Wing-lok Oilfield Tai 105 Block Putaohua Reservoir Fine Reservoir Description

With the exploitation of Daqing oil field has been continuously deepened and composite water cut increased, Daqing peripheral oilfield has become an important part of Daqing oil field output, but such belong to low-permeability, low-yield and low abundance of the "three low" reservoir, waterflood development difficult and poor economic benefit. Therefore, the capture of Daqing peripheral oilfield exploration and development technology has great practical significance to achieve the goals that Daqing Oilfield sustained and stable 40 million tons of oil.Daqing Wing-lok Oilfield Tai 105 block put into production in 2002, water injection development is still in its early stages, as at March 2007 water cut is 17.4%, Recovery Percent is 8.5%. Oilfield has low integrated water cut, higher proportion of inefficient wells, oil wells reception effect uneven in plane,it is necessary to carry out Comprehensive Adjustment.Oil and gas distribution is controled by a variety of factors ,such as sedimentary micro-facies, heterogeneity, crack ect., especially for low-permeability reservoir, fine characterization reservoir is the primary task to guiding oilfield development adjustment and improve ultimate recovery.Tai 105 block is effect on sedimentary characteristics,so heterogeneity is relatively serious, 64.4% of the reservoir is ultra-low permeability reservoir in block. cracks is comparative development, belong to the ultra-low permeability reservoir in Daqing peripheral oilfield. The research object in this paper is tai 105 block which carried out fine reservoir description study. In this paper the developing of fine reservoir division and correlation is basiced on original small layer contrast work,further unification small layers in reservoir, and division the entire reservoir to sing sand lever.Tai 105 block Putaohua reservoir is mainly compositon of delta exteral front and waterfront shallow lake subphase sedimentary, according to this characteristics, use of the method of stratigraphic correlation of lake phase stable deposition layer, and use of old oil wells Micronesia Net provided a wealth of dynamic , static information, Putaohua I Group reservoir is subdivided into eight depositional units. On this basis at the plane breakdown of sedimentary microfacies, to fine study sand body geometric morphology, spatial distribution features and layer, interstratified heterogeneous characteristics, mainly study reservoir fracture characteristics, remaining oil distribution, determin remaining oil distribution in study area target strata,for expansion a more effective adjustment potential tapping job, enhance oil recovery eventually provide a scientific basis.