膨胀型油基防漏堵漏钻井液体系

刘伟; 柳娜; 张小平

doi:10.3969/j.issn.1001-5620.2016.01.003

膨胀型油基防漏堵漏钻井液体系

doi: 10.3969/j.issn.1001-5620.2016.01.003

刘伟^1,2,
柳娜^1,3,
张小平^1,2

1.
低渗透油气田勘探开发国家工程实验室, 西安 710018
2. 中国石油川庆钻探工程有限公司钻采工程技术研究院, 西安 710018
3. 中国石油长庆油田分公司勘探开发研究院, 西安 710018

基金项目: 川庆钻探工程有限公司科技项目"油基钻井液膨胀型封堵剂研发与应用"(CQ2014B-6-1-3)的部分研究内容

详细信息

作者简介:
刘伟,工程师,硕士,1979年生,主要从事钻完井液研究工作。电话(029)86594935;E-mail:gcy_liuw@cnpc.com.cn。

中图分类号: TE282
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出版历程
- 收稿日期: 2015-10-09
- 刊出日期: 2016-01-30

Control and Prevent Oil Base Mud Loss with Expandable Plugging Agents

LIU Wei^1,2,
LIU Na^1,3,
ZHANG Xiaoping^1,2

1.
National Key Laboratory of Low Permeability Oil Field Exploration and Development, Research Institute of Drilling and Production Technology, CNPC Chuanqing Drilling Engineering Company Ltd., Xi'an Shaanxi 710018, China
2. Research Institute of Drilling and Production Technology, CNPC Chuanqing Drilling Engineering Company Ltd., Xi'an Shaanxi 710018, China
3. Research Institute of Petroleum Exploration, CNPC Changqing Oilfield Company, Xi'an Shaanxi 710018, China

摘要

摘要: 针对油基防漏堵漏钻井液技术难题,研究出一种具有三维网络交联结构或者微孔结构的膨胀型堵漏剂,其可选择性地吸收油水混合体系中的油,具有温度敏感延时膨胀特性,并具有一定的抗压以及成膜能力,在90℃的1 h吸油率大于120%,体积膨胀率大于40%。同时优选出了可使体系热滚后破乳电压升高的乳化剂G326,可使体系高温高压滤失量降低至4 mL以下的降滤失剂G328,优选出G327和G338封堵剂以及颗粒较粗的GFD-M和GFD-C,构建了膨胀型油基防漏堵漏体系,分别形成了堵漏和防漏钻井液配方。其中堵漏配方1~5 mm缝板实验承压可达7.0 MPa,防渗漏配方API砂床侵入深度降低率大于95%。该体系在四川页岩气水平井现场应用结果显示:堵漏配方现场堵漏作业一次成功率大于60%,防漏配方在试验井段2.10~2.45 g/cm³高密度条件下,油基钻井液总渗漏量控制在10 m3以内,封堵防漏效果良好。
- 膨胀型堵漏剂 /
- 油基钻井液防漏堵漏体系 /
- 封堵性能 /
- 页岩气水平井
Abstract: An oil base mud loss prevention fluid (LCM mud) was formulated through optimization of additives and expandable plugging agents. Compatibility, plugging capacity and pressure containment of the LCM mud were evaluated through laboratory experiments. The LCM mud showed good rheology and high electrical stability in laboratory experiments. In experiments with the LCM mud on 1-5 mm simulated fractures, the pressure containment of the LCM mud was 7.0 MPa. Depths of invasion of the LCM mud into API sand beds were reduced by 95% or higher. In a horizontal shale gas well operation, more than 60% of the mud losses were controlled at the first try. Volumes of high density (2.10-2.45 g/cm³) oil base mud lost were controlled within 10 m3, demonstrating that this LCM mud satisfied the needs for mud loss control in field operations.
- Expandable lost circulation material /
- LCM mud for loss control and prevention of oil base drilling fluid /
- Plugging performance /
- Horizontal shale gas well

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