CN202280452U - One machine double well pumping unit - Google Patents

Abstract

The utility model relates to a one-machine twin-well pumping unit in oil exploitation. The purpose is to reduce the steel consumption and facilitate the maintenance and well repair operation. The double-well pumping unit comprises guide wheels, flexible ropes, a support and a driving device, wherein the guide wheels are fixed at the upper end of the support, the support is symmetrically arranged relative to the driving device, one end of each flexible rope is connected with a corresponding sucker rod string by bypassing the guide wheels at the end of the support, and the other end of each flexible rope is connected with the driving device. The one-machine double-well pumping unit has the characteristics of small machine type, convenient maintenance and convenient workover operation.

Description

One machine double well pumping unit

technical field

The utility model relates to a pumping unit for oil exploitation, in particular to a pumping unit with one machine and two wells.

Background technique

Affected by factors such as investment and environment, platform cluster well oil recovery technology is gradually favored by people. However, in terms of artificial lift, the method of one well and one machine of the conventional beam pumping unit is still being used, which requires high investment and high energy consumption. In order to reduce energy consumption and make full use of the small well spacing of cluster wells, there is also a form of simultaneous oil production in the oil field with one electric motor driving two adjacent oil wells, but the double well rigs used in the field mostly use tower structures, steel Large consumption, high fuselage, inconvenient maintenance and workover operations.

Utility model content

In order to reduce steel consumption and facilitate maintenance and workover operations, the utility model provides a one-machine double-well pumping unit. The one-machine double-well pumping unit has the characteristics of small size, easy maintenance and convenient well workover.

The technical scheme of the utility model is: a one-machine double-well pumping unit, including a guide wheel, a flexible rope, a bracket and a driving device, the upper end of the bracket is fixed to the guide wheel, wherein the bracket is arranged symmetrically with respect to the driving device, One end of the flexible rope bypasses the guide wheel at the upper end of the support and is connected to the corresponding sucker rod column, and the other end is connected to the driving device.

The driving device includes a drum driven by a forward and reverse rotating motor through a reducer, and one end of the flexible rope is wound on the drum.

The drive device includes a crank driven by a forward and reverse motor through a reducer, and one end of the flexible rope is tied to the end of the crank.

The winding directions of the two flexible ropes on the drum are opposite; the two flexible ropes on the crank are distributed at 180o when the two flexible ropes on the crank are at the dead point.

The large sprocket is fixed on the crank shaft of the above crank, the large sprocket pulls the small sprocket through the chain, and the balance weight is fixed on the small sprocket shaft.

The beneficial effects of the utility model are: the one-machine double-well pumping unit rotates forward and reverse through the drum, or rotates through the crank, so that one motor simultaneously drives the rod columns of two adjacent wells to reciprocate up and down, and the overall machine structure Minimize, effectively overcome or avoid the shortcomings of large steel consumption, high body, inconvenient maintenance and workover operations; at the same time, the use of a double-well pumping unit can save investment and reduce energy consumption. By adopting a secondary balance mechanism, it can Reduce the fluctuation range of the output torque of the reducer, and further reduce the installed power.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the structural representation of the second embodiment of the utility model;

FIG. 4 is a top view of FIG. 3 .

In the figure 1-guide wheel, 2-flexible rope, 3-bracket, 4-forward and reverse rotation motor, 5-brake, 6-reducer, 7-coupling, 8-roller, 9-roller bearing seat, 10- Seat, 11-guide wheel bearing seat, 12-crank bearing seat, 13-big sprocket, 14-crank, 15-main balance weight, 16-fixed pulley bearing seat, 17-fixed pulley, 18-secondary balance weight, 19-small sprocket, 20-small sprocket bearing seat.

Detailed ways

Below in conjunction with accompanying drawing, this utility model is further described:

As shown in Figures 1 to 4, the one-machine double-well pumping unit includes two embodiments.

Embodiment 1: As shown in Figure 1 and Figure 2, it includes a guide wheel 1, a flexible rope 2, a bracket 3, a forward and reverse rotation motor 4, a brake 5, a reducer 6, a coupling 7, a roller 8, and a roller bearing seat 9. The base 10, the forward and reverse rotation motor 4, the reducer 6, the drum 8, and the bracket 3 are installed on the base 10, the drive shaft of the drum 8 is connected with the reducer 6 through the coupling 7, and the reducer 6 The drive shaft is connected to the forward and reverse rotation motor 4, and a brake 5 is provided between the reducer 6 and the forward and reverse rotation motor 4; in addition, the improvement of the one-machine double-well pumping unit is that the above-mentioned bracket 3 is relatively 8 are arranged symmetrically, the upper ends of the two supports 3 respectively fix the guide wheel 1 through the guide wheel bearing seat 11, and the guide wheel 1 is located above the wellhead, one end of the two flexible ropes 2 is wound on the drum 8, and the other end is respectively wound around the two The guide wheel 1 at the upper end of the bracket 3 is connected to the sucker rod string on the corresponding side, and the two flexible ropes 2 on the drum 8 are wound in opposite directions. The oil rod string reciprocates up and down, and the sucker rod strings of each well are used to balance each other. During installation, the pumping unit base 10 is between two wells, so that 2 flexible ropes 2 on the drum correspond to the connection line of 2 wellhead centers up and down. This one-machine double-well pumping unit is suitable for long stroke and low stroke frequency.

Embodiment 2: As shown in Figure 3 and Figure 4, it includes a guide wheel 1, a flexible rope 2, a bracket 3, a forward and reverse rotation motor 4, a brake 5, a reducer 6, a crank bearing seat 12, a large sprocket 13, and a crank 14. Main balance weight 15, fixed pulley bearing seat 16 and fixed pulley 17, secondary balance weight 18, small sprocket 19 and small sprocket bearing seat 20, base 10, the forward and reverse rotation motor 4, bracket 3 , speed reducer 6, crank bearing housing 12, fixed pulley bearing housing 16, and small chain wheel bearing housing 20 are all installed on the base 10, fixed crank 14 on crank bearing housing 12, fixed pulley bearing housing 16 fixing fixed pulley 17, small chain Small sprocket 19 is fixed on the wheel bearing block 20, and the drive shaft of the forward and reverse rotation motor 4 is connected to the speed reducer 6 and the crankshaft successively, the large sprocket 13 is fixed on the crankshaft, and the main balance weight 15 and Crank 14, forward and reverse rotation motor 4 and speed reducer 6 are provided with brake 5; In addition, the improvement of this one-machine double-well pumping unit is that the fixed pulley 17 supported by the fixed pulley bearing seat 16 and the bracket 3 are all opposite to each other. Set symmetrically about the crankshaft. The upper end of the support 3 fixes the guide wheel bearing seat 11, the guide wheel bearing seat 11 fixes the guide wheel 1, and makes it be positioned at the top of the wellhead, one end of the flexible rope 2 is tied to the end of the above-mentioned crank 14, and the other end is sequentially Bypass the above-mentioned fixed pulley 17 and guide wheel 1 and connect with the sucker rod string on the corresponding side. The forward and reverse rotation motor 4 sequentially drives the reducer 6 and the crank 14 to rotate. The crank 14 drives the sucker rod column to reciprocate up and down through the flexible rope 2. The secondary balance weight 18 rotates, and the secondary balance weight 18 is used to reduce the output torque fluctuation range of the crankshaft. The two flexible ropes 2 connected to the crank of the pumping unit are guided by the fixed pulley 17. When they are at the dead point, the two flexible ropes 2 are distributed at 180o, and the sucker rod strings of the two wells are used to balance each other. When there is a well When shutting down, another oil well can continue normal production through the main balance weight. This embodiment is suitable for short stroke and high stroke frequency.

The one-machine double-well pumping unit rotates forward and reverse through the drum, or rotates through the crank, so that one pumping unit drives the rod columns of two adjacent wells to reciprocate up and down at the same time, making the model smaller, effectively overcoming or avoiding the Large amount of steel, high fuselage, inconvenient maintenance and workover operations; at the same time, the use of a double-well pumping unit can save investment and reduce energy consumption. By adopting a secondary balance mechanism, the output torque of the reducer can be reduced. The fluctuation range further reduces the installed power.

Claims (6)

1. machine twin-well oil-pumping machine; Comprise directive wheel (1), flexible strand (2), support (3) and drive unit; The upper end stator wheel (1) of support (3); It is characterized in that: described support (3) is symmetrical set with respect to drive unit, and described flexible strand (2) one ends are walked around the directive wheel (1) of support (3) upper end and linked to each other with corresponding rod string, and the other end is connected with drive unit.

2. a machine twin-well oil-pumping machine according to claim 1; It is characterized in that: described drive unit comprises the cylinder (8) that is driven through reducer (6) by forward and reverse electric rotating machine (4), and an end of above-mentioned flexible strand (2) is wrapped on the cylinder (8).

3. a machine twin-well oil-pumping machine according to claim 1 is characterized in that: described drive unit comprises the crank (14) that is driven through reducer (6) by motor (4), and an end of above-mentioned flexible strand (2) lies in the end of above-mentioned crank (14).

4. a machine twin-well oil-pumping machine according to claim 2 is characterized in that: 2 flexible strand (2) winding direction on the said cylinder (8) is opposite.

5. a machine twin-well oil-pumping machine according to claim 3 is characterized in that: described above-mentioned crank (14) 2 flexible strand in end (2) that lie in become 180o to distribute when the dead-centre position.

6. according to the described machine twin-well oil-pumping machine of claim 3, it is characterized in that: fixedly hinge wheel (13) is installed on the crank axle of above-mentioned crank (14), and hinge wheel (13) is through chain traction minor sprocket (19), stable equilibrium piece (18) on the chainlet wheel shaft.

Images