庆城油田页岩油储层超长水平井示踪剂产出剖面特征  

Tracer Production Profile Characteristics in Qingcheng Oilfield's Shale Oil Reservoirs with Extra-Long Horizontal Wells

作　　者：卓红 陈波 王义俊 何秀玲 刘平 李杰 ZHUO Hong;CHENG Bo;WANG Yijun;HE Xiuling;LIU Ping;LI Jie(Changqing Branch,China National Logging Corporation,Xi'an,Shaanxi 710201,China;Longdong Oil and Gas Development Company,PetroChina Changqing Oilfield Company,Qingyang,Gansu 745000,China;Key Laboratory of Exploration Technology for Oil and Gas Resources(Yangtze University),Ministry of Education,Wuhan,Hubei 430100,China)

机构地区：[1]中国石油集团测井有限公司长庆分公司,陕西西安710201 [2]中国石油长庆油田公司陇东油气开发分公司,甘肃庆阳745000 [3]油气资源与勘探技术教育部重点实验室(长江大学),湖北武汉430100

出　　处：《测井技术》2024年第6期842-853,共12页Well Logging Technology

基　　金：中国石油天然气集团有限公司前瞻性基础性研究重大科技项目“鄂尔多斯盆地页岩油勘探开发理论与关键技术研究”(2021DJ1806);中国石油天然气集团有限公司攻关应用性科技专项“陆相页岩油规模增储上产与勘探开发技术研究”(2023ZZ15YJ01)。

摘　　要：示踪剂监测是一种异于常规电缆测井的全新动态监测技术,能够更直观、更准确地实现对水平井产出剖面的量化评价,该技术可有效解决电缆测井仪器在大斜度、长水平段位移井中“下不去、测不准、测不全”和井筒施工风险大、易发生事故等问题,提升非常规油气藏开发水平。庆城油田长7页岩油储层采用水平井体积压裂技术准自然能量开发,单井水平段长、改造段簇多、初期产液量高,水平井段产出规律尚不清楚,目前,应用压裂示踪剂监测页岩油超长水平井产出剖面在中国属于首例。通过研究庆城油田QH9-X井压裂示踪剂产出剖面测试成果,根据各段产出贡献差异性、产出贡献特征与地质品质、改造方式等因素的关系,总结出页岩油储层水平井产出规律。结果表明:砂堵造成了放喷阶段跟部最先出液,返排不均造成含水率下降较慢,压力分布不均造成各段出液时间不齐,优势甜点段是产液的主要贡献段。通过对页岩油储层超长水平井多段生产条件下的产出剖面特征的研究,为非常规油气藏超长水平井压裂改造和排液生产提供现实依据。Tracer monitoring is a new dynamic monitoring technology that is different from conventional cable logging,which can theoretically achieve a direct and accurate quantitative evaluation of the production profile of horizontal wells.This technology effectively solves the problems of cable logging instruments not being able to go down,not being able to measure accurately,not being able to measure completely,and the risk of wellbore accidents in high-angle and long horizontal wells.It improves the level of development of unconventional oil and gas reservoirs.The horizontal well volume fracturing and quasi-natural energy development are used in Chang7 shale oil reservoir of Qingcheng oilfield.Each well has a long horizontal section,many modification clusters,and a high initial oil production.The production patterns between horizontal sections are not clear.The application of fracturing tracer monitoring for shale oil reservoir super-long horizontal well production in China is unprecedented.By studying the tracer production profile test results of the QH9-X well in the Changqing oilfield,based on the differences in the contribution of each section to production,the relationship between the characteristics of production contribution and geological quality,and the relationship between modification methods,we summarized the production patterns of shale oil reservoir horizontal wells.The results show that sand blockage caused the initial outflow from the toe of the well,uneven return caused the water content to decrease slowly,and uneven pressure distribution caused the outflow times of the sections to be uneven.The dominant sweet spot section is the main contributor to oil production.By studying the production profile characteristics of shale oil reservoir super-long horizontal wells in multiple production conditions,it provides realistic basis for fracturing and production of unconventional oil and gas reservoirs'super-long horizontal wells.

关 键 词：页岩油 超长水平井 压裂示踪剂 产出剖面 产出规律 庆城油田 

分 类 号：P631.84[天文地球—地质矿产勘探]