Direct-drive motor twin-well oil pumping unit
A technology of direct drive motor and pumping unit, which is applied in the field of oil production machinery technology research, can solve the problems of inability to improve efficiency, have not been applied on a large scale, increase the stroke limit, etc., and achieve the effect of improving efficiency, compact structure and increasing output.
Inactive Publication Date: 2012-12-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
At present, a double-well pumping unit improved on the basis of the beam pumping unit has been developed, but the efficiency of this type of double-well pumping unit cannot be improved because the working principle is close to that of the beam pumping unit. Limited in stroke, therefore not scaled
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[0015] The structure and working principle of the present invention will be further illustrated below in conjunction with the accompanying drawings.
[0016] exist figure 1 , figure 2 , Figure 5 It can be seen from the figure that the output shaft of the permanent magnet motor (1) is directly connected with the sky wheel assembly (3) with a coupling (2); the permanent magnet motor (1) can realize positive and negative rotation by itself, and the coupling (2 ) is selected as the flange spline coupling; image 3 , Figure 4 It can be seen from the figure that the guide wheel assembly (5) is installed on the side of the truss assembly (7) to the main wellhead, and the telescopic wheel assembly (6) is installed on the side of the truss assembly (7) to the auxiliary wellhead; The core components of the assembly (4) are two narrow belts and two wide belts. One end of the two narrow belts and one end of the two wide belts go around the guide wheel assembly (5) and are connected...
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The invention discloses a direct-drive motor twin-well oil pumping unit. The direct-drive motor twin-well oil pumping unit comprises a permanent magnet motor, a coupling, a head sheave assembly, a belt assembly, a guide wheel assembly, an expanding pulley assembly, a truss assembly and a weight box. The direct-drive motor twin-well oil pumping unit is characterized in that an output shaft of the permanent magnet motor is directly connected with the head sheave assembly through the coupling, one side of the truss assembly, which is opposite to a main wellhead, is provided with the guide wheel assembly, one side of the truss assembly, which is opposite to an auxiliary wellhead, is provided with the expanding pulley assembly, one ends of two narrow belts and one ends of two wide belts of the belt assembly are connected with a main wellhead beam hanger by winding the guide wheel assembly, the other ends of the two narrow belts are connected with the weight box by winding the head sheave assembly, and the other ends of the two wide belts are connected with an auxiliary wellhead beam hanger by winding the head sheave assembly and the expanding pulley assembly. The direct-drive motor twin-well oil pumping unit has the advantages that the twin-well oil pumping is achieved, the oil pumping unit can be adapted to oil wells with different well spacing by regulating the expanding pulley assembly, the reduction gear and the reversing mechanism are omitted, the efficiency is improved, the long stroke is achieved, and the increasing of the oil field production is facilitated.
Description
technical field [0001] The invention relates to a mechanical device for oil production in an oil field, which belongs to the technical research field of oil production machinery. Background technique [0002] At present, mechanical oil recovery is the main oil recovery method in oilfields, in which beam pumping units dominate. However, the average efficiency of the beam pumping unit system is only about 25%, and the energy consumption is high. At the same time, the maturity of oil exploration and drilling technology has made the development of cluster wells a development trend in oil fields. There are more than 800 cluster well groups and more than 3,000 wells in my country, and more than 500 cluster wells are newly added every year. With the increasing number of offshore oil wells, land infill wells and cluster wells, if we continue to use the production method of one machine and one well for such oil wells, it will not only cause waste of electric energy, but also increas...
Claims
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Inventor 肖文生崔俊国董维彬
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)