广西百色油田那读组油基钻井液技术  

Oil-based Drilling Fluid Technology of Nadu Formation in Baise Oilfield

作　　者：周成华[1] 张珍[1] 胡德云[1] 杨国兴[1] 邓元洲 

机构地区：[1]中国石化西南石油工程公司钻井工程研究院,四川德阳618014 [2]四川川庆石油钻采科技有限公司,四川广汉618300

出　　处：《西南石油大学学报（自然科学版）》2016年第2期129-135,共7页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家重点基础研究发展计划(973计划)(2013CB228003)

摘　　要：针对广西百色油田那读组地层复杂,在该地层钻进极易发生井壁失稳导致恶性坍塌的井下复杂情况,特别是在水平井钻井施工过程中,更易发生恶性坍塌甚至卡钻的问题,开展了针对性的那读组水平井强封堵油基钻井液体系研究。该钻井液体系以纳米级固-液复合等封堵材料增强封堵性能,同时体系具有较强的抗污染性能、良好的润滑性能等特性。该体系在坤8-6HF井三开进行了现场试验,应用效果表明该体系能有效地保持井眼稳定,优质的油基钻井液性能满足了安全钻井施工的需要,很好地解决了百色地区那读组水平井钻井过程中的恶性坍塌等技术难题。The Nadu formation of Baise Oilfield is fairly complex, in which malignant collapse caused by borehole instability happen easily during drilling. To solve this problem, the strong sealing and inhibitive oil-based drilling fluid is researched and developed. This system comprises of nanoscale solid-liquid sealing material so as to improve the sealing properties and has good anti-pollution, lubricating and rheological properties. The experiment applied in third section of well Kun 8-6HF shows that the oil-based drilling fluid can prevent the wellbore from collapsing and meet the requirement of safe drilling. Thus it has efficiently solved the complex problem of malignant collapse during horizontal well drilling in Nadu formation.

关 键 词：恶性坍塌 百色油田 那读组 油基钻井液 坤8-6HF 

分 类 号：TE254.3[石油与天然气工程—油气井工程]