沁水盆地南部煤层气水平井工艺技术优化

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英文篇名：CBM Horizontal Well Technology Optimization in South Qinshui Basin 作者：张光波 ; 刘春春 ; 贾慧敏 ; 樊彬 ; 刘斌 ; 李雪琴 英文作者：ZHANG Guangbo;LIU Chunchun;JIA Huimin;FAN Bin;LIU Bin;LI Xueqin;Shanxi CBM Exploration and Development Branch,PetroChina Huabei Oilfield Company;Coalbed Methane Division,PetroChina Huabei Oilfield Company; 关键词：沁水盆地 ; 煤层气 ; L型筛管水平井 ; L型套管压裂水平井 英文关键词：Qinshui Basin;;CBM;;L-type screen horizontal well;;L-type casing fractured horizontal well 中文刊名：ZGMC 英文刊名：China Coalbed Methane 机构：中石油华北油田山西煤层气勘探开发分公司;中石油华北油田煤层气事业部; 出版日期：2019-06-15 出版单位：中国煤层气 年：2019 期：v.16 基金：国家科技重大专项“沁水盆地高煤阶煤层气高效开发示范工程”(2017ZX05064);; 中国石油天然气股份有限公司重大科技专项“煤层气勘探开发关键技术研究与应用”(2017E-1405) 语种：中文; 页：ZGMC201903005 页数：4 CN：03 ISSN：11-5011/TD 分类号：23-26

摘要

沁水盆地南部高阶煤煤储层为特低渗储层,具有低压、低渗、低孔、非均质性强的特点,水平井开发技术是提高煤层气采气速度及效益开发的有效途径。通过以樊庄-郑庄区块历年来投产的各类水平井为研究对象,展开了适应性分析及开发效果评价。研究结果标明:对于高阶煤煤层气开发而言,裸眼多分支水平井、U型水平井由于投资高、产能到位率低、后期治理难度大已被淘汰,L型筛管水平井在高渗区适合规模开发,L型套管压裂水平井能够有效解决低渗区储量动用难和构造煤发育区直井造缝难的问题。
        The high rank coal reservoirs in South Qinshui Basin are extremely low permeability reservoirs, which are characterized by low pressure, low permeability, low porosity and strong heterogeneity. Horizontal well development technology is an effective way to improve the gas production rate and the benefit development of CBM. By taking the various horizontal wells that have been put into operation in Fanzhuang-Zhengzhuang block over the years as the studied target, the adaptability analysis and development effect evaluation are carried out. Research results indicate that for the CBM development of high-rank coal, the open-hole multi-lateral horizontal wells and U-type horizontal wells have been obsoleted due to the high investment, low productivity and difficulty in later treatment. The L-type screen horizontal wells are suitable for large-scale development in high permeability areas. The L-type casing fracturing horizontal wells can effectively solve the difficulties of reserve production in low permeability areas and vertical wells fracturing in structural coal development areas.

引文

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