The Study Of Ares Low Permeability Oil Reservoir Characterization And Development Technique

Arys Oil Field is located in the district sherlinta area kizipolt state, In the regional tectonic, of anticline horst axisa depression aryskum South Turgai basin, Paleozoic bedrock is uplifted above the drape anticline, However, blinov nearby oil fields, oil fields at different Binhu tectonic belt. The overall structure of a relief anticline, construction East West steep relief in the eastern part of the main fault structure comparison development, relatively few western fault, trap types are mainly broken anticline.The middle Cretaceous reservoir is divided into M-I-1, M-I-2, M-I-3 and M-II-0, M-II-1 sets of strata; Jurassic is divided into J-0-0, J-0-1, J-0-2, J-0-3, J-0-4 and six J-I formation; one M-I-1, J-0-1 and J-0-3 for the ares, the main hydrocarbon-bearing formation oil field .Multi-reservoir rock types, there are pink sandstone, fine sandstone, sandstone and conglomerate, in order to fine-grained sandstone and siltstone dominated; sedimentary rhythm with positive rhythm-based, including anti-rhythm, uniform rhythm; Cretaceous reservoir facies are mainly delta plain subfacies of the distributary channel, Jurassic reservoir facies is mainly delta front subfacies underwater distributary channel, mouth bar; Cretaceous reservoir average porosity of 19.3%, with an average penetration rate of 30mD, is a medium porosity and low permeability reservoirs, sand body has a more serious level, the plane heterogeneity; Jurassic Reservoir average porosity 26%, with an average penetration rate of 323mD, belonging to middle and high hole, high permeability reservoir, layer, plane heterogeneity more serious. MI-1,Ю-0-1 sand body thin and pure, single-laminated sand-body small, single-layer stability and development of sand interval,Ю-0-3 sand thick layer of mud sandwich more development.Arys Cretaceous oil for gentle drape anticline reservoir sand body development in the region comparison, reservoir type controlled by the fault side of gas cap with the saturated water reservoir structure; Jurassic thick edge at the top of thin reservoir sand bodies are mainly distributed in the oil fields in the eastern, J-0-1 for lithology - fault-controlled structure with side water reservoir, J-0-3 to be a fault with the air control Top and edge water reservoirs saturated structure.In the original formation pressure conditions, the largest oil producing pressure drop can be reasonably identified as 3.0MPa. Ares Cretaceous oil flowing well initial production capacity of around 20m3/d, of the Jurassic is 45m3/d; Well the early Cretaceous artificial lift production capacity of about 30m3/d, of the Jurassic is 70m3/d. Ares Economic Limit of Single Well Oil Field production of 5.0m3/d. Ares way for rational development of oil field water flooding. Ares Cretaceous oil reservoir reasonably well spacing 150 meters, Jurassic 250~300 meters. Ares Oilfield horizontal wells, oil well fracturing effect of significantly increasing production, but apart fromЮ-0-3, other reservoirs because the effective thickness of small mezzanine development, there are certain risks of drilling horizontal wells.