CN117233022A - Experimental device and method for researching eccentric wear loss of sucker rod - Google Patents
Experimental device and method for researching eccentric wear loss of sucker rod Download PDFInfo
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- CN117233022A CN117233022A CN202311495378.9A CN202311495378A CN117233022A CN 117233022 A CN117233022 A CN 117233022A CN 202311495378 A CN202311495378 A CN 202311495378A CN 117233022 A CN117233022 A CN 117233022A
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- 238000000034 method Methods 0.000 title abstract description 6
- 238000004088 simulation Methods 0.000 claims abstract description 34
- 238000002474 experimental method Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 56
- 239000012530 fluid Substances 0.000 claims description 29
- 238000007599 discharging Methods 0.000 claims description 2
- 238000013178 mathematical model Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The invention discloses an experimental device and method for researching eccentric wear loss of a sucker rod, and belongs to the technical field of sucker rod experimental equipment; the simulation shaft is arranged in the barrel body through the first clamp holder, the simulation rod column is connected with the bracket through the second clamp holder, the simulation rod column is connected with the reciprocating motion system, the reciprocating motion in the oil pipe can be simulated, and the simulation rod column simulates the transverse stress through the stress system. The experimental method comprises the following steps: the experimental device is assembled for experiment, the net weights of the simulated shaft and the simulated rod string before and after the experiment are measured, and the loss, the eccentric wear loss rate and the eccentric wear loss rate of the simulated shaft and the simulated rod string are calculated. The invention can convert complex underground structure into indoor experiment, simulate the sucker rod stress and the eccentric wear condition generated after the stress under the actual working condition, and quantitatively characterize the eccentric wear consumption of the underground sucker rod.
Description
Technical Field
The invention belongs to the technical field of oil pumping experimental equipment, and particularly relates to an experimental device and method for researching eccentric wear loss of an oil pumping rod.
Background
The stress state of a sucker rod string, which is one of the three pumping equipment components, is receiving a great deal of attention. The sucker rod is deformed under the action of various forces in the pit, so that the sucker rod and an oil pipe are subjected to eccentric wear, and the sucker rod and the oil pipe become the main reasons for the production stagnation of an oil field at one time, so that the working condition of an elongated rod column under the stress state is very necessary to be studied by holding the rod and managing the pipe by an eccentric grinder. At present, research on the eccentric wear of the sucker rod is mainly carried out by mathematical model derivation and software simulation, and quantitative and accurate characterization of the eccentric wear consumption cannot be carried out. In view of the above, the invention develops a device and a method for researching the uneven wear loss of the sucker rod in a shaft, quantitatively characterizes the uneven wear loss of the sucker rod in the shaft by an experimental method, measures the uneven wear condition under different working conditions, and can accurately quantitatively characterize the uneven wear loss of the sucker rod.
Disclosure of Invention
The invention aims to provide an experimental device and method for researching the eccentric wear loss of a sucker rod, and aims to solve the technical problem that the eccentric wear loss of the sucker rod and a shaft cannot be quantitatively represented through mathematical model derivation and software simulation in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the experimental device comprises a barrel body capable of containing fluid, a simulation shaft for simulating an oil pipe and a simulation rod column for simulating an oil pumping rod, wherein a liquid inlet hole is formed in the bottom of the barrel body, a liquid outlet hole is formed in the top of the barrel body, and fluid simulating produced liquid can be conveyed into the barrel body through the liquid inlet hole and the liquid outlet hole; the simulated shaft is arranged on the inner wall of the barrel body through a first clamp holder, the simulated rod column is connected with the bracket through a second clamp holder, the lower end of the simulated rod column extends into the simulated shaft and can move up and down along the inner cavity of the simulated shaft, and the simulated rod column is connected with the reciprocating system and used for simulating the reciprocating motion of the sucker rod; and the simulation rod column is provided with a stress system for simulating transverse stress born by the sucker rod.
