现代地质Issue(1)：138-144,7.
火山岩压敏性的定量综合评价及其对气井产能影响
Quantitative Comprehensive Evaluation on Stress-sensibility of Volcanic Rocks and Its Influence on Gas Well Productivity
摘要
Abstract
Previous evaluations on stress-sensitivity of volcanic rocks are limited to qualitative analysis,and the influence factors of the stress-sensitivity are not comprehensive.Basing on the results of stress-sensitivity experi-ment on volcanic rocks and the theory of stress-deformation,this paper has established a relatively comprehen-sive quantitative evaluation method.This paper has analyzed the factors that affect the stress-sensitivity of vol-canic rocks,finding that fracture development situation and pore structure are the key factors.The result of stress-sensitivity experiments is highly consistent with the result of quantitative comprehensive evaluation on stress-sensitivity of volcanic rocks with the 0. 94 of linear fitting R2 ,verifying the high reliability of this evalua-tion method.All the influence factors of stress-sensitivity are fracture type,fracture filling situation,permeabili-ty,the ratio of porosity to permeability,fracture number,fracture width,porosity,clay mineral content and depth in descending order.In addition,the volcanic gas well productivity equation with stress-sensitivity is es-tablished,which can forecast gas well productivity with stress-sensitivity under different reservoir pressure.And the analysis result of the effect of stress-sensitivity on gas well productivity shows that the stronger the stress-sen-sitivity is,the more the gas well productivity losses under the same condition.关键词
火山岩/渗透率/压敏效应/定量分析/综合评价/产能损失Key words
volcanic rock/permeability/stress-sensitivity/quantitative analysis/comprehensive evaluation/productivity loss分类
能源科技引用本文复制引用
田青,刘鹏程..火山岩压敏性的定量综合评价及其对气井产能影响[J].现代地质,2015,(1):138-144,7.基金项目
中央高校基本科研业务费专项资金（2652013094）；国家科技重大专项“高压气藏高效安全开发技术研究”（2011 ZX05015－002）。 （）
