an evaluation system for the degree of damage to the ecological environment by mining activities was constructed. According to the expert scoring method, a rating standard was developed to measure the degree of damage to the ecological environment. Depending on the degree of damage, appropriate recovery measures were formulated. The experimental results show that compared with the traditional restoration countermeasures, considering the destruction of the ecological environment during the mining process of comprehensive geological structures, the proposed restoration countermeasures have the advantages of low cost and high economic benefits.","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43609879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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