一种两性离子聚合物凝胶微球的制备与封堵性能

刘锋报; 闫丽丽; 倪晓骁; 蒋官澄; 崔鑫; 王建华

doi:10.12358/j.issn.1001-5620.2021.04.006

一种两性离子聚合物凝胶微球的制备与封堵性能

doi: 10.12358/j.issn.1001-5620.2021.04.006

刘锋报^{1, 2,},
闫丽丽³,
倪晓骁³,
蒋官澄^{4, 5},
崔鑫^{4, 5},
王建华³

1.
中国石油大学（华东）石油工程学院，青岛266580
2.
中石油塔里木油田分公司勘探事业部，新疆库尔勒841000
3.
中国石油集团工程技术研究院有限公司钻井液研究所，北京102200
4.
中国石油大学（北京）油气资源与探测国家重点实验室，北京 102249
5.
中国石油大学（北京）石油工程教育部重点实验室，北京 102249

基金项目: 中国石油集团“重点上产地区钻井液评估与技术标准化有形化研究”项目子课题“纳-微米封堵评价方法研究”（2019D-4226）；中国石油集团工程技术研究院有限公司院级课题”抗240 ℃油基钻井液核心处理剂研发及体系构建“（CPET202024）；中国石油集团工程技术研究院有限公司院级青年基金”纳米材料对高密度钻井液沉降稳定性影响规律研究”（CPETQ202109）

详细信息

作者简介:
刘锋报，在读博士研究生，主要从事深井钻完井液技术研究及管理工作。电话 13579044600；E-mail：liufengbao100@126.com

中图分类号: TE254.4
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出版历程
- 收稿日期: 2021-02-11
- 网络出版日期: 2023-11-09
- 刊出日期: 2021-07-31

Preparation and Plugging Performance of Zwitterionic Polymer Gel Micro Spheres

LIU Fengbao^{1, 2
,},
YAN Lili³,
NI Xiaoxiao³,
JIANG Guancheng^{4, 5},
CUI Xin^{4, 5},
WANG Jianhua³

1.
China University of Petroleum, College of Petroleum Engineering, Qingdao, Shandong 266580
2.
PetroChina Tarim Oilfield Company, Exploration Division, Korla, Xinjiang 841000
3.
CNPC Engineering Technology R&D Company Limited, Drilling Fluid Research Institute, Beijing 102200
4.
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249
5.
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249

摘要

摘要: 针对油基钻井液封堵性不足的难题，以N,N-二甲基丙烯酰胺（DAM）、2-丙烯酰胺基-2-甲基丙磺酸（AMPS）和二烯丙基二甲基氯化铵（DMDAAC）为单体，以N,N-亚甲基双丙烯酰胺（MBA）为交联剂，采用悬浮聚合法合成了一种两性离子聚合物凝胶微球。采用核磁共振氢谱对凝胶微球进行了分子结构表征，并考察了单体投料比、交联剂加量、乳化剂加量等对凝胶微球粒径与封堵性能的影响规律，最终将单体投料比优选为DAM∶AMPS∶DMDAAC=7∶1∶2，MBA加量优选为单体总质量的0.2%，乳化剂加量优选为单体总质量的3%，得到的凝胶微球平均粒径在22 μm左右。在油基钻井液中评价了微球的封堵性能，结果表明，凝胶微球在油基钻井液中的适应性良好，能够在高温下封堵尺寸为5～150 μm范围内的漏缝，效果优于氧化沥青与细目碳酸钙，是一种高性能的微米级封堵剂，具有较好的现场应用潜力。
- 封堵剂 /
- 两性离子聚合物 /
- 凝胶 /
- 微球 /
- 油基钻井液
Abstract: A kind of zwitterionic polymer gel micro spheres have been prepared through suspension polymerization to address the deficiency of plugging capacity of oil based drilling fluids. The raw materials used in the polymerization include N , N -dimethyl acrylamide (DAM), 2-acrylamido-2-methyl propane sulfonic acid (AMPS) and dimethyl diallyl ammonium chloride (DMDAAC), and the crosslinking agent for the polymerization reaction is N , N -methylene-bis-acrylamide (MBA). Using H-NMR spectrometry, the molecular structure of the polymer gel micro spheres was characterized. Effect of the molar ratio of the monomers and the concentrations of the crosslinking agent and emulsifier on the size distribution and plugging performance of the polymer gel spheres was investigated. The optimum molar ratio of the monomers for the polymerization was determined as: DAM∶AMPS∶DMDAAC = 7∶1∶2, the optimum mass concentration of MBA (based on the total mass of the monomers) was 0.2%, and the optimum concentration of the emulsifier (based on the total mass of the monomers) was 3%. The average particle size of the polymer gel micro spheres is about 22 μm. The plugging capacity of the polymer gel micro spheres was tested in oil based muds, and it was found that the polymer gel micro spheres are suitable very well to use in the oil based muds. At 150 ℃, the polymer gel micro spheres can effectively plug fractures of 5-150 μm, a plugging performance better than the combination of oxidized asphalt and fine calcium carbonate. The test results show that the zwitterionic polymer gel micro spheres are a high-performance millimeter-sized plugging agent with good field application potential.
- Plugging agent /
- Zwitterionic polymer /
- Gel /
- Micro sphere /
- Oil based mud

