������������ʯ̿ϵ����ˮ��Ķ�̬��ʶ

龙门气田位于大天池构造带中段断下盘，其石炭系气藏探明储量183.99×108m3,气藏生产井6口，日产能151×104m3，年产能5×108m3。《龙门气田石炭系气藏初步开发方案》认为，气藏存在边水，且气水界面海拔－4420m。1997年12月7日气藏投入试采，动态资料表明6口气井彼此相互连通为同一压力系统。以构造鞍部相连的任市高点与龙门高点气区相互连通为同一压力系统。气藏存在两个独立水体，天东9井附近存在一个有限水体和气藏较大范围内的边水。气水同产的天东9井多次加大气量提水的生产管理方式在川东气田开发史上属于首例。位于构造北端的水井动态资料表明与气区可能不连通。生产动态表明气藏的气水界面比原气水界面低50m左右。试采对气藏水体的认识与气藏初步开发方案的结论有较大差异。文章结合气藏大量生产动态资料，对水体进行分析研究，为正在进行的气藏开发方案的编制提供依据。

Performance Recognition of the Water Body in Carboniferous Gas Reservoir ,Longmeng Gas Field,East Sichuan

??Longmeng gas field is located in the footwall at the middle section of Datianchi structural belt.The proven reserves of Carboniferous gas reservoir are 183.99×10⁸m³.There are six producing wells drilled in the gas reservoir,having a daily productivity of 151×10⁴m³ and a yearly productivity of 5×10⁸m³.The "preliminary development plan for the Carboniferous gas reservoir in Longmeng gas field" indicates that there exists edge water in the reservoir and the gas-water interface is -4 420 m.The gas reservoir was put into production on December 7,1997 and the performance data show that the six gas wells are interconnected and belong to a same pressure system.The Renshi and Longmeng structural highs joined up with the structural saddle are interconnected into a same pressure system.In the gas reservoir,there exist two independent water bodies:a limited water body in the vicinity of well Tiandong-9 and the large-scale edge water in the gas reservoir.The management mode of repeately raising the gas output of the water-cut gas well Tiandong-9 to bring water is the first example in the gas field development history in east Sichuan.The performance data from the water well located in the north end of the structure show that the water well may be not connected with the gas-bearing zone.The production behavior shows that the gas-water interface of the reservoir is about 50 m lower than original one.There is greater difference between the knowledge of the gas reservoir water body in the prodcing test and the conclusion of the preliminary gas reservoir development plan.In this paper,the water body in the reservoir is analyzed and studied on the basis of a great quantity of the production performance data,providing a basis for the gas reservoir develpoment plan under work.