苏里格气田东区山_1、盒_8段储层沉积微相与地质建模  

SEDIMENTARY MICRO-FACIES AND GEOLOGICAL MODELING OF P_1s_1 AND P_2h_8 RESERVOIRS IN THE EAST PART OF SULIGE GAS FIELD,ORDOS BASIN

作　　者：赵勇[1] 李义军[1] 杨仁超[2] 樊爱萍[2] 李浮萍[1] 

机构地区：[1]长庆油田公司苏里格气田研究中心,陕西西安710018 [2]山东科技大学沉积成矿作用与沉积矿产山东省重点实验室,山东青岛266510

出　　处：《矿物岩石》2010年第4期86-94,共9页Mineralogy and Petrology

基　　金：国家"973"项目(2003CB214603)

摘　　要：运用岩心观察、岩性分析、粒度分析、测井分析、储层地质建模等多种方法,对鄂尔多斯盆地苏里格气田东区二叠系石盒子组盒8段和山西组山1段沉积微相和砂体分布规律进行研究认为:①盒8段、山1段发育河流-三角洲沉积体系。盒8段属于辫状河沉积相,发育河道充填、心滩、溢岸和泛滥平原;山1段发育辫状河、辫状三角洲沉积相,沉积微相主要有河道充填、心滩、泛滥平原、分流河道、分流河道间等类型;②从山1段至盒8段,沉积相带向盆地方向大幅迁移,沉积基准面总体呈现小幅上升—大幅下降—逐渐缓慢上升的趋势;③沉积微相展布研究和地质建模结果表明,储集砂体在垂直物源方向连通性较差,顺物源方向较好,与山1段相比,盒8段砂体规模和连通性均较好,是本区最有利的储集体,以此建立的储层地质模型和地质储量计算与实际生产数据符合性很高。Methods of core observation,lithology analysis,grading analysis,logging analysis,geological modeling of reservoirs etc.Were used to study the distribution of sand bodies in the Permian in the east part of Sulige gas field,Ordos basin.Synthetical analyses on provenance,sedimentary micro-facies and distribution law of sand bodies in P1s1 and P2h8 revealed that：① Fluvial-deltas were the main sedimentary system in the Sulige gas field.Sedimentary facies of P2h8 in the interest area belongs to braided river,including channel filling,channel bar,splay and flood plain.Braided river and braided deltas developed in P1s1,containing channel filling,channel bar,flood plain,distributary channel,interdistributary channel.② From P1s1 to P2h8,sedimentary facies belts transferred toward basin,with fluctuation of sedimentary base level from ascending in small scale-descending in large scale-ascending slowly and literally.③ Results of distribution of sedimentary facies and geological modeling showed that the continuity of reservoir sand bodies on flow direction is better than that of cross direction.Sand bodies of P2h8 in larger scale and better continuities ware the best reservoirs in the east part of Sulige gas field,comparing with that of P1s1.④Modeling result showed that geological modeling of the reservoirs and calculated geologic reserve of the gas pool are in accordance with data in practice.

关 键 词：鄂尔多斯盆地 苏里格气田 二叠系 沉积微相 地质建模 

分 类 号：TE121.3[石油与天然气工程—油气勘探]