川口油田长4+5储层特征

Kawaguchi Oilfield Chang 4 + 5 reservoir characteristics

随着近年来科学技术的快速发展,石油开采技术的不断完善,以及国民经济发展对石油的需求越来越多,而随着油田的开采,中、高渗储层基本上都进入了开采的后期,低渗、特低渗储层成为目前油田开采的重点。加大对低渗、特低渗储层的开发并对其挖潜显得越来越重要^([1])。本文对川口油田长4+5储层的储层特征进行了分析,主要取得以下结论:(1)长4+5储层主要由岩屑、石英、以及长石组成,石英质和长石质是本油层的主要胶结物;(2)成岩作用的影响包括溶蚀作用、胶结作用和压实作用;(3)研究区孔隙类型都主要是残余粒间孔,其次是粒内溶孔,剩下的为云母溶缝铸模孔。

With the rapid development of science and technology in recent years, and constantly improve the oil extractiontechnology, and economic development demand for oil is increasing, and with the exploitation of oil fields, the permeability reservoirsare basically entered late Production of special low permeability sandstone reservoirs become the focus of the current oil exploitation.Increase the development of special low permeability sandstone reservoirs and tap the potential of its becoming increasingly important [1].In this paper, Kawaguchi Oilfield Chang 4 ＋ 5 reservoir reservoir characteristics were analyzed, mainly made the following conclusions：（1） Chang 4 ＋ 5 reservoir major detrital quartz and feldspar, quartz and feldspar the cement is the main reservoir; （2） Effect of diagenesisinclude dissolution, cementation and compaction; （3） the study area pore types are mainly residual intergranular pore, intragranulardissolved pores followed, and the rest the mica dissolved fracture mold holes.