Rapid random balancing device for beam pumping units

Abstract

The present invention provides a beam pumping unit rapid random balancing device, which comprises a balancing block, a hydraulic bolt assembly, a lower slide rail, a screw and a screw seat, wherein the balancing block is connected to the upper slide rail through the hydraulic bolt assembly, the balancing block and the upper slide rail form a moving part, the upper slide rail is provided with the screw seat, the upper slide rail is sleeved on the lower slide rail, the lower slide rail fixes the upper slide rail, the screw is threaded into the screw seat, and the screw seat drives the upper slide rail to move. The beam pumping unit rapid random balancing device has no safety hazards such as high altitude, unstable operation, crank rotation, etc., and is fast and convenient, accurate in adjustment, does not stop the well, and has zero cost.

Description

Technical Field

[0001] The invention relates to the technical field of oil pumping unit balancing, in particular to a fast random balancing device for a beam pumping unit. Background Art

[0002] At present, oilfield pumping units are generally not equipped with a balancing operation platform. When balancing, the oil producer stands on the pumping unit reduction box or crank to operate. GB / T 31453-2015 "Oilfield Production System Energy Saving Monitoring Specifications" stipulates that during the operation of the beam pumping unit, the balance should be maintained between 80% and 110%. If it exceeds the range, the position of the balance block on the crank should be adjusted to meet the requirements of the specification. According to the oilfield enterprise standard Q / SH1025 0501 "Beam Pumping Unit (Crank) Balancing Operation Procedure", the balancing process can be found in Figure 1 . According to statistics on the time consumption of on-site balancing, it takes an average of about 75 minutes to complete the balancing operation. The oil workers stand on the reduction box or crank of the pumping unit. Removing and installing bolts and moving the balancing block are aerial operations. Due to the narrow crank and the lack of guardrails, the oil workers stand on the reduction box or crank of the pumping unit, which affects the quality and speed of the balancing operation. Our factory balances more than 300 units every year. Because the well is stopped for a long time for balancing, it is easy to cause sand stuck in the well, affecting the crude oil production by thousands of tons and increasing the operating costs.

[0003] At present, in the process of adjusting the balance block of the beam pumping unit, the following problems exist:

[0004] One is to rely on 3-4 workers to shake the balance block, and then use a crowbar to push the balance block to move. This method has the following problems: poor accuracy and controllability, and there is a risk of exceeding or insufficient target values ​​or even the balance block slipping when moving the balance block; the safety factor is low, there are many operators, and the space is narrow. If the operation is not coordinated well, there is a risk of injury; the operation time is long and the labor intensity is high; during the shaking and pushing process, the balance block often collides with the connecting rod, which can easily cause certain damage to the oil pumping equipment;.

[0005] Second, the lock block of the balance block is rusted and difficult to remove. When removing the lock block and bolts of the balance block, they cannot be removed manually due to rust, so they can only be cut off with gas cutting, which is time-consuming, labor-intensive and unsafe. Currently, the balance block is adjusted by shaking it or by using a crane, which is unsafe, time-consuming and labor-intensive. If the shaking balance block adjustment method is used, the oil producer stands on the crank, and there is a risk of the pumping unit brake failure and the crank suddenly turning; if the method of using a crane to move the balance block vertically is used to unload and tighten the balance block, the oil producer needs to always use a crane to lift the balance block, which not only increases the transportation cost, but also there is a risk of the balance block falling and the wire rope breaking.

[0006] Third, the load of the beam pump is uneven during the entire operation. For static load, during the upstroke, the donkey head suspension point needs to lift the sucker rod column and the oil column, and the motor has to pay a lot of energy at this time; during the downstroke, the sucker rod can fall by its own weight, not only does not require the motor to pay energy, but also does negative work on the motor. When there is a serious imbalance, the pump cannot be started, so it is necessary to reasonably solve the balance problem, eliminate negative work, and make the load of the motor uniform.

