摘要
川西坳陷高庙子地区沙溪庙组是典型的低渗致密砂岩气藏,该研究区地质条件复杂,储量难动用,采速低,稳产差,面临提高综合开采效益困难等问题。主要对研究区气藏动态特征进行综合研究,为研究区气藏高效开发提供建设性意见。首先建立了生产井类型划分标准,将生产井类型划分为4大类,即高效井、中高效井、中效井及低效井。结合研究区生产井采气曲线、产量递减曲线等,分井组、区块对研究区气藏动态特征进行了分析,探讨研究区气藏产量递减、含水等现象,解释不同现象的主控因素,并结合地质特征和地层能量分析等,对研究区气藏开发的动态特征进行全面综合分析。基于上述分析,对研究区气藏可采储量进行了预测,对其生产潜力进行了评价,并针对生产开发过程中存在的问题,提出相应的解决对策,为研究区下一步地高效开发提供方向及思路。
The Shaximiao Formation in the Gaomiaozi area of tlie Western Sichuan Depression is the typical low permeability and tight sandstone gas reservoir,the geological conditions of the study area are difficult to use,mining speed is very low,stable production is poor. The study area is faced with problems much as improving the comprehensive mining efficiency is very difficult and so on. The dynamic haracteristics of gas reservoirs in the study area is mainly investigated,and provides constructive suggestions for the efficient development of gas reservoirs in the study area. The classification of production wells is established,and the production wells are divided into four categories,namely,high efficiency wells,medium-high efficiency wells,medium wells and inefficient wells. Then,combined with the study area production wells gas production curvs,yield decline curvs,the dynamic characteristics of gas reservoirs in the study area are analyzed by dividing wells and blocks to explore the study area gas reservoir production decline,water and other phenomena,and analyze the main factors of different phenomena. Combined with geological features and stratigraphic energy analysis and so on,the comprehensive analysis of the dynamic characteristics of gas reservoir development in the study area is carried out. Based on the above analysis,the recoverable reserves of gas reservoirs in the study area are predicted and its production potential is evaluated. For the problems of the production in the development process,puting forward the corresponding solutions ,which provides directions and thoughts for the next step to efficient development of ersearch area.
作者
张小菊
邓虎成
余瀚泽
伏美燕
张烨毓
欧浩淼
ZHANG Xiao-ju;DENG Hu-cheng;YU Han-ze;FU Mei-yan;ZHANG Ye-yu;OU Hao-miao(College of Resources;State Key Lab of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology, Chengdu 610059,China;Engineering Investigation and Design Institute of Sichuan Provincial Coalfield Bureau,Chengdu 610072,China;Guangi Oil Production Plant of Sinopec Southwest Oil and Gas Company4,Guangxi 530000,China)
出处
《科学技术与工程》
北大核心
2018年第12期45-51,共7页
Science Technology and Engineering
基金
中石化西南油气分公司横向委托项目(34450000-15-ZC0607-0005)资助
关键词
川西坳陷
高庙子地区
沙溪庙组
生产井类型
气藏动态特征
Western Sichuan Depression
Gaomiaozi area
Shaximiao Formation
production well
type
dynamic characteristics of gas reservoir
