论文部分内容阅读
涠西南凹陷涠洲B油田涠二段Ⅳ油组为油田开发的主力油组,通过钻井取心、测井、地震及分析化验等资料的分析研究,确定涠洲B油田W_2Ⅳ油组主要为浅水环境辫状河三角洲前缘沉积,并识别出辫状河道、分支河道、河口坝、远砂坝和分流间湾等沉积微相应用高分辫率层序地层理论,将涠洲8油田W_2Ⅳ油组划分为2个中期半旋回、6个短期半旋回,建立等时地层对比格架,并在格架内进行小层砂体精细对比,选择砂体较为发育的ssc3和ssc6两个短期基准面旋回编制沉积微相平面分布图及砂体展布图,摸清了砂体展布规律,以明确油田开发调整有利方向。
Ⅳ The IV oil group in the second member of the 涠zhou B oil field in the southwest depression is the main oil group developed in the oilfield. Through the analysis of drilling coring, logging, seismic and analytical laboratory data, it is determined that the W 2 Ⅳ oil group in Weizhou Oilfield B is mainly shallow water Environment braided river delta front, and identified the braided channel, branch channel, estuarine dam, far sand dam and shunt bay sedimentary microfacies and other applications of high-rate braided sequence theory of stratigraphic sequence, the Weizhou 8 Oil Field W_2IV oil The group is divided into two medium-term semi-cycles and six short-term semi-cycles to establish the isochronous stratigraphic correlation framework and to finely compare the small sand bodies in the grid. Two short-term reference planes, ssc3 and ssc6, Cyclically compilation of sedimentary microfacies plane distribution map and sand body distribution map, find out the law of sand body distribution in order to clarify the oil field development and adjustment of the favorable direction.