摘要
缅甸D区块的复杂地质状况给钻井作业带来了很大的困难和挑战,其中井斜、井漏、井涌和井塌是该区块钻井过程中存在的主要问题。对缅甸D区块钻井作业的特点和难点进行了详细分析,从利用缅甸D区块高陡构造的自然造斜规律优化调整井位及井眼轨迹、优化钻具组合、钻头选型方面给出了可行的技术方案,并提出了解决软泥岩泥包牙轮钻头及解决井壁稳定的技术措施。这些技术在Patolon-1井、Yagyi-1井、Patolon-2井和Yagyi-1X井进行了应用,取得了很好的效果,机械钻速明显提高,逐渐形成了适合缅甸D区块复杂地质条件的优快钻井技术,较好地解决了缅甸D区块高陡构造井斜控制困难、井壁稳定性差、机械钻速慢的问题。
The complex geological conditions in Block D of Myanmar induced great difficulties and challenges,among which inclination,lost circulation,well kick and well collapse are the main problems.The characteristics and challengers of drilling operation in Block D of Myanmar were analyzed.A feasible technique solution was proposed using deep structures’ natural laws of optimal adjustment to adjust well location,well trajectory,BHA optimization,and drill bit selection.The technique measures to solve soft mudstone ball up roller bit and wellbore stability were proposed.All these techniques were used in Well Patolon-1,Well Yagyi-1,Well Patolon-2 and Well Yagyi-1X.The results are good and the drilling speeds are improved.The drilling technique suitable for complex geological conditions of Block D of Myanmar was formed.The problems of difficulty in well deviation control in deep structure in Block D,poor well bore stability and low drilling speed were solved.
出处
《石油钻探技术》
CAS
北大核心
2010年第5期22-25,共4页
Petroleum Drilling Techniques
关键词
高陡构造
井斜
井塌
井漏
井溢流
优快钻井
缅甸D区块
precipitous structure； hole deviation； hole caving； lost circulation； well overflow； optimized drilling； Block D in Myanmar
