数字式分层注水实时监控系统的设计与应用  

Design and Application of Real-time Monitoring System in Digital Layered Water Injection

作　　者：胡改星 姬振宁[1,2] 刁广智 冯杰瑞 汪广轮[4] 靳筱宣 王尔珍 HU Gaixing;JI Zhenning;DIAO Guangzhi;FENG Jierui;WANG Guanglun;JIN Xiaoxuan;WANG Erzhen(Oil&Gas Technology Research Institute,PetroChina Changqing Oilfield Company,Xi′an,Shaanxi 710021,China;National Engineering Laboratory for Low Permeability Petroleum Exploration and Development,Xi′an,Shaanxi 710021,China;No.5 Oil Production Plant,PetroChina Changqing Oilfield Company,Xi′an,Shaanxi 710200,China;No.12 Oil Production Plant,PetroChina Changqing Oilfield Company Xi′an,ShaanXi 710016,China;No.2 Oil Production Plant,PetroChina Changqing Oilfield Company,Qingyang,Gansu 745100,China)

机构地区：[1]中国石油长庆油田公司油气工艺研究院 [2]低渗透油气田勘探开发国家工程实验室 [3]中国石油长庆油田分公司第五采油厂 [4]中国石油长庆油田分公司第十二采油厂 [5]中国石油长庆油田分公司第二采油厂

出　　处：《钻采工艺》2022年第4期114-118,共5页Drilling & Production Technology

基　　金：中国石油与天然气股份公司专项“长庆油田波码通信控制分层注水技术与现场试验”资助(编号:kt2021-15-03)。

摘　　要：随着超低渗油气藏注水开发时间的延长,受储层非均质性的影响,层间吸水差异大,造成储藏动用程度严重不均、层间矛盾突出,影响整体开发效果。常规的分层注水技术存在测调过程复杂、分注合格率下降快且不能实时监测和调节井下分层注水量等问题。采用压力波进行地面/井下双向无线通讯的智能分注技术可以在一定程度上解决上述难题,基于该技术的数字式分层注水实时监控系统由井下智能配水器、地面控制装置和数据的远程无线传输模块组成,可实现井下分层流量的自动调节及注水参数的实时监测与上传、注水井动态数据的远程无线传输与分享等。现场试验1 600余口井,分注合格率长期保持在95%以上;试验区水驱动用程度提高2%~3%,自然递减降低1%~2%,效果良好。智能分注技术的完善与推广可为储层动态分析及油田注水策略的及时调整提供必要的依据与手段。With the prolongation of water injection development time of ultra-low permeability reservoirs, affected by the heterogeneity of reservoir, the water absorption difference between layers varies greatly, leading to serious unevenly interlayer contradiction and affecting the overall development effect. Traditional layered water injection technology used to solve strong interlayer contradiction faces several problems, including complex manual measurement and regulation procedure, fast decline in water flow qualified rate, and lack of real-time monitoring and adjusting the downhole layered water injection volume. Therefore, an intelligent layered water injection technology is proposed. It is based on two-way wireless communication between surface and downhole via pressure wave. The major components of this proposed technology are downhole intelligent water distribution, surface control device and data remote wireless transmission module. It can realize multiple functions, including automatic regulation of downhole layered flow rate, real-time monitoring and uploading of water injection parameters, and remote wireless transmission and share of dynamic data of water injection well. This technology has been applied in more than 1600 wells with the qualified rate of the layered injection of above 95%. The producing degree of waterflooding was enhanced by 2% to 3%, and the natural decline rate of production was decreased by 1% to 2%. With the improvement and promotion of this new technology, a large set of data will be obtained to provide the necessary basis and solutions for reservoir dynamic analysis and adjustment of water injection strategy.

关 键 词：超低渗油气藏 数字式分层注水 实时监控 双向无线通讯 数据远程无线传输 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程] TP277[自动化与计算机技术—检测技术与自动化装置]