深层岩溶风化壳碳酸盐岩储层敏感性探讨—以GM地区震旦系灯四气藏为例

文章摘要

深层岩溶风化壳碳酸盐岩储层敏感性探讨—以GM地区震旦系灯四气藏为例

Research on the stress sensitivity of carbonate reservoirs in deep karst weathering crust --Take the Sinian Dengying-4 gas reservoir in GM area as an example

投稿时间：2018-06-12 修订日期：2018-06-12

DOI：

中文关键词: 高温高压应力敏感性渗透率孔隙度

英文关键词: High temperature, High pressure, Stress Sensitivity, Permeability, Porosity

基金项目:国家科技重大专项“四川盆地大型碳酸盐岩气田开发示范工程”(2016ZX05052)、股份公司科技重大专项课题“川中地区灯四气藏规模有效开发关键技术研究与应用”(2016E-0606)。

作者	单位	邮编
陈礼^*	中国石油勘探开发研究院	100083
邓惠	中国石油西南油气田分公司	610051
陈松	中国石油勘探开发研究院	100083
何亚彬	中国石油西南油气田分公司	610051
张皓虔	中国石油西南油气田分公司	610051

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中文摘要:

随着天然气勘探工作的日益深入,近年来在我国发现了大量的高温高压深层大型岩溶风化壳碳酸盐岩气藏,尤其是在四川盆地。为了搞清四川盆地高温高压气藏储层孔隙度和渗透率的压力敏感特性,本文通过GM地区震旦系灯四气藏岩心应力敏感性实验,分析其储层岩心高温高压下的有效覆压与孔隙度及渗透率变化关系。实验结果表明,GM地区震旦系灯四气藏储层渗透率应力敏感中等或中等偏弱,孔隙度应力敏感相对较弱。因此高温高压气藏在开发过程中应适度控制生产压差，以实现该类气藏的高效开发。

英文摘要:

With the deepening of gas exploration, many large karst weathering crust carbonate gas reservoirs with high temperature and pressure have been found in China in recent years, especially in Sichuan basin. In order to understand the stress sensitivity of permeability and porosity of high temperature and high pressure gas reservoir in the Sichuan basin, Based on stress sensitivity experiments of core for Sinian Dengying-4 gas reservoir in GM area, the relationship between the effective overburden of reservoirs and the permeability and porosity with high temperature and high pressure is investigated. The experimental results show that the stress sensitivity of permeability was medium or medium weak, and sensitivity of porosity is weak in Sinian Dengying-4 gas reservoir in GM area．It is necessary to control the producing pressure drop during the development process of gas reservoir with high temperature and high pressure, in order to achieve efficient development of such gas reservoir.

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