和田地区上石炭——下二叠统层序地层分析及有利储集层评价

Sequence stratigraphy analysis and favorable reservoir evaluation in upper Carboniferous-lower Permian series of Hetian area.

对塔西南坳陷和田地区石炭—二叠系进行了综合研究 ,将上石炭—下二叠统划分了六个基本层序 (三级 )、15个体系域 ,提高了地层划分精度。通过单剖面层序地层分析 ,完成了有利储集层横向对比及时空展布的研究 ,指出本区与海侵体系域有关的有利储集层主要为第一、四层序的滨海相石英砂岩 ,与高水位体系域有关的储集层主要为第二、五、六层序的碳酸盐岩。在此基础上 。

A synthetic study on Carboniferous?Permian series of Hetian area in southwest Talimu depression is done. Upper Carboniferous?lower Permian may be divided into six basic sequences(three order) and 15 system domains , it makes precision of formation classification improved. Lateral correlation and time?space spread of favorable reservoirs are studied through the analysis of sequence stratigraphy for single profile. It is pointed out that the favorable reservoirs related to transgressive system domain are quartzose sandstones in littoral facies with first and fourth sequence mainly. And the reservoirs related to high water level system domain are carbonate formations in second, fifth and sixth sequence. On the basis of that, the above favorable reservoirs are evaluated comprehensively.