Abstract: A method for distinguishing an authenticity of high-pressure physical property parameters of oil reservoirs is provided. The method includes: collecting the high-pressure physical property parameters, screening a standard well, calculating a pump efficiency by means of formulas, then calculating an absolute value ?=|?theory??reality| of each group of absolute errors, and taking a smallest absolute value ?min of the absolute error. wherein ?min??, ? is a set accuracy, generally, 0???0.02, and the high-pressure physical property parameters corresponding to a group of the theoretical pump efficiency ?theory and the real pump efficiency ?reality are real high-pressure physical property parameters of an oil reservoir to be distinguished. The method provides a fast, simple and practical means for distinguishing correct high-pressure physical property parameters. The method is applicable to an oil well in a certain zone of an oil reservoir to be determined.

Abstract: This invention relates to a mechanical oil recovery method and system with a sucker-rod pump. The method calculates the lowest power loss or the lowest cost. The method comprises sequentially arranging internal diameter, steel grade of rod, pump diameter, pumping depth and stroke amplitude, searching the combinations of rods to calculate pump efficiency and the number of strokes, on the basis of Pinput=Pactive−Pexpansion+Ploss, and calculating, corresponding to the input power Pinput, active power Pactive, expansion power Ppeng, ground power loss Pd, sliding power loss Ph and viscose power loss Pv and the sum of losses Ploss. The mechanical oil-recovering cost is then calculated for each combination, and each mechanical oil-recovering parameter is chosen.