摘要
巴麦地区是中国石化在西北地区的勘探开发新区,钻井过程中存在中上部地层阻卡严重,二叠系、石炭系井壁稳定性差,深部地层可钻性差、机械钻速低等技术难点。针对这些技术难点,进行了高压喷射钻井技术和优化水力参数的研究与现场试验,优选了钻头和螺杆类型,进行了涡轮复合钻井技术研究与现场试验,提出了微裂缝地层井壁稳定技术。结果表明:高压喷射钻井技术与常规钻井相比,平均机械钻速提高26.0%～29.3%;311.1和215.9mm井眼段采用优选的钻头,机械钻速分别提高29.0%和43.0%;二开和四开井段采用优选的螺杆,机械钻速提高27.0%～100.0%;高速涡轮复合钻井与常规钻井相比,机械钻速提高146.0%,与螺杆复合钻井相比机械钻速提高20.0%;中速涡轮复合钻井与螺杆复合钻井相比,机械钻速提高23.0%;应用微裂缝地层井壁稳定技术后未出现井壁失稳问题,实现了微裂缝地层安全钻井。
Bamai Area is a new exploration area in Northwest China.A series of drilling problems occurred during drilling,such as drillpipe stuck in upper layers,poor wellbore stability in Permian system and Carboniferous system,low penetration rate in deep layers etc.In order to solve these problems,high pressure jet drilling and hydraulic parameters optimization were investigated and tested at wellsite.Drilling bit and screw were optimized,compound PDM drilling technology were investigated and tested and the wellbore stability technology for micro-cracks formation was put forwarded.The test results showed that high pressure jet drilling technology increased average penetration rate by 26.0%-29.3% compared with conventional drilling technology.The optimized drill bit improved average penetration rate by 29.0% and 43.0% for 311.1 and 215.9 mm hole respectively.Optimized compound PDM（screw）drilling technology increased drilling rate by 27.0%-100.0% during second and fourth spud.High-speed turbine drilling technique increased penetration rate by 146.0% compared with conventional drilling,the penetration rate increased by 20.0% compared with compound PDM（screw）drilling technology.The application of wellbore stability technology solved the problem of wellbore instability and achieved safe drilling in micro-cracks formation.
出处
《石油钻探技术》
CAS
北大核心
2011年第6期11-14,共4页
Petroleum Drilling Techniques
基金
中国石化集团石油工程技术先导试验项目"巴麦地区深井钻井提速技术先导试验"(编号:SG10098)部分研究内容
关键词
深井钻井
高压喷射钻井
螺杆钻具
涡轮钻具
机械钻速
巴麦地区
deep well drilling
high pressure jet drilling
screw drill tool
turbine tool
penetration rate
Bamai Area
