CAJ | 학술논문

研究鄂尔多斯盆地乌审召地区上古生界主要含气层位上二叠统山1、盒8段储层成岩作用及孔隙演化认为,该区成岩演化阶段主要处于晚成岩的B期至C期,储层受压实作用和胶结作用影响,而重结晶作用及溶解作用在一定程度上了改善了储层的物性.该区东部和西部埋藏条件差异大,孔隙演化特征有较大区别;西部岩屑砂岩、岩屑石英砂岩、石英砂岩原始孔隙度均值为 33.5%、34.2%和 35.0%,经过早成岩 A 至晚成岩 B-C期后,孔隙度均值为9.8%、10.5%和9.3%;东部岩屑砂岩、岩屑石英砂岩的原始孔隙度均值为34.2%和33.7%,演化至今分别为9.7%和9.4%.
연구악이다사분지오심소지구상고생계주요함기층위상이첩통산1、합8단저층성암작용급공극연화인위,해구성암연화계단주요처우만성암적B기지C기,저층수압실작용화효결작용영향,이중결정작용급용해작용재일정정도상료개선료저층적물성.해구동부화서부매장조건차이대,공극연화특정유교대구별;서부암설사암、암설석영사암、석영사암원시공극도균치위 33.5%、34.2%화 35.0%,경과조성암 A 지만성암 B-C기후,공극도균치위9.8%、10.5%화9.3%;동부암설사암、암설석영사암적원시공극도균치위34.2%화33.7%,연화지금분별위9.7%화9.4%.
Study of the diagenesis and pore evolution of the H-8 and Shan-1 reservoir of the Upper Paleozoic indicates that the main diagenesis in the Uxin Ju region, Ordos Basin experienced a diagenetic evolution from early diagenetic B phase to later diagenetic phase C period. The pore evolution between the east and the west are obviously different. The primary porosities of lithic sandstone, lithic quartz sandstone and quartz sandstone in the west are 33.5%, 34.2% and 35.0%, respectively. At present, their mean values are 9.8%,10.5% and 9.3%, respectively. The primary porosities of lithic sandstone and lithic quartz sandstone in the east are 34.3% and 33.6%, respectively. The present mean values are 9.8% and 9.3%, respectively.