无黏土水基钻井液用超支化聚合物降滤失剂的合成及性能评价

丁伟俊; 张颖; 余维初; 丁飞; 杨世楚; 蒲洪兵; 段文博

doi:10.3969/j.issn.1006-6535.2024.04.022

特种油气藏 >

2024 , Vol. 31 >Issue 4: 169 - 174

DOI: https://doi.org/10.3969/j.issn.1006-6535.2024.04.022

钻采工程

无黏土水基钻井液用超支化聚合物降滤失剂的合成及性能评价

丁伟俊 ,
张颖 ,
余维初 ,
丁飞 ,
杨世楚 ,
蒲洪兵 ,
段文博

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1.长江大学化学与环境工程学院,湖北荆州 434023;
2.长江大学西部研究院,新疆克拉玛依 834000;
3.油气田清洁生产与污染物控制湖北省工程研究中心,湖北荆州 434023;
4.中国石油长城钻探工程有限公司钻井液公司,辽宁盘锦 124109;
5.中国石油西部钻探工程有限公司,新疆克拉玛依 834000

丁伟俊(2000—),男,2022年毕业于淮北师范大学化学工程与工艺专业,现为长江大学化学工程与技术专业在读硕士研究生,主要从事钻井液处理剂的合成与应用方面的研究。

收稿日期: 2023-07-19

修回日期: 2024-04-17

网络出版日期: 2024-09-20

基金资助

国家自然科学基金“基于碳点荧光标记码监测水平井压裂液剖面的应用基础研究”(52274029);新疆维吾尔自治区克拉玛依市创新环境建设计划(创新人才)项目“高性能水基钻井液降滤失剂的合成及性能评价”(20222023hjcxrc0007)

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Synthesis and Performance Evaluation of Clay-free Water-based Drilling Fluid with Hyperbranched Polymer Filtrate Reducer

Ding Weijun ,
Zhang Ying ,
Yu Weichu ,
Ding Fei ,
Yang Shichu ,
Pu Hongbing ,
Duan Wenbo

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1. College of Chemistry and Environmental Engineering,Yangtze University,Jingzhou,Hubei 434023,China;
2. Western Research Institute of Yangtze University,Karamay,Xinjiang 834000,China;
3. Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields,Jingzhou,Hubei 434023,China;
4. Drilling Fluid Company of CNPC Greatwall Drilling Company, Panjin,Liaoning 124109,China;
5. CNPC XIBU Drilling Engineering Company Limited,Karamay,Xinjiang 834000,China

Received date: 2023-07-19

Revised date: 2024-04-17

Online published: 2024-09-20

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摘要

在高温条件下,聚丙烯酰胺类降滤失剂分子易发生降解,导致降滤失效果大幅下降。为此,通过超支化单体季戊四醇三烯丙基醚(APE)与2-丙烯酰胺-2-甲基丙磺酸(AMPS)、丙烯酰胺(AM)、对苯乙烯磺酸钠(SSS)共聚合成了一种耐高温的超支化聚合物降滤失剂JHPAS,以JHPAS为基础配制了一种新型的无黏土水基钻井液,分析其降滤失机理,评价其在高温、高盐条件下的流变性能和降滤失性能。结果表明:JHPAS具有很好的热稳定性,在水溶液中可形成网络结构,在无黏土水基钻井液中吸附于超细CaCO₃表面形成致密滤饼,并堵塞滤饼上的孔隙,进一步降低钻井液滤失量;构筑的无黏土水基钻井液在200 ℃老化16 h、饱和氯化钠盐水的条件下仍具有稳定的流变性和良好的降滤失性能,API滤失量和高温高压滤失量分别为5.5 mL和7.6 mL。研究成果有助于推动超支化聚合物在深层、超深层油藏钻井液中的研究与应用。

关键词： 水基钻井液; 降滤失剂; 超支化聚合物; 高温储层; 高盐; 深层; 超深层

本文引用格式

丁伟俊 , 张颖 , 余维初 , 丁飞 , 杨世楚 , 蒲洪兵 , 段文博 . 无黏土水基钻井液用超支化聚合物降滤失剂的合成及性能评价[J]. 特种油气藏, 2024 , 31(4) : 169 -174 . DOI: 10.3969/j.issn.1006-6535.2024.04.022

Abstract

Under high temperature conditions,the degradation of polyacrylamide filtrate reducer molecules leads to a significant decrease in filtrate reduction efficiency.To address this issue,a high temperature resistant hyperbranched polymer filtrate reducer(JHPAS)was synthesized through copolymerization of hyperbranched monomer allyl pentaerythritol(APE)with 2-acrylamido-2-methylpropane sulfonic acid(AMPS),acrylamide(AM),and sodium styrene sulfonate(SSS).A novel clay-free water-based drilling fluid was formulated using JHPAS,and its filtrate reduction mechanism was analyzed.The rheological properties and filtrate performance under high temperature and high salt conditions were evaluated.The results demonstrate that JHPAS exhibits excellent thermal stability and has the ability to create a network structure in an aqueous solution. It adsorbs onto the surface of superfine CaCO₃,forming a compact filter cake in clay-free water-based drilling fluid,effectively plugging the pores on the filter cake and consequently reducing the filtrate loss of drilling fluid.The developed clay-free water-based drilling fluid maintains consistent rheological properties and demonstrates effective filtrate loss reduction even after exposure to 200 ℃ aging for 16 hours and saturated sodium chloride brine.The API filtrate loss and high-temperature,high-pressure filtrate loss are measured at 5.5 mL and 7.6 mL,respectively.These research findings contribute to advancing the exploration and utilization of hyperbranched polymers in drilling fluids for in deep and ultra-deep reservoirs.

Key words： water-based drilling fluid; filtrate reducer; hyperbranched polymers; high temperature reservoir; high salt; deep reservoir; ultra-deep reservoir

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