Method for controlling operation of screw pump well by utilizing dynamic control chart of screw pump well
A technology of dynamic control and screw pump, which is applied in the direction of pump control, machine/engine, mechanical equipment, etc. It can solve the problems of rising maintenance costs and unsatisfactory measures, and achieve the effect of improving work efficiency and production conditions
Active Publication Date: 2013-02-13
DAQING OILFIELD CO LTD +1
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Problems solved by technology
Since this method does not conduct an in-depth analysis of the working characteristics of the screw pump well, the formulation of measures has a certain degree of blindness, resulting in increased maintenance costs and unsatisfactory results.
It should be an ideal method to use the well and pump dynamic control chart to realize the production management of the screw pump well. In recent years, the well control chart of the pumping unit has been widely used in various oil fields. , has played a positive role in the improvement of regional management level, but there is no dynamic control chart that can be applied to the control of screw pump wells
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Embodiment Construction
[0043] The present invention will be further described below in conjunction with accompanying drawing:
[0044] At first the method described in the present invention is outlined:
[0045] This method utilizes the dynamic control diagram of the screw pump well to control the operation of the screw pump well, and the method is composed of the following steps:
[0046] ① Formula 2-30 is used as a mathematical relationship model reflecting the relationship between the volumetric efficiency of the screw pump and the bottom hole flow pressure;
[0047] η v = 1 + f w ( 1 - f w ) B o + ...
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The invention relates to a method for controlling the operation of a screw pump well by utilizing the dynamic control chart of the screw pump well, which solves the problem that the prior art lacks a method for reasonably controlling the pump conditions of the screw pump well. The method is characterized in that the dynamic control chart program of the screw pump well is compiled according to the formula on the basis of the corresponding relationship between the volume efficiency and flow pressure of the screw pump well and the known data; the control chart is divided into five regions, namely a region to be verified, a reasonable working region, a parameter small region, a parameter large region and a breakage loss region; the positioning of the screw pump well in the dynamic control chart can be obtained after the volume efficiency of the screw pump well in the operation course and the flow pressure value at the bottom of the well are input into a computer; and the specific measures of regulating the parameters, inspecting a pump, exchanging the pump, pressing crack, acidizing, regulating the injection amount of an injection well and the like are formulated according to the region where the screw pump well is. The method can guide technical personnel to analyze the pump conditions and can specifically formulate the specific measures according to the distribution of well points in the control chart, thereby improving the production conditions of the screw pump well and enhancing the work efficiency of the screw pump well.
Description
Technical field: [0001] The invention relates to a control method applied in the field of oil production, in particular to a dynamic control method applied in the field of oil production of screw pumps in oil fields to realize reasonable control of the pump condition of the screw pump by using a dynamic control chart. Background technique: [0002] Screw pump oil recovery is a newly developed mechanical oil recovery technology. The screw pump oil recovery technology has the characteristics of low cost, low energy consumption and strong adaptability to medium. In recent years, with the maturation of supporting technology, its industrial scale has continued to expand, but Due to its short application time and small scale, a complete set of methods and systems have not been formed in terms of technical management and production management, and there is a lack of effective means to directly measure the working status of screw pump wells. However, during the long-term production ...
Claims
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IPC IPC(8): F04C14/00
Inventor 王妍武云石彭占刚王彤
Owner DAQING OILFIELD CO LTD