Preferably, the barrel is upright on the base, the support comprises four support columns, the reciprocating motion system is arranged on the upper portions of the four support columns, the four support columns are two main support columns and two auxiliary support columns respectively, the two main support columns are arranged on the outer side of the barrel and the bottom of the main support columns is fixed on the base, the two auxiliary support columns are arranged above the barrel, and the second clamp holder and the stress system are arranged on the lower portions of the auxiliary support columns.
Preferably, the first holder includes left clamping part, right clamping part, goes up slide rail and lower slide rail, go up slide rail and lower slide rail and be fixed in respectively on the staving inner wall, left side clamping part and right clamping part respectively centre gripping simulate the left and right sides of pit shaft, the upper and lower both ends of left side clamping part and right clamping part respectively with last slide rail and lower slide rail sliding fit, can adjust the position of simulating the pit shaft in the horizontal direction.
Preferably, the second clamping device comprises an upper clamping part and a lower clamping part, the upper clamping part and the lower clamping part are respectively connected with the lower part of the auxiliary supporting column, and the upper clamping part and the lower clamping part are used for clamping the upper end and the lower end of the simulation rod column; the stress system is arranged between the two auxiliary support columns, and between the upper clamping part and the lower clamping part.
Preferably, the stress system comprises a fixing rod, an adjusting bolt and a stress spring, wherein the adjusting bolt and the stress spring are horizontally arranged, the fixing rod is arranged between two auxiliary supporting columns, the upper end and the lower end of the fixing rod are respectively connected with the upper clamping part and the lower clamping part, the adjusting bolt is in threaded fit with the middle part of the fixing rod, one end of the stress spring is connected with the adjusting bolt, and the other end of the stress spring is connected with the simulation rod column.
Preferably, the reciprocating motion system is a motion motor, the output end of the motion motor is connected with the analog pole, four corners of the motion motor are respectively provided with guide holes matched with four support columns, and the upper parts of the four support columns are used as guide rails for the motion motor to move up and down; the motion motor is connected with the control panel and used for controlling the motion speed, the reciprocating motion amplitude and the motion frequency of the simulated pole.
Preferably, the liquid inlet and the liquid outlet of the barrel body are respectively connected with a liquid supply device, and the liquid supply device is controlled by a controller and is used for controlling the flowing state of the fluid in the barrel body.
The invention also provides an experimental method for researching the eccentric wear loss of the sucker rod, which comprises the following steps:
assembling the experimental device;
preparing fluid according to the simulated produced liquid requirement, connecting a liquid inlet hole and a liquid outlet hole, and setting the flow speed and the flow rate of the fluid according to the experimental requirement;
lowering the simulated rod column to the appointed depth of the simulated shaft, setting a reciprocating motion system according to experimental requirements, and setting the speed, amplitude and frequency of reciprocating motion of the simulated rod column;
when the fluid flows out of the liquid discharge hole, starting a reciprocating motion system to enable the simulated rod column to start reciprocating motion;
after waiting for a specified time t, closing the reciprocating motion system, stopping the liquid inlet of the barrel body, discharging the internal fluid, taking out the simulated rod column and the simulated shaft, and measuring the net weight G Barrel 2 、G Rod 2 Obtaining corresponding experimental data; calculating to obtain the loss of the simulated rod string and the simulated shaft, the eccentric wear loss rate and the eccentric wear loss rate;
after the experiment is finished, all power supplies are cut off, and the experimental device is cleaned.
