鄂尔多斯盆地南部旬邑-宜君地区中生界储层特征

CHARACTERISTICS OF THE MESOZOIC RESERVOIR BED IN ORDOS BASIN SOUTH XUN YI-YIJUN AREA

对鄂尔多斯盆地南部旬邑 -宜君地区中生界主要储集层——直罗组、延安组、延长组储层特征从沉积相、砂体纵向展布、岩性和物性等几方面进行了简要论述。通过研究指出本区储层具有低孔、低渗的特点。在纵向上以直罗组储层相对最好 ,延安组次之 ,之后才是三叠系延长组。储集层普遍具有岩性细、成岩后生变化强烈的特点。由于储层低孔、低渗 ,因此 。

Main reservoir bed in ORDOS basin southZhiluozu Yananzu Yanchangzu is studied in aspects of sedimentary deposit stone rock spread in vertically rock characteristics porosity and permea-bility. It is shown that porosity and permeability are lower, In vertical, Zhiluozu is the best relatively, Yananzu is the second, Yanchangzu is the third. Reservoir bed normally are finegrained rock. Diagenesis is intense. As porosity and permeability is lower, it is necessary that oil bed is remolded.