吐哈盆地特低孔低渗油气层测井解释方法研究

Logging Interpreting Method Used for Extra-low Permeability Reservoirs in Tuha Basin

吐哈盆地丘东、小草湖等地区侏罗系特低孔、低渗储层,孔隙结构复杂,相同孔隙度储层渗透性差异较大,储层、干层界限难以确定。在岩石物理特征研究基础上,开展了储层分类研究,探讨了储层孔隙结构复杂的岩性成因,针对不同成因分别进行了储层参数建模,并初步建立了储层分类标准。研究成果可满足油气层精细解释的需要,现场地质应用效果明显。

In Qiudong and Xiaocaohu Areas of Tuha Basin, pore structure is complex, permeability was highly different in the reservoirs with same porosities, reservoirs and dry layers were hard to be determined in Jurassic extra-low porosity and permeability reservoirs. On the basis of petrophysical characteristic study.reservoirs were classified. The lithologic genesis of reservoirs with complex pore structures was discussed. The reservoir parameters were simulated in combination with different geneses. The reservoir classification criterion was primarily established. The result can meet the demands precision reservoir interpretation, thus field application result is obvious.