双重介质定量描述技术在复杂礁灰岩油田开发中的应用——以珠江口盆地流花4-1油田为例  

The application of the technique of quantitatively characterizing double-porosity medium in the development of complex reef-limestone oilfields: a case of LH4-1 oilfield,Pearl River Mouth basin

作　　者：刘伟新 宁玉萍 王华 程佳 陆嫣 汪莹 

机构地区：[1]中海石油(中国)有限公司深圳分公司

出　　处：《中国海上油气》2014年第3期65-71,共7页China Offshore Oil and Gas

摘　　要：裂缝作为礁灰岩储层的主要流体渗流通道,其空间展布规律对油田开发有着重要的意义,但如何实现定量描述一直存在技术困难。以珠江口盆地流花4-1礁灰岩油田为例,依托钻井、取心、测井、GVR成像及地震等资料,利用沉积演化模拟和离散裂缝网络建模,探索对复杂礁灰岩油田储层和裂缝空间展布规律的定量表征技术,建立了该油田裂缝-孔隙型双重介质模型,开展了基于双重介质模型的油藏数值模拟研究,并在充分考虑裂缝影响下分析了复杂礁灰岩油田开发过程中的影响因素,进而立体评价了剩余油分布情况,为该油田开发后期调整挖潜提供了依据。As a main type of fluid-flow channel in reef-limestone reservoirs,fractures and their distribution are very important to the development of such oil reservoirs,but it has been technically difficult to quantitatively describe fractures.Taking LH 4 1 oilfield,Pearl River Mouth basin as an example,a technique to quantitatively characterize the spatial distribution of complex reef-limestone reservoirs and their fractures was explored,and a model of double porosity medium was built on basis of drilling,core,logging,GVR image and seismic data and by using the sedimentary evolution and discrete fracture network modeling.Then based on this model,a research of numerical simulation was made for the oil reservoirs,and the factors influencing the development of complex reeflimestone oilfields were analyzed by sufficiently considering the impacts of fractures.Furthermore,the remaining oil distribution was spatially evaluated,providing some evidences for the adjustment in the late development of the oilfield.

关 键 词：礁灰岩油田 裂缝-孔隙双重介质 建模与数模 沉积演化模拟 离散裂缝网络 剩余油分布 

分 类 号：TE349[石油与天然气工程—油气田开发工程]