基于纵波三维层析成像技术的压裂检测方法

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英文篇名：Coalbed fracture detection based on compressional wave three-dimensional tomographic imaging technique 作者：王文文 ; 孟尚志 ; 钱玉萍 英文作者：WANG Wenwen;MENG Shangzhi;QIAN Yuping;Oilfield Technology Department China Oilfield Services Limited;China United Coalbed Methane Co., Ltd.; 关键词：三维层析成像 ; 煤层气 ; 压裂检测 ; 声波测井 英文关键词：Three-dimensional tomographic imaging processing;;Coalbed methane;;Fracture detection;;Acoustic logging 中文刊名：应用声学 英文刊名：Journal of Applied Acoustics 机构：中海油田服务股份有限公司油田技术事业部;中联煤层气有限责任公司; 出版日期：2019-03-12 15:30 出版单位：应用声学 年：2019 期：02 基金：中国海油石油集团公司“煤层气/页岩气/致密砂岩气三气共采先导性试验研究”资助项目 语种：中文; 页：33-39 页数：7 CN：11-2121/O4 ISSN：1000-310X 分类号：TE377

摘要

国内煤层气勘探由于煤层埋深浅,煤储层致密、压力低,均需压裂增产作业。而压裂效果与煤层气单井增产效果密切相关,因而研究煤层压裂效果,建立评价指标,指导压裂设计至关重要。三维声波测井资料能够获取井周轴向、径向以及环向速度变化信息,在压裂前后,利用三维层析成像处理技术,可以评价煤层气井压裂效果。将该技术与传统声波技术和微地震监测结果相结合,能够直观判断煤层气储层压裂改造前后在纵横向及环向的变化情况。
        Domestic coalbed methane exploration always needs fracturing operations to increase production due to its shallow buried depth, tightness and low pressure. Fracturing effect is closely related to the effect of single well increasing production, so it is extremely important to research the fracturing effect, set up evaluation index and guide design of fracturing. Three-dimensional acoustic logging data is able to obtain radial and axial velocity variation information in well, and evaluate fracturing effect in coalbed methane well by using threedimensional tomographic imaging processing technology before and after fracturing. Combining this technology with traditional acoustic wave technology and microseismic monitoring results, it is possible to visually judge the changes in the longitudinal, lateral and circumferential directions before and after the coalbed methane reservoir fracturing.

引文

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