HTML全文

图 1 自研两性离子聚合物凝胶微球产品外观

下载: 全尺寸图片幻灯片

图 2 两性离子聚合物凝胶微球（DAM、AMPS、DMDAAC物质的量投料比为7∶2.5∶0.5）的核磁共振氢谱

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图 3 不同单体物质的量投料比对凝胶微球封堵性能的影响

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图 4 交联剂加量对凝胶微球封堵性能的影响

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图 5 乳化剂加量对凝胶微球封堵性能的影响

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图 6 含凝胶微球的油基钻井液体系在不同温度下热滚16 h后的封堵性能

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图 7 含凝胶微球的油基钻井液体系在不同尺寸漏缝中的封堵性能（150 ℃）

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图 8 不同封堵剂在不同尺寸漏缝中的封堵性（150 ℃）

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表 1 不同单体投料比对两性离子聚合物凝胶微球粒径的影响

DAM∶AMPS∶DMDAAC	平均粒径/ μm	D₅₀/ μm	D₉₀/ μm
7∶2.5∶0.5	16.5	14.4	17.8
6∶3.5∶0.5	15.2	13.5	17.4
7∶1∶2	16.1	15.7	17.0
4.5∶4.5∶1	10.9	9.9	12.3

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表 2 交联剂加量对微球粒径的影响

交联剂/ %	平均粒径/ μm	D₅₀/ μm	D₉₀/ μm
0.2	16.1	15.7	17.0
0.5	15.4	14.1	16.8
1	13.1	12.0	12.9

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表 3 乳化剂加量对微球粒径的影响

乳化剂/ %	平均粒径/ μm	D₅₀/ μm	D₉₀/ μm
1	36.9	40.6	54.3
3	22.0	20.6	26.1
5	16.1	15.7	17.0
7	13.2	13.9	14.4

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表 4 含凝胶微球油基钻井液体系的基本性能

T/ ℃	AV/ mPa·s	PV/ mPa·s	YP/ Pa	Gel/ Pa/Pa	FL_HTHP/ mL
热滚前	70.0	61	9.20	4.0/6.0
80 ℃、16 h	71.0	63	8.18	4.0/6.0	2.8(80 ℃)
120 ℃、16 h	75.5	68	7.66	3.5/5.0	6.2(120 ℃)
150 ℃、16 h	81.5	75	6.64	3.5/5.0	8.4(150 ℃)
注：热滚时间为16 h，FL _HTHP在3.5 MPa下测定

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表 5 含氧化沥青与细目碳酸钙的油基钻井液体系的基本性能

封堵剂	实验/ 条件	AV/ mPa·s	PV/ mPa·s	YP/ Pa	Gel/ Pa/Pa	FL_HTHP/ mL
氧化沥青	热滚前	68.5	58	10.5	4.0/5.5
氧化沥青	150 ℃、16 h	75.0	65	10.0	4.0/6.0	5.8
细目碳酸钙	热滚前	64.5	57	7.5	3.0/3.5
细目碳酸钙	150 ℃、16 h	67.5	61	6.5	3.0/3.5	9.1
注：热滚时间为16 h，FL _HTHP在3.5 MPa下测定

下载: 导出CSV

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