Sichuan Basin Maliuchang Gas Field In The Jialing River Formation Gas Reservoir Description

The paper is guided by the theory of carbonate sedimentology, reservoir geology, earthquake geology, develop geology and the gas reservoin description theories of the advanced improvement in the domestic and international. This thesis, whose main studied objects are the information of drilling,logging,earthquake and the dynamic develop data of the gas reservoin. It also adopts multi-subjects, multi-techniques synthesis methods and advanced analysis techniques that in-depth and detailed carried on the description to the sedimentary facies, structure the characteristic, faultage characteristic,crack characteristic, reservoir characteristic, stratum pressure system, fluid property and gas-water connection of Maliuchang Jialingjiang formation in Sichuan basin.This research express that the growth half limits the ～ to limit the sea mesa mutually is characteristic of the Maliuchang Jialingjiang formation. Mainly sedimentary facies include to the evaporate tidal flat , mix tidal flat (fragmental rock tidal flat,carbonate tidal flat ),tidal flat,half to limit the lagoon and limit of the lagoon etc. The reservoir rocks are haved mainly related grain-dolomite and aplite to dolomization.Mainly hole hypes of the reservoir rocks are intercrystalline holes ,intercrystalline unfreezed holes and a small quantity of intergranular holes,intragranular corroded holes. Analysis of normal physical properties of rocks and logging calculation express that porosity and percolation rate of the container rocks is lesser. The reservoir spaces are exiguous hole-secondary throat,crack-hole. The cracks are propitious to increase percolation rate. Combined to the dynamic and static state data of hydrocarbon reservoin, we researched in detail the temperature and pressure system of hydrocarbon reservoin. We think the three pay formations are each other connected in portrait.In transverse, Jialingjiang formation of Maliuchang is two independent the...