Petroleum System Analysis And Resource Assessment Of Chu-Sarysu Basin

The Chu-Sarysu Basin is mostly located in Kazakhstan and extends partially to Kyrgyzstan as an inland basin.This thesis applies theoretical analysis of petroleum-bearing basin analysis and petroleum geology,and takes the analysis of petroleum-bearing systems as a breakthrough to study the basin's basic geological characteristics,petroleum geological characteristics and oil and gas distribution characteristics in the Chu-Sarysu Basin.system and explore the main factors of hydrocarbon accumulation factor,based on the characteristics of the reservoir basin study concluded,based on the characterization of a combination of oil and gas accumulation,evaluate potential oil and gas resources,and anticipate favorable oil and gas exploration zone.The Chu-Sarysu Basin is a low-exploration basin.The natural gas is mainly stored in the Upper Devonian,Lower Carboniferous and Permian.The large-salt related fault trap is an important factor for oil and gas enrichment in the basin.Two gas-bearing systems are developed in the basin: the Upper Devonian / Lower Carboniferous gas-bearing system and the Permian gas-bearing system.The analogy analysis with the surrounding Caspian Basin shows that the two basins have certain similarities and can be used as analogy objects for resource evaluation parameters.In this study,Monte Carlo statistical method was used to estimate the recoverable natural gas resources in the Chu-Sarysu Basin.The evaluation result was 0.735 trillion cubic feet,equivalent to an oil equivalent of 122.5 million barrels of oil equivalent.Chu-Sarysu basin within the Lower Carboniferous du-order-under the Visean stage reservoir combinations recoverable gas resources amount to 0.324 trillion cubic feet,the Lower Carboniferous Visean stage-Serpukhov order to hide a combination of natural gas recoverable resources to be found It is 0.242 trillion cubic feet.Therefore,the Lower Carboniferous is the largest natural gas resource in the Chu-Sarysu Basin,accounting for 77% of the total recoverable resources in the basin.