川西新场构造带须二段致密气藏定向井优快钻井关键技术  

Key technology for optimal fast drilling of directional well in Xujiahe‑2 Formation of Xinchang Structure,Western Sichuan

作　　者：罗翰 LUO Han(Drilling Engineering Research Institute of Sinopec Southwest Petroleum Engineering Co.,Ltd.,Deyang Sichuan 618000,China)

机构地区：[1]中石化西南石油工程有限公司钻井工程研究院,四川德阳618000

出　　处：《钻探工程》2024年第6期132-140,共9页Drilling Engineering

摘　　要：川西新场构造带须家河组二段致密砂岩储层受限于钻井成本与开发收益的不匹配,长期未能形成规模化商业开发。本文根据工区地质特征,通过以必封点、井眼尺寸和井眼轨道优化为核心进行井身结构设计优化,以旋锤钻具、低成本旋转导向工具、预弯曲钻具组合钻井、基于最小机械比能的实时钻井参数优化为核心进行系列提速关键工艺研究,形成了川西新场构造带须二段致密气藏定向井优快钻井关键技术。该技术在区块全面应用,最短钻井周期由231.1 d缩短到95.7 d,取得了良好的运用效果,实现了区块的效益开发。The tight sand formation reservoir of the Xujiahe⁃2 Formation in Xinchang Structure,Western Sichuan has failed to form large⁃scale commercial development for a long time due to the unbalance of drilling cost and development benefit.According to the geological characteristics of the working area,this paper optimized the well structure based on the optimization of setting positions,the hole size,the hole trajectory.The key technology with high speed combining the rotary hammer drilling tools,the low cost of the rotating guide tool,pre⁃bending drilling tools,and the optimization of the real⁃time drilling perameters based onf the minimum mechanical specific energy,which has been the key thechnology for horizontal well driiling in tight gas reservoirs in Xujiahe⁃2 Formation of Xinchang Structure,Western Sichuan.The comprehensive application of this technology in the block has achieved the breakthrough of shortening the shortest drilling cycle from 231.1d to 95.7d,which achieves good results,and realized the benefitial development of the block.

关 键 词：新场构造须二段致密气藏 定向井 优快钻井 旋锤钻具 旋转导向工具 

分 类 号：TE243[石油与天然气工程—油气井工程] P634.5[天文地球—地质矿产勘探]