WO2010088789A1 - Integrated oil pumping device - Google Patents

Abstract

An integrated oil pumping device comprises an oil pumping device, a power transmission device and a well bore system, a frame (6) is vertical to a well head (13), a support leg (7) is vertically fixed at the position of the frame and the well head, the top end of the support leg is fixed with a branch well pulley (1); centered at an output shaft of a speed reducer (4), many branch well pulleys are horizontally fixed in the plane of the top of the frame in order, the speed reducer and an electromotor are fixed on the lower end of the frame from top to bottom, an end head of the output shaft of the speed reducer is connected with a crank (3), crown blocks are arranged on the upper portion of the crank and coaxial with the electromotor and the speed reducer, and a traveling block is fixed on the other end of the crank and is in the same plane with the crown blocks; a wire rope (5) is connected with a downhole oil pump and passes through a telescopic well head sealing device (10), after bypassing the crown block on the top end of the oil pumping device, a commutating pulley (11) in the same plane with the crown blocks on the upper portion of the crank, and the branch well pulley on the top end of the support leg, the wire rope is locked on a joint bight of the traveling block of the crank. The oil pumping device can drive a plurality of oil wells within the distance of 50-100 meters to pump oil simultaneously.

Description

 An integrated oil pumping device Technical collar i or: The utility model relates to an oil mining machine, in particular to an integrated crank pumping machine.

Background technique:

 The international energy supply situation is becoming increasingly tense, and China's crude oil imports are increasing year by year. National economic development has higher requirements for energy and energy consumption. The new century world advocates entering a harmonious society and developing safe, energy-saving and green production processes. With the development of oil fields and the continuous development of technology, there are many kinds of mechanical oil extraction equipment ranging from beam pumping units to beamless pumping units to meet the needs of different mining periods. At present, 75% of the pumping unit used for artificial lifting is mainly a beam pumping unit. According to the structure of the crank four-bar linkage of the hoe, it is divided into a conventional beam pumping unit and a front type. Beam pumping unit, out-of-phase beam pumping unit and silent head type beam pumping unit. This type of pumping unit has poor kinematic performance, many energy transmission links, single function, high energy consumption, low performance-price ratio, low payload ratio, and large adjustment and balance strength. At the same time, some oilfields have the characteristics of low oil well production, intermittent oil recovery, and dense oil well distribution. The production and maintenance investment is more and the energy consumption is greater.

 Summary of the invention:

In view of the poor performance of the existing pumping unit, the low utilization rate of the single-machine single-well equipment, the inability to balance each other, and the large fluctuation of the load, the utility model provides a community integrated pumping center system, and the pumping unit is mainly composed of a light flexible rope. In place of the original rigid energy transfer structure, a pumping unit is used to drive multiple oil wells around 50-100m to pump oil at the same time to achieve multi-purpose, regional oil recovery; no special balance block, reducing the pumping unit The weight can be automatically balanced with each other through the load changes of each well; reliable self-powered start and down pump operation, test Multi-functional; integrated, well, mechanical balance, reasonable, more compact system, several times smaller volume; continuous pumping.

 In order to achieve the object of the present invention, the technical solution adopted is:

 An integrated oil pumping device includes an oil pumping device, a power transmission device, and a wellbore system. The oil pumping device comprises an electric motor, a reducer, a frame, a leg and a pulley block; the wellbore system comprises a bracket, a telescopic wellhead sealing device, a wellhead pressure plate, a casing and a pumping pump; the power transmission device is mainly composed of a pulley, a crank, a wire rope, a wire rope The ring group is formed; the frame is perpendicular to the wellhead, the legs are fixed vertically at the frame and the wellhead, and the well pulleys are fixed at the top of the legs. In the upper plane of the frame, a plurality of well pulleys are horizontally fixed in the center of the output shaft of the reducer. The lower end of the frame is fixed with a speed reducer and a motor from top to bottom. The output shaft end of the reducer is connected with a crank. The upper part of the crank is coaxial with the motor and the reducer, and the other end of the crank is fixed with the fixed pulley. a movable moving pulley; a steel wire rope connected to the downhole oil pump, passing through the telescopic wellhead sealing device, bypassing the fixed pulley at the top of the oil pumping device bracket, the reversing pulley in the same plane as the fixed pulley above the crank, and the well pulley at the top of the wellhead leg After that, it is locked on the movable pulley coupling loop of the crank.

 In order to achieve the object of the present invention, the technical method adopted may also be: uniformly and horizontally fixing the well pulley in the upper end plane of the frame with the output shaft of the reducer as the center. The number of well pulleys is even.

