普光气田酸化控水一体化装置研制及现场试验  

Development and On-Site Application of Integrated Device for Acidification and Water Control in Puguang Gas Field

作　　者：李晓益 赵旭 周朝 陈勇光[2] 李顺林[2] LI Xiaoyi;ZHAO Xu;ZHOU Chao;CHEN Yongguang;LI Shunlin(Sinopec Research Institute of Petroleum Engineering Co.,Ltd.,Beijing,102206,China;Sinopec Zhongyuan Oilfield Company,Puyang,Henan,457001,China)

机构地区：[1]中石化石油工程技术研究院有限公司,北京102206 [2]中国石化中原油田分公司,河南濮阳457001

出　　处：《石油钻探技术》2025年第2期143-150,共8页Petroleum Drilling Techniques

基　　金：中国石化科技攻关项目“酸性含水气藏控水完井关键工具研制与应用研究”(编号:P20074-5)资助。

摘　　要：普光气田边部区块存在储层物性较差、具有边底水、完井后无法作业等问题。为解决这些问题,研制了一种酸化控水一体化装置,通过室内试验验证了该装置的性能及开启功能。室内试验表明,该装置的抗拉强度、抗压强度及单向注入阀抗外压密封性能满足入井试验要求。为使1~5 m^(3)/min排量下产生的节流压差满足小于5 MPa的要求,建议单向注入阀当量直径为11.0~12.0 mm,总当量直径大于36.0 mm。该装置在普光气田高含硫气井L−X井开展了现场试验,一次入井成功,该井日产气量高达66×10^(4) m^(3),生产1.6年累计产气量2.8×10^(8) m^(3),液气比低至1.7×10^(-5) m^(3)/m^(3)。现场试验表明,采用该装置,一套管柱可解决既需要酸化又需要控水且两种工艺排量差异巨大的问题,在抑制边底水快速锥进、增加单井控制区域采出程度方面表现出积极作用,为需要酸化且后期无法作业的边底水油气藏提供了控水增产的工具及手段。There are some problems such as poor reservoir physical property,edge and bottom water,and inability to operate after well completion in the border blocks of Puguang Gas Field.To address these issues,an integrated device for acidification and water control was designed,and laboratory experiments were carried out to verify the performance and opening function of the device.The results show that the tensile strength,compressive strength,and sealing performance of the check injection valve of the device meet the requirements of the well test.In order to make throttling pressure drop less than 5 MPa when the flow rate is 1-5 m^(3)/min,it is recommended that the equivalent diameter of the check injection valve should be controlled within 11.0-12.0 mm,and the total equivalent diameter is more than 36 mm.The device has been successfully tested in a gas well with a high sulfur content(Well L−X)of Puguang Gas Field,assisting the well to produce gas up to 66×10^(4) m^(3),and the cumulative gas production reaches 2.8×10^(8) m^(3) in 1.6 years,with a low liquid gas ratio of 1.7×10^(-5) m^(3)/m^(3).Field application shows that the integrated device can meet the dual needs of acidification and water control with a set of completion strings,even though the flow rate of corresponding technologies for dual needs is significantly different.It exhibits a positive role in inhibiting the rapid coning of edge and bottom water and increasing the production degree of a single well control area,providing a tool and means to water control and production increase for edge and bottom water reservoirs that need acidification and cannot be operated later.

关 键 词：酸化 控水稳气 装置 节流压差 普光气田 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]