Research On The Control System Of Oil Extraction Joint Station Based On PLC

Based on the technology status and development trend at home and abroad, combined with Daqing Chaoyanggou Oilfield low permeability reservoir sand body changes, uneven pore throats of small, solid-liquid interface strong molecular force and capillary force characteristics, constant speed applications mercury and principles of nuclear magnetic resonance to be determined Changyuan proven reserves of low permeability reservoirs can flow throat radius limit and the lower limit of permeability, low permeability reservoir seepage deepen the understanding of the law, that the microscopic structure and reservoir heterogeneities a great impact on reservoir flow capacity. For starting pressure factor analysis of the problems of different oil fields, especially sedimentary characteristics quite different fields starting pressure gradient results show that in spite of reservoir properties and pressure gradient has a good correlation, but microscopic reservoir pore structure characteristics and movable fluid percentage difference from sedimentary characteristics influence. In addition, the paper also introduces parameter expression characteristics of reservoir heterogeneity, parameters perfect multivariate classification and evaluation of ways to overcome the conventional classification of contradictions and problems in the use of permeability classification and quantitative evaluation of reservoir flow capacity. For adjust the water before the water flooding low degree of control, greater flow resistance, low single well daily oil production, large drilling, investment in infrastructure and other characteristics, it is necessary from the pore structure characteristics and flow characteristics of reservoir rocks start by indoor well flow Physics experiment optimization deployment and reasonable injection- production system adjustment, repeated fracturing, etc., from the previous optimization simple type well methods developed to the material balance principle, constitutive model theory and principle-based Extreme well multifunctional economic optimization model, developed a set of practical efficiency, reasonable production rate and improve the overall economic benefits of technology, detailed study of the effects of low permeability reservoirs flow conditions, proposes the Daqing Oilfield low permeability pending probe proved reserves developed effective use area conditions and Assessment development Strategies. Application of these technologies, choose low permeability blocks studied sound economic evaluation method to obtain good economic benefits for the future development of Daqing Oilfield deep well foundation.