摘要
靖边气田是风化壳型碳酸盐岩气藏,目前处于开发中期,保持气田稳产是靖边气田面临的核心问题,而低效储量是靖边气田储量接替的重要领域。在低效储量分布特征的基础上,将靖边气田低效储量分布分为3种类型:低效储量与优质储量垂向叠加型;低效储量与优质储量侧向连通型;低效储量孤立分布型。研究结果表明,孤立型低效储量规模小,垂向叠加型和侧向连通型低效储量是靖边气田储量接替的重要类型。针对垂向叠加型和侧向连通型低效储量分布特征,采用数值模拟方法对低效储量可动用性进行分析和评价。研究结果表明,低效储层渗透率、低效储层布井方式(井距)、低效储层气井配产是影响低效储量动用程度的最主要因素。
The Jingbian gas field is a carbonate weathering crust gas reservoir in the middle development stage. A core issue that the Jingbian gas field encounters is to maintain the stable production. The low-quality reserves are of importance for future reserve succession in Jingbian gas field. According to the distribution characteristics, the low-quality reserves in Jingbian gas field were divided into three types, i. e. , the vertically stacked, laterally connected and separately distributed reserves of low- and high- quality. Of these, the separately distributed reserves of low quality were found in a small scale, whereas those vertically stacked and laterally connected reserves of low quality were considered to be the major types for reserve succession. Accordingly. a numerical simulation method was employed to evaluate and analyze the recoverability of the vertically stacked and laterally connected low-quality reserves. Results indicated that the permeability, well distribution pattern （well spacing） and gas-well production allocation were the most important factors that influenced the recovery rate of low-quality reserves.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2012年第A02期160-165,共6页
Acta Petrolei Sinica
基金
中国石油天然气股份有限公司重大科技专项(2008E-0708)
中国石油天然气股份有限公司科技项目(2011B-1503)资助
关键词
碳酸盐岩气藏
储量接替
低效储量
分布特征
可动用性分析
靖边气田
carbonate gas reservoir
reserve replacement
low-quality reserves
distribution characteristics
reserves recoverability analysis
Jingbian gas field
