CN101832110A - Optimal experimental method for coupling centralizer - Google Patents
Optimal experimental method for coupling centralizer Download PDFInfo
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- CN101832110A CN101832110A CN 201010162053 CN201010162053A CN101832110A CN 101832110 A CN101832110 A CN 101832110A CN 201010162053 CN201010162053 CN 201010162053 CN 201010162053 A CN201010162053 A CN 201010162053A CN 101832110 A CN101832110 A CN 101832110A
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- centralizer
- coupling centralizer
- coupling
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Abstract
The invention discloses an optimal experimental method for a coupling centralizer, comprising the following specific steps: loading a coupling centralizer rod string into a simulated oil pipe containing oil, water or oil substituting liquid; enabling the coupling centralizer rod string to make reciprocating motion in the simulated oil pipe along the axial direction thereof under the operation of the simulated oil pipe, and simultaneously, utilizing a tension and compression sensor to collect the force for the reciprocating motion of the coupling centralizer; and comparing the collected driving forces of the coupling centralizer rod strings with different structural parameters to screen out the optimal coupling centralizer structure parameter and realize the optimal design of the coupling centralizer. The method of the invention is simple, can effectively simulate the working condition of the centralizer in the process of extracting oil, and can rapidly estimate various centralizers.
Description
Technical field
The gas field of engineering technology that the present invention relates to recover the oil, especially a kind of optimal experimental method for coupling centralizer.
Background technology
About 80% of each elephant producing well of China uses the pumping production technology, and the row of China's coal bed gas well adopts the mode of production that the overwhelming majority has adopted the exploitation of oil pumper drainage and step-down.Therefore under this condition of work, eccentric wear causes the workload of oil well pump detection and workover to account for 50% of annual rod-pumped well pump detection and workover workload summation, studies centralizer and reduces the loss that eccentric wear causes production positive meaning is arranged.
Research to coupling centralizer has both at home and abroad had long history, yet the optimization method research for coupling centralizer is very few, and the quantity of the width of guiding gutter on the quantity of set wiper block, the wiper block on coupling centralizer, the guiding gutter that circumferentially distributes, the degree of depth of guiding gutter, the structural parameters such as eddy flow angle of guiding gutter are directly connected to the work effect of centralizer, and the material of wiper block then is related to the application life of centralizer.A centralizer reasonable in design can either reliably be set upright, can make the load of increase as far as possible little again,, also give the extra increase of sucker rod bigger load though the irrational centralizer of design then can be set upright sucker rod, and application life is very short, increases the maintenance cost of equipment.
Summary of the invention
At the problem that prior art exists, the object of the present invention is to provide that a kind of method is simple, the optimal experimental method for coupling centralizer of processing ease.
For achieving the above object, optimal experimental method for coupling centralizer of the present invention is specially: coupling centralizer bar string is packed into be equipped with in the simulation oil pipe of fluid or water or fluid replacement liquid, simulation sucker rod operation make coupling centralizer bar string in the simulation oil pipe along its axially reciprocating, meanwhile, utilize tension-compression sensor to gather to driving the reciprocating power of this coupling centralizer bar string; Driving force by the coupling centralizer bar string that has the different structure parameter respectively that will be gathered compares, and filters out optimum coupling centralizer structural parameters, realizes the optimal design of coupling centralizer.
Further, described coupling centralizer bar string comprises one or several centralizers, links to each other by quarter butt between several centralizers.
Further, described coupling centralizer bar string upper end is connected with sucker rod simulation pull bar, and put into described simulation oil pipe by this pull bar, and described coupling centralizer bar string lower end also is connected with the simulation balancing weight of end load down, and described tension-compression sensor is arranged on the described pull bar.
Further, the structure optimization parameter of described coupling centralizer comprises: the length of coupling centralizer, the mounting means of coupling centralizer, the quantity of guiding gutter on the coupling centralizer, the width of guiding gutter, the degree of depth, the eddy flow angle of guiding gutter.
Further, the signal of described tension-compression sensor collection transmits computer after via amplifier, A/D converter, and draws corresponding load curve by computer.
Further, the optimization of described coupling centralizer is also comprised optimization to its used material.
The inventive method is simple, can effectively simulate the actual condition of coupling centralizer, the rapid evaluation of the hoop centralizer performance that achieves a butt joint, the optimal design of realization coupling centralizer.
The specific embodiment
Coupling centralizer assay optimization method of the present invention, can optimize testing machine by coupling centralizer finishes, in the testing machine, can comprise testing counter, on the platform of experimental bench motor cabinet is installed, linear electric motors are installed on the motor cabinet, the below of testing counter is equipped with sleeve pipe, is provided with the simulation oil pipe in sleeve pipe, is provided with coupling centralizer bar string in the simulation oil pipe, coupling centralizer bar string comprises one or several centralizers, links to each other by quarter butt between several centralizers.Coupling centralizer bar string upper end is connected with sucker rod simulation pull bar, and by this pull bar put into the simulation oil pipe, the coupling centralizer lower end also is connected with the simulation balancing weight of end load down, also be provided with tension-compression sensor on the pull bar, pull bar links to each other with linear electric motors, linear electric motors pulling pull bar moves back and forth, with the operating mode of simulation centralizer.
In order to simulate the underground work environment in the oil pumping process, in the simulation oil pipe fluid or water or fluid replacement liquid are housed, also extending oil, gas, water, sand mixture in the gap according to demand, according to the test demand, also water, liquefied mixture etc. can be heated to the temperature of setting, with the oil gas state under the simulation well.
