CN1355373A - Control method for preventing pump collision and over-stroke of pumping unit - Google Patents
Control method for preventing pump collision and over-stroke of pumping unit Download PDFInfo
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- CN1355373A CN1355373A CN 00133614 CN00133614A CN1355373A CN 1355373 A CN1355373 A CN 1355373A CN 00133614 CN00133614 CN 00133614 CN 00133614 A CN00133614 A CN 00133614A CN 1355373 A CN1355373 A CN 1355373A
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Abstract
A control method for preventing pump collision and over-stroke of pumping unit features that an encoder is used to accurately calculate and measure the safety stroke and distance, and a programmable controller is used to control the stroke and distance.
Description
The present invention relates to a kind of control method of bumping pump, dead space of oil production machine.
The tradition oil pumper partly is made up of motor, reducer, frame and quadric chain etc.The stroke range ability is to realize by the range ability that changes crank axle, and have only 3.4m, 4.2m, three fixing stroking distances of 5m from, can not carry out accurately and arbitrarily adjusting.Because the stroking distance of oil pumper operation is from long and short, the gap at the bottom of piston and the pump (the anti-distance of colliding) what directly influence extraction output.And stroking distance directly influences the run location and the distance of underground deep-well pump from being subjected to liquid supply rate, gas, sucker rod stress deformation etc. all multifactor.It in the pump barrel passage that liquid flows into, this segment distance of dead space that is provided with is because within the scope of piston operation, can often have materials such as dirt in some fluid, wax to be bonded on the tube wall, and the caliber that fluid is flowed through attenuates, influence the inflow of fluid, pump efficiency is reduced.Through certain hour, regularly bump pump accurately, the dirt on can the clean-up pump barrel, material such as cured guarantee the smooth inflow of fluid to improve deep well pump extraction efficient effectively.Certain anti-collision distance will be arranged between at the bottom of piston in the oil recovery working condition requirement deep well pump and the pump, and the anti-improper direct operating efficiency (recovery ratio) that influences pump of colliding distance is bumped the damage that the pump bump also can cause pump for a long time.Piston and pump will have certain anti-pull-off distance between pushing up, and the accurate pump that bumps of setting anti-collision distance and certain hour is test, and is extremely important for the safe operation and the extraction efficient that guarantee oil production machine.
The object of the present invention is to provