Reservoir Characteristics Of The Triassic Karamay Formation In The Hongnan-Lianmutun Structural Belt

Tuha basin flame mountain north slope Red South-Lian Muqin the structure belt Lian 4-S and Lian 23 well drilling three packs in the reservoir sees the good oil and gas showings continually, which has demonstrated good exploration prospect, but at present the degree of exploration in this area Karamay group is to low. This research take the reservoir geology as the instruction, mainly to study the Red South-Lian Muqin structural aspects and so on belt stratum, sedimentary facies characteristic and reservoir characteristic. Study found that Karamay formation sequence in Lukeqin structural belt and Lian Muqin structural belt were hypoplasia, only keeps rising half cycle of deposition, the sequence retain more full.more North The research discovered three packs are the Karamay group deposit for the braided river delta, mainly in the braided stream delta front. The reservoir rock type mainly for the feldspathic lithic sandstone, the lithic sandstone, the reservoir space has many kinds of types, including the remaining intergranular hole, the intergranular dissolves in the hole, the grain dissolves the hole, a grain of nib, between the matrix pore, the crystal the hole and so on, in which dissolves in Kong Heli by the intergranular to dissolve the hole primarily.The main throat type reduces and the laminated shape, the curved lamellar throat for the hole primarily.Uses many kinds of methods to determine the Karamay group effective reservoir porosity lower limit is 12%, reservoir nature for low porosity, low permeability.Including 4-s low oil-producing zone 3, including 23 well 2, suspicious oil layer 1,by ?,? kind of reservoir primarily.The research results provide the reference for this area Karamay group's next step exploration.