Evaluation Of The Kepingtag Formation Petroleum Zone In The Central Uplift Zone Of The Tarim Basin

The central uplift belt is located in the central area of the Tarim Basin,across the Bachu uplift,Mengaiti slope,Katake Uplift,Guchengxu uplift,Shuntuoguole uplift,tanggubazi depression,Awati fault depression basin 7 first-order tectonic units,the KEPINGTAGE group show of oil and gas,oil and gas shows 30 wells and the capacity is good,that the central uplift belt of KEPINGTAGE formation has good exploration prospects.In order to deepen the accumulation of oil and gas,starting from combing the forming conditions,through the study of petroleum system and the results of previous studies,using basin modeling to restore the ancient tectonic map T70-T50 period,to determine the petroleum system boundary,using the boundary line,the petroleum system structure boundary,lithologic boundary and fault boundary division of KEPINGTAGE formation the upper 13 zone,KEPINGTAGE formation has 6 zones.Through the comparison of parameters and the comparison of reservoir forming conditions,the evaluation model of zone evaluation is established and the evaluation criteria are established based on the evaluation of the eastern zone and 20 parameters.We established geological evaluation method by using mathematical method such as com prehensive expert evaluating method and gray relational degree method to determine paramet ers of two weights to hydrocarbon source rock condition and trap as the main control factors.We think that in upper stata of keping Tower grid group,Kathak uplift East,Shuntuo low con vex and the Kathak uplift Western are rich in oil and gas area,cause these area are near to full GAL hydrocarbon source rock,storage layer type and storage set space development,oil and gas shipped move channel grooming layer are clear.The lower strata of keping Tower grid gro up such as Shuntuo low convex East and Shuntuo low convex Western are rich in oil and gas area,cause these area are near to full GAL,hydrocarbon source rock,distance hydrocarbon so urce rock more near,storage layer type and storage set space development,oil and gas shippe d moved channel development grooming layer are clear.The ultimate combination of resources and economic evaluation of the oil and gas zone with comprehensive evaluation,that under the favorable zones for Ke sunthor belt in eastern Awati depression,west low convex,the upper is Ke Katake Uplift,East sunthor low convex and Shun South Slope zone.The above belt has favorable geological conditions,large resource scale,high success rate of exploration wells,low exploration cost and obvious economic value.Optimization of Katake Uplift in 21 well block,11 block Katake Uplift in Tazhong Low Uplift,Shuntuoguole Shun South West 2-block 3 and Shuntuoguole low uplift along the 901 block,can be used as the key areas for next exploration zone.