According to the recorded experimental data, calculating the loss of the simulated rod string and the simulated shaft by using the formula (1) and the formula (2):
（1）
（2）
wherein: g (G) Rod -simulating the amount of loss of the stem;
∆G cartridge -simulating the loss of the wellbore;
calculating the eccentric wear loss rate according to the formula (3) and the formula (4):
（3）
（4）
wherein: s is S Cartridge -simulating a loss rate of the wellbore;
S rod -simulating the loss rate of the rod string;
calculating the partial wear rate according to the formula (5) and the formula (6):
（5）
（6）
wherein: η (eta) Cartridge -simulating a loss rate of the wellbore;
η rod -simulating the loss rate of the rod string.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in: compared with the prior art, the invention simulates the sucker rod by simulating the well shaft to simulate the oil pipe and the sucker rod column, and introduces fluid flowing from bottom to top into the barrel body to simulate the produced liquid, so that a complex underground structure can be converted into an indoor experiment, the stress of the sucker rod under the actual working condition and the eccentric wear condition generated after the stress can be simulated, the actual flowing state of the underground produced liquid and the influence of the fluid in the barrel body on the well shaft wall and the sucker rod can be simulated, the eccentric wear condition under different working conditions can be measured by adjusting the stress of the sucker rod, different movement speeds, different frequencies and different amplitudes, and further the eccentric wear of the underground sucker rod can be quantitatively represented, and the loss quantity, the loss rate and the loss degree of the sucker rod can be calculated. The invention can be combined with theoretical mathematical model and simulation software simulation, and verifies theoretical loss, loss rate and loss rate obtained by theoretical and simulation calculation, so that the research is more perfect and more practical, and the invention has more representative significance, thereby providing accurate theory and technical guidance for field application.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of an experimental apparatus for studying wear loss of a sucker rod according to an embodiment of the present invention;
FIG. 2 is a side view of the experimental setup of FIG. 1;
FIG. 3 is a top view of the experimental setup of FIG. 1;
FIG. 4 is a schematic view of the structure of a first gripper in an embodiment of the present invention;
FIG. 5 is a schematic diagram of a force system in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram showing the cooperation of the fixing holes on the upper and lower clamping portions with the dummy pole according to the embodiment of the present invention;
in the figure: the device comprises a base, a 2-liquid inlet, a 3-barrel, a 4-first mounting hole, a 5-left clamping part, a 6-liquid discharge hole, a 7-second mounting hole, an 8-lower clamping part, a 9-upper clamping part, a 10-motion motor, a 11-main support column, a 12-auxiliary support column, a 13-fixing hole, a 14-adjusting bolt, a 15-simulation rod column, a 16-upper sliding rail, a 17-right clamping part, a 18-lower sliding rail, a 19-stress spring and a 20-fixing rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, the experimental device for researching the eccentric wear loss of a sucker rod provided by the invention comprises a barrel body 3 capable of containing fluid, a simulation shaft (not shown in the figure) for simulating an oil pipe and a simulation rod column 15 for simulating the sucker rod, wherein the bottom of the barrel body 3 is provided with a liquid inlet hole 2, the top of the barrel body is provided with a liquid outlet hole 6, and fluid simulating produced liquid can be conveyed into the barrel body 3 through the liquid inlet hole 2 and the liquid outlet hole 6; the simulated shaft is arranged on the inner wall of the barrel body 3 through a first clamp holder, the simulated rod column 15 is connected with the bracket through a second clamp holder, the lower end of the simulated rod column 15 extends into the simulated shaft and can move up and down along the inner cavity of the simulated shaft, and the simulated rod column 15 is connected with a reciprocating system and is used for simulating the reciprocating motion of the sucker rod; the simulation pole 15 is provided with a stress system for simulating the transverse stress born by the sucker rod. The oil pipe is simulated through the simulation shaft, the sucker rod is simulated through the simulation rod column, the fluid flowing from bottom to top is introduced into the barrel body to simulate the produced liquid, the actual flowing state of the produced liquid in the pit and the influence of the produced liquid on the wall of the shaft and the sucker rod are simulated through the fluid in the barrel body, and the complex underground structure can be converted into an indoor experiment by the scheme, so that the stress of the sucker rod under the actual working condition and the eccentric wear condition generated after the stress can be simulated.
