苏里格气田苏东41-33区块储层综合评价研究

Comprehensive Evaluation of Reservoir in Block Sudong 41-33 Block of Sulige Gas Field

苏里格气田苏东41-33区块盒8段、山1段储层砂体比较发育,连通性较好,但有效砂体连通性较差,多层叠加,储层评价难度大。根据沉积相及砂体展布特征分析,对苏东41-33区块储层进行了综合评价和有利目标区预测。研究认为,苏东41-33区块内砂体剖面上呈区域性不连续展布、孤立状或切割分布,南北向较东西向连续性好,平面上呈近南北向条带状展布;苏东41-33区块储层主要为低孔低渗储层,有利(Ⅰ类)储层主要分布于该区块东北部;苏东41-33区块共有8个有利目标区,主要分布于区块东北部、中部和西南部。

The sand bodies of He8 and Shan 1Reservoirs are developed with good connectivity in Block Sudong 41-33 of Sulige Gas Field,but the effective sandstone connectivity is poor,for multilayer superposition,reservoir evaluation is difficult.According to the analysis of sedimentary facies and distribution of sand bodys characteristics,comprehensive evaluation and prediction of favorable targets of Block Sudong 41-33 are carried out.Research shows that the sand bodies in Block Sudong 41-33 are discontinuous distribution,isolated or cutting,connectivity is better in north-south than that in east-west,in the plane sand body is nearly south-north zonal distribution.The Reservoir in Block Sudong 41-33 is Mainly of low porosity and permeability,advantageous reservoir is mainly distributed in the northeast.There are 8favorable targets in Block Sudong 41-33,they are mainly distributed in the central part,the southwest and northeast.