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The Study On Sedimentary Facies And Reservoir Evaluation Of Chang6Member In Shi Jia Pan Area

Posted on:2014-03-31Degree:MasterType:Thesis
Country:ChinaCandidate:H Y ZhangFull Text:PDF
GTID:2250330425482899Subject:Oil and gas field development project
Abstract/Summary:PDF Full Text Request
Based on logging data, the core analysis test data and various experimental data of targetarea, the paper firstly finishes small layer division and correlation of Chang6in Shi Jiapan area,and studies the formation and development of structural traps, secondly analyses on thecharacteristics of the sedimentary, petrology, pore structure, physical property, four properties’relations and heterogeneity of Chang6reservoir. Thirdly, evaluates the target reservoir viamultifactorial comprehensive evaluation method, establishes a reservoir classification evaluationstandard, and divides into small layers of reservoir evaluation. Finnally, under the guidance oflaw, gives accumulation model and hydrocarbon enrichment regularity of Chang6in Shi Jiapanarea.The study shows that: Chang6reservoir strata thickness is130m, which can be subdividedinto Chang61, Chang62, Chang63and Chang64. Because there are large area of swamp faciesin central research area, the study area is divided into east and west part. The delta plain depositdominates the target formation that can be divided into distributary channel, interdistributary bayand flood plain. The main reservoir rock type is feldspar sandstone and feldspar-debrissandstonewith the characteristics of fine particle size, intergranular pore, dissolution pore and small-poresmall-throat in Chang6reservoir sandstone. The study area is ultralow permeability reservoir,and dominates the characteristics of low porosity and strong heterogeneity. Throughmultifactorial comprehensive evaluation method, Chang6Formation is divided into four types,Type Ⅲ dominates the target formation, and the next is Type Ⅱ; the main reservoir type ofChang6reservoir is structural-lithologic reservoir, the next is structural reservoir. On theBackground of west dipping, forms the nose-uplift structure, and the reservoir is laterallyscreened by mud which is deposited by interdistributary bay, forming a good trap is a majorhydrocarbon enrichment area.
Keywords/Search Tags:Chang6Reservoir, Sedimentary facies, Reservoir characteristics, Reservoirclassification evaluation, Hydrocarbon enrichment regulation
PDF Full Text Request
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