[0007] Fourth, when the pumping unit is installed and put into trial operation, it is difficult to achieve the best balance effect. With the change of downhole conditions and the adjustment of oil production parameters, the pumping unit will have new imbalances, and it is necessary to readjust the balance in a timely and accurate manner to make the pumping unit run more smoothly. If the balance is not adjusted in place, it is easy to cause the motor to bear uneven load during the up and down strokes of the pumping unit, resulting in a waste of electricity, reducing the service life of the motor, and affecting the normal operation of the machine, rod, and pump.

[0008] In the Chinese patent application with application number: CN201921889257.1, a ground balancing device for a walking beam pump is involved, including a support frame, which is characterized in that: one side of the support frame is fixedly connected to two symmetrical blocks, and the two symmetrical blocks are respectively fixedly connected to two hollow round rods, each of the two hollow round rods is respectively provided with a scale line, and the support frame is fixedly connected to an adjustment mechanism.

[0009] In the Chinese patent application with application number: CN201610301283.2, a method and device for balancing a beam pumping unit are involved, which relates to the technical field of beam pumping units. The method includes: obtaining various balancing parameters of the beam pumping unit, including: the weight of each crank balance block, the number of crank balance blocks, the initial position of the crank balance block, the ground efficiency of the beam pumping unit, and the bare rod stroke of the beam pumping unit; obtaining the average power of the upstroke and the average power of the downstroke of the beam pumping unit through an active power tester connected to the beam pumping unit; then determining a balancing coefficient; then determining a balancing distance; determining a target position according to the initial position of the crank balance block and the balancing distance, and adjusting the crank balance block to the target position.

[0010] The patent application with application number: PCT / CN2013 / 070078 relates to a walking beam type electric manual balancing oil pumping unit, comprising a power machine (1), a reducer (2), a crank (3), a connecting rod (4), a walking beam (5), a bracket (6), a donkey head (7) and a base (8), wherein the power machine, the reducer and the bracket are fixedly installed on the base, a crank is installed on the power output shaft of the reducer, the lower end of the connecting rod is hinged to the crank, the walking beam that can swing up and down is hinged to the top end of the bracket through the middle bracket bearing seat, the upper end of the connecting rod is hinged to the left part of the walking beam, the donkey head is fixedly installed on the right end of the walking beam, a rope hanger is installed on the donkey head, and a boom is installed on the left end of the walking beam.

[0011] The above existing technologies are greatly different from the present invention and fail to solve the technical problem we want to solve. For this reason, we have invented a new walking beam pumping unit fast random balancing device. Summary of the invention

[0012] The purpose of the present invention is to provide a fast and convenient, accurately adjusted, short-time well stopping, zero-cost, random balancing device for a beam pumping unit.

[0013] The object of the present invention can be achieved through the following technical measures: a fast random balancing device for a walking beam pumping unit, which includes a balancing block, an upper slide rail, a hydraulic bolt assembly, a lower slide rail, a screw and a screw seat. The balancing block is connected to the upper slide rail through the hydraulic bolt assembly. The balancing block and the upper slide rail form a moving part. The upper slide rail is provided with the screw seat. The upper slide rail is inserted into the lower slide rail. The lower slide rail fixes the upper slide rail. The screw is inserted into the screw seat through a thread. The screw seat drives the upper slide rail to move.

[0014] The purpose of the present invention can also be achieved by the following technical measures:

[0015] The rapid random balancing device for a beam pumping unit also includes a slide rail locking plate and a crank slot. The slide rail locking plate is located below the lower slide rail, and the slide rail locking plate is sleeved in the crank slot to fix the lower slide rail.

[0016] The walking beam pumping unit rapid random balancing device also includes a pin and a crank, the crank is provided with crank teeth, the pin is located on the lower slide rail, and the pin presses against the crank teeth of the crank to lock the lower slide rail.

