CN101397898A - Eccentric wear prevention method for pumping well with pole - Google Patents
Eccentric wear prevention method for pumping well with pole Download PDFInfo
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- CN101397898A CN101397898A CNA2008101960991A CN200810196099A CN101397898A CN 101397898 A CN101397898 A CN 101397898A CN A2008101960991 A CNA2008101960991 A CN A2008101960991A CN 200810196099 A CN200810196099 A CN 200810196099A CN 101397898 A CN101397898 A CN 101397898A
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Abstract
The invention discloses an eccentric wear prevention method for a rod pumping well in the technical field of oil production by sucker rod pump. From the aspect of the research of three-dimensional well bore trace and the motion trace of a sucker rod, a mechanics theory model of the sucker rod in the three-dimensional well bore is established; through the actual measurement of parameters of pulling, pressing, twisting, temperature, acceleration and the like of a certain point of the sucker rod string, necessary boundary conditions are provided to the mechanics analysis model of the three-dimensional sucker rod and rod string mechanics analysis parameters, the stress status of various levels of the sucker rod and the eccentric wear condition of the eccentric wear under actual well conditions are obtained through an analysis software of the three-dimensional sucker rod; and a hollow embedded weighted lever, an eccentric wear prevention collar and other eccentric wear prevention technique are adopted to reduce the eccentric wear points and the rod string and improve the abrasion performance of the eccentric wear points. The invention provides technical support for the optimization of the combination of rods and pumps and the eccentric wear, breaking and casting prevention of the sucker rod and the diagnosis of the oil well through the construction of the mechanics model close to the actual production and forms a set of targeted and pragmatic comprehensive eccentric wear prevention design method for the sucker rod string.
Description
Technical field
The present invention relates to sucker rod pumping field, oil field, particularly the method for designing of the anti-eccentric wear of sucker rod pumping well.
Background technology
The sucker rod pumping artificial lifting way has advantages such as cost is low, management and maintenance is easy, wide accommodation, thus in each oil field of China always all in occupation of leading position.In the sucker-rod pumping process, the eccentric wear phenomenon takes place in sucker rod and oil pipe easily, particularly the side-abrasion of rod string phenomenon is more serious in the oil well of some well track more complicated such as deviated directional drilling and special wells, sucker rod often occurs and rub the situation worn out, cause the rising of oil well pump detection and workover expense on the one hand with oil pipe; Influence on the other hand oil well ordinary production, cause production loss.
At the side-abrasion of rod string problem that sucker rod pumping exists, researcher has been done number of research projects both at home and abroad, and is stretching from increasing the weight of aspect eccentric wear-proof process, set upright many-sides such as drag reduction, roofbolt optimization and set about, and formed a series of eccentric wear-proof process and instrument.Also obtaining some progress aspect the theoretical research of the mechanical analysis of rod string.Proposed that sucker rod form in three-dimensional wellbore space is described and a series of Mathematical Modelings and the theoretical analysis method of dynamic analysis.Although major part has the lever system optimizing Design Software to consider the three-dimensional feature of well track, but on fringe conditions and method for designing, also there is very big deficiency, rest on theoretical modeling, the theoretical calculating, have only surface dynamometer card and oil pumper movement locus as fringe conditions, lack the actual test data in down-hole, very difficult influence factor with the various complexity in down-hole is calculated clear, especially has deficiency combining of anti-eccentric wear instrument and software, and practical application is quite different.In the The field, the pump detection and workover well that causes because of eccentric wear remains high.
Summary of the invention
The objective of the invention is to provide that a cover can realize that the detection of rod string down-hole actual loading, sucker rod mechanics parameter calculate in order to overcome above-mentioned shortcoming, the stress of whole pumping rod and loading analysis, eccentric wear position prediction, eccentric wear-proof process method.
In order to realize that the technical scheme that purpose of the present invention adopts comprises the steps:
1, according to hole angle, azimuth and the well depth of oil well, obtain the data of three dimensional hole trajectory, based on three dimensional hole trajectory, from the sucker rod motion track research, use the infinitesimal vector method, set up sucker rod system dynamics model and numerical model in the three-dimensional well space, and worked out corresponding software;
2, with down-hole storage type sucker rod apparatus for testing mechanical in the sucker rod lower going-into-well, detect actual axial force, moment of torsion, well hydraulic coupling, temperature, acceleration and the time parameter of realistic well condition condition lower sucker rod diverse location, and obtain the measured indicator diagram of down-hole sucker rod diverse location according to the actual measurement parameter;
3, utilize the actual loading data of down-hole sucker rod, in conjunction with measured indicator diagram, necessary fringe conditions is provided for three-dimensional sucker rod mechanical analysis software, by three-dimensional sucker rod mechanical analysis software step by step, pointwise carries out match, correction, make theoretical model and Model Measured reach unanimity, according to the roofbolt mechanical analysis of the down-hole diverse location under the realistic well condition condition, obtain the force-bearing situation and the roofbolt eccentric wear situation of each grade pumping rod;
4, roofbolt force-bearing situation and the eccentric wear situation that obtains according to above-mentioned steps adopts the heavy formula weighted lever of hollow biography, anti-eccentric wear box cupling, abrasionproof packing ring to reduce the eccentric wear of pipe bar and the life-span of improving the pipe bar.
