致密油藏体积压裂水平井产量预测研究  

Prediction on production of volume fractured horizontal well in tight reservoirs

作　　者：林旺 范洪富[1] 王志平[2] 童敏[2] 王少军[2] 刘立峰[2] LIN Wang;FAN Hongfu;WANG Zhiping;TONG Min;WANG Shaojun;LIU Lifeng(School of Energy Resources,China University of Geosciences(Beijing),Beijing City,100083;PetroChina Research Institute of Petroleum Exploration&Development,Beijing City,100083)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石油勘探开发研究院,北京100083

出　　处：《油气地质与采收率》2018年第6期107-113,共7页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"致密油藏有效开发关键技术"(2016ZX05046-003);国家"973"计划"陆相致密油甜点成因机制及精细表征"(2015CB250901)

摘　　要：致密油藏水平井体积压裂后形成不同尺度的孔-缝介质,不同尺度介质中的渗流规律不同,产量预测难度大。为此,在总结前人对不同尺度介质渗流规律认识的基础上,建立致密油藏体积压裂水平井产量预测模型,并用油田实际数据对其准确性进行验证。同时,对致密油藏体积压裂水平井产量的影响因素进行分析,发现不同介质的应力敏感系数对产量的影响程度从大到小依次为次级裂缝应力敏感系数、人工主裂缝应力敏感系数、基质应力敏感系数;高速非线性系数对产量的影响较大,而启动压力梯度对产量的影响较小。Pore-fracture media with different scales are formed after volume fracturing of horizontal wells in tight reservoirs.The flow law of fluid in different scale media is different.It is difficult to predict the production.Based on summary of the previous understanding of the flow law of fluid in different scale media,the production prediction model of the volume fractured horizontal well in the tight reservoir was established,and its accuracy was proved by actual oilfield data.The influencing factors on production of the volume fractured horizontal well in the tight reservoir were analyzed.The stress sensitivity coefficients of different media was sorted based on their influence on production.From great to small,they are stress sensitivity coefficient of the secondary fracture,stress sensitivity coefficient of the main artificial fracture and stress sensitivity coefficient of the matrix.The high-speed nonlinear coefficient has great influence on the production,while the start-up pressure gradient has little influence on the production.

关 键 词：致密油藏 体积压裂 产量预测 应力敏感 启动压力梯度 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]