Research On Residual Oil Distribution And Potential

Oil has long relied on natural energy exploitation,along with the prolonging of waterflooding time,the oil entered into high water cut stage,formation pressure decreases gradually,the production decline rapidly,at the same time as the Putaohua and Gaotaizi two oil-bearing reservoir differences and Putaohua reservoir of edge water propelling effect,resulting in the increase of water content.Oil in water flooding process,influenced by both water and edge water,where the well network is imperfect,underground oil and gas water distribution gradually complicated,surplus reserves difficulty increases,resulting in the oil field is more and more difficult,serious impact on the effect of oilfield development.This paper mainly studies from the following four aspects: 1)study on the distribution of remaining oil;2)study on the adaptability of injection production well pattern;3)research on side water energy;4)experimental study of oil and gas balance mining.By means of dynamic analysis method,numerical simulation method,sedimentary facies method and dynamic monitoring method,the remaining oil research methods at home and abroad are carried out to study the distribution law of remaining oil in XX oilfield.The remaining oil is guided by the remaining oil distribution law and the actual development of oil field water injection.According to the current well problems of injection production well network adaptability research of the dynamic monitoring and numerical simulation technology,the adjustment program,increase the water flooding control degree,improve the recovery rate;for oil by water rose quickly push the issue of edge water reservoir engineering method,simulation method and numerical study the energy of edge water,by strengthening the swabbing parameter adjustment,strengthen the reasonable casing pressure control,strengthen water plugging technique,inhibition of edge water advancing,effective control of the rising water cut;according to the actual oil and gas water distribution is complex,the field test was carried out to balance the oil and gas exploitation,combined with numerical simulation,further exploration of oil and gas balance mining method.This paper takes XX oilfield as the research object,carry out the distribution of remaining oil in the simulation and analysis of reservoir potential and comprehensive study of stimulation measures,so as to form a new model of XX oilfield comprehensive technology,for other similar reservoirs in late development has certain guiding significance.