论文详情

鄂尔多斯盆地鄂7井奥陶系风化壳储层特征与剖面结构

石油实验地质

1994年 16卷第2期

阅读：139

Title

RESERVOIR CHARACTERISTICS OF THE ORDOVICIAN WEATHERING CRUST AND SECTIONAL STRUCTURE IN ORDOS NO.7 WELL, THE ORDOS BASIN

作者

刘长春

Authors

Liu Changchun

单位

地矿部华北石油地质局第三普查勘探大队, 咸阳 712000

Organization

NO. 3 Petroleum Prospecting Party, North China Bureau of Petroleum Ceology

摘要

鄂尔多斯盆地鄂7井奥陶系风化壳划分为3个岩溶带,即垂直岩溶带、水平岩溶带和深部岩溶带。风化壳储层的非均质性主要受岩溶控制,岩溶多孔带是本井风化壳的主要天然气储集层段。在研究各岩溶带特征的基础上,认为本井位于加里东期古岩溶斜坡的较低部位,而以西的鄂5井、鄂8井所在部位,是更具勘探前景的地区。

Abstract

The Ordovician weathering crust in the area of No.7 drill well can be divided intothree karst beIts in the Ordos Basin,namely vertical,horizontal,and deep karst belts,Theinhomogeneity of reservoirs in the weathering crust is dominantly controlled by karstifica-tion and the karst porous belt in the weathering crust is rated as the major reservoir bedsof natural gas,Based on the characteristic study of each karst belt,No.7 drill well is locat-ed in the lower part of the Caledonian palaeo-karstificated slope,toward the west whereOrdos No,5 and No.8 wells are positioned could be more promising prospects for oil/gas.

关键词：

风化壳储层特征; 垂直岩溶带; 水平岩溶带; 深部岩溶带;

基金项目

DOI

https://doi.org/10.11781/sysydz199402137