第38卷第3期 2016年5月
石
油
采工钻
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2016)03029606
DOI:10.13639/j.odpt.2016.03.004
顺北含辉绿岩超深井井身结构优化设计
刘彪潘丽娟易浩李双贵
中国石化西北油国分公司石油工程技术研究院
Vol. 38 No. 3
May2016
引用格式：刘彪，潘丽娟，易浩，李双资.顺北含辉绿岩超深并井身结构优化设计[J】，石油钻采工艺，2016,383)：296-301.
摘要：顺北井区采用六级井身结构开发，存在大尺寸井眼长、管层次多以及火成漏失，导致钻井效率低、垂需优化井身结构。采用Drillworks软件模拟了地层三压力剖面，成像测并与电镜扫猫认识了火成岩裂缝分市，通过岩石矿物成分与理化性能分析了深部泥券期辑机理，通过对比非标套管与钻杆的强度与尺寸分析了管往匹配性。结果表明全并存在4个不同压力系统，火成岩裂缝纵向分布缝宽0.5~2mm、微裂缝蜂宽2~3μm，易辑况岩伊蒙混层达70%，蒸馅水作用下线性断账率40%~45%，得到了3个必对点与1个风险点；通过配套卸铵基聚磺钻并液体系与弱失补较措施，保障了长操眼并壁稳定；优远了0139.7 mm非标套管，完钻并眼尺寸由114.3mm扩大至120.65mm满足使用非标88.9mm钻杆，将并身结构优化为四级。新结构满足高效钻井需求，缩短钻井周期达125d。
关键词：超深井；火成岩；长裸眼；井身结构；套管优选；承压堵漏技术
中图分类号：TE21
文献标识码：A
Casing program optimization of ultra-deep well with diabase reservoir in Shunbei block
LIU Biao, PAN Lijuan, YI Hao, LI Shuanggui
Research Iustitarte of Petroleum Erngineering, Norrhwesr Oilfield Company, SINOPEC, Urumgi, Xinjiang 830011, China
Citation: LIU Biao, PAN Lijuan, YI Hao, LI Shuanggui. Casing program optimization of ultra-deep well with diabase reservoir in Shunbei block [J] . Oil Drilling & Production Technology, 2016, 38(3): 296-301.
Abstract: The six-section casing program is adopted in the Shunbei block, but it is disadvantageous with long large-size borehole, excessive casing sections and mud loss in igneous rocks, which lead to low-efficient drilling. Therefore, it is necessary to optimize the casing program. In this paper, three reservoir pressures were simulated by using the Drillworks Software. The distribution of fractures o seaa aeo (adoaso oaaa eas) ero e sn aa sao sne deep shale were investigated on the basis of its mineral composition and physical and chemical properties. The matching between non-standard casings and drilling pipes was analyzed in terms of their strength and size. It is shown that there are four pressure systems in hole. The fractures distributed vertically in igneous rocks are 0.5-2 mm wide and the microfractures are 2~3 μm wide. The illite/smectite formation accounts for 70% of caving mudstones and its linear expansion ratio in distilled water is 40%~45%. Three plugging points and one risk point were defined. The long open-hole section was stabilized by taking mud loss remedial measures with potassium ammonium polysufide drilling fluid system. The O139.7 mm non-standard casing was selected and the completion hole diameter was enlarged to 120.65 mm from 114.3 mm, so that the O88.9 mm non-standard drilling pipe could be used and the casing program was optimized into four-section mode. By virtue of the new casing program, the drlling was performed efficiently, with the drlling cycle shortened by 125 d.
Key words: ultra-deep well; igneous rock; long open-hole; casing program; casing selection; mud loss control under pressure
基金项目：国家科技重大专项“大型油气田及煤层气开发"之课题“碳酸益岩整测型油藏钻并技术究善与推广"（端号：2011ZX05049-
02-02)。
第一作者：刘总（1983-),2010年半业于长江大学油气井工程专业，主要从事钻井工艺优化与设计工作。通地让：(830011)新续岛鲁术
齐市新市区长券南路466号西北油分公司工程技术研究院B509实。电语；0991-3161141。E-mail;lieren2222@126.com
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