考虑邻井干扰的页岩气多段压裂水平井数值试井方法  

Numerical Test of Multi-Stage Fractured Horizontal Shale Gas Well with Inter-Well Interference

作　　者：黄灿[1] Huang Can(Sinopec Jianghan Oilfield Company,Wuhan,Hubei 430223,Chin)

机构地区：[1]中国石化江汉油田分公司,湖北武汉430223

出　　处：《特种油气藏》2018年第3期92-96,共5页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"涪陵页岩气开发示范工程"(2016ZX05060)

摘　　要：页岩气田水平井开发过程中,井间干扰现象严重,在考虑邻井影响的条件下准确分析试井资料、认识储层参数至关重要。为此,综合考虑压裂裂缝和SRV区域特征,建立了页岩储层改造后的多重耦合渗流模型,采用PEBI非结构化网格进行网格划分,基于有限体积法进行求解。根据历史生产数据建立有效的页岩气干扰试井评价模型,通过拟合实测资料对模型进行了验证,并运用该模型对2口生产井进行了生产动态预测及分析,结果表明,2口井间井距过大,可在2井间部署1口加密井并在后期投产新井的水力压裂过程中尽量扩展裂缝半长。该研究为页岩气井的产能预测及生产优化提供了理论支持。The inter-well interference is significant during the development of shale gas field with horizontal well.It is necessary to accurately analyze well test data and understanding reservoir properties by considering inter-well interference.The artificial fracture and SRV are taken into consideration to establish a multiple coupling model after shale gas reservoir stimulation.PEBI unstructured grid is used in mesh generation and finite volume method is adopted in the model solution.An effective shale gas interference well test evaluation model is established according to the production history data.This model is verified by fitting with field measured data and the model is used to analyze and predict 2-well production performances.Result shows that the well spacing is too large for the two analyzed wells.An infill well can be deployed between the two analyzed wells and the artificial fracture half-length should be extended as long as possible.This research could provide certain theoretical reference for the productivity prediction and production optimization of shale gas wells.

关 键 词：页岩气 多段压裂水平井 数值试井 多重耦合模型 有限体积法 

分 类 号：TE373[石油与天然气工程—油气田开发工程]