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以威远气田震旦系气藏为例，利用锥进模型对裂缝性底水气藏气井水侵动态进行了模拟研究；通过对基质渗透率、裂缝大小及分布、井底隔层、采气速度、气井打开程度和水体大小等多种参数进行敏感性分析，得到沿裂缝水窜是该类气藏的主要水侵特征；并根据气井不同水侵特征归纳出４种主要的水侵模式，即水锥型、纵窜型、横侵型和复合型；分析了各种水侵模式的动态特征和地质基础，为改善裂缝性底水气藏开发效果提供了理论依据；得出的结论与气藏实际符合，可作为有效治理底水气藏水患的理论依据。

A RESEARCH ON WATER INVASTION PERFORMANCE OF THE GAS WELLS IN FRACTURED BOTTOM WATER RESERVOIR

By taking Sinian gas reservoir of Weiyuan field as an example,a numerical simulation research on water invasion performance of the gas wells in fractured bottom water reservoir was carried out by use of the coning model.Through the sensitivity analyses of many parameters as matrix permeability,the size and distribution of fractures,barrier bed at bottomhole,rate of gas production,partial penetration of gas well and size of water body,etc.,it is concluded that the water breakthrough along fractures is the main water invasion property in such kind of gas reservoir.According to various water invasion properties in gas wells,four water invasion patterns,i.e.the water coning,vertical breakthrough,lateral invasion and compound patterns are summarized and the dynamic characteristics and geological bases of various water invasion patterns are analyzed,thus providing theoretical foundation for improving the development effectiveness of the fractured bottom water reservoir.The obtained conclusions are in accordance with the actual situation of the gas reservoir,and can be taken as the basis for effectively controlling the water invasion in the bottom water reservoir.