CN102094601A - Novel oil pumping unit for cluster well - Google Patents

Abstract

The invention discloses a novel cluster well pumping unit, which comprises a motor, a belt transmission mechanism, a reducer, a crank and a derrick. The slider is installed on the rod, and the slider slides in the guide rail. The two ends of the slider are connected with multiple rows of chains. The multiple rows of chains drive the chain rod connector and the sucker rod to reciprocate up and down through the guide wheel, the derrick guide wheel, the sky wheel and the sucker rod.

Description

New cluster well pumping unit

1. Technical field

The invention relates to the fields of oil exploitation and coal bed gas exploitation equipment, in particular to a novel cluster well pumping unit.

2. Background technology

In recent years, the application of cluster wells in oil and gas fields and coalbed methane exploitation has developed rapidly in my country. The characteristics of cluster well pumping technology: it can meet some special needs in drilling engineering, such as emergency wells for subduing blowout; it can speed up the exploration and development of oil and gas fields, and save drilling costs; it is conducive to saving the land area occupied by oil fields and better protecting cultivated land and save energy; facilitate the centralized management of oil wells after well completion, reduce the gathering and transportation process, save investment in manpower, money, and materials, and then improve the economic benefits of low-permeability oil and gas field development, etc. But the mechanical oil recovery technology of cluster wells is still very backward, and there is no feasible cluster well pumping unit so far. At present, oilfields and coalbed methane mining fields still use single-machine single-production production mode. The equipment investment and normal operation costs of oil wells are very high, resulting in low economic benefits of oil well production, and some are even close to zero. The main reason is that stand-alone mining can no longer meet the characteristics of cluster wells that share platforms with multiple wells.

How to make full use of the characteristics of small well spacing of cluster wells to realize simultaneous oil production by one motor to drive multiple adjacent oil wells, meet the needs of cluster well oil production technology to the greatest extent, save power consumption, and improve the use of oil production equipment and oil production systems Life and pumping efficiency, many experts and scholars at home and abroad have conducted in-depth research and obtained related achievements. At present, there have been some research results on the special technology of multi-well linkage production for cluster wells in China, but there are still many technical problems in the design and reliability of production schemes, so it has not been really applied in practice.

3. Contents of the invention

The technical problem to be solved by the present invention is to provide a new type of cluster well pumping unit for the existing problems in the above-mentioned cluster well production technology, which realizes the simultaneous oil production of multiple adjacent oil wells driven by one motor, and its structure is compact , Safe and reliable when working, good balance, and remarkable energy-saving effect.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a novel cluster well pumping unit, comprising a motor, a belt transmission mechanism connected to and driven by the motor, and a belt transmission mechanism connected to the belt transmission mechanism. The reducer on the output shaft, the crank connected to the output shaft of the reducer and driven by the reducer, the connecting rod connected to the crank, and the derrick are characterized in that: the sliding rod connected with the connecting rod The block slides in the guide rail, and multiple rows of chains are installed at both ends of the slider. The number of rows of the multi-row chains is the same as the number of wellheads. connect. The slider is driven to slide on the guide rail through the movement of the crank and the connecting rod, and the multi-row chains connected to the slider and moving together with the slider work through the guide wheel, the derrick guide wheel, the sky wheel drive chain rod connector and the sucker rod. Up and down reciprocating motion.

The multiple rows of chains may be multiple rows of steel ropes.

The guide wheel, the derrick guide wheel and the sky wheel can be sprockets.

The guide rail is a sliding guide rail or a rolling guide rail.

The slider adopts a slider or a roller structure.

Compared with the prior art, the present invention has the following advantages:

1. High system efficiency. Realize one motor to drive multiple adjacent oil wells to produce oil at the same time.

2. Dual balance system. The balance of the pumping unit is achieved by using the oil well mutual balance method, and the balance effect is very good.

3. The whole machine is light in weight. The whole pumping unit does not have additional balance weight.

4. Low installed power. The power required for oil production by the new cluster well pumping unit is only used to overcome the motion resistance and unbalanced part of the paired oil well, and the required power is very small.