[0017] The walking beam pumping unit rapid random balancing device also includes a bearing, a fixed bearing seat and a screw, the screw rod is inserted into the bearing, the bearing is installed on the fixed bearing seat, and the screw is connected to the lower slide rail to fix the screw rod.

[0018] The walking beam pumping unit rapid random balancing device also includes a bearing seat and a bolt. The outer end of the screw is provided with a screw square head, and the screw end of the screw square head is provided with the bearing seat. The bearing is installed in the bearing seat. The bearing seat is provided with a bolt hole. The bolt passes through the bolt hole and is connected to the upper top surface of the lower rail to fix the screw and the bearing.

[0019] The hydraulic bolt assembly comprises a stud, a balancing block seat and a stud seat. The stud is connected to the stud seat through threads, the balancing block is located on the balancing block seat, and the balancing block seat is seated on the stud.

[0020] The hydraulic bolt assembly also includes a hydraulic bolt cover and a nut. The hydraulic bolt cover and the nut are installed on the stud. The nut is threadedly connected to the upper end of the stud. The hydraulic bolt cover covers the nut and the stud.

[0021] The hydraulic bolt assembly also includes an oil nozzle, which is located on the side of the hydraulic bolt cover. The oil nozzle uses a hydraulic pump to inject hydraulic oil to press the hydraulic bolt cover onto the balance block seat to complete the connection between the balance block and the upper slide rail.

[0022] The beam pumping unit fast random balancing device of the present invention aims at the problems of high-altitude operation, time-consuming and labor-intensive, long well stoppage time and high cost in the current crank balancing method of beam pumping units. The purpose of the present invention is to provide a beam pumping unit crank balancing device which has no hidden safety hazards such as high altitude, unstable operation and crank rotation, and is fast, convenient, accurate in adjustment, short-time well stoppage and zero cost. Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) Reduce labor intensity, eliminate safety hazards, and shorten the adjustment time by more than 60 minutes compared with the original balancing method, saving time and effort and improving production efficiency.

[0024] (2) The device has a simple structure and is easy to install. The hydraulic bolts are used to disassemble and assemble the balancing block, and the sliding rail principle is used to move the balancing block, which is fast, stable and firm.

[0025] (3) The device is fixed on the crank of the oil pump, and no matching tools are required for adjustment. It is easy to operate and is less affected by the environment.

[0026] (4) The manufacturing and installation costs are low, and the balance can be adjusted quickly at any time, saving a lot of electricity costs. It not only extends the life of the pumping unit and the motor, but also avoids the well being left lying due to long downtime, thus saving operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a balancing operation process diagram in the prior art;

[0028] Figure 2A side view of a specific embodiment of the rapid random balancing device for a beam pumping unit of the present invention;

[0029] Figure 3 It is a front view of a specific embodiment of the rapid random balancing device for a beam pumping unit of the present invention;

[0030] Figure 4 In a specific embodiment of the present invention Figure 3 The cross-section of the middle b plane;

[0031] Figure 5 In a specific embodiment of the present invention Figure 3 The cross-section of the middle a plane;

[0032] Figure 6 In a specific embodiment of the present invention Figure 3 Cross-section of the middle c-plane. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations and / or combinations thereof.

[0035] The beam pumping unit rapid random balancing device of the present invention has the following technical features:

[0036] 1. The balancing method of the crank of the beam pumping unit is to drive the screw to adjust the position of the balancing block.

[0037] 2. The fixing bolts of the balance block are changed to hydraulic bolts.

[0038] 3. To prevent the balance block from falling off, use pins to fix the slide rail and balance block.

[0039] 4. Balance adjustment is changed from multi-person operation to single-person operation.

[0040] 5. Pre-assemble the quick random balancing device of the beam pumping unit and install it on the crank as a whole.

[0041] 6. Adjust and check according to the balance.

[0042] 7. Save on various tools and complete adjustments quickly.

[0043] 8. Ground operation, safe and reliable.

