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.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
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)
关键词
恶性坍塌
百色油田
那读组
油基钻井液
坤8-6HF
malignant collapse
Baise Oilfield
Nadu Formation
oil-base drilling fluid
Well Kun 8-6HF
