利用长水平井实现超薄层未动用储量有效开发——以下二门油田梨树凹区块为例  

Effective development of unutilized reserves in ultra-thinformations by using long horizontal wells——a case study of Lishuao block in Xiaermen Oilfield

作　　者：李伟才[1,2] 刘宇 张云 杨璐[1,2] 闫荣杰 LI Weicai;LIU Yu;ZHANG Yun;YANG Lu;YAN Rongjie(Exploration&Development Research Institute of Henan Oilfield Company,SINOPEC,Nanyang 473000,Henan,China;Henan EOR Key Laboratory,Nanyang 473000,Henan,China)

机构地区：[1]中国石化河南油田分公司勘探开发研究院,河南南阳473000 [2]河南省提高石油采收率重点实验室,河南南阳473000

出　　处：《石油地质与工程》2024年第3期18-22,共5页Petroleum Geology and Engineering

基　　金：中国石油化工股份有限公司河南油田分公司科研项目“探明未动用储量评价及动用对策研究”(2021-029)资助。

摘　　要：泌阳凹陷下二门油田梨树凹区块受有效厚度薄、含油层位单一、储层物性差、单井产量低等因素限制,探明储量动用程度低,开发效果差。为提高该区储量动用程度,积极推广应用水平井开发技术,通过加强油藏地质综合研究,进一步落实了可动用潜力;地质工程一体化实施过程中,通过多靶点+近钻头方位伽马技术严控水平段轨迹,提高了储层及油层钻遇符合率;通过优化射孔井段,提高了单井产量,逐步形成了一套适合河南油田薄层油藏长水平井开发技术。现场实施结果表明,水平井实钻水平段长达892 m,储层钻遇符合率为100%,油层钻遇符合率为91.4%,初期日产油14.1 t。该区块水平井的成功实施,为超薄层油藏挖潜技术指出方向,对河南油田未动用储量的有效开发具有一定的指导意义。Due to factors such as thin effective thickness,single oil bearing layer,poor reservoir properties,and low single well production,the Lishuao block in the Xiaermen Oilfield of the Biyang Sag has low utilization of proven reserves and poor development effects.In order to improve the reserve utilization in the area,the technology for horizontal well development is promoted and the exploitable potential is further realized by strengthening the reservoir geology study.In the process of geological-engineering,the technology for multi-target+near-bit azimuth gamma is used to strictly control the horizontal section trajectory,and the drilling coincidence rate is improved.By optimizing the perforation well section,the single well production has been improved,gradually forming a set of development techniques suitable for long horizontal wells in oil reservoirs with thin layers in Henan Oilfield.The on-site implementation results show that the horizontal section length of the horizontal well is 892 m,with 100%for reservoir drilling and 91.4%for oil reservoir drilling,and the initial daily oil production is 14.1 t.The successful horizontal wells implementation in this block points out the direction for tapping the potential of ultra-thin oil reservoirs and has a good guiding reference for the effective development of unutilized reserves in Henan Oilfield.

关 键 词：河南油田 梨树凹区块 未动用储量 长水平井 薄层油藏 

分 类 号：TE313[石油与天然气工程—油气田开发工程]