As a preferred structure, as shown in fig. 1-3, the tub 3 is erected on the base 1, the support comprises four support columns, the reciprocating motion system is disposed on the upper portions of the four support columns, the four support columns are two main support columns 11 and two auxiliary support columns 12 respectively, the two main support columns 11 are disposed on the outer side of the tub 3, the bottom of the main support columns is fixed on the base 1, the two auxiliary support columns 12 are disposed above the tub 3, and the second clamp and the stress system are disposed on the lower portions of the auxiliary support columns 12. The reciprocating system is a motion motor 10, the output end of the motion motor 10 is connected with a simulation pole 15, four corners of the motion motor 10 are respectively provided with guide holes matched with four support poles, and the upper parts of the four support poles are used as guide rails for the motion motor 10 to move up and down; the two auxiliary supporting columns 12 serve as cantilevers, and cooperate with the two main supporting columns 11 to provide guiding of up-and-down reciprocating motion for the sucker rod, and no motion in other directions is generated.
And the motion motor 10 controls the motion speed, the reciprocating motion amplitude and the motion frequency of the analog pole 15 through the control panel.
In one embodiment of the present invention, as shown in fig. 4, the first gripper includes a left gripping portion 5, a right gripping portion 17, an upper sliding rail 16 and a lower sliding rail 18, the upper sliding rail 16 and the lower sliding rail 18 are respectively fixed on the inner wall of the barrel 3, the left gripping portion 5 and the right gripping portion 17 respectively grip the left and right sides of the simulated wellbore, and the upper and lower ends of the left gripping portion 5 and the right gripping portion 17 respectively slidably cooperate with the upper sliding rail 16 and the lower sliding rail 18, so that the position of the simulated wellbore can be adjusted in the horizontal direction. In a specific design, the simulated shaft can be cylindrical or cuboid, and the current situation of the opposite inner walls of the left clamping part 5 and the right clamping part 17 is matched with the appearance of the simulated shaft. The simulated shaft is clamped by the left clamping part 5 and the right clamping part 17, after the position of the simulated shaft is adjusted, the left clamping part 5 and the right clamping part 17 are respectively fixed on the upper sliding rail 16 and the lower sliding rail 18 through fastening bolts, the simulated shaft is further fixed at a designated position, and the left clamping part 5 and the right clamping part 17 are correspondingly provided with first mounting holes 4 matched with the fastening bolts.
The simulated well bore may be employed as a well bore section or a small block of wall surface without the need for the entire well bore to be placed within the apparatus for ease of operation and measurement.
In one embodiment of the present invention, as shown in fig. 1 and 2, the second gripper includes an upper gripping portion 9 and a lower gripping portion 8, the upper gripping portion 8 and the lower gripping portion 8 are respectively connected to the lower portion of the auxiliary supporting column 12 by fastening bolts, and the upper gripping portion 9 and the lower gripping portion 8 are used to grip the upper and lower ends of the analog column 15; the stress system is arranged between the two auxiliary support columns 12 and between the upper clamping part 9 and the lower clamping part 8. The upper clamping part 9 and the lower clamping part 8 are correspondingly provided with second mounting holes 7 matched with the fastening bolts; the middle parts of the upper clamping part 9 and the lower clamping part 8 are provided with fixing holes 13 for fixing the simulation rod posts 15, and the fixing holes 13 are designed into conical holes, so that the simulation rod posts 15 with different diameters can be adapted, and the sucker rods with different diameters can be simulated, as shown in fig. 6.
As a preferred scheme, as shown in fig. 1-3 and 5, the stress system comprises a fixing rod 20, an adjusting bolt 14 horizontally arranged and a stress spring 19, wherein the fixing rod 20 is arranged between two auxiliary supporting columns 12, the upper end and the lower end of the fixing rod are respectively connected with the upper clamping part 9 and the lower clamping part 8, the adjusting bolt 14 is in threaded fit with the middle part of the fixing rod 20, one end of the stress spring 19 is connected with the adjusting bolt 14, and the other end of the stress spring 19 is connected with the simulation rod column 15. Tightening the adjusting bolt 14 compresses the stress spring 19, calculating the stress according to hooke's law, to provide a quantitative transverse stress to the simulated stem. The position of the adjusting bolt is adjusted, and the adjusting bolt and the analog pole column reciprocate up and down.
