Chaluhe Shuanger Section Tight Gas Reservoir Forming Mechanism

Yitong Basin oil and gas exploration in Jilin oilfield has achieved many breakthroughs in recen years,in the basin tectonic characteristics、Stratigraphic、 sequence、sedimentary facies and reservoir characteristics,reservoir forming conditions and distribution law of oil and gas field and got many new achievements, through the new method、the application of new technology,gradually increase the degree of geological understanding of faulted basin,the implementation of a number of oil and gas reserves,especially in Chaluhe fault depression in the deep of Shuangyang groupfound by industrial gas reservoir reconstruction,to create a new situation of gas exploration in deep low permeabilityreservoir.Due to the exploration and evaluation of pre work dedicated to the middle shallow layer oil and gas exploration,no system for reservoir formation research on working mechanism and control factors of gas reservoir with low permeability,the accumulation mechanism is not clear,resulting in gas distribution is not clear,restrict the natural gas exploration work carried out smoothly.It is necessary for the effective reservoir distribution and formation mechanism to carry out targeted research work,the favorable areas of deep low permeability with predicted Sawa Kesunghide.In the sequence stratigraphic classification and correlation 、 The establishment of isochronous stratigraphic frame,to do alone Jingyan heart phase、Well logging facies and seismic facies of three phaseunity,clear sedimentary system、Sedimentary facies and sand body vertical variation characteristics.On the characteristics of tight reservoir petrology、reservoir characteristics、pore structure characteristics、as a basic research and secondary pore origin history evolution of rock,analysis of the causes of tight sandstone reservoir,especially the cause of relatively high permeability reservoirs,study on control factors of favorable reservoir,establish the forecasting method.Determination of low permeability gas reservoir forming mechanism,the establishment of poly model of natural gas reservoir with low permeability。To determine the gas rich regularity and controlling factors,favorable zone optimization、evaluation of potential of exploration and resource potential.