气井精细排采智能管理系统的研发与应用  

Development and application of intelligent management system for fine drainage gas recovery

作　　者：胡航 魏伟 唐兴波 陈智勇 朱英杰 刘浩琦 余致理 李鲲 刘伏俊 曾嗣清 郑天力 HU Hang;WEI Wei;TANG Xingbo;CHEN Zhiyong;ZHU Yingjie;LIU Haoqi;YU Zhili;LI Kun;LIU Fujun;ZENG Siqing;ZHENG Tianli(Chongqing Gas District,PetroChina Southwest Oil&Gasfield Company,Chongqing 400707,China)

机构地区：[1]中国石油西南油气田公司重庆气矿,重庆400707

出　　处：《天然气勘探与开发》2024年第6期70-79,共10页Natural Gas Exploration and Development

基　　金：中国石油天然气集团有限公司重大现场试验项目(编号:2023ZZ21)。

摘　　要：中国石油西南油气田公司重庆气矿所辖气田多处于开发生产后期,产水气井占比大,尤其是在“大中心站”管理模式和“油公司”改革模式下,依靠单一常规泡排(泡沫排水采气)和人工间歇开关井的生产方式,已无法满足气井精细排采的需求,老井精细管理面临巨大挑战。为此,通过开展井筒压力损失最小化及智能管理相关研究,依托现有物联网基础,研发了一套智能管理系统,集成“智能泡排+智能针阀+泡排大数据分析”的功能,实现低压低产泡排井稳定带液生产,间歇生产井采气时率最大化,充分发挥气井产能。研究及应用结果表明:(1)该系统能够根据气井实时生产数据进行智能分析和决策,合理确定开井、关井时机。(2)结合井筒压力损失和井筒积液量计算,该系统能够智能推送起泡剂加注量与加注时机,并自主调整针阀开度及优化井筒流态,提升低压产水气井的携液能力,实现气井“三稳定”(井口压力、日产气量和水气比三项指标的相对稳定)生产。(3)该系统在五百梯气田天东11井现场获得成功应用,降本增效显著。气井精细排采智能管理系统的研发与应用,为老井挖潜增产开辟了新的技术途径。Most of the gas fields under the jurisdiction of Chongqing Gas District of PetroChina Southwest Oil and Gasfield Company are in production tail,with water producing gas wells occupying a large proportion.Especially,under the management modes of“large central station”and“oil company”,the demands for fine drainage gas recovery cannot be met only relying on single conventional foam drainage gas recovery and manual intermittent well startup/shut-in,facing great challenges of fine management of old wells.Therefore,based on the researches on minimization of borehole pressure loss and intelligent management,depending on the existing Internet of Things,an intelligent management system has been developed,which integrates the functions of intelligent foam drainage gas recovery,intelligent needle valve,and Big Data analysis of foam drainage gas recovery,and can realize stable liquid-carrying production of low-pressure and low-yield gas wells with foam drainage gas recovery,and maximize the uptime rate of intermittent gas production,to obtain sufficient productivity.The research and application results show that,(i)the system can intelligently analyze and make decisions based on real-time production data of gas wells,so as to reasonably determine the timing of well startup/shut-in;(ii)according to the calculations of borehole pressure loss and liquid loading,the system can intelligently push the injection volume and timing of foam agent,autonomously adjust the needle valve opening and optimize the wellbore flow state,enhance the liquid carrying capability of low-pressure water-producing gas wells,and achieve“three-stable”(relatively stable wellhead pressure,daily gas production,and water-gas ratio)production;and(iii)the system has been successfully applied in Well Tiandong 11 of the Wubaiti gasfield,achieving the significant cost reduction and efficiency improvement.The development and application of this intelligent management system have filled the gap of production technology in the region,and opened up a new

关 键 词：产水气井 老井挖潜 智能泡排 智能针阀 精细排采 智能管理 

分 类 号：TE375[石油与天然气工程—油气田开发工程]