一种抗高温凝胶封堵剂

周新宇; 刘敬平; 吕开河; 孙金声; 张文超; 滕宇翔

doi:10.12358/j.issn.1001-5620.2022.03.005

一种抗高温凝胶封堵剂

doi: 10.12358/j.issn.1001-5620.2022.03.005

周新宇^1,,
刘敬平¹,
吕开河¹,
孙金声^{1, 2, ,},
张文超¹,
滕宇翔¹

1.
中国石油大学(华东)石油工程学院, 山东青岛 266580
2.
中国石油集团工程技术研究院有限公司, 北京102206

基金项目: 国家自然科学基金“页岩气裂缝性地层剪切滑移坍塌机理与水基钻井液稳定方法”（52074330）；国家自然科学基金“富伊利石页岩气地层水化失稳机理及化学物理耦合控制方法研究”（51904328）；山东省重点研发计划“绿色高效井筒工作液关键材料研发及产业化”（2020ZLYS07）

详细信息

作者简介:
周新宇，在读硕士研究生，现在主要从事钻井液技术研究工作。电话 15621462368；E-mail：z19020074@s.upc.edu.cn

通讯作者:
孙金声，E-mail：sunjsdri@cnpc.com.cn

中图分类号: TE254.4
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- 被引次数: 0
出版历程
- 收稿日期: 2021-12-23
- 修回日期: 2022-01-28
- 网络出版日期: 2022-08-10
- 刊出日期: 2022-05-30

A High Temperature Gel Plugging Agent

1.
School of Petroleum Engineering, China University of Petroleum(East China), Qingdao, Shandong 266580
2.
CNPC Engineering Technology R & D Company Limited, Beijing 102206

摘要

摘要: 凝胶类封堵剂具有自适应强的特点，但钻井液用凝胶封堵剂普遍存在抗温性较差的问题。以聚乙烯醇（PVA）、丙烯酸（AA）、丙烯酰胺（AM）为反应单体，N，N-二甲基双丙烯酰胺（MBA）为交联剂，过硫酸铵为引发剂制备了一种新型凝胶封堵剂（PPAA），该封堵剂抗温可达180 ℃。PPAA膨胀倍数低，对钻井液流变性影响小，能降低钻井液滤失量。180 ℃老化后，含2%PPAA的钻井液对80～100目砂床的侵入深度为2.6 cm，较常规封堵剂封堵率提高60.6%，在6%NaCl条件下封堵率提高48.6%，且高温高压砂盘滤失量降低69.7%。
- 凝胶 /
- 封堵剂 /
- 抗高温 /
- 水基钻井液
Abstract: Gel plugging agents have the characteristics of strong self-adaptation, their use in drilling fluids, on the other hand, has the shortage of poor thermal stability. To overcome this shortage, a new gel plugging agent, PPAA, was developed with poly vinyl alcohol (PVA), acrylic acid (AA) and acrylamide (AM) as the reaction monomers, N, N-dimethyl bisacrylamide (MBA) as the crosslinking agent and ammonium persulphate as the initiator. PPAA functions normally at temperatures as high as 180 ℃. PPAA has low expansion factor, minor effect on the rheology of mud, and is able to control the filtration rate of the mud. A drilling fluid containing 2% PPAA, after aging at 180 ℃, can invade into a 80 – 100 mesh sand-bed by 2.6 cm, and the plugging efficiency of the mud is 60.6% higher than that of a mud treated with conventional plugging agents. Compared with conventional plugging agents, 6% NaCl solution treated with PPAA has efficiency of plugging increased by 48.6%, and the HTHP filter loss through sand plate reduced by 69.7%.
- Gel /
- Plugging agent /
- High temperature resistant /
- Water based drilling fluid

HTML全文

图 1 PPAA的FTIR图

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图 2 PPAA的热重分析图

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图 3 浸泡时间对PPAA凝胶质量的影响

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图 4 不同温度下PPAA膨胀倍数

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图 5 PPAA的应力-应变曲线

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图 6 钻井液泥饼的SEM图像

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图 7 封堵剂PPAA对钻井液流变性能的影响

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图 8 封堵剂PPAA对钻井液滤失性能的影响

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图 9 不同温度下PPAA浓度对60～　80目砂床侵入深度的影响

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图 10 不同温度下PPAA浓度对80～　　100目砂床侵入深度的影响

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图 11 NaCl浓度对PPAA和SRNJ-D3砂床（80～100目）侵入深度的影响

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图 12 老化时间对PPAA和SRNJ-D3砂床（80～100目）侵入深度的影响

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图 13 封堵剂的封堵性能评价

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