 Compared with the prior art, the beneficial effects of the utility model are:

The integrated pumping center system of the residential area adopts the above scheme, and adopts a crank and a crank upper moving pulley to make a circular motion with the output shaft as a center of the circle, and drives the flexible transmission components of each wellhead to reciprocate, realizing regionality, and a pumping unit drives around 50. - Multiple wells in 100m at the same time Pumping oil, multi-purpose machine, regional oil production. There is no special balance block, the pumping unit does not need to add balance weight, which reduces the weight of the pumping unit. It can balance with each other through the load changes of each oil well, thus achieving the balance of the whole system. The motor always performs effective work and improves the system. effectiveness. Versatility, reliable self-powered start, down pump operation, testing, etc. Integration, the elimination of the balance block and the sucker rod, the system is compact and simplified, reducing the weight and volume of the pumping unit. Energy saving, less one-time investment, long service life.

BRIEF DESCRIPTION OF THE DRAWINGS:

 Figure 1 is a front view of the utility model;

 Figure 2 is a plan view of the present invention.

 In the figure: 1 is a well pulley, 2 is a rope loop, 3 is a crank, 4 is a speed reducer, 5 is a wire rope, 6 is a frame, 7 is a leg, 8 is a fixed pulley, 9 is a bracket, 10 is a telescopic type Wellhead sealing device, 11 is a reversing pulley, 12 is a wellhead pressure plate, 13 is a wellhead, 14 is a casing, 15 is an electric motor, and 16 is an oil pump. detailed description:

 Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. 1 and 2, the oil pumping device of the integrated oil pumping device is composed of an electric motor 15 and a speed reducer.

4. Frame 6, leg 7, and pulley block. Wellhead pressure plate 12-side vertical fixed bracket

9 , a fixed pulley 8 and a reverse pulley 11 are connected to the bracket 9; a plurality of legs 7 are vertically fixed on the oil pumping frame 6 , and the pumping unit does not need a foundation, thereby greatly saving the construction cost of the pumping unit; 6 In the upper end plane, a plurality of distribution pulleys 1 are horizontally distributed with the output shaft of the reducer 4 as a center, and the distribution pulley 1 is fixed to the legs 7. The lower end of the frame 6 is fixed with an electric motor 15 and a speed reducer 4 in sequence. The output shaft end of the reducer 4 is connected with a crank 3, and the upper end of the crank 3 is connected with a movable pulley on the same plane as the split pulley 1; Flexible transmission The moving component wire rope 5 is connected to the downhole oil pumping pump 16, the telescopic wellhead sealing device 10, and sequentially passes around the fixed pulley 8, the reverse pulley 11, the distribution pulley 1, and is locked on the movable pulley coupling ring 2 on the crank 3; The upper movable pulley drives the telescopic wellhead sealing device 10 on the steel wire rope 5 and the downhole oil pump 16 to reciprocate up and down, and directly converts the circular motion of the crank 3 into a reciprocating motion of the flexible transmission body, and at the same time bans the sucker rod, the beam and the beam The balance is heavy, the load and weight of the pumping unit are reduced, so that the maximum stroke is doubled, thereby improving the performance of the sport, reducing the energy consumption, increasing the effective load rate, and achieving the purpose of lifting the pump. - In order to balance the component forces of the wire ropes 5 from the respective wells by as much as possible, reduce the force of the crank 3, and improve the service life of the utility model, the upper end of the frame 6 of the utility model The well pulley 1 is horizontally fixed at intervals with the output shaft of the speed reducer 4 as a center. This embodiment is further characterized in that the number of the distribution pulleys 1 is an even number, and this design can further reduce the stress on the crank 3.

 During operation, the wire rope can be removed from the rope loop 2 to start and lower the pump, test, etc., and the remaining wells can continue to produce oil. By adjusting the length of the locking end of the wire rope 5 when adjusting the stroke, a very small number of stroke adjustments can be achieved by changing the gear ratio of the speed reducer 4, and the stroke and the stroke can be adjusted without stopping.

Claims

Rights request  An integrated oil pumping device, comprising an oil pumping device, a power transmission device and a wellbore system, wherein: the oil pumping device is composed of an electric motor, a speed reducer, a frame, a leg and a pulley block; the wellbore system comprises a bracket and a telescopic wellhead Sealing device, wellhead pressure plate, casing and oil pump; The power transmission device is mainly composed of pulley, crank, wire rope and joint ring; the frame is perpendicular to the wellhead, the legs are fixed vertically at the frame and the wellhead, and the wells are fixed at the top of the leg. Pulley, a plurality of well pulleys are horizontally fixed in the upper end plane of the frame with the output shaft of the reducer as a center. The lower end of the frame is fixed with a speed reducer and a motor from top to bottom, and the output shaft end of the reducer is connected with a crank and a crank. The upper part is coaxial with the motor and the reducer, and the fixed pulley is fixed on the other end of the crank. The wire rope is connected to the downhole oil pump, and passes through the telescopic wellhead sealing device The pulley, the reversing pulley in the same plane as the fixed pulley above the crank, the top of the well leg After the well pulley, lock on the movable pulley coupling loop of the crank.  2. An integrated oil pumping device according to claim 1, wherein: a plurality of well pulleys are horizontally fixed at intervals in the upper end plane of the frame with the output shaft of the speed reducer as a center.  3. An integrated oil pumping apparatus according to claim 2, wherein: the number of the distribution pulleys is an even number.