Research On Mining Technology Of Xifeng Oilfield Is Low Permeability Oil Reservoirs

Low permeable oil fields is refers to the low permeability oil reservoir, lowabundance and low single well production capacity of oil field. As the extension ofconstruction time, low permeable oil fields is generally a drop in crude production,comprehensive water cut rising, ground system layout is unreasonable, unbalanced load,the facilities corrosion problems such as aging, need to update the number of station,facility, equipment, pipeline is increasing, leading to production operation cost,maintenance cost and management cost increased year by year, not only affects the safeproduction of the oilfield, and affected the economic benefits of oilfield development.Xifeng oilfield is a typical low permeability reservoir changqing, in this paper toinvestigate the low permeability oilfield development present situation and developmenttrend of low permeability reservoirs resources exploration and development technology, onthe basis of sum-up xifeng oilfield is low permeability reservoir development, the mainproblems facing focus from development and technology policy evaluation, miningtechnology research in view of the problems encountered in the study of the correspondingdevelopment technology, among them the key to the water drive reserves control, pressurelevel, work level and the status of oil production rate, decreasing the developmenttechnical policy evaluation, from the necessity of development of energy, the feasibility ofwaterflooding, the feasibility of waterflooding in advance, advanced water injection timingand pattern system demonstration, advanced water injection and oil well pressure systempolicy, the single well production capacity of development technology research to do theresearch. And sums up the domestic and abroad, and changqing low permeabilityreservoirs of low permeability reservoir development process, the use of multipledisciplines, new theory, new method to carry out the overall evaluation of reservoir and theearly reservoir fine description, has carried on the division of flow units andthree-dimensional geological modeling, for the overall scheme and efficient development, the old oil field production and laid a foundation. Was carried out on the percolationmechanism of low permeability reservoir, the research of the system is established,non-darcy seepage equation of low permeability reservoir, studies the non-darcy flow inlow permeability reservoir development effect, reasonable development technologypolicies for oilfield provides a theoretical basis. At the same time, the xifeng oilfield waterseepage characteristics and the microcosmic oil displacement mechanism research; Usingnumerical simulation and conventional reservoir engineering method and mode ofdevelopment well pattern are optimized, xifeng oilfield reservoir characteristics areproposed form of well pattern, well distance, advanced water injection timing andinjection-production parameters; Carried out the fracturing technical renovation, casingcorrosion, oil and gas gathering and transferring process optimization and simplification,environmental protection research.