摘要
我国低渗透气藏产气量在天然气总产量中所占比例越来越大,研究低渗透气藏的形成机理及形成过程是非常必要的。四川盆地上三叠统须家河组二段是重要的含气层位,但由于其储层具有非均质性强、且具低孔低渗的特点,不仅储层预测难度大,而且开发的效果也差。因此需要研究其形成过程,提高储层预测精度以改善开发效果。以储层岩石学特征、孔隙类型及分布特征、胶结物充填次序及充填时间等研究为基础,定时、定量地研究孔隙的整个演化历史,描述了孔隙在不同历史阶段的大小及变化原因,从而再现了储层形成历史,为下一步须二段气藏有效储层的预测与有效开发打下基础。
The proportion of the production of the low permeability gas reservoirs among the whole natural gas production is growing bigger and bigger.Therefore,it is very necessary to study the formation mechanism of low permeability gas reservoirs and the formation process.T3x2 reservoir in the Upper Triassic of the Sichuan Basinisan important gas-bearing layer.However,due to the strong heterogeneity,low porosity and permeability,the reservoirs are difficult to predict and it is also difficult to achieve a good development effect.Therefore,the formation process should be studied to improve the prediction accuracy and development effects of reservoir.On the basis of the research esonreser voirlithology,porosity type and distribution,cementfilling and filling time of the order,the whole evolutionary history of the reservoir is researched timely and quantitatively.The pore size in different historical stages and reasons for their changes are described.The formation history of the reservoir has laid a foundation for the future effective prediction and development of the T3x2 reservoir.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第2期35-42,9,共8页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家自然科学重点基金(41030426)
教育部博士点基金(20095122110002)
四川省博士后引进项目(2011SCBSH-5)
国家科技重大专项(2011ZX05001-05-01)
关键词
须二段储层
低孔低渗储层
孔隙类型
孔隙演化
定量描述
四川盆地
T3x2reservoir
low porosity and low permeability reservoirs
pore type
pore evolution
quantitative description
Sichuan Basin
