三门峡盆地油气调查优快钻井技术  

Efficient drilling technology for oil and gas survey in Sanmenxia Basin

作　　者：赵洪波 张龙 沈立娜 张交东 刘旭锋 王丹丹 孟祥龙 胡浩 朱迪斯 ZHAO Hongbo;ZHANG Long;SHEN Lina;ZHANG Jiaodong;LIU Xufeng;WNAG Danan;MENG Xianglong;HU Hao;ZHU Disi(Oil&Gas Survey,China Geological Survey,Beijing 100083,China;Key Laboratory of Unconventional Oil&Gas,China Geological Survey,Beijing 100083,China;Unconventional Oil&Gas Survey Engineering Center,China Geological Survey,Beijing 100083,China;Henan Provincial Third Institute of Resources and Environment Investigation,Zhengzhou Henan 450046,China;Beijing Institute of Exploration Engineering,Beijing 100083,China)

机构地区：[1]中国地质调查局油气资源调查中心,北京100083 [2]中国地质调查局非常规油气地质重点实验室,北京100083 [3]中国地质调查局非常规油气工程技术中心,北京100083 [4]河南省资源环境调查三院,河南郑州450046 [5]北京探矿工程研究所,北京100083

出　　处：《钻探工程》2024年第6期111-118,共8页Drilling Engineering

基　　金：中国地质调查局油气资源调查中心科技创新基金英才培养项目“异形齿PDC钻头破岩机理研究及新型钻头研制”(编号:中地调油科创[2023]-YC03号);中国地质调查局地质调查项目“三门峡盆地及鄂尔多斯南缘盆地群油气调查评价”(编号:DD20230262);“全国油气基础地质调查”(编号:DD20240052)。

摘　　要：南华北三门峡盆地古近系沉积厚度大且分布连续,暗黑色泥岩发育,通过部署钻探工程,有望实现中小盆地油气调查取得新发现。但该类油藏钻井地质环境复杂,砂泥岩互层频现,易引起钻头泥包、井壁坍塌、掉块、涌漏风险并存和难钻进等工程难点。通过钻具组合与井身结构优化、不同井段钻井液技术研究、个性化PDC异形齿钻头研发以及“低转速+中钻压+螺杆+高效PDC钻头”钻井工艺研究,有效解决了井壁稳定性和钻头选型难题,在豫峡地1井实钻中,全面钻进平均机械钻速达到5.67 m/h,实现提高机械钻速30%以上,相比设计钻井周期缩短10 d。创新形成了防泥包钻井液技术体系、长裸眼井壁保护钻井液技术体系、砂泥岩互层高效PDC异形齿钻头提速技术、“两低一高”变密度水泥浆固井技术等可推广的三门峡盆地砂泥岩互层“新优快”钻完井技术体系,可为同类地区钻井工程设计和施工提供有益借鉴。The Paleogene sedimentary thickness in the Sanmenxia Basin in Southern North China is large and continuously distributed,with developed dark mudstone.Through the deployment of drilling projects,new discoveries of oil and gas in small and medium⁃sized basins can be assisted.However,the geological environment for drilling in this type of reservoir is complex,with frequent sand and mudstone interlayers,which can easily cause engineering difficulties such as bit mud entrapment,wellbore collapse,block falling,coexisting risks of leakage,and difficulty in drilling.Through the optimization of drilling tool combination and wellbore structure,research on drilling fluid technology in different sections,development of PDC irregular tooth drill bits,and research on the drilling process of“low speed+medium drilling pressure+screw+high⁃efficiency PDC drill bits”,effectively solved the problems of wellbore stability and drill bit selection.In the actual drilling of Well YXD1,the average mechanical drilling speed of comprehensive drilling reached 5.67m/h,that improved 30%,which shortened the drilling cycle by 10 days compared to the design.Innovations have formed a“new,superior,and fast”drilling and completion technology system for sand and mudstone interlayers in the Sanmenxia Basin,including a mud pack drilling fluid technology system,a long open hole wellbore protection drilling fluid technology system,an efficient PDC shaped cutter drill bit acceleration technology for sand and mudstone interlayers,and a“two low and one high”variable density cement slurry cementing technology that can be promoted.This can provide useful reference for drilling engineering design and construction in similar regions.

关 键 词：油气调查 钻井液体系 PDC异形齿钻头 机械钻速 豫峡地1井 三门峡盆地 

分 类 号：TE242[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]