[0044] 9. Modular installation and operation make the device easy and quick to dismantle.

[0045] The following are several specific embodiments of the present invention.

[0046] Embodiment 1:

[0047] In a specific embodiment 1 of the present invention, Figure 2-6 The figure shows the structure of the rapid random balancing device for the beam pumping unit of the present invention.

[0048] The balancing block 1 is located on the upper slide rail 3 and connected to the upper slide rail 3 through the hydraulic bolt assembly 2. The balancing block 1 and the upper slide rail 3 form a moving part. The upper slide rail 3 is provided with a screw seat 22, and the upper slide rail 3 is sleeved on the lower slide rail 4. The lower slide rail 4 plays the role of fixing the upper slide rail 3. The screw 19 is threaded into the screw seat 22, and the screw seat 22 plays the role of driving the upper slide rail 3 to move. The lower slide rail 4 is provided with a slide rail locking plate 20, and the slide rail locking plate 20 is sleeved in the crank groove 21 to fix the lower slide rail 4. The lower slide rail 4 is provided with a pin 7, which is threadedly connected. The upper pin 7 is pressed against the crank teeth 8 of the crank 10 to lock the lower slide rail 4. The bearing seat 17 at one end of the screw 19 with the screw square head 6 is provided with a bolt port, and the bolt 5 is connected to the lower slide rail 4 through the bolt port of the bearing seat 17. The screw 19 is inserted into the bearing 18, and the bearing 18 is installed in the bearing seat 17. The bolt 5 plays the role of fixing the screw 19. At the other end of the screw 19 , the screw 19 passes through the screw seat 22 and is inserted into the bearing 18 . The bearing 18 is installed in the fixed bearing seat 23 . The screw 9 is connected to the lower sliding rail 4 to fix the screw 19 .

[0049] Figure 2 for Figure 3 Side view of Figure 2 It includes the main components of the balance block 1, hydraulic bolt assembly 2, bolt 5, bearing seat 17, bearing 18, screw 19, slide rail lock plate 20, and crank groove 21. The slide rail lock plate 20 is inserted into the crank groove 21 and fixed by the pin 7. The screw 19 is equipped with the bearing 18, and the bearing 18 is installed on the bearing seat 17. The bolt 5 is connected to the slide rail 4 through the bearing seat 17 to fix the bearing seat 17 and the bearing 18. The outer end of the screw 19 is a screw square head 6. Among them, the hydraulic bolt assembly 2 Figure 4 is the cross-sectional view of b, Figure 4It includes hydraulic bolt cover 11, nut 12, stud 13, oil nozzle 14, balance block seat 15, and stud seat 16. The hydraulic bolt assembly 2 plays the role of connecting and fixing the balance block 1. When replacing or adding the balance block 1, open the oil nozzle 14 to release the pressure, rotate the hydraulic bolt cover 11, remove the nut 12, remove the hydraulic bolt cover 11, insert the stud 13 into the bolt hole of the balance block seat 15, then install the nut 12 and the hydraulic bolt cover 11, and use the hydraulic pump to pressurize the oil nozzle 14 to tighten it. The replacement or addition of the balance block 1 is completed.

[0050] The online power balance adjustment software automatically screens out pumping wells with unqualified power balance, issues early warnings in the form of charts, and automatically calculates the balance radius and position, generates adjustment plans online, and predicts the adjusted power parameters, torque curve, and power saving effects. Then, technical management personnel formulate the best balance adjustment plan by analyzing the downhole conditions of the oil wells and the impact of the working status of the pumping unit on the balance. When adjusting the balance according to the plan, first, after the monitoring center remotely shuts down the unit, the brake is applied to keep the pumping unit crank 10 in a horizontal position. Secondly, the screw square 6 is rotated with a special tool to adjust the balance block 1 to the automatically calculated balance radius and position. Finally, the brake is released, and the monitoring center remotely starts the unit to check the PCS balance data and analyze the adjustment effect.