The present invention adopts method theoretical and that actual measurement combines, set up a cover and relatively pressed close to produce actual mechanics analysis model, obtain the stressed and eccentric wear situation of the sucker rod of down-hole diverse location, and carry out the rod string optimal design according to analysis result, increase anti-eccentric wear box cupling or abrasionproof packing ring simultaneously in the eccentric wear position, reach the at different levels equal energy works fine that makes whole pumping rod, reduce the maintenance activity number of times that causes because of eccentric wear.Compared with prior art, the present invention can realize that the detection of rod string down-hole actual loading, sucker rod mechanics parameter calculate, stress and loading analysis, eccentric wear position prediction and the anti-eccentric wear scheme of whole pumping rod; Be to optimize the rod pump combination, disconnected control of taking off of sucker rod partial wear and oil well diagnosis provide technical support, and pointed, the effective comprehensively anti-eccentric wear scheme of rod string of a cover that forms, for the ordinary production of sucker rod pumping well provides powerful guarantee.
The specific embodiment
For reducing the eccentric wear of sucker rod pumping well, can adopt following steps:
1, according to hole deviation, azimuth and well depth, obtain the data of three dimensional hole trajectory, based on three dimensional hole trajectory, from the sucker rod motion track research, use the infinitesimal vector method, set up sucker rod system dynamics model and numerical model in the three-dimensional well space, and worked out corresponding software; This system dynamics model and numerical model are theoretical model, mainly compare and revise by the real data of surveying thereafter.
2, with down-hole storage type sucker rod apparatus for testing mechanical in the sucker rod lower going-into-well, detect actual axial force, moment of torsion, well hydraulic coupling, temperature, acceleration and the time parameter of realistic well condition condition lower sucker rod diverse location, and obtain the measured indicator diagram of down-hole sucker rod diverse location according to the actual measurement parameter;
3, utilize the actual measurement parameter of down-hole sucker rod, in conjunction with measured indicator diagram, necessary fringe conditions is provided for three-dimensional sucker rod mechanical analysis software, by three-dimensional sucker rod mechanical analysis software step by step, pointwise carries out match, revises the system dynamics model and the numerical model that obtain in the step 1, make theoretical model and measured data reach unanimity, according to the roofbolt mechanical analysis parameter of down-hole diverse location, obtain the force-bearing situation and the roofbolt eccentric wear situation of each grade pumping rod;
4, roofbolt force-bearing situation and the eccentric wear situation that obtains according to above-mentioned steps carried out the optimal design of rod string, adopts the heavy formula weighted lever of hollow biography, anti-eccentric wear box cupling, abrasionproof packing ring to reduce the eccentric wear of roofbolt and the application life of improving the pipe bar simultaneously.
Above-mentioned steps can reduce the eccentric wear of sucker rod and oil pipe, reduces maintenance frequency, improves the pump detection period of oil well.
Claims (1)
1, the method for the anti-eccentric wear of a kind of sucker rod pumping well comprises the steps:
1) according to hole angle, azimuth and the well depth of oil well, obtain the data of three dimensional hole trajectory, based on three dimensional hole trajectory, from the sucker rod motion track research, use the infinitesimal vector method, set up sucker rod system dynamics model and numerical model in the three-dimensional well space, and worked out corresponding software;
2) with down-hole storage type sucker rod apparatus for testing mechanical in the sucker rod lower going-into-well, detect actual axial force, moment of torsion, well hydraulic coupling, temperature, acceleration and the time parameter of realistic well condition condition lower sucker rod diverse location, and obtain the measured indicator diagram of down-hole sucker rod diverse location according to the actual measurement parameter;
3) utilize the actual loading data of down-hole sucker rod, in conjunction with measured indicator diagram, necessary fringe conditions is provided for three-dimensional sucker rod mechanical analysis software, by three-dimensional sucker rod mechanical analysis software step by step, pointwise carries out match, correction, make theoretical model and measured data reach unanimity, according to the roofbolt mechanical analysis of the down-hole diverse location under the realistic well condition condition, obtain the force-bearing situation and the roofbolt eccentric wear situation of each grade pumping rod;
