摘要
东海油气田是我国海上当前勘探开发的主要区域之一,该油田主要储层埋藏较深,钻井过程揭开多套地层,深部地层岩石抗压强度达到了100 MPa以上,可钻性差、地层温度较高。钻井过程中面临井壁失稳、机械钻速低、轨迹难以控制等诸多问题。针对上述问题,通过对国内外相关提速技术的调研,优选液力冲击工具开展东海深部地层的钻井提速研究与实践。该工具结构简单、可靠性较高,通过加放位置分析、操作参数优选,使现有钻井设备与工艺参数基本不改变,而创新性地提出了旋转导向与液力冲击工具配合,最终在X4H井的应用中机械钻速提高30%~200%,效果显著。
The East China Sea oil and gas field is currently one of the main offshore exploration and development areas in China,where the main reservoirs are deeply buried,the compressive strength of deep strata is above 100 MPa with the conditions of poor drillability and high formation temperature.There are problems of wellbore instability,low ROP,difficult trajectory control and some others in drilling process.In view of the above,through the investigation of the related efficiency raising technologies both in China and abroad,the research and practice of effective drilling in the deep formation of East China Sea are carried out and hydraulic impact tool is selected,which has the advantages of simple structure and high reliability.By the analysis on the installing location and the optimization of operation parameter,the existing drilling equipment and technological parameters are kept original,while the innovative coordination of rotary steering and hydraulic impact tool is put forward,in the application of well-X4 H,the ROP is significantly improved by 30%~200%.
出处
《探矿工程（岩土钻掘工程）》
2018年第2期30-32,45,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
液力冲击工具
机械钻速
轨迹控制
旋转导向
东海油气田
hydraulic compact tool
ROP
trajectory control
rotary steering
East China Sea oil and gas field