[0051] The present invention is composed of a balancing block 1, a hydraulic bolt assembly 2, an upper slide rail 3, a lower slide rail 4, a bolt 5, a screw square head 6, a pin 7, a crank tooth 8, a screw 9, a crank 10, a hydraulic bolt cover 11, a nut 12, a stud 13, an oil nozzle 14, a balancing block seat 15, a stud seat 16, a bearing seat 17, a bearing 18, a screw 19, a slide rail lock plate 20, a crank groove 21, a screw seat 22, a fixed bearing seat 23, and the like.

[0052] The balancing part of the present invention comprises a balancing block 1, a hydraulic bolt assembly 2, and an upper slide rail 3. The hydraulic bolt assembly 2 comprises a hydraulic bolt cover 11, a nut 12, a stud 13, an oil nozzle 14, a balancing block fixing seat 15, and a stud seat 16.

[0053] The driving part of the present invention comprises a screw square head 6, a balancing block fixing seat 15, a screw 19, and an upper slide rail screw seat 22.

[0054] The fixing part of the present invention comprises a lower sliding rail 4, a bolt 5, a pin 7, a screw 9, a lower sliding rail fixing seat 20, and a fixing bearing seat 23.

[0055] The present invention comprises a crank part, a crank 10 , crank teeth 8 , and a crank groove 21 .

[0056] The balancing part of the present invention drives the dynamic balancing block 1 by moving the upper slide rail 3, and the driving part drives the upper slide rail screw seat 22 to move the upper slide rail 3 by the screw 19. The upper slide rail 3 is fixed on the lower slide rail 4, and the lower slide rail 4 is fixed on the crank groove 21 of the crank part.

[0057] Embodiment 2:

[0058] In a specific embodiment 2 of the present invention, the device is installed. First, the oil pump is stopped at the top dead center according to the shutdown operating procedures, and the rust residue on the surface of the crank 10 and the crank groove 21 is removed. The walking beam oil pump is lifted by a crane for rapid random balancing. The slide rail locking plate 20 is inserted into the crank groove 21, and the center of gravity of the moving balance block 1 is adjusted to a preset balance radius. Then, the pin 7 is tightened and pushed onto the crank tooth 8, and the installation is completed.

[0059] The beam pumping unit rapid random balancing device is a pre-assembled rapid random balancing device, wherein the stud 13 is threadedly connected to the stud seat 16, the balancing block seat 15 of the balancing block 1 is seated on two studs 13, the hydraulic bolt cover 11 and the nut 12 are installed on the stud 13 to form a hydraulic bolt assembly 2, and the oil nozzle 14 is pumped with hydraulic oil by a hydraulic pump to press the hydraulic bolt cover 11 on the balancing block seat 15, thereby completing the connection of the upper slide rail 3 of the balancing block 1. The upper slide rail 3 and its screw seat 22 and screw 19 are sleeved on the lower slide rail 4, the end of the screw square head 6 is installed with a bearing seat 17 and a bearing 18 and fixed with a pressure plate 5, and the other end of the screw 19 is installed with a bearing 18 and fixed with a bearing seat 23, thereby completing the connection of the upper slide rail 3 and the lower slide rail 4, thereby forming a rapid random balancing device. Start pumping, measure the current to check the adjustment effect, and the system checks whether the power balance is between 80% and 110%, and fills in the information.

[0060] Embodiment 3:

[0061] In a specific embodiment 3 of the present invention, according to GB / T 31453-2015 "Energy-saving Monitoring Specification for Oilfield Production Systems", during the operation of the beam pumping unit, the balance degree should be maintained between 80% and 110%. If it exceeds the range, the position of the balance block on the crank should be adjusted to meet the specification requirements.

[0062] For pumping wells with a balance degree higher than 110%, calculate the balance radius.

[0063] According to the shutdown operation procedures, cut off the power, stop the well, brake the machine, stop the crank in the horizontal position, and calculate the balance radius.