As shown in fig. 1 and 2, the liquid inlet 2 and the liquid outlet 6 of the barrel 3 are respectively connected with a liquid supply device, and the liquid supply device is controlled by a controller and is used for controlling the flowing state of the fluid in the barrel 3. The liquid supply device comprises a liquid supply pump and a conveying pipe, the liquid supply pump is controlled by the controller, the adjustment of flow speed and flow rate is realized, the types of fluid can be adjusted, and the adjustment of the components and properties of the fluid is realized.
The invention also provides an experimental method for researching the eccentric wear loss of the sucker rod, which comprises the following steps:
preparing experimental simulation shaft and simulation rod column according to experimental requirements, and measuring net weight G Cartridge 1 、G Rod 1 。
Placing the simulated wellbore on a first holder and fixing the simulated wellbore by a locking bolt;
placing the simulation pole on a second clamp holder, and fixing the simulation pole through a locking bolt; according to the transverse stress required by the experiment, the adjusting bolt is screwed into a designated position, and the stress in a designated direction is provided for the simulation pole.
Preparing fluid according to the simulated produced liquid requirement, connecting a liquid inlet hole and a liquid outlet hole, and setting the flow speed and the flow rate of the fluid according to the experimental requirement;
lowering the simulated rod column to the appointed depth of the simulated shaft, setting a reciprocating motion system according to experimental requirements, and setting the speed, amplitude and frequency of reciprocating motion of the simulated rod column;
starting valves of the liquid inlet hole and the liquid outlet hole, starting a liquid supply pump, and starting a motion motor to enable the simulation rod column to start reciprocating motion when the fluid flows out of the liquid outlet hole;
after the specified time t is waited, the motion motor is turned off, the liquid supply pump is stopped, the fluid in the barrel body is discharged, the simulated rod column and the simulated shaft are taken out, and the net weight G of the simulated rod column and the simulated shaft is measured Barrel 2 、G Rod 2 Obtaining corresponding experimental data; calculating to obtain the loss of the simulated rod string and the simulated shaft, the eccentric wear loss rate and the eccentric wear loss rate;
calculating the loss of the simulated rod string and the simulated well bore according to the formula (1) and the formula (2):
（1）
（2）
wherein: g (G) Rod -simulating the amount of loss of the stem;
∆G cartridge -simulating the loss of the wellbore;
calculating the eccentric wear loss rate according to the formula (3) and the formula (4):
（3）
（4）
wherein: s is S Cartridge -simulating a loss rate of the wellbore;
S rod -simulating the loss rate of the rod string;
calculating the partial wear rate according to the formula (5) and the formula (6):
（5）
（6）
wherein: η (eta) Cartridge -simulating a loss rate of the wellbore;
η rod -simulating the loss rate of the rod string;
after the experiment is finished, all power supplies are cut off, and the experimental device is cleaned.
In conclusion, the invention has the advantages of simple structure, low cost, high repeatability and simple operation; the loss quantity, the loss rate and the loss degree of the sucker rod under the stress eccentric wear condition under the actual working condition can be simulated; the actual flowing state of the underground produced liquid can be simulated by preparing the fluid and inputting the fluid into the barrel body, and the influence of the actual flowing state on the wall of the well bore and the sucker rod can be simulated; the stress of the sucker rod can be simulated through the stress system, and the eccentric wear condition of the sucker rod under the deformation condition after the stress is generated; the invention can quantitatively characterize the uneven wear consumption of the underground sucker rod and measure the uneven wear condition under different working conditions. Meanwhile, the invention can be combined with a theoretical mathematical model and simulation software simulation, and the theoretical loss, loss rate and loss rate obtained by theoretical and simulation calculation are verified, so that the research is more perfect and more practical, and the invention has more representative significance, so as to provide accurate theoretical and technical guidance for field application.