When linear electric motors pullings pull bar moves back and forth, the operation of simulation sucker rod make coupling centralizer bar string in the simulation oil pipe along the oil pipe axially reciprocating, meanwhile, utilize tension-compression sensor to gather to driving the reciprocating power of this coupling centralizer bar string; Driving force by the coupling centralizer that has the different structure parameter respectively that will be gathered compares, and filters out optimum coupling centralizer structural parameters, realizes the optimal design of coupling centralizer.
The structure optimization parameter of coupling centralizer comprises: the length of coupling centralizer, the mounting means of coupling centralizer, the quantity of guiding gutter on the coupling centralizer, the width of guiding gutter, the degree of depth, the eddy flow angle of guiding gutter, the material that coupling centralizer is used.
Signal of sensor is transferred to computer after via signal amplifier, A/D converter and handles, to draw the drop-down pressure-plotting of various parameters, and draw corresponding load curve by computer, draw under different operating modes the centralizer of needed function admirable with optimization.
In process of the test, sensor detects the suffered pressure of pull bar in real time, and with its record, storage, to be formed on the pressure database that uses under the dissimilar centralizers, follow-up data is handled can adopt orthogonal test method, thereby convenient follow-up data contrast, optimization are beneficial to the centralizer optimization in Properties and improve.
Coupling centralizer assay optimization method of the present invention has simply, practicality etc. had a few, can assess various centralizers fast, draw the centralizer kind that different oil well is suitable for optimization, and then improved application lifes such as oil pipe, improve the safety of well recovery operation.
Claims (6)
1. optimal experimental method for coupling centralizer, it is characterized in that, this method is specially: coupling centralizer bar string is packed into be equipped with in the simulation oil pipe of fluid or water or fluid replacement liquid, simulation sucker rod operation make coupling centralizer bar string in the simulation oil pipe along its axially reciprocating, meanwhile, utilize tension-compression sensor to gather to driving the reciprocating power of this coupling centralizer bar string; Driving force by the coupling centralizer bar string that has the different structure parameter respectively that will be gathered compares, and filters out optimum coupling centralizer structural parameters, realizes the optimal design of coupling centralizer.
2. optimal experimental method for coupling centralizer as claimed in claim 1 is characterized in that, described coupling centralizer bar string comprises one or several centralizers, links to each other by quarter butt between several centralizers.
3. optimal experimental method for coupling centralizer as claimed in claim 2, it is characterized in that, described coupling centralizer bar string upper end is connected with sucker rod simulation pull bar, and put into described simulation oil pipe by this pull bar, described coupling centralizer bar string lower end also is connected with the simulation balancing weight of end load down, and described tension-compression sensor is arranged on the described pull bar.
4. optimal experimental method for coupling centralizer as claimed in claim 3, it is characterized in that, the structure optimization parameter of described coupling centralizer comprises: the length of coupling centralizer, the mounting means of coupling centralizer, the quantity of guiding gutter on the coupling centralizer, the width of guiding gutter, the degree of depth, the eddy flow angle of guiding gutter.
5. optimal experimental method for coupling centralizer as claimed in claim 1 is characterized in that, the signal of described tension-compression sensor collection transmits computer after via amplifier, A/D converter, and draws corresponding load curve by computer.
6. optimal experimental method for coupling centralizer as claimed in claim 3 is characterized in that, the optimization of described coupling centralizer is also comprised optimization to its used material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010162053 CN101832110A (en) | 2010-04-28 | 2010-04-28 | Optimal experimental method for coupling centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010162053 CN101832110A (en) | 2010-04-28 | 2010-04-28 | Optimal experimental method for coupling centralizer |
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| CN101832110A true CN101832110A (en) | 2010-09-15 |
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| CN 201010162053 Pending CN101832110A (en) | 2010-04-28 | 2010-04-28 | Optimal experimental method for coupling centralizer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339896A (en) * | 1993-05-06 | 1994-08-23 | J. M. Huber Corp. | Field installable rod guide and method |
| CN2635896Y (en) * | 2003-08-20 | 2004-08-25 | 大庆油田有限责任公司 | Coupling centralising devcie for plug-in connected hollow sucker rod |
| CN101078669A (en) * | 2007-06-22 | 2007-11-28 | 燕山大学 | Reciprocating type pumping rod centralizer friction and wear test machine |
| CN101183063A (en) * | 2007-12-07 | 2008-05-21 | 燕山大学 | Vertical type sucker rod centralizer friction wear testing machine |
-
2010
- 2010-04-28 CN CN 201010162053 patent/CN101832110A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339896A (en) * | 1993-05-06 | 1994-08-23 | J. M. Huber Corp. | Field installable rod guide and method |
| CN2635896Y (en) * | 2003-08-20 | 2004-08-25 | 大庆油田有限责任公司 | Coupling centralising devcie for plug-in connected hollow sucker rod |
| CN101078669A (en) * | 2007-06-22 | 2007-11-28 | 燕山大学 | Reciprocating type pumping rod centralizer friction and wear test machine |
| CN101183063A (en) * | 2007-12-07 | 2008-05-21 | 燕山大学 | Vertical type sucker rod centralizer friction wear testing machine |
Non-Patent Citations (2)
| Title |
|---|
| 《工程科技Ⅰ辑》 20081130 张军文 《抽油杆扶正器摩擦磨损试验台的研制及摩擦磨损试验研究》 , * |
| 《石油机械》 20060531 汪平等 《抽油杆柱应力测试与数据分析》 56-58 第34卷, 第5期 * |
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Application publication date: 20100915 |