Study Of Chang 8 Reservoirs Characteristic Production Strategy In Honghe Oil Field Of Ordos Basin

Through thirty years'exploration,most of the reservoirs which are easily discovered have been found in Honghe Oil field.It effects the deeper process of the exploration and production because of the absence in the characteristic of the reservoirs.Facing the super lower permeablity reservoirs,it is necessary to do the research of the reservoirs and make the reasonable plan of the production.Honghe oil field locates in the south of Tianhuan Ordos basin.The Chang 8 reservoirs belongs to the lithologic reservoirs.The Chang 8 reserves of Honghe oil field is the front delta deposit of the braid river.The Chang 8 is devided into two facies and three subfacies and five microfacies,the main microfacies are underwater distributary channel.The Chang 8 reserves is surper lower permeability with stronger heterogeneity.The main sandbody of Chang 8 is distributed toward north-east to south-west and contorled by the microfacies.By the research of The Chang 8 reservoir's diagenesis and authigenic mineral analysis,the Chang 8 reservoir diagenesis is established.According to the imaging logging and the conventional logging method,It establishes logging fracture recognition model,forecasting the fracture zone.Tht crack is mainly developed in the central of the oil field near the fault zone,with high-yield industrial oil flow well distributeing there.The Chang 8 reservoir sandbody distribution is mainly under the control of sedimentary facies belt,into the reservoir is mainly controlled by lithology lapout and sand body properties,the sedimentary facies is the oil and gas enrichment main control factors,the crack control of Chang 8 reservoir is local the main reason of high yield.Through the Chang 8 reservoir research of the geological features,the development strategy which is suitable for Honghe oil field is put forward.According to the time of advanced water injection,timely replenishment of formation energy is to maintain reservoir pressure mining.According to the different types of Chang 8 reservoir characteristics,It puts forward the Chang 8 reservoir water injection well net model and optimization method.Through the test of horizontal well,It put forward Chang 8 geological condition that adapted to the development of horizontal wells.The Honghe 37 well area of was choosed as the horizontal well development in Honghe District.It is expected that 200000 tons capacity of Honghe 37 well area built in 2012.