Discussion on Evaluation Scheme of Physical Property Boun-dary for Tight Fractured Porous Sandstone
Reservoirs in Kuqa Depression
Abstract: Experienced a strong tectonic stress, the main exploration layers of Cretaceous-Paleogene in thrust belt of Kuqa foreland basinofTarimbasin buried deeply and were very tight. The reservoirs were characteristic of very poor physical property about the matrix but with abundant tectonic fractures. They were tight fractured porous sandstone reservoirs with dual-porosity and dual-permeability. Reservoirs productivity of the studied area were controlled defini- tively by the total stratum permeability and have no obvious relation with the porosity. Unfilled and semi-filled struc- tural fractures are the main contributing factors for the total permeability of the tight reservoirs. Boundaries of stratum permeability for different reservoirs productivity were proposed based on well testing data. Tectonic fractures were evaluated in four types according to their contribution for the stratum permeability. A scheme of evaluation parameters about the tight fractured porous sandstone reservoirs adapting to the natural gas exploration in Kuqa depression was established.
文章引用: 任康绪 , 肖中尧 , 曹少芳 , 袁文芳 , 张荣虎 , 马志远 (2012) 库车坳陷致密裂缝孔隙型砂岩储层评价的物性界限探讨。 地球科学前沿， 2， 187-192. doi: 10.12677/AG.2012.24028
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