摘要
呼图壁气田是存在边底水的贫凝析气藏,目前开发进入稳产后期,部分气井开始见水,但地层水的分布及规模尚不清楚,这对气田的持续开发不利。通过背斜构造、断层和储集层非均质性等地质因素对地层水的分布进行了分析,对水侵特征进行了总结,认为气藏水侵具有差异性,各气井见水具一定的时间和空间顺序,水体总体由西向东向气区范围推进。结合各气井的水侵特征,将气藏水侵分为边水横侵型、底水锥进型、底水纵窜型和边底水横侵型等4种主要模式。
Hutubi gas field in Junggar basin is a lean condensate gas reservoir with edge and bottom water.At present,its development has entered into the late stage of stable production period and water breakthrough occurred in a part of gas wells.However,distribution and scale of the formation water are not clear,which is unhelpful for sustainable production of this gas field.Through analysis of the influences of anticline structure,faults and reservoir heterogeneity on distribution of the formation water,the watered-out feature in this reservoir is summarized in this paper.It is suggested that the watered-out feature in a gas field is of differentiation.The water breakthrough in each gas well is of a certain of time and space order,and the water body in it moves toward gas-bearing zones from west to east as a whole.Also,combined with the watered-out features of each gas well,the water invasion of this gas reservoir can be divided into such four patterns as edge water and lateral invading one,bottom water and coning one,bottom water and vertical channeling one and edge-bottom water and lateral invading one.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2012年第4期479-480,共2页
Xinjiang Petroleum Geology
关键词
呼图壁气田
地层水分布
水侵模式
边底水
Hutubi gas field
formation water distribution
water invasion pattern
edge-bottom water
