小直径水力压裂原位应力测量系统的研究与应用

IF 1.8 4区 地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY Geoscientific Instrumentation Methods and Data Systems Pub Date : 2024-04-30 DOI:10.5194/gi-13-107-2024
Yimin Liu, Mian Zhang, Yixuan Li, Huan Chen
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引用次数: 0

摘要

摘要观测和估计深部地壳的应力状态是原位应力测量工作中的一项重要挑战。水力压裂法是一种重要的基于井眼的绝对原位应力测量技术。本文介绍的小直径水力压裂原位应力测量系统主要由井下测量部件(串联小直径封隔器和双回路连接安装杆)和地面控制部件(液压流体控制系统、数据采集系统和流量可控的高压油泵)组成。它可以对小尺寸钻孔进行原位应力系列测量,最大测量范围为 30-45 兆帕。随后的原位应力数据计算采用统一设计方法,讨论各种外部因素对岩石压裂值的影响。小直径水力压裂原位应力测量系统具有结构简单轻便、测试时间短、成功率高、对岩石完整性和加压设备要求低等优点。它已形成小直径原位应力测量设备系列,并创新性地推广到煤矿和金属矿区井下巷道安全评估领域。对准确测定深部开拓区的原位应力状态具有重要的实用价值和经济意义。
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Research and application of small-diameter hydraulic fracturing in situ stress measurement system
Abstract. Observation and estimation of the stress state in the deep crust is a crucial challenge in in situ stress measurement work. The hydraulic fracturing method is an important borehole-based technique for absolute in situ stress measurement. The small-diameter hydraulic fracturing in situ stress measurement system described in this article consists mainly of underground measurement components (serial small-diameter packers and dual-circuit connecting installation rods) and surface control components (hydraulic fluid control system, data acquisition system, and high-pressure oil pump with controllable flow). It enables series measurement of small-sized boreholes for in situ stress and provides a maximum measurement range of 30–45 MPa. The subsequent calculation of in situ stress data adopts a uniform design method to discuss the influence of various external factors on rock fracturing values. The small-diameter hydraulic fracturing in situ stress measurement system has the advantages of simple and lightweight structure, short testing time, high success rate, and low requirements for rock integrity and pressurization equipment. It has formed a series of small-diameter in situ stress measurement equipment which has been innovatively promoted to the field of underground tunnel safety assessment in coal mines and metal mining areas. It has an important practical value and economic significance in accurately determining the in situ stress state of deep development areas.
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来源期刊
Geoscientific Instrumentation Methods and Data Systems
Geoscientific Instrumentation Methods and Data Systems GEOSCIENCES, MULTIDISCIPLINARYMETEOROLOGY-METEOROLOGY & ATMOSPHERIC SCIENCES
CiteScore
3.70
自引率
0.00%
发文量
23
审稿时长
37 weeks
期刊介绍: Geoscientific Instrumentation, Methods and Data Systems (GI) is an open-access interdisciplinary electronic journal for swift publication of original articles and short communications in the area of geoscientific instruments. It covers three main areas: (i) atmospheric and geospace sciences, (ii) earth science, and (iii) ocean science. A unique feature of the journal is the emphasis on synergy between science and technology that facilitates advances in GI. These advances include but are not limited to the following: concepts, design, and description of instrumentation and data systems; retrieval techniques of scientific products from measurements; calibration and data quality assessment; uncertainty in measurements; newly developed and planned research platforms and community instrumentation capabilities; major national and international field campaigns and observational research programs; new observational strategies to address societal needs in areas such as monitoring climate change and preventing natural disasters; networking of instruments for enhancing high temporal and spatial resolution of observations. GI has an innovative two-stage publication process involving the scientific discussion forum Geoscientific Instrumentation, Methods and Data Systems Discussions (GID), which has been designed to do the following: foster scientific discussion; maximize the effectiveness and transparency of scientific quality assurance; enable rapid publication; make scientific publications freely accessible.
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