超分子化学堵漏技术研究与应用

王勇; 蒋官澄; 杜庆福; 薛民生; 杨萍; 刘建全; 刘永峰; 李英进

doi:10.3969/j.issn.1001-5620.2018.03.008

超分子化学堵漏技术研究与应用

doi: 10.3969/j.issn.1001-5620.2018.03.008

1. 渤海钻探工程公司第四钻井分公司, 河北任丘 062552;
2. 教育部石油工程重点实验室·油气资源与探测国家重点实验室·中国石油大学(北京)石油工程学院, 北京 102209;
3. 西部钻探准东钻井公司, 新疆昌吉 831500;
4. 渤海钻探第二录井分公司, 河北任丘, 062552

基金项目:

国家十三五科技重大专项“复杂结构井、丛式井设计与控制新技术”（2017ZX05009-003）、国家自然科学基金面上项目“钻探天然气水合物中井壁稳定性及钻井液低温流变性的控制方法研究”（51474231）、国家十三五科技重大专项“页岩气水平井用水基钻井液”（2016ZX05022-001-001）、国家自然科学创新研究群体“复杂油气井钻井与完井基础研究”（51521063）。

详细信息

作者简介:
王勇,博士,高级工程师,1971年生,现在主要从事钻井工程研究工作.电话18722012800;E-mail:910935539@qq.com。

中图分类号: TE282
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出版历程
- 收稿日期: 2017-12-14
- 刊出日期: 2018-05-30

Study and Application of Supramolecule Chemical LCM Technology

1. The Fourth Drilling Branch of CNPC Bohai Drilling Engineering Company Limited, Renqiu, Hebei 062552;
2. MOE Key Laboratory of Petroleum Engineering, China University of Petroleum;State Key Laboratory of Oil and Gas Resource and Prospecting, China University of Petroleum;School of Petroleum Engineering, China University of Petroleum, Beijing 102249;
3. Zhundong Drilling Branch of CNPC Xibu Drilling Engineering Company Limited, Changji, Xinjiang 831500;
4. No.2 Mud Logging Company, BHDC, Hebei, Renqiu 062552

摘要

摘要: 采用目前国际上近年发展起来的超分子化学理论，研发了一种超分子堵漏新材料，其能够适应不同深度地层，在不同温度下形成不同强度和弹性的凝胶，具有广泛适应性。经过实验研究，分别研发出针对不同漏失情况的堵漏技术，解决了以前堵漏剂在漏层中停不住、易被水混合冲稀、难以滞留堆集在漏层入口附近、难以堵死漏失通道等技术难题。使用该超分子堵漏剂配制的堵漏浆在可控时间内在漏失层形成具有一定强度的凝胶颗粒（粒径为100～2 000 μm），凝胶颗粒有弹性、易变形，可以进入地层孔隙或裂缝，封堵孔隙尺寸为0.15～1.5 mm的孔隙，承压达到7.5 MPa以上。采用该超分子堵漏材料，在准东区块克205井等3口井进行了应用。现场应用表明，该超分子堵漏材料结合常规堵漏材料，能够很好地解决钻进过程中存在的各类漏失，堵漏成功率高，对不同的漏失情况能够起到较好的堵漏效果，在后期作业过程中没有发生重复漏失的现象，有利于降低综合钻井成本。
- 超分子 /
- 堵漏材料 /
- 井漏 /
- 凝胶 /
- 钻井液
Abstract: A supramolecular chemical lost circulation material (LCM) has been prepared based on the supramolecular chemistry theory recently developed. This LCM can be used to control mud losses at different depths. It forms gels of different strengths and elasticity at different temperatures. Lost circulation control techniques have been developed for different rates of mud losses through laboratory experiments. Various problems have been encountered in mud loss control practices, for example, the LCM is unable to stay in mud loss zones, the LCM is easy to mix with water and is therefore diluted, it is difficult for the LCM to be retained and accumulate at the entrance of mud loss channels, and the mud loss channel is difficult to be blocked off, etc. LCM slurries formulated with the supramolecular chemical LCM form gel particles (particle sizes between 100 μm and 2,000 μm) of certain strengths in controllable time span. These elastic deformable gel particles are able to go into and plug formation fractures of 0.15 mm-1.5 mm in size. Fractured formations plugged with the supramolecular chemical LCM have pressure bearing capacity of at least 7.5 MPa. This LCM has been used on three wells (such as the well Ke-205) in Block Zhundong. Field practice showed that a combination of the supramolecular chemical LCM and conventional LCM can be used to control mud losses of different rates during drilling operations. No mud losses have been encountered again in mud loss zones plugged with the supramolecular chemical LCM slurry, indicating that the mud loss control performed was successful. The use of this supramolecular chemical LCM is helpful in reducing the overall drilling cost.
- Supramolecule /
- Lost circulation material /
- Lost circulation /
- Gel /
- Drilling fluid

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参考文献(6)

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