摘要
涩北气田储层多而薄,气水关系复杂。近年来,气田出水加剧,水气比迅速蹿升,主力气层边水入侵十分严重,且水线推进极不均匀,导致部分气层内部被水分割,气田采收率面临重大影响。另外,由于气田出水,造成了气井的产能和产量大幅度下降,还加剧了气田的出砂,稳产形势十分严峻,仅靠对单井的排水采气工艺和堵水治理措施,已不能有效解决涩北气田面临的出水问题。从分析涩北气田整体治水的必要性、地质条件可行性出发,探讨了涩北气田整体治水的可行性,提出了"内控外排、高控低排、整单结合、排堵结合、水砂同治"的整体治水思路,其目的是结合气藏地质描述、气藏工程、排水采气、堵水等技术手段,从气田层面进行调整,使得边水均匀推进,有效阻止边水突进对气田内部区域的进一步伤害,最大限度解决气田产水问题,保障气田的连续、稳定开发。整体治水方案在气田部分层系进行了先导试验,效果良好。
Sebei Gas Field is a thin layer gas reservoir with very complex gas-water relationship. In recent years,the water and gas ratio increases quickly,and the main gas edge water invasion is very serious in the gas field. Its uneven waterline propulsion causes internal segmentation affected water,which results significant impacts on gas recovery. In addition,the gas well production capacity and output dropped sharply,and the sand production increases rapidly. The drainage gas recovery technique alone is not effective to solve the water problem. The article analyzes the necessity and feasibility of geological conditions of water conservancy,discusses the feasibility of the overall water control in Sebei Gas Field and puts forward methods for comprehensive water control. The objective is to effectively prevent further damage of edge water breakthrough to the inner regions of the gas field,and to solve the problem of gas field water production,and to guarantee continuous and stable development of gas field,by combining gas reservoir geological description,reservoir engineering,drainage gas recovery and water plugging technology,from the gas field level adjustment. The comprehensive water control methods have been a pilot test at some formations with good results.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第2期114-120,共7页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油天然气股份有限公司科学研究与技术开发项目(2011E–0309)
关键词
涩北气田
整体治水
排水采气
气举
堵水
Sebei Gas Field
comprehensive control water
drainage gas recovery technique
gas lift
water plugging
