Study On Distribution Characteristics Of Remaining Oil In Mawangmiao Well Area Ma 36

Since 1990,the proportion of proven reserves of petroleum deposits in shallow,medium,medium and low pressure structures has been increasing.In view of this growing trend,it is easy to see that the development of medium permeability oil field plays an important role in the oil industry.Therefore,all kinds of problems to solve in the detailed analysis of the permeability,and a comprehensive study of low permeability oilfield development,using the previous successful experience,so as to improve the efficiency of oilfield development,so that the economic benefit can be improved,for most in permeability oilfield can be fully developed,and the oil industry to sustainable development.Taking Mawangmiao Ma 36 well area in high permeability reservoir as the research background,purpose of the majority of Jianghan Oilfield has entered into the late development stage.Therefore,through the development of Ma 36 well area adjusting injection production flow and a potential effect of changing technology,puts forward a set of effective and economical potential Chuangxiao technical countermeasures to deal with the current situation of oil prices continued to slump,with good technical guidance to improve the development effect,stable production for the old ideas and broaden the road,has wide application prospect,has long-term implications for the long-term economic development in Jianghan Oil region.The current global oil and gas exploration means,the most effective,but also the most widely used method is the exploitation of water flooding,water flooding can not only greatly improve the recovery rate of oil and gas,but also can effectively guarantee the oil quality of oil and gas.In addition,in order to improve the amount of water injection as much as possible,most experts and scholars in the industry have explored the timing of water injection and the influence of water injection on the amount of oil production.The famous Russian oil exploration scientist Ivan Love think it should be as early as possible to inject water in the mining area,in order to maintain formation pressure,thereby facilitating the exploitation of oil and gas;and the famous American scholar Simth advocated the formation pressure at the critical value,and the purity of water,so you can keep oil and gas as much as possible,and also can greatly reduce the cost of mining.Later,scientists are summarized for the two kinds of methods:when less oil and gas storage,can take early injection way of mining,and when the oil and gas storage capacity is large,you can take the method of mining water injection delay.In foreign oilfield development,the permeable structural reservoir takes a long time,usually more than 40 years.The partition of Ma 36 well block,stratified study flooding water wells appear imperfect injection production pattern,flat contradiction,the edge of the well water efficiency is not high,and the production level does not match the contradiction between layers,the longitudinal uneven water problem.Based on the geological characteristics and reservoir dynamic analysis of the second oil formation in Ma 36 well area,it is mainly for the block.The distribution of residual oil are studied and discussed,to clarify the distribution,mainly obtain the following understanding:(1)the rising speed of water wells up,local injection production contradiction,the current well network is imperfect,resulting in the water flooding effect is not ideal;(2)the longitudinal residual oil distribution due to reservoir poor overall storage,fifth layer and third layer than in fourth layers,and the relationship between oil and water wells,resulting in the overall production level is not high,the potential remaining oil mainly concentrated in 4 group II oil layer;(3)the plane distribution of remaining oil:local residual oil injection water is not the plane.Spread to the plane of the enrichment;poor site is the main area of remaining oil distribution;the plane between wells and wells near the dividing line is not affected by poor control and oil efficiency area will be divided.The remaining oil accumulation area is also distributed near the fault,the injection production area is not perfect,there is no flow direction,and the main sand dam is near.The program to adjust the block according to the above results,the mining potential of remaining oil,perfect injection production pattern,plane adjustment of injection structure,the injection way of Nii and the yield and recovery rate is increased,the effective role for oilfield sustainable development.This project has a positive effect on improving reservoir development in Ma 36 well area,and also has wide application space and value for Jianghan oilfield.