提高煤层气水平井固井质量技术措施  

Technical Measures of Cementing Quality Improvement for CBM Horizontal Wells

作　　者：杨亿 刘蒙蒙 YANG Yi;LIU Mengmeng(NO.156 Exploration Team,Xinjiang Bureau of Coalfield Geology,Xinjiang 830009)

机构地区：[1]新疆煤田地质局一五六煤田地质勘探队,新疆830009

出　　处：《中国煤层气》2021年第3期3-5,共3页China Coalbed Methane

基　　金：“十三五”国家科技重大专项项目“新疆准噶尔、三塘湖盆地中低煤阶煤层气资源与开发技术”(2016ZX05043);自治区重点研发项目“新疆准噶尔盆地南缘煤层气资源评价与勘查开发关键技术”(201B03019)。

摘　　要：乌鲁木齐矿区大倾角中低煤阶煤层气井普遍采用套管固井射孔完井方式。本文在分析影响大斜度井、L型井固井质量的因素的基础上,主要从调整钻井液性能、提高套管居中度、优化隔离液与冲洗液、水泥浆体系配方优选等四个方面采取措施,来提高水平井固井质量。The method of casing cementing and perforated completion is commonly adopted in CBM wells with medium-low coal rank and large dip strata in Urumqi Mining Area.The paper analyzes the factors that affects the cementing quality of highly deviated wells and L-type wells,and proposes measures to improve the cementing quality for horizontal wells from four aspects,including adjusting the property of drilling fluid,improving the centering degree of casings,optimizing the spacer fluid and flushing fluid and optimizing the formulation of cement slurry system.

关 键 词：乌鲁木齐矿区 煤层气 套管固井 水平井固井质量 

分 类 号：TE256[石油与天然气工程—油气井工程]