石油实验地质
石油實驗地質
석유실험지질
EXPERIMENTAL PETROLEUM GEOLOGY
2014年
6期
678-683,691
,共7页
泥页岩储层%灰色关联%储层评价%上古生界%鄂尔多斯盆地
泥頁巖儲層%灰色關聯%儲層評價%上古生界%鄂爾多斯盆地
니혈암저층%회색관련%저층평개%상고생계%악이다사분지
shale gas reservoir%gray correlation%reservoir estimation%Upper Paleozoic%Ordos Basin
评价泥页岩储层的好坏主要考虑泥页岩的含气性与泥页岩后期压裂开发的难易程度。据此，优选了与泥页岩储层优劣紧密相关的6项影响因素，包括有机碳含量、等温吸附气量、成熟度、孔隙度、伊蒙混层及脆性矿物含量。运用灰色关联理论，对鄂尔多斯盆地上古生界泥页岩储层进行了评价，应用储层综合评价指标（REI）可将储层分为3类：Ⅰ类储层，REI≥0．5；Ⅱ类储层，0．33≤REI＜0．5；Ⅲ类储层，0．3≤REI＜0．33。同时参考前人成果和经验数据，提出了该区海陆过渡相泥页岩储层的评价方案，并用图像的方式展示了不同储层的特征。
評價泥頁巖儲層的好壞主要攷慮泥頁巖的含氣性與泥頁巖後期壓裂開髮的難易程度。據此，優選瞭與泥頁巖儲層優劣緊密相關的6項影響因素，包括有機碳含量、等溫吸附氣量、成熟度、孔隙度、伊矇混層及脆性礦物含量。運用灰色關聯理論，對鄂爾多斯盆地上古生界泥頁巖儲層進行瞭評價，應用儲層綜閤評價指標（REI）可將儲層分為3類：Ⅰ類儲層，REI≥0．5；Ⅱ類儲層，0．33≤REI＜0．5；Ⅲ類儲層，0．3≤REI＜0．33。同時參攷前人成果和經驗數據，提齣瞭該區海陸過渡相泥頁巖儲層的評價方案，併用圖像的方式展示瞭不同儲層的特徵。
평개니혈암저층적호배주요고필니혈암적함기성여니혈암후기압렬개발적난역정도。거차，우선료여니혈암저층우렬긴밀상관적6항영향인소，포괄유궤탄함량、등온흡부기량、성숙도、공극도、이몽혼층급취성광물함량。운용회색관련이론，대악이다사분지상고생계니혈암저층진행료평개，응용저층종합평개지표（REI）가장저층분위3류：Ⅰ류저층，REI≥0．5；Ⅱ류저층，0．33≤REI＜0．5；Ⅲ류저층，0．3≤REI＜0．33。동시삼고전인성과화경험수거，제출료해구해륙과도상니혈암저층적평개방안，병용도상적방식전시료불동저층적특정。
In the estimation of shale gas reservoirs, the shale gas content and the difficulty for fracture develop?ment are the main influencing factors. Six critical factors were chosen, including organic carbon content, the amount of adsorbed gas, maturity, porosity, and the content of I/S and brittle mineral. According to the theory of grey correlation grade, the shale reservoirs in the Upper Paleozoic in the Ordos Basin were studied. The reser?voirs were classified into three types based on the Reservoir Estimating Index ( REI) . When REI≥0.5, the reser?voirs belong to typeⅠ. When 0.33≤REI<0.5, the reservoirs belong to typeⅡ. When 0.3≤REI<0.33, the res?ervoirs belong to type Ⅲ. Combined with previous studies, an estimation scheme of transitional facies shale gas reservoirs in the study area was proposed, and the characteristics of different reservoirs were shown with images.
