{"title":"Geological monitoring for drilling a transport section well bore using inverse values of ROP","authors":"I. Mostovich","doi":"10.3997/2214-4609.202131016","DOIUrl":null,"url":null,"abstract":"Summary At the stage of geological monitoring for drilling the transport section of the well, the geosteering specialist uses LWD and Mudlogging data. Geophysical methods of gamma-ray, neutron gamma-ray, and laterolog are used for stratigraphic identification of the target formation. If the task is to stop the drilling of the transport section at a depth of half а meter from the top of the formation, then an at-bit sensor gamma-ray is required. However, this tool has a high cost and is not always used in the bottomhole assembly. So, if a constant drilling regime is observed and the angle of the bit meeting with the rock stratification plane is minimal, it is legitimate to use the value-inverted ROP (ROPIV) curve from the Mudlogging station to identify the stratigraphic reference point of the target carbonate formation.","PeriodicalId":135592,"journal":{"name":"EAGE GeoTech 2021 First EAGE Workshop on Directional Drilling and Geosteering","volume":"97 3 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"EAGE GeoTech 2021 First EAGE Workshop on Directional Drilling and Geosteering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3997/2214-4609.202131016","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Summary At the stage of geological monitoring for drilling the transport section of the well, the geosteering specialist uses LWD and Mudlogging data. Geophysical methods of gamma-ray, neutron gamma-ray, and laterolog are used for stratigraphic identification of the target formation. If the task is to stop the drilling of the transport section at a depth of half а meter from the top of the formation, then an at-bit sensor gamma-ray is required. However, this tool has a high cost and is not always used in the bottomhole assembly. So, if a constant drilling regime is observed and the angle of the bit meeting with the rock stratification plane is minimal, it is legitimate to use the value-inverted ROP (ROPIV) curve from the Mudlogging station to identify the stratigraphic reference point of the target carbonate formation.
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