Effective For Determining Oilfield Waterflooding Countermeasure Research To Increase Production

Nowdays,a significant proportion of flooding oil field has in Ultra-high Water Cut stage and exploration and development of oil are getting more difficulty. How to evaluate the water injection oilfield’s waterflooding effect correctly, which provide the correct guidance of the effective water injection so as to formulate rational countermeasures to enhance the recovery of the yield is the urgent issue need to address.This paper taking the V lower layer seriers of Shuang He oilfiled as an example,from the actual characteristics of the reservoir using a variety of methods for the evaluation of Ultra-high Water Cut stage oilfield’s waterflooding effect, analysis of the limitations of the different methods, and Study of water flooding pore volume multiple in the plane of the quantitative characterization which breakthrough the limitations of previous methods effectively,realized from the microscopic quantitative evaluation of water flooding effect. The main work of this paper are as follows:1) Using classical reservoir engineering method for the evaluation of Ultra-high Water Cut stage oilfield’s water flooding effect,piont out this method has the limitation that it only can from macroscopical on the accurate evaluation of water injection effectiveness;2) Using the reservoir numerical simulation method to study the oil distribution and characteristics of V lower layer seriers, at the same time, piont out that this method can from the microscopic evaluation of water flooding development effect but difficult to achieve accurate quantitative evaluation which can only a qualitative assessment.;3) Study of waterflooding pore volume multiple in the plane of the quantitative characterization which make microscopic quantitative evaluation of water injection effect becomes possible. Analysis the relationship of waterflooding pore volume multiple and water saturation in typical well group of V lower layer seriers, got a turning point of waterflooding pore volume value and the ultimate waterflooding pore volume value which provides the basis for the water injection exactly;4) According to the research results of this paper, through the basis of waterflooding pore volume multiple, according to the actual characteristics of V lower layer seriers put forward different countermeasure of prompt production, analysis and comparison effect of different schemes in order to obtain the optimal scheme;This paper primarily developed a scientific, effective and advisable method to evaluation of waterflooding effect for the Ultra-high Water Cut stage reservoir. According to the actual characteristics of V lower layer seriers And proposed several scheme for the yield increasing countermeasure and using the reservoir numerical simulation method to obtain the optimal scheme. The research has an important significance to instruct the development of Ultra-high Water Cut stage oilfield.