调整井固井用聚合物型抗水侵材料的制备及其性能评价

doi:10.16085/j.issn.1000-6613.2020-0776

化工进展 ›› 2021, Vol. 40 ›› Issue (3): 1565-1573.DOI: 10.16085/j.issn.1000-6613.2020-0776

调整井固井用聚合物型抗水侵材料的制备及其性能评价

李治衡¹(), 张晓诚¹, 董平华¹, 张磊¹, 窦蓬¹, 刘欢²()

^1.中海石油（中国）有限公司天津分公司；海洋石油高效开发国家重点实验室，天津 300459
^2.西南石油大学化学化工学院，四川成都 610500

收稿日期:2020-05-09 出版日期:2021-03-05 发布日期:2021-03-17
通讯作者: 刘欢
作者简介:李治衡（1984—），男，工程师，研究方向为油田前期研究及科研工作。E-mail：lizhh57@cnooc.com.cn。
基金资助:
渤海油田强化水驱及增产挖潜技术(CNOOC-KJ135ZDXM36TJ01TJ)

Preparation and performance evaluation of polymer anti water invasion material for adjustment well cementing

LI Zhiheng¹(), ZHANG Xiaocheng¹, DONG Pinghua¹, ZHANG Lei¹, DOU Peng¹, LIU Huan²()

^1.State Key Laboratory Offshore Oil Exploitation; CNOOC China Limited (Tianjin Branch), Tianjin 300459, China
^2.College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China

Received:2020-05-09 Online:2021-03-05 Published:2021-03-17
Contact: LIU Huan

摘要/Abstract

摘要：

针对调整井固井时水侵导致的环空窜流问题，本文以AMPS、AM、AA和SA为原料，通过自由基胶束聚合法制备一种水溶性疏水缔合聚合物AAAS来增强固井水泥浆的抗水侵能力，改善水泥浆的防窜能力，以提高该类井的固井质量。利用红外、核磁、扫描电镜及凝胶渗透色谱等手段对AAAS进行了微观分析表征，并对AAAS水泥浆体系的抗水侵性能及基本工程性能进行了评价，结果表明AAAS可明显提高水泥浆体的抗水侵能力，较之于空白水泥浆水侵后0.3MPa的窜通压力，加量为0.9%AAAS的水泥浆体系，其水侵后的窜通压力提高达到了6.9MPa，大幅度提高了水泥浆的防窜能力，且14天抗折强度为8.2MPa，抗压强度为31.5MPa，能够满足调整井固井水泥环长期封固的需要。因此，AAAS在调整井固井工程抗水侵和防窜中具有良好的应用前景。

关键词: 疏水缔合聚合物, 水侵, 防窜

Abstract:

Based on the problem of annulus channeling caused by water invasion of the adjustment during wells cementation, AMPS, AM, AA and SA were used as raw materials to prepare a water-soluble hydrophobically associating polymer AAAS by free radical micelle polymerization to enhance the anti water invasion ability of cementing slurry and improve the channeling resistance of cement slurry in order to improve the cementing quality of such wells. The microstructure was characterized by means of IR, NMR, SEM and GPC. The water invasion resistance and basic engineering performance of AAAS cement slurry system were evaluated. The results showed that AAAS can significantly improve the water invasion resistance of cement paste. Compared with the 0.3MPa water invasion channeling through pressure of blank cement slurry, the water invasion channeling through pressure of 0.9% AAAS cement slurry system was increased to 6.9MPa, which greatly improved the anti channeling ability of cement slurry. The 14d bending strength was 8.2MPa and the compressive strength was 31.5MPa, which can meet the needs of long-term cementing of adjustment wells. Therefore, it was expected that AAAS would have a good application prospect in anti water invasion and channeling prevention of adjustment well cementing engineering.

Key words: hydrophobically associating polymer, water invasion, anti-channeling

中图分类号:

TQ314.2

李治衡, 张晓诚, 董平华, 张磊, 窦蓬, 刘欢. 调整井固井用聚合物型抗水侵材料的制备及其性能评价[J]. 化工进展, 2021, 40(3): 1565-1573.

LI Zhiheng, ZHANG Xiaocheng, DONG Pinghua, ZHANG Lei, DOU Peng, LIU Huan. Preparation and performance evaluation of polymer anti water invasion material for adjustment well cementing[J]. Chemical Industry and Engineering Progress, 2021, 40(3): 1565-1573.

图/表 13

图1 水侵模拟装置及评价方法1—釜体；2—水泥浆；3—模拟岩心；4—模拟岩心贯穿孔；5—模拟固井二界面；6—釜体底盖，7—釜体顶盖；8—凸出卡槽；9—水流入口；10—水流出口；11—侧窜入口；12—侧窜出口；13—水泥浆罐入口

图2 AAAS的合成路线

图3 AAAS的红外光谱

图4 AAAS的核磁共振谱

图5 AAAS水溶液的SEM照片

图6 AAAS的分子量分布曲线

图7 AAAS的临界缔合浓度测定

图8 不同添加量的AAAS对水泥浆防窜能力的影响

图9 水侵空白及AAAS水泥石的SEM照片

图10 水侵空白及AAAS水泥石的XRD谱图

图11 AAAS对水泥石力学性能的影响

表1 AAAS对水泥浆常规性能的影响

AAAS质量分数/%	流动度/cm	失水量/mL
0	24	67
0.3	22.5	59
0.5	21.6	52
0.7	19.7	48
0.9	18.8	46

图12 稠化曲线

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调整井固井用聚合物型抗水侵材料的制备及其性能评价

Preparation and performance evaluation of polymer anti water invasion material for adjustment well cementing

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