旋转导向钻进中改性植物纤维随钻堵漏室内研究及评价  

Development and mechanism of plugging agent while drilling for rotary guide

作　　者：贾永红 郭友 张蔚 叶安臣 贺垠博[2] JIA Yonghong;GUO You;ZHANG Wei;YE Anchen;HE Yinbo(Drilling fluid Branch of CNPC Western drilling Engineering Co.,Ltd.,Karamay 834000,China;College of Petroleum Engineering,China University of Petroleum-Beijing,Beijing 102249,China)

机构地区：[1]中国石油集团西部钻探工程有限公司钻井液分公司,克拉玛依834000 [2]中国石油大学(北京)石油工程学院,北京102249

出　　处：《石油科学通报》2025年第1期144-155,共12页Petroleum Science Bulletin

基　　金：国家自然科学基金项目“深海深井钻井液漏失机理与防治方法研究”(U23B2082)资助。

摘　　要：随着油气资源开采难度加大,旋转导向钻井已经成为控制井眼轨迹和连接油藏的重要技术。旋转导向钻井过程中,遇到地层漏失时常需添加随钻封堵剂,但目前主要采用的小尺寸堵漏材料可能降低堵漏效果,尤其是纤维类材料,因其长径比大且易交织,会导致钻井液黏度增加,严重时引发卡钻。本文研发了一种随钻堵漏纤维,并与现场堵塞旋导筛网的纤维材料进行了对比分析。研究结果表明,研发纤维符合行业标准,具备良好的过旋导性能和承压封堵性能。在钻井液体系中添加3%改性纤维后,能在150℃、6 MPa的条件下能够有效封堵20~40目石英砂,30 min累计漏失量仅为4 mL。该研究对于旋转导向钻具用随钻堵漏材料的选择有重要现场指导意义。With the increasing difficulty of oil and gas resources extraction,rotary guided drilling has become an important technology for controlling the trajectory of the borehole and connecting the reservoir.In the process of rotary guided drilling,it is often necessary to add plugging agent with drilling when encountering formation leakage,but the small-sized plugging materials mainly used nowadays may reduce the plugging effect,especially fiber-based materials,which,due to their large length-to-diameter ratios and easy to be intertwined,will lead to an increase in the viscosity of the drilling fluid,and in serious cases,trigger stuck drilling.In this paper,a kind of plugging fiber with drilling was developed and compared with the fiber material for plugging rotary guide screen in the field.The results show that the developed fiber complies with the industry standard and has good performance of over-spinning conductivity and pressure-bearing plugging performance.After adding 3%modified fiber to the drilling fluid system,it can effectively block 20~40 mesh quartz sand at 150℃and 6 MPa,and the cumulative leakage is only 4 mL in 30 min.This study is of great significance for the selection of plugging materials for rotary guided drilling tools.

关 键 词：堵漏剂 防漏堵漏 水基钻井液 旋转导向钻井 改性植物纤维 

分 类 号：TE28[石油与天然气工程—油气井工程] TQ35[化学工程]