东胜致密低渗产水气藏水平井一点法产能模型研究  

Study on One-Point Productivity Model of Horizontal Well in Dongsheng Tight Low Permeability Water Production Gas Reservoir

作　　者：罗懿 刘瑞 孔浩 王志彬[3] LUO Yi;LIU Rui;KONG Hao;WANG Zhibin(Petroleum Engineering Technology Research Institute,North China Oil and Gas Branch of China Petroleum and Chemical Conporation,Zhengzhou 450006,China;Henan Xinghuo Science and Technology Development Center(Limited Part),Zhengzhou 450006,China;State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中国石油化工股份有限公司华北油气分公司石油工程技术研究院,郑州450006 [2]河南星火科创科技发展中心,郑州450006 [3]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500

出　　处：《重庆科技学院学报（自然科学版）》2024年第2期1-7,共7页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金面上项目“鄂尔多斯盆地南部中生界断缝体油藏开发关键技术”(51974263)。

摘　　要：为进一步提升气藏产能预测的精度,针对东胜气田锦30井区作了水平井产能模型研究。借鉴Giger、Joshi、Borisov、陈元千等人提出的油藏水平井产能公式推导过程,并遵循渗流规律建立了气藏水平井产能公式;基于气相渗透率与含水率的拟合关系分析水气比对气井流入动态曲线的影响规律,发现不同水气比条件下的无因次流入动态曲线重合且为直线,但无阻流量受水气比的影响较大;提出产水气井无因次无阻流量新理念,建立了无因次无阻流量与水气比的关系式,进而在此基础上推导出一点法产能预测模型。In order to further improve the accuracy of gas reservoir productivity prediction,a horizontal well productivity model was studied for the Jin 30 well area of Dongsheng gas field.Based on the derivation process of the productivity equation for oil reservoirs horizontal wells proposed by Giger,Joshi,Borisov,and Chen Yuanqian and a productivity formula for gas reservoir horizontal wells was established following the law of seepage;Based on the fitting relationship between gas permeability and water content,the influence of water to gas ratio on the inflow performance curve of gas wells was analyzed.It was found that the dimentionless inflow dynamic curves under different water to gas ratios overlapped and were straight lines,but the unobstructed flow rate was greatly affected by the water to gas ratio;A new concept of dimensionless and unobstructed flow rate for water and gas wells was proposed,and a relationship between dimensionless and unobstructed flow rate and water to gas ratio was established.Based on this,the one-point productivity prediction model was derived.

关 键 词：东胜气田 致密低渗气藏 水平井 流入动态 一点法产能 水气比 

分 类 号：TE348[石油与天然气工程—油气田开发工程]