Potential Resources Assessment In Aer Sag Of Erlian Basin

Aer Sag is located in china and near the border of Inner Mongolia;Aer Sag belongs to the Erlian Basin in its construction on the northeast of Bayinbaolige uplift zone.The K1bt1?K1ba are two sets of active hydrocarbon formations,and they arelacustrine facies mud rocks.Resource evaluation is a cornerstone of further exploration.The discovery of reserve resources,the implementation of reserves,exploration is still facing a new topic.To carry out the potential evaluation,to carry out the exploration potential,to clear the direction of oil and gas,provide evidencefor the trap target,has very important significance.Based on the existing geochemical analysis and verification,the systematic logging data and other tectonics,strata,reservoirs,traps and reservoir data are analyzed by using the logging source rocks evaluation and basin simulation,resource evaluation techniques,The oil and gas resources are analyzed quantitatively,and the amount of hydrocarbon resources is calculated quantitatively.The residual resource potential of each structural belt is clarified,and the next step is pointed out the main exploration potential area.The evaluation process and evaluation system of well source and organic system are used to evaluate the single well of source rock,and the distribution characteristics of source rock are analyzed by means of sequence stratigraphy.The results show that the source rock is a medium-high quality source rock in K1bt1,and the medium-poor source rocks are mainly composed of the source rocks in K1 ba.The thickness of the high-quality hydrocarbon source rocks in K1 ba is 50-100 m.And the maximum thickness can reach 100 m in the Hanwula and Hada tectonic belts in the south.The thickness of K1bt1 the high-quality source rock is 50-300 m,which is larger in the south of Hanwula-Shamai tectonic belt,and can reach 300 m.The quality of the high-quality K1bt1 hydrocarbon source rock is higher than that of the K1ba's.According to the results of geochemical analysis,it is determined that the source rock of K1bt1 is ?-?1 and ?1-?2 in K1 ba.According to the reflectivity of vitrinite,the hydrocarbon generation threshold of the depression is determined.The key to the simulation of the basin is the choice of parameters,the history of the earth,the history of hydrocarbon generation and so on,which are determined according to the measured multi-point and repeated fitting.Based on the basin simulation and resource evaluation method,the amount of oil and gas resources in the Aer sag is 10251 × 104t(the amount of resources of K1bt1 is 6057 × 104 t and K1ba's is 4194 × 104t).The contribution rate of the oil is 11.39 × 108 t,the contribution rate of K1bt1 the oil production is 60%,the K1ba's is 40%,the contribution rate of the high quality hydrocarbon source rock is 84%,and the hydrocarbon source The main contributor to the amount of rock production;K1bt1 of high quality hydrocarbon source rock for the main hydrocarbon system.According to the basin simulation,reservoir simulation technology and comprehensive geological evaluation,it is considered that the exploration potential area of the Aer sag is: the direction of the oil migration in the northern part of the K1 ba is at the center of the Hada structure,And the direction of the oil field in the central part diverges from the center of Hada and the structure of the sand and sand.During the present period,K1bt1 oil migration in the northern part is at the center of Hada,AD1 and AD2 wellblock and at the center of Hada North.The direction of the oil field in the central part is clustered at the Shamai tectonic site and the AE63 wellblock Hanwula gathered.Through the simulation of reservoir formation,the shamai tectonic belt and the Hada tectonic belt are clustered with a large amount of resources.