摘要
川东北地区探井钻井过程常遇到“漏、斜、卡、塌、喷”等井下复杂情况或事故，造成机械钻速慢，严重影响了勘探开发进度和效益，为此，试验应用了一系列提高该地区探井钻速的钻井新技术，包括气体钻井技术、垂直钻井技术和复合钻井技术。现场应用结果表明：在上部陆相地层，气体钻井井段的平均机械钻速达到5．66～7．06m／h，垂直钻井井段的平均机械钻速1．97m／h；在下部海相地层，复合钻井井段的平均机械钻速2．32m／h。通过应用上述新技术，较好地实现了钻井提速的目标，为川东北地区勘探任务的如期完成提供了技术保障，逐步形成了适应该地区地质特点的探井快速钻井技术配套体系。
Drilling rate and efficiency was reduced by downhole problems in drilling exploratory well in Northeast Sichuan area, including leakage, deviation, sticking, collapse and blowout. Therefore, a series of new drilling technique to improve drilling rate of exploratory wells in this region was experimentally used, including gas drilling, vertical drilling and compounding drilling technology. The results suggest that the average rate of penetration （AROP） could reach 5.80-7.06 m/h using gas drilling, the AROP was 1.97 m/h using vertical drilling in the upper terrestrial formation; the AROP was 2.23m/h with compounding drilling in the lower marine formation. Through using the above new technique, the drilling speed was improved, which provided technique support to achieve the exploring plan in this area. The rapid drilling technique for exploration wells was developed gradually.
出处
《石油钻探技术》
CAS
北大核心
2008年第3期37-40,共4页
Petroleum Drilling Techniques
关键词
气体钻井
直井
探井
川东北地区
gas drilling
straight well
exploratory well
Northeast Sichuan area
