姜家川区块长8油藏注采井网研究  

The Injection-Production Well Pattern Research of Chang-8 Reservoir in Jiangjiachuan Block

作　　者：刘姣 王成龙 时圣彪 Liu Jiao;Wang Chenglong;Shi Shengbiao(Zhidan Oil Production in Yanchang Oilfield Co., Ltd., Yan'an, Shaanxi 717500, China)

机构地区：[1]延长油田股份有限公司志丹采油厂,陕西延安717500

出　　处：《非常规油气》2020年第5期108-112,共5页Unconventional Oil & Gas

摘　　要：针对姜家川区块长8油藏的地质特征,在调研国内外超低渗透储层特征和注采井网研究的基础上,运用油藏工程方法和开发经验法,利用数值模拟优化研究得到如下认识建议采用菱形反九点注采井网,井排方向为北东80°,开发中后期可以将角井转注,并调整为矩形五点井网以提高注水强度。长8合理的井网密度为15.1~20.5口/km2,合理的井距范围是400~500 m,最优值为450 m;合理的排距范围为100~140 m,最优值为120 m。该认识对超低渗透油藏的高效开发具有一定指导意义。Based on the characteristics and injection-production well pattern research of ultra-low permeability reservoirs,taking Chang-8 reservoir of Jiangjiachuan block as the research object,using the reservoir engineering method and the development experience method,using the numerical simulation optimization research,we can obtain the following understanding:The skewed nine-spot pattern(The well drainage direction is north-east 80 degrees)is recommended.During medium to later term of development,so as to improve the injection intensity,we can transfer angle wells to form the five-spot pattern.The reasonable well spacing density of Chang-8 is 15.1~20.5/km2,while the reasonable well spacing range is 400 m to 500 m with the optimal value of 450 m and the reasonable row spacing range is 100 m to 140 m with the optimal value of 120 m.This understanding has certain guiding significance for the efficient development of ultra-low permeability reservoirs.

关 键 词：超低渗透 井网形式 井网密度 井距 排距 

分 类 号：TE348[石油与天然气工程—油气田开发工程]