基于电阻率测井的溶解气驱油藏产能预测方法  

A Productivity Prediction Method of Solution Gas Drive Reservoir Based on Resistivity Logging

作　　者：弓浩浩 宋俊德[1] 梁兰[2] 代晓旭[1] 冯 高飞龙[1] Gong Haohao;Song Junde;Liang Lan;Dai Xiaoxu;Feng Yan;Gao Feilong(Qilicun Oil Production Plant,Yanchang Petroleum(Group)Co.,Ltd.,Yan'an,Shaanxi 717100,China;The Engineering Company with Underground Work,Yanchang Oilfield Ltd.,Yanan Shaanxi 716001,China)

机构地区：[1]延长油田股份有限公司七里村采油厂,陕西延安717100 [2]延长油田股份有限公司井下作业工程公司,陕西延安716001

出　　处：《非常规油气》2017年第6期75-79,39,共6页Unconventional Oil & Gas

摘　　要：延长油田七里村油区为弹性—溶解气驱油藏,储层致密、特低渗—低孔、垂向连通性极差,常规水力加砂压裂多数只形成一层水平缝,为压裂段的选取和产能预测带来了很大困难。由于地层中溶解气的不断析出将导致不同探测深度的电阻率曲线值发生明显变化,因此基于目前现有的测井资料,重点从油藏的三组电阻率曲线响应出发,利用已压试油数据总结出了压裂段的选取依据,并建立了产能与不同电阻率曲线值的关系式。经过优选确定了浅侧向电阻率和深感应电阻率组合的产能预测方法,将其应用于油井的产能预测取得较好的效果,为今后油区压裂段的选取和产能预测提供了一种较为实用的方法。The reservoir in oil region of Qilicun oil production plant of Yanchang oilfield has several characters whichare elastic-solution gas drive,tight,low permeability and porosity,short of vertical connectivity.Under these circumstances>the conventional hydraulic fracturing with sand can usually form only one layer of horizontal fractures.It brings a big difficulty of fracturing segment selecting and productivity forecast.Based on current conventional logging data,as the dissolved gas in the formation of precipitation will lead to different detection depth of the resistivity curve value of the significant changes,focusing on the response of three sets of resistivity curves from the dissolved gas drive reservoir.According to the fractured wells data of oil production test,the basis for selecting fracturing segment was g o t,and the relationship between productivity and the curve of different resistivity was established,and the production forecasting method of combination of shallow lateral resistivity and deep induction resistivity was optimized.Using the formula into the well productivity prediction,which achieved better results and provided a practical method to select the fracturing segment and predict the productivity in future.

关 键 词：溶解气驱油藏 测井曲线 电阻高侵 压裂选段 产能预测 

分 类 号：TE328[石油与天然气工程—油气田开发工程]