Huan 103 Block With Difficult-to-recover Reserve Potential Evaluation And Deployment Plan

With the oilfield development time,underground strata hole,the pressure reduces gradually,to ensure stable production of oil well,it must increase the formation pressure to ensure the normal production of oil well.The two oil recovery is the only way for the development of oil field,which is one of the ways to maintain the high and stable yield of the oil field.Especially in the late development of old oil fields,the conventional block potential ability is limited,oilfield development is technology intensive systems engineering,water flooding program is a programmatic document for the development of oilfield,there is a connection with the oilfield development economic and technical effect,especially for the development of some difficult to use block,through water injection,gas injection a series of technology,will be difficult to use block of oil and gas exploration,so as to improve the production of oil field.According to the geological condition of Huan 103 block in Liaohe oil field,it is mainly through the way of water injection.Huan 103 block is located in the lower step of the Huan Xiling block,and the block fault is relatively developed,A series of fault blocks have been formed under the action of the North-East Huan 4-Qi-133 fault and near EW fault.At present,the block has a total of 16 oil wells,there are 15 wells arranged in Dujiatai reservoir.As of December 2012,Huan 103 block of Dujiatai has 10 wells,normally open 1 well,2Salvage well,with an average daily crude oil production of 0.7T,no water,the cumul ative oil production of 6.07×104t,cumulative water production of 1.51×104m~3,tired gas production of 4164.0×104m~3.In the initial stage,Huan 103 block the average daily oil production of single well is 11.5t,Huan 103 well daily crude oil production is the highest,51.9t.In the early stage of production,oil production intensity and oil production of 12 fracturing wells,it can be seen that most oil wells have a certain capacity in the initial stage.can be seen from the intensity of oil production and oil production that most oil wells have a certain capacity in the initial stage of production.Crude oil production in the early days of more than 20 t of 1 wells,more than 10 t of the oil wells have 4.But the oil production intensity is low,more than 1 t/(d·m)of the oil well is only 2 wells,The lack of oil supply capacity.In addition,the block edge and bottom water energy is weak,and there is no water injection formation energy,so the oil production decline rapidly.Therefore,according to the characteristics of the reservoir,change the development mode,through the development of water injection,thereby improving the reservoir production,improve the development effect.