4) roofbolt force-bearing situation and the eccentric wear situation that obtains according to above-mentioned steps adopts the heavy formula weighted lever of hollow biography, anti-eccentric wear box cupling, abrasionproof packing ring to reduce the eccentric wear of pipe bar and the application life of improving the pipe bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101960991A CN101397898B (en) | 2008-09-16 | 2008-09-16 | Eccentric wear prevention method for sucker rod oil well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101960991A CN101397898B (en) | 2008-09-16 | 2008-09-16 | Eccentric wear prevention method for sucker rod oil well |
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| CN101397898A true CN101397898A (en) | 2009-04-01 |
| CN101397898B CN101397898B (en) | 2012-05-30 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235155A (en) * | 2011-07-14 | 2011-11-09 | 上海大学 | Method for designing position of directional well sucker rod string centering device |
| CN102242609A (en) * | 2011-07-14 | 2011-11-16 | 上海大学 | Method for designing positions of sucker rod stabilizers with same bending stiffness in straight well |
| CN102305031A (en) * | 2011-07-18 | 2012-01-04 | 上海大学 | Variable-interval injection molding sucker-rod string |
| CN103499501A (en) * | 2013-09-26 | 2014-01-08 | 中国石油天然气股份有限公司 | Sucker rod wear evaluation method and device based on well fluid lubrication effect |
| CN104533348A (en) * | 2014-12-04 | 2015-04-22 | 中国石油天然气股份有限公司 | Eccentric wear prevention control system and method for oil well lifting |
| CN106437682A (en) * | 2016-11-01 | 2017-02-22 | 中国石油集团东方地球物理勘探有限责任公司 | Method for predicting oil well indicator diagram |
| CN107844101A (en) * | 2016-09-20 | 2018-03-27 | 中国石油化工股份有限公司 | A kind of rod pumped well production diagnosis optimization system and method |
| CN108491672A (en) * | 2018-04-19 | 2018-09-04 | 西南石油大学 | A kind of oil pumping in oil fields bar eccentric wear-proof process scheme |
| CN111020448A (en) * | 2019-12-12 | 2020-04-17 | 北京工商大学 | Wear-resistant anti-corrosion sucker rod coupling with oil storage and oil supplement channel on surface and preparation process |
| CN114000835A (en) * | 2021-09-06 | 2022-02-01 | 山东亿源石油科技有限公司 | Corrosion prevention, scale prevention and eccentric wear prevention method for lining oil pipe used for oil field rod-pumped well |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2680854Y (en) * | 2004-02-23 | 2005-02-23 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Down-hole storage type pipe-bar parameter detector |
-
2008
- 2008-09-16 CN CN2008101960991A patent/CN101397898B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242609A (en) * | 2011-07-14 | 2011-11-16 | 上海大学 | Method for designing positions of sucker rod stabilizers with same bending stiffness in straight well |
| CN102235155A (en) * | 2011-07-14 | 2011-11-09 | 上海大学 | Method for designing position of directional well sucker rod string centering device |
| CN102305031A (en) * | 2011-07-18 | 2012-01-04 | 上海大学 | Variable-interval injection molding sucker-rod string |
| CN103499501A (en) * | 2013-09-26 | 2014-01-08 | 中国石油天然气股份有限公司 | Sucker rod wear evaluation method and device based on well fluid lubrication effect |
| CN103499501B (en) * | 2013-09-26 | 2016-08-17 | 中国石油天然气股份有限公司 | Sucker rod wear evaluation method and device based on well fluid lubrication effect |
| CN104533348A (en) * | 2014-12-04 | 2015-04-22 | 中国石油天然气股份有限公司 | Eccentric wear prevention control system and method for oil well lifting |
| CN107844101B (en) * | 2016-09-20 | 2020-05-22 | 中国石油化工股份有限公司 | Production diagnosis optimization system and method for sucker-rod pump well |
| CN107844101A (en) * | 2016-09-20 | 2018-03-27 | 中国石油化工股份有限公司 | A kind of rod pumped well production diagnosis optimization system and method |
| CN106437682A (en) * | 2016-11-01 | 2017-02-22 | 中国石油集团东方地球物理勘探有限责任公司 | Method for predicting oil well indicator diagram |
| CN106437682B (en) * | 2016-11-01 | 2019-10-01 | 中国石油集团东方地球物理勘探有限责任公司 | A method of prediction oil well indicator card |
| CN108491672A (en) * | 2018-04-19 | 2018-09-04 | 西南石油大学 | A kind of oil pumping in oil fields bar eccentric wear-proof process scheme |
| CN111020448A (en) * | 2019-12-12 | 2020-04-17 | 北京工商大学 | Wear-resistant anti-corrosion sucker rod coupling with oil storage and oil supplement channel on surface and preparation process |
| CN114000835A (en) * | 2021-09-06 | 2022-02-01 | 山东亿源石油科技有限公司 | Corrosion prevention, scale prevention and eccentric wear prevention method for lining oil pipe used for oil field rod-pumped well |
| CN114000835B (en) * | 2021-09-06 | 2023-08-01 | 山东宏昌石油科技有限责任公司 | Corrosion-proof, scale-proof and eccentric wear-proof method for lining oil pipe used for oil field pumping well |
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| CN101397898B (en) | 2012-05-30 |
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