摘要
在直井反九点井网的对角油井之间加密水平井,是水驱油藏实现液流改向、提高储量动用效果的有效井网调整方式。基于典型注采井网调整方式,利用渗流力学保角变换和镜像反映原理,建立了井间对角线加密水平井注采井网渗流模型,并提出了评价注采井网储量动用效果的方法;结合实际油田参数,计算分析了不同条件下,直井反九点井网加密调整后注采单元中的储量动用变化规律;综合储量动用效果和开发实施条件,确定了九点井网对角加密水平井的合理水平井长度及合理生产制度。研究结果为水驱油藏注采井网加密调整和注采调控,提供了新的调整思路和分析评价方法。
Infilling horizontal wells between diagonal wells of the inverted nine-spot vertical well pattern is an effective well pattern adjustment method for water drive reservoirs to realize fluid flow diversion and improve the effect of producing reserves.Based on the typical injection-production well pattern adjustment mode,the seepage model of injection-production well pattern with cross-well diagonal infill of horizontal wells is established by using the conformal transformation and mirror reflection theory of seepage mechanics,and the method to evaluate the effect of producing reserves in injection-production well pattern is proposed;Combined with the actual oilfield parameters,the producing reserve change law of an injection-production unit is calculated and analyzed after infill adjustment of inverted nine-spot vertical well pattern under different conditions;The reasonable length of a horizontal well and reasonable production well proration of a diagonal infill horizontal well in inverted nine-point well pattern are determined based on the effect of producing reserves and the production conditions.The research results provide new adjustment ideas and new evaluation methods for infill adjustment of injection-production well pattern and injection-production control in water drive reservoirs.
作者
陈民锋
屈丹
秦立峰
付世雄
徐磊
CHEN Minfeng;QU Dan;QIN Lifeng;FU Shixiong;XU Lei(State Key Laboratory of Petroleum Resources and Exploration(China University of Petroleum),Beijing102249,China;School of Petroleum Engineering,China University of Petroleum,Beijing102249,China;Sinopec Jianghan Oilfield Company,Qianjiang,Hubei 433124,China)
出处
《中国海上油气》
CAS
CSCD
北大核心
2021年第4期70-77,共8页
China Offshore Oil and Gas
基金
中海石油(中国)有限公司综合科研项目“渤海双高油田挖潜关键技术研究(编号:YXKY-2018-TJ-04)”部分研究成果。
关键词
水平井
加密调整
保角变换
渗流模型
渗流场分布
调整策略
horizontal well
infill adjustment
conformal transformation
seepage model
seepage field distribution
adjustment strategy