Claims (6)
1. Experimental device for be used for studying sucker rod eccentric wear loss, its characterized in that: the experimental device comprises a barrel body capable of containing fluid, a simulation shaft for simulating an oil pipe and a simulation rod column for simulating a sucker rod, wherein the bottom of the barrel body is provided with a liquid inlet hole, the top of the barrel body is provided with a liquid outlet hole, and fluid simulating produced liquid can be conveyed into the barrel body through the liquid inlet hole and the liquid outlet hole; the simulated shaft is arranged on the inner wall of the barrel body through a first clamp holder, the simulated rod column is connected with the bracket through a second clamp holder, the lower end of the simulated rod column extends into the simulated shaft and can move up and down along the inner cavity of the simulated shaft, and the simulated rod column is connected with the reciprocating system and used for simulating the reciprocating motion of the sucker rod; the simulation rod column is provided with a stress system for simulating transverse stress born by the sucker rod;
the barrel body is vertically arranged on the base, the support comprises four support columns, the reciprocating motion system is arranged on the upper parts of the four support columns, the four support columns are respectively two main support columns and two auxiliary support columns, the two main support columns are arranged on the outer side of the barrel body, the bottom of the two main support columns is fixed on the base, the two auxiliary support columns are arranged above the barrel body, and the second clamp holder and the stress system are arranged on the lower parts of the auxiliary support columns;
the second clamp comprises an upper clamping part and a lower clamping part, the upper clamping part and the lower clamping part are respectively connected with the lower part of the auxiliary support column, and the upper end and the lower end of the simulation rod column are clamped by the upper clamping part and the lower clamping part; the stress system is arranged between the two auxiliary support columns, and between the upper clamping part and the lower clamping part;
the stress system comprises a fixing rod, an adjusting bolt and a stress spring, wherein the adjusting bolt and the stress spring are horizontally arranged, the fixing rod is arranged between two auxiliary supporting columns, the upper end and the lower end of the fixing rod are respectively connected with the upper clamping part and the lower clamping part, the adjusting bolt is in threaded fit with the middle part of the fixing rod, and one end of the stress spring is connected with the adjusting bolt, and the other end of the stress spring is connected with the simulation rod column.
2. The experimental set-up for investigating wear and tear of a sucker rod as claimed in claim 1, wherein: the first clamp holder comprises a left clamping part, a right clamping part, an upper sliding rail and a lower sliding rail, wherein the upper sliding rail and the lower sliding rail are respectively fixed on the inner wall of the barrel body, the left clamping part and the right clamping part respectively clamp the left side and the right side of the simulated shaft, and the upper end and the lower end of the left clamping part and the lower end of the right clamping part are respectively in sliding fit with the upper sliding rail and the lower sliding rail, so that the position of the simulated shaft can be adjusted in the horizontal direction.
3. The experimental set-up for investigating wear and tear of a sucker rod as claimed in claim 1, wherein: the reciprocating system is a motion motor, the output end of the motion motor is connected with the analog pole, four corners of the motion motor are respectively provided with guide holes matched with four support columns, and the upper parts of the four support columns are used as guide rails for the motion motor to move up and down; the motion motor is connected with the control panel and used for controlling the motion speed, the reciprocating motion amplitude and the motion frequency of the simulated pole.
4. The experimental set-up for investigating wear and tear of a sucker rod as claimed in claim 1, wherein: the liquid inlet and the liquid outlet of the barrel body are respectively connected with liquid supply equipment, and the liquid supply equipment is controlled by a controller and is used for controlling the flowing state of fluid in the barrel body.
5. An experimental method for researching the eccentric wear loss of a sucker rod is characterized by comprising the following steps:
preparing experimental simulation shaft and simulation rod column according to experimental requirements, and measuring net weight G Cartridge 1 、G A rod 1;
assembling the experimental device of any of claims 1-4;
preparing fluid according to the simulated produced liquid requirement, connecting a liquid inlet hole and a liquid outlet hole, and setting the flow speed and the flow rate of the fluid according to the experimental requirement;
lowering the simulated rod column to the appointed depth of the simulated shaft, setting a reciprocating motion system according to experimental requirements, and setting the speed, amplitude and frequency of reciprocating motion of the simulated rod column;
when the fluid flows out of the liquid discharge hole, starting a reciprocating motion system to enable the simulated rod column to start reciprocating motion;
after waiting for a specified time t, closing the reciprocating motion system, stopping the liquid inlet of the barrel body, discharging the internal fluid, taking out the simulated rod column and the simulated shaft, and measuring the net weight G Barrel 2 、G Rod 2 Obtaining corresponding experimental data; calculating to obtain the loss of the simulated rod string and the simulated shaft, the eccentric wear loss rate and the eccentric wear loss rate;
after the experiment is finished, all power supplies are cut off, and the experimental device is cleaned.
