欠平衡钻井完井技术在四川天然气勘探新领域的突破

近年来,西南油气田分公司和四川石油管理局针对四川盆地地质特点和储藏特征,联合对欠平衡钻井理论、工艺及装备进行攻关,形成了适合四川盆地的现代欠平衡钻井和完井配套技术。在邛西3井开展配套试验获得成功,这是川西地区碎屑岩地层天然气勘探技术的重大突破。本文介绍了四川开展欠平衡钻井完井技术攻关的情况,阐述了现代欠平衡钻井完井技术要点及发展方向。

Breakthrough in Application of Underbalance Drilling and Completion Technology for Natural Gas Exploration in Sichuan Basin

Based on the geological and reservoir characteristics in Sichuan basin as well as the study of underbalance drilling theory, technique and equipment, Southwest Oil and Gas Field Company and Sichuan Petroleum Administration Bureau have developed modern underbalance drilling and completion technologies suitable for Sichuan basin in the recent years. The technology is successfully tested at Gongxi-3 well. This is a major breakthrough made in natural gas exploration technology of clastic strata in West Sichuan. This paper makes briefing about the study of underbalance drilling and completion technology in Sichuan and elaborates on the main points and development orientation of underbalance drilling and completion technology.