苏53区块全油基钻井液的研究与应用

Research and Application of Oil-Based Drilling Fluid Technology in Block Su 53

李建成 关键 王晓军 孙延德 鲁政权 任艳

Li Jiancheng Guan Jian Wang Xiaojun Sun Yande Lu Zhengquan Ren Yan

中国石油集团长城钻探工程有限公司工程技术研究院, 辽宁盘锦 124010

Engineering Technology Research Institute of CNPC Greatwall Drilling Company, Panjin, Liao-ning, 124010, China

为解决苏53区块石盒子组泥岩段的井壁稳定、携岩净化及润滑防卡等井下复杂问题，研制了全油基钻井液体系。对自主研发的有机膨润土、激活剂、降滤失剂及不同产地的润湿剂进行了室温和200 ℃高温老化后的性能对比优选试验；对优化出的全油基钻井液体系进进了抗温、抗污染、抑制性、悬浮能力、封堵能力和储层保护效果评价。全油基钻井液在苏 53-82-50H 井现场应用过程中性能稳定、易维护，能大幅度提高机械钻速，润滑防卡效果好，井径扩大率小，满足现场施工的各项要求。应用结果表明，自主研发的全油基钻井液体系解决了苏53区块长裸眼水平井钻井中的井下复杂问题，为油基钻井液体系的广泛应用提供了技术保障。

To solve the problems of wellbore instability,hole cleaning and anti-sticking in mudstone section of Shihezi formation of Block Su 53,new oil-based drilling fluids were developed.Indigenous organic clay,activators,filtrate reducer and wetting agents from different areas were used for performance comparison and to test at room temperature and after aging at 200 ℃.The all-oil drilling fluids were evaluated for their high temperature resistance,anti-contamination,inhibition,and suspending abilities,plugging ability and reservoir protection effect,and the wellsite results were examined.During the course of field testing in Well Su 53-82-50H,the all-oil drilling fluids were stable in performance and were easy to maintain,which indicated the new fluids could significantly improve ROP,and have good effect for lubricating and anti-sticking.Further,the hole enlargement rate was small,which fully met the operation requirements at the site.The results showed that oil-based drilling fluids can provide a viable way to solve the problems of drilling in long open-hole horizontal well in Block Su 53,and lessons learned could be provide technical solutions to reservoirs worldwide experiencing the same problems.

国家科技重大专项"复杂地质条件下深井钻井液与高温高压固井技术研究"（编号：2011ZX05021-004）资助。

https://doi.org/10.11911/syztjs.201405011