[0064] Use the crank to turn the screw square head 6, turn the screw 19 clockwise, and move the balance block 1 inward. Start pumping, measure the current to check the adjustment effect, check whether the power balance is between 80% and 110%, and fill in the information.

[0065] Embodiment 4:

[0066] In a specific embodiment 4 of the present invention, according to GB / T 31453-2015 "Energy-saving Monitoring Specification for Oilfield Production Systems", during the operation of the beam pumping unit, the balance degree should be maintained between 80% and 110%. If it exceeds the range, the position of the balance block on the crank should be adjusted to meet the specification requirements.

[0067] For pumping wells with a balance degree lower than 80%, calculate the balance radius.

[0068] According to the shutdown operation procedures, cut off the power, stop the well, brake the machine, stop the crank in the horizontal position, and calculate the balance radius.

[0069] Use the crank to turn the screw square head 6, turn the screw 19 counterclockwise, and move the balance block 1 outward. Start pumping, measure the current to check the adjustment effect, check whether the power balance is between 80% and 110%, and fill in the information.

[0070] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0071] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

Claims

1. The beam pumping unit fast random balancing device is characterized by: The beam pumping unit fast random balancing device comprises a balancing block, an upper slide rail, a hydraulic bolt assembly, a lower slide rail, a screw and a screw seat. The balancing block is connected to the upper slide rail through the hydraulic bolt assembly. The balancing block and the upper slide rail form a moving part. The upper slide rail is provided with the screw seat. The upper slide rail is sleeved on the lower slide rail. The lower slide rail fixes the upper slide rail. The screw is threaded into the screw seat. The screw seat drives the upper slide rail to move. The beam pumping unit rapid random balancing device also includes a slide rail locking plate and a crank slot, wherein the slide rail locking plate is located below the lower slide rail and the slide rail locking plate is inserted into the crank slot to fix the lower slide rail; The beam pumping unit rapid random balancing device also includes a pin and a crank, the crank is provided with crank teeth, the pin is located on the lower slide rail, and the pin presses against the crank teeth of the crank to lock the lower slide rail.

2. The rapid random balancing device for beam pumping units according to claim 1 is characterized in that: The walking beam pumping unit rapid random balancing device also includes a bearing, a fixed bearing seat and a screw, the screw rod is inserted into the bearing, the bearing is installed on the fixed bearing seat, and the screw is connected to the lower slide rail to fix the screw rod.

3. The rapid random balancing device for beam pumping units according to claim 1 is characterized in that: The walking beam pumping unit rapid random balancing device also includes a bearing seat and a bolt. The outer end of the screw is provided with a screw square head, and the screw end of the screw square head is provided with the bearing seat. The bearing is installed in the bearing seat. The bearing seat is provided with a bolt hole. The bolt passes through the bolt hole and is connected to the upper top surface of the lower rail to fix the screw and the bearing.

4. The rapid random balancing device for beam pumping units according to claim 1 is characterized in that: The hydraulic bolt assembly comprises a stud, a balancing block seat and a stud seat. The stud is connected to the stud seat through threads, the balancing block is located on the balancing block seat, and the balancing block seat is seated on the stud.

5. The rapid random balancing device for beam pumping units according to claim 4 is characterized in that: The hydraulic bolt assembly also includes a hydraulic bolt cover and a nut. The hydraulic bolt cover and the nut are installed on the stud. The nut is threadedly connected to the upper end of the stud. The hydraulic bolt cover covers the nut and the stud.

6. The rapid random balancing device for beam pumping units according to claim 5 is characterized in that: The hydraulic bolt assembly also includes an oil nozzle, which is located on the side of the hydraulic bolt cover. The oil nozzle uses a hydraulic pump to inject hydraulic oil to press the hydraulic bolt cover onto the balance block seat to complete the connection between the balance block and the upper slide rail.

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