鄂尔多斯盆地WL地区长4+5和长6油层组致密砂岩储层宏观非均质性特征及对油气的控制  

Macro Heterogeneity Characteristics of Tight Sandstone Reservoirs and Its Control on Oil and Gas in Chang 4+5 and Chang 6 Oil Formations in WL area,Ordos Basin

作　　者：程珂璐 张凤奇 闫凤平[3] 武富礼 刘阳 张博[1,2] 谢红兵 CHENG Ke-lu;ZHANG Feng-qi;YAN Feng-ping;WU Fu-li;LIU Yang;ZHANG Bo;XIE Hong-bing(Xi′an Shiyou University,Xi′an 710065,China;Nanniwan Oil Production Plant of Yanchang Oilfield Co.,LTD,Yan′an 716000,China;Beijing Zhongke Xinyu Technology Development Co.,LTD,Beijing 100083,China)

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]西安石油大学陕西省油气成藏地质学重点实验室,陕西西安710065 [3]延长油田股份有限公司南泥湾采油厂,陕西延安716000 [4]北京中科鑫宇科技发展有限公司,北京100083

出　　处：《河北地质大学学报》2022年第3期31-38,共8页Journal of Hebei Geo University

基　　金：国家自然科学基金项目(41502137);陕西省自然科学基础研究计划项目(2017JM4004);陕西省教育厅重点实验室科研计划项目(17JS110)。

摘　　要：WL地区发育致密砂岩储层,非均质性强,其中储层非均质性强弱分布对该盆地致密砂岩油气的运聚及其分布规律等方面起到了重要的控制作用。在岩心资料、储层物性和测井等资料的基础上,通过层内、层间和平面三个方面对WL地区长4+5和长6储层的非均质性进行定量表征,分析了层内非均质性、层间非均质性和平面非均质性的参数对储层非均质性的影响以及对油气的控制作用。结果表明,WL地区长6^(1)油层亚组以层内夹层及分布、层间隔层及分布对非均质性影响最强;长4+5^(2)油层亚组以渗透率差异程度及砂地比和分层系数对非均质性的影响最强,砂体的几何形态和物性的平面变化等对两个油层亚组的非均质性强度的影响相差不大。明确非均质性强弱对研究区的油气勘探工作具有进一步指导作用。Tight sandstone reservoirs are developed in WL area with strong heterogeneity.The distribution of reservoir heterogeneity plays an important role in controlling the migration,accumulation and distribution of tight sandstone oil and gas in the basin.In the core data,reservoir physical properties and logging data,on the basis of through layer,interlayer and plane in three aspects of WL area of Chang 4+5 and Chang 6 reservoir heterogeneity quantitatively characterized,analyzed the intraformational heterogeneity,interlayer heterogeneity and plane heterogeneity of the influence of parameters on the reservoir heterogeneity and the control effect of oil and gas.The results show that the intraformational and its distribution within and between layers have the strongest influence on heterogeneity of Chang 61 oil reservoir in WL area.The influence of permeability difference,sand-ground ratio and stratification coefficient on heterogeneity is the strongest in Chang 4+52 oil reservoir subgroup,and the influence of geometric shape of sand body and plane change of physical property on heterogeneity intensity is not different between the two oil reservoir subgroups.To clarify the heterogeneity of the study area has a further guiding role in oil and gas exploration.

关 键 词：鄂尔多斯盆地 层内非均质性 层间非均质性 平面非均质性 致密砂岩 

分 类 号：TE122[石油与天然气工程—油气勘探]