6. The experimental method for studying the wear and tear of a sucker rod of claim 5, wherein: calculating the loss of the simulated rod string and the simulated wellbore according to the following formulas (1) and (2):
（1）
（2）
wherein: g (G) Rod -simulating the amount of loss of the stem;
∆G cartridge -simulating the loss of the wellbore;
calculating the eccentric wear loss rate according to the formula (3) and the formula (4):
（3）
（4）
wherein: s is S Cartridge -simulating a loss rate of the wellbore;
S rod -simulating the loss rate of the rod string;
calculating the partial wear rate according to the formula (5) and the formula (6):
（5）
（6）
wherein: η (eta) Cartridge -simulating a loss rate of the wellbore;
η rod -analog rodThe loss rate of the column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495378.9A CN117233022A (en) | 2023-11-10 | 2023-11-10 | Experimental device and method for researching eccentric wear loss of sucker rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495378.9A CN117233022A (en) | 2023-11-10 | 2023-11-10 | Experimental device and method for researching eccentric wear loss of sucker rod |
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| CN117233022A true CN117233022A (en) | 2023-12-15 |
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|---|---|---|---|
| CN202311495378.9A Pending CN117233022A (en) | 2023-11-10 | 2023-11-10 | Experimental device and method for researching eccentric wear loss of sucker rod |
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| CN103033468A (en) * | 2012-12-15 | 2013-04-10 | 山东大东联石油设备有限公司 | Simulation testing machine for abrasion of rod pipe |
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| CN110702547A (en) * | 2018-07-10 | 2020-01-17 | 临沂大学 | Novel rod and pipe friction wear testing machine under temperature-changing mixed medium |
| CN112730131A (en) * | 2020-12-25 | 2021-04-30 | 西安建筑科技大学 | Device and method for detecting pipe inner wall curved surface-curved surface friction wear amount |
| CN115235876A (en) * | 2022-08-02 | 2022-10-25 | 新干县创拓科技有限公司 | Rigidity inspection and test machine for new material for mainboard |
| CN116448658A (en) * | 2023-03-15 | 2023-07-18 | 太原理工大学 | Device and method for detecting cohesive strength under bidirectional coupling effect |
-
2023
- 2023-11-10 CN CN202311495378.9A patent/CN117233022A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2160396A1 (en) * | 1995-04-26 | 1996-10-27 | Dan E. O'hair | Rod guide test apparatus and method |
| CN202533340U (en) * | 2012-03-09 | 2012-11-14 | 中国石油天然气股份有限公司 | Vertical reciprocating pipe rod abrasion test device |
| CN103033468A (en) * | 2012-12-15 | 2013-04-10 | 山东大东联石油设备有限公司 | Simulation testing machine for abrasion of rod pipe |
| CN107101901A (en) * | 2016-02-19 | 2017-08-29 | 中国石油化工股份有限公司 | A kind of reciprocating friction abrasion test device and method |
| CN110702547A (en) * | 2018-07-10 | 2020-01-17 | 临沂大学 | Novel rod and pipe friction wear testing machine under temperature-changing mixed medium |
| CN112730131A (en) * | 2020-12-25 | 2021-04-30 | 西安建筑科技大学 | Device and method for detecting pipe inner wall curved surface-curved surface friction wear amount |
| CN115235876A (en) * | 2022-08-02 | 2022-10-25 | 新干县创拓科技有限公司 | Rigidity inspection and test machine for new material for mainboard |
| CN116448658A (en) * | 2023-03-15 | 2023-07-18 | 太原理工大学 | Device and method for detecting cohesive strength under bidirectional coupling effect |
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