[1]刘金华.腰英台地区低压储层漏失分析及对策[J].复杂油气藏,2022,15(04):107-112.[doi:10.16181/j.cnki.fzyqc.2022.04.020]
 LIU Jinhua.Analysis and countermeasures of low pressure reservoir leakagein Yaoyingtai area[J].Complex Hydrocarbon Reservoirs,2022,15(04):107-112.[doi:10.16181/j.cnki.fzyqc.2022.04.020]
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腰英台地区低压储层漏失分析及对策()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
15卷
期数:
2022年04期
页码:
107-112
栏目:
油气开发
出版日期:
2023-02-01

文章信息/Info

Title:
Analysis and countermeasures of low pressure reservoir leakagein Yaoyingtai area
作者:
刘金华
1.页岩油气富集机理与有效开发国家重点实验室,北京 102206;2.中石化石油工程技术研究院有限公司,北京 102206
Author(s):
LIU Jinhua
1.State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,Beijing 102206,China;2.Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing 102206,China
关键词:
低压储层防漏堵漏腰英台地区
Keywords:
low pressure formation lost prevention and pluggingYaoyingtai area
分类号:
TE254
DOI:
10.16181/j.cnki.fzyqc.2022.04.020
文献标志码:
A
摘要:
腰英台储层营城组发育0.1~2 mm的裂缝。经过多年的开发,地层压力低至0.63~0.91 g/cm3,钻进过程中漏失严重,为压差性漏失和裂缝扩展性漏失两类。通过优选颗粒和变形填充材料,参考理想充填理论,开发了随钻防漏材料SMFL,其对钻井液流变性影响小,可有效封堵0.2 mm裂缝,承压能力大于20 MPa,形成的封堵层酸溶率达77.23%~79.21%,通过随钻防漏解决压差性漏失问题。参考SAN-2工程分布规律,确定了封堵1 mm、2 mm裂缝的高效桥接堵漏配方,其承压能力大于25 MPa,形成的封堵层酸溶率达79.39%~79.58%,通过停钻专堵解决裂缝扩展性漏失问题。随钻处理剂和高效桥接堵漏配方在YP16井和YP17井等进行了应用,成功封堵住营城组低压漏失层,堵漏时间大幅缩短,保证了钻井施工的顺利进行。
Abstract:
There are 0.1 to 2 mm cracks in Yingcheng Formation of the target stratum in Yaoyingtai area. After years of development, the formation pressure is as low as 0.63 to 0.91g/cm3, and the lost is serious in drilling. The types of lost are differential pressure lost and fracture expansion lost. Through the optimization of raw materials, and the use of ideal filling theory, a plugging agent while drilling SMFL has been developed, which has little influence on the rheological properties of drilling fluid, can effectively block 0.2 mm fractures, the pressure bearing capacity is greater than 20 MPa, and the acid solubility of the formed plugging layer is 77.23% to 79.21%. Through the leak proof while drilling and plugging technology, the problem of differential pressure leakage can be solved. According to the distribution law of SAN-2 project,the high-efficiency bridging plugging formula for sealing 1 mm and 2 mm fractures has been determined. The pressure bearing capacity of the formula is greater than 25 MPa, and the acid solubility of the plugging layer is 79.39% to 79.58%. The problem of fracture expanding leakage can be solved by stopping drilling bridging plugging technology. The while drilling agent and high-efficiency bridging plugging formula have been widely used in YP 16 well and YP 17 well. The low-pressure leakage layer of Yingcheng Formation has been successfully sealed to ensure the smooth drilling construction.

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备注/Memo

备注/Memo:
收稿日期:2022-09-25;改回日期:2022-11-30。
作者简介:刘金华(1976—),高级工程师,现从事防漏堵漏研究及现场技术服务工作。E-mail:liujinhua.sripe@sinopec.com。
更新日期/Last Update: 2022-12-25