油基钻井液堵漏用吸油黏滞聚合物研制及应用

刘文堂; 张县民; 黄宁; 姜雪清; 李旭东; 杨海; 桂芳

doi:10.12358/j.issn.1001-5620.2025.03.009

油基钻井液堵漏用吸油黏滞聚合物研制及应用

doi: 10.12358/j.issn.1001-5620.2025.03.009

刘文堂^{1, 2,},
张县民^{1, 2, ,},
黄宁^{1, 2},
姜雪清^{1, 2},
李旭东^{1, 2},
杨海^{1, 2},
桂芳^{1, 2}

1.
中石化石油工程钻完井液技术中心, 河南濮阳 457001
2.
中石化中原石油工程有限公司钻井工程技术研究院, 河南濮阳 457001

基金项目: 中石化石化油服项目“红星区块油基钻井液防漏堵漏技术应用研究”（SG23-15K）；集团公司项目“钻井液用封堵剂封堵性能评价方法研究”（H24018）；“多类型气藏钻完井关键技术研究”（P24231）；“万米特深井井筒工作液技术”（P24101）；“羌塘盆地安全高效钻完井关键技术与装备”（P22241）。

详细信息

作者简介:
刘文堂，副研究员，现从事钻完井液技术研究工作。E-mail：liuwentang1979@163.com

通讯作者:
张县民，现从事钻井液技术研究工作。E-mail：zhangxianmin2007@126.com。

中图分类号: TE282
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- 文章访问数: 21
- HTML全文浏览量: 8
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2024-12-06
- 修回日期: 2025-01-28
- 刊出日期: 2025-06-12

Research and Application of the Oil-absorbing Viscous Polymer for Oil-Based Drilling Fluid Plugging

LIU Wentang^{1, 2
,},
ZHANG Xianmin^{1, 2
, ,},
HUANG Ning^{1, 2},
JIANG Xueqing^{1, 2},
LI Xudong^{1, 2},
YANG Hai^{1, 2},
GUI Fang^{1, 2}

1.
Sinopec Oil Engineering Drilling and Completion Fluid Technology Center, Puyang, Henan 457001
2.
Sinopec Zhongyuan Petroleum Engineering Co., Ltd., Drilling Engineering Technology Research Institute, Puyang, Henan 457001

摘要

摘要: 常用堵漏材料被油基钻井液润湿后滑移能力增强，驻留能力降低，容易返吐复漏，堵漏成功率较低。为提高堵漏材料的驻留能力及封堵层稳定性，研制了吸油黏滞聚合物MBS。该聚合物以丁二烯和苯乙烯嵌段共聚物BS为主体，在70℃～90℃下偶联接枝无机矿物材料而成。聚合物MBS的吸油黏滞速率可控，常温下聚合物MBS吸油速率较低，堵漏浆黏度小，便于配制及泵送；在漏层温度下，聚合物MBS吸油速率提高，堵漏浆黏度增大，便于黏滞堵漏，而无机矿物材料提高支撑作用。聚合物MBS吸油倍数达2.94倍，其浓度为5%时，堵漏浆黏滞性增强，流动度降低近50%；浓度为10%时，在2 mm宽的光滑裂缝中有效驻留，正向和反向承压分别为0.69 MPa和0.53 MPa。以MBS为核心处理剂，复配常用堵漏材料，在普陆页XHF井2900～3130 m井段现场应用，有效稳压4.2 MPa，实现堵漏提承压目的，堵漏一次成功。
- 油基钻井液 /
- 堵漏 /
- 吸油黏滞 /
- 聚合物 /
- 驻留能力
Abstract: Lost circulation materials (LCMs), after being wetted by oil-based drilling fluids, have their sliding ability decreased and retention ability increased, causing them to be easy to flow back from the fractures through which the mud is lost and circulation is lost again. Using these LCMs, the success rates of lost circulation control are low. To improve the retention ability of the LCMs and the stability of the plugging layers, an oil absorbing viscous polymer MBS was developed. MBS is mainly composed of butadiene-styrene block copolymer BS and is formed by the coupling and grafting of inorganic minerals at a temperature between 70℃ and 90℃. The rate at which MBS absorbs oil and becomes viscous is controllable. At room temperature, the oil-absorbing rate of the polymer MBS is relatively low, and the viscosity of the LCM slurry is small, making the slurry preparation and pumping very convenient. At the temperature of a lost circulation zone, the oil-absorbing rate of the polymer MBS increases, and the viscosity of the LCM slurry becomes higher, making it convenient for the LCM slurry to be retained inside the fractures through which the mud is lost. Moreover, the inorganic minerals enhance their supporting effects on the LCM slurry. MBS can absorb oils that are 2.94 times of its volume. At a concentration of 5%, the viscosity of the LCM slurry increases, and the fluidity decreases by nearly 50%. When the concentration of MBS is 10%, it can be effectively retained in a smooth fracture with a width of 2 mm, and the pressures bearing capacities in the forward and reverse directions are 0.69 MPa and 0.53 MPa respectively. An LCMs slurry formulated with MBS and other commonly used LCMs was used in the well section of 2,900-3,130 m of the well Puluye XHF. The LCMs slurry effectively stabilized the pressure at 4.2 MPa, achieving the goal of controlling lost circulation and increasing the pressure bearing capacity of the formations. The lost circulation was controlled successfully in the first try.
- Oil-base drilling fluid /
- Lost circulation control /
- Oil absorbing and viscous /
- Polymer /
- Retention ability

HTML全文

图 1 聚合物BS改性前后的红外谱图

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图 2 聚合物MBS的DMA谱图

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图 3 静置温度对聚合物MBS性能影响

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图 4 静置时间对聚合物MBS性能影响（90℃）

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图 5 聚合物MBS加量对堵漏浆黏度和流动度影响

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图 6 压力与封堵层变形程度关系

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图 7 封堵层挤压前后状态（a：挤压前；b：挤压后；c：部分放大）

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图 8 聚合物含量对侵入深度及反向承压的影响

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图 9 封堵层形态

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图 10 普陆页XHF井二开井段套压与挤注量关系

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