5. Energy saving and consumption reduction. Compared with single-unit single-production, single-unit multi-production has greatly reduced the energy consumption of the pumping unit due to the improvement of system efficiency, the significant reduction of installed power, and the small fluctuations in the load of the pumping unit.

6. Low oil recovery cost. Due to the reduction in weight, multiple oil wells share a set of power plant, the investment cost of equipment is low, and the cost of oil production is greatly reduced.

7. The transportation and installation costs of the equipment are low.

4. Description of drawings

Fig. 1 is a schematic structural view of the novel cluster well pumping unit of the present invention.

Explanation of reference signs

5. Specific implementation

As shown in Figure 1, the present invention comprises electric motor 1, belt transmission mechanism 2, speed reducer 3, crank 4, connecting rod 5, slide block 6, guide rail 7, multi-row chain 8, guide wheel 9, derrick guide wheel 10, derrick 11. Chain rod connector, sucker rod 12 and sky wheel 13, wherein the output shaft of the motor 1 is connected with the input shaft of the belt transmission mechanism 2 through a connection key, the large pulley of the belt transmission mechanism 2 is connected with the speed reducer 3 The input shaft is connected through the connecting key, and the output shaft of the speed reducer 3 is connected with the crank 4 through the connecting key, and the crank 4 can rotate synchronously with the output shaft of the speed reducer 3 .

In this embodiment, one end of the crank 4 is connected to one end of the connecting rod 5 through a pin shaft, and the other end of the crank 4 is connected to the output shaft of the reducer 3 through a connecting key.

The slider 6 is arranged in the guide rail 7 and slides along the guide rail 7 . The guide rail 7 is a sliding guide rail or a rolling guide rail. The slide block 6 is connected with one end of the connecting rod 5 through a pin shaft.

Multiple rows of chains 8 are installed at both ends of the slide block 6 . Multiple rows of chains 8 can be multiple rows of steel ropes.

Derrick guide wheel 10 and sky wheel 13 are fixed on the derrick 11.

The working process of the present invention is: the motor 1 transmits the power to the input shaft of the reducer 3 through the belt transmission mechanism 2, after the deceleration of the reducer 3, the output shaft of the reducer 3 drives the crank 4 to rotate; the crank 4 drives the connecting rod 5 Plane movement, the slider 6 connected to the connecting rod 5 reciprocates left and right on the guide rail 7, and then drives the multiple rows of chains 8 to reciprocate left and right together with the slider 6, and the multiple rows of chains 8 pass through the guide wheel 9 and the derrick guide wheel 10 and the sky wheel 13 drive the chain rod connector and the sucker rod 12 to reciprocate up and down.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of protection of the scheme.

Claims (5)

1. novel cluster well oil extractor, comprise motor (1), the belt gear (2) that is connected and is driven by it with described motor (1), be connected the reducer (3) on the output shaft of described belt gear (2), be connected on the output shaft of described reducer (3) and drive the crank (4) that rotates by this reducer (3), be connected the connecting rod (5) on the crank (4), and derrick (11), it is characterized in that: the slide block (6) that is connected with described connecting rod (5) slides in guide rail (7), the two ends of slide block (6) are equipped with many row's chains (8), row's number of many row's chains (8) is identical with the well head number, arranges chain (8) by directive wheel (9) more, derrick directive wheel (10), head sheave (13) is connected with sucker rod (12) with the chain rod connector.Motion driving sliding block (6) by crank (4) and connecting rod (5) goes up at guide rail (7) and slides, and is connected that slide block (6) is gone up and pumps by directive wheel (9), derrick directive wheel (10), head sheave (13) drive chain rod connector and sucker rod (12) with many rows chain (8) of slide block (6) motion.

2. according to the described novel cluster well oil extractor of claim 1, it is characterized in that: described many row's chains (8) can be many row's steel cables.

3. according to the described novel cluster well oil extractor of claim 1, it is characterized in that: described directive wheel (9), derrick directive wheel (10) and head sheave (13) can be sprocket wheels.

4. according to the described novel cluster well oil extractor of claim 1, it is characterized in that: described guide rail (7) is rail plate or rolling guide.

5. according to the described novel cluster well oil extractor of claim 1, it is characterized in that: described slide block (6) adopts slide block or roller structure.

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