低液量水平井连续油管气举产液剖面测井技术应用  

Application of Coiled Tubing Gas Lift Profile Logging Technology in Low Fluid Volume Horizontal Wells

作　　者：朱洪征[1,2] 郑刚[1,2] 刘洋[3] 侯伟[4] 苏祖波[1,2] 杨海涛 ZHU Hongzheng;ZHENG Gang;LIU Yang;HOU Wei;SU Zubo;YANG Haitao(Oil&Gas Technology Research Institute,PetroChina Changqing Oilfield Company,Xi’an,Shaanxi 710018,China;Low-permeability Oil and Gas Exploration and Development of National Engineering Laboratory,Xi’an,Shaanxi 710018,China;No.1 Oil Production Plant,PetroChina Changqing Oilfield Company,Yan’an,Shaanxi 716009,China;No.8 Oil Production Plant,PetroChina Changqing Oilfield Company,Xi’an,Shaanxi 710021,China)

机构地区：[1]中国石油长庆油田分公司油气工艺研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [3]中国石油长庆油田分公司第一采油厂,陕西延安716009 [4]中国石油长庆油田分公司第八采油厂,陕西西安710021

出　　处：《测井技术》2024年第3期380-386,共7页Well Logging Technology

基　　金：中国石油天然气集团(股份)重大工程技术现场试验项目“水平井找堵水技术试验”(2019F-28)。

摘　　要：产液剖面测试找水是了解生产层段产液状况,为油藏动态调整提供依据的重要手段,是油田开发的一项主要工作。针对低渗透油藏水平井单井产液低,常规产液剖面测试技术准确性差及分段生产测试效率低的问题,提出采用2 in^(*)预置式穿芯连续油管带测井仪器入井测试,通过氮气气举井筒排液,连续油管拖动井下测井仪器连续监测为核心的快速找水新方法。设计了制氮车+油管悬挂器+3½in普通油管+喇叭口的负压生产管柱,以及2 in穿芯连续油管+卡瓦连接器+测井连接工具串+测井仪器串的测试管柱,研制了连续油管测井连接工具、电滑环滚筒电缆密封固定器和FIT测井仪器等关键配套装置,形成了低液量水平井连续油管气举产液剖面测井快速找水技术。开展了6口井现场先导试验,试验过程中,井下测试信号无交流电干扰,保证了实时数据传输优势,真正做到了井下监测与地面实时可读同步。该技术可实现1天测试1口井,为定量快速解释低液量水平井产液分布状况提供了新的技术手段。Water production profile test is an important means to know the production status of production interval and provide basis for reservoir dynamic adjustment.It is also a main work of oilfield development.In order to solve the problems of low liquid production in single horizontal well in low permeability reservoir,low accuracy and low efficiency of subsection production test by using conventional liquid production profile test technique,the idea of technology integration is adopted.A new method of rapid water-finding is proposed,which is based on the continuous monitoring of downhole logging tools by using a 2 in pre-arranged coiled tubing tool with core-piercing coiled tubing and nitrogen gas lift to drain fluid from the wellbore and coiled tubing to drag downhole logging tools.The negative pressure production string with nitrogen production vehicle+tubing Hanger+3½in ordinary tubing+trumpet mouth,and the testing string with 2 in coiled tubing+cava connector+logging connecting tool+logging tool string is designed.Key supporting devices such as continuous tubing logging connection tool,electric slip ring drum cable seal holder and FIT logging tool have been developed to form the rapid water search technology of coiled tubing gas lift profile logging in low fluid volume horizontal Wells.The field pilot test of 6 wells was carried out.During the test,the underground test signal was not interfered by alternating current,which ensured the advantage of real-time data transmission,and truly realized the real-time readable synchronization between the underground monitoring and the surface.This technology can test one well a day,and provides a new technical means for quantitative and rapid interpretation of fluid production distribution in horizontal wells with low fluid volume.

关 键 词：生产测井 低液量 水平井 产液剖面 连续油管输送 氮气气举 

分 类 号：P631.84[天文地球—地质矿产勘探]