Xifeng Oilfield Well Productivity To The Identification Stimulation Techniques To Optimize

Xifeng Oilfield different well production per well is too low, high moistue content, stable difficulties and other issues, Selected wells of five representative group from the Xifeng Oilfield, Of which41production wells, five water injection wells, A total of46production wells to do research.In this study, from the Xifeng oilfield geological features, the regional tectonic characteristics of the starting, Analysis of the impact of various factors of production per well, and a typical well group the law of diminishing research, and draw a typical well group descending plate. On this basis, systems analysis Xifeng Oilfield typical wells group effective the use of the penetration of the lower limit. Typical well group the geological model and use numerical simulation techniques, Xifeng Oilfield typical wells group yield optimization. Results in Xifeng oilfield production contracting knowledge and stimulation techniques to optimize an important guiding significance.In this paper, focusing on the problems faced in the Xifeng oilfield five typical well group development, Mainly from the capacity factor analysis, and application of the geological model, numerical simulation techniques, Xifeng Oilfield typical wells group of single-factor stimulation technology optimization method. Stimulation technique orthogonal method achieved the following results.(1)Study analysis, the main parameters affecting the production per well:Reservoir properties, the effective thickness,the bottom pressure, bottom hole flowing pressure, pressure cracks.(2)Analysis shows that the law of diminishing of the Xifeng oilfield production of a typical well group, typical well most of the production wells are the hyperbolic decline.(3)Comprehensive analysis of well test interpretation and the injection profile data Comprehensive analysis of well test interpretation and the injection profile data, Xifeng Oilfield utilized permeability of the lower limit of between0.15-0.8×10-3μm2. Taking into account the thickness of oil layer in the well test interpretation is not deducted that can not use some of the thickness, Thickness larger than the real mobile penetration may cause to explain the low penetration rate, it can be speculated that the lower limit of the typical wells group of Xifeng Oilfield reservoir permeability is0.3-0.4×10-3μm2.(4)Typical well group capacity univariate analysis shows that Production degree seenfrom the simulation program of each single factor, Z33-16well groups flowing bottom holepressure changes in the recovery percent is the largest gap, Water injection rate is the second,The crack length change is the smallest, Water injection multiples and bottomhole flowingpressure changes in amplitude is the same. Mined the degree of X70-57and of Y32-025wellgroup bottomhole flowing pressure change is the biggest gap, Water injection rate multiplier isthe second, The fracturing length change is the smallest.(5)Application of stimulation technology to optimize the orthogonal design5typicalwells5years,10,15at the end of daily fluid production and recovery percent, Determine areasonable development parameters and the main parameters affecting the development.