CAJ | 학술논문

针对川西油田水平井机械钻速低、起下钻频繁和钻井周期长的问题，在底部钻具组合力学分析的基础上，对水平段稳斜钻具组合进行优选，并提出了以水平段轨迹控制技术、井眼清洁控制技术、 P DC钻头优选技术、润滑防塌钻井液技术和无线随钻测量技术为核心的川西中浅层气藏千米水平段一趟钻关键技术。应用一趟钻关键技术在川西地区完成了多口井的施工，与2011年完钻同类型水平井相比，钻井技术指标大幅提升，沙溪庙组水平井在水平段长增加434 m的情况下，钻井周期缩短13?71％，机械钻速提高37?99％；蓬莱镇组水平井钻井周期缩短38?00％，机械钻速提高24?83％。
침대천서유전수평정궤계찬속저、기하찬빈번화찬정주기장적문제，재저부찬구조합역학분석적기출상，대수평단은사찬구조합진행우선，병제출료이수평단궤적공제기술、정안청길공제기술、 P DC찬두우선기술、윤활방탑찬정액기술화무선수찬측량기술위핵심적천서중천층기장천미수평단일쟁찬관건기술。응용일쟁찬관건기술재천서지구완성료다구정적시공，여2011년완찬동류형수평정상비，찬정기술지표대폭제승，사계묘조수평정재수평단장증가434 m적정황하，찬정주기축단13?71％，궤계찬속제고37?99％；봉래진조수평정찬정주기축단38?00％，궤계찬속제고24?83％。
To address the horizontal well issues in western Sichuan like low ROP , frequent tripping and long drilling period, the BHA for horizontal section hold angle drilling is optimized?The key technologies of one?trip drilling for middle?shallow gas reservoir development, as the horizontal wellbore trajectory control technology, hole cleaning technology, PDC bit optimization, lubricating and anti?collapse drilling fluid technology and wireless MWD technology as the core technologies, is presented?Applications of the one?trip technology in several wells in western Sichuan show a significantly improved drilling index compared with similar horizontal wells drilled in 2011?For Shaximiao formation, the horizontal section has been increased 434 m with shortened drilling period of 13?71% and increased ROP of 37?99 %; For Penglaizhen formation, the horizontal section drilling period has been shortened by 38?00% and the ROP has been increased 24.83%.