The Feasibility Study On Pattern Of Well During Development In Fan188-122Block Of Chaoyanggou Oilfield

Daqing oilfield is the biggest one in our country, since discovered,which has entered thestage of high water after decades of development.Because of the fragmented, complex andchangeable distribution of oil and water relationship, the exploration and development of oilremaining more difficult in oilfield. Under the circumstance of energy crisis, stability is apressing matter of the moment to oilfield, so it’s imperative to accelerate the low permeabilityand the extra low permeability reservoir development in further depth reasonably. Inperipheral oil fields of Daqing,fault is concentrated,sand body is insmall scale,and thedistribution of oil and water is complex.The current research for low permeability reservoir isstill in the exploratory stage, which is not very mature. In the mechanism, there is not matureand forming theory for the extra low permeability oil field development which can be able tosolve the actual problem well.How to reasonably implement the well pattern thickening,improve the low permeability and the extra low permeability oilfield recovery ratio is vital.Chaoyanggou Oilfield is the earlist developed extra low permeability reservoir in Daqingperipheral area.This paper is based on block sedimentary facies study, combination of well andseismic, tectonic and other geological feature research results,combining with the oil testresults and approaches developed area capacity dynamic blocks, and the application ofadjacent northern part which has been utilized to block development effect and advancedwater injection technology.According to the development scale and direction of block sandbody and artificial fractures, with the method of the calculation of reservoir engineering andnumerical simulation, reasonable well pattern and well spacing are determined, and theeffective drive system can established in further,as a result of the improvement of controldegree of water flooding and effective development of the block. In this paper, the economicbenefits is in top priority.The Fan188-122block is preferably chosen because of a goodreservoir properties, reservoir development and high test oil yield,which is for the feasibilitystudy on the development of well pattern.Well location deployment of109development wellsis carried out.Obviously,the result of the studying area shows a fairly bright and executableeconomic prospect,at the same time providing experience and basis for the future development of low permeability and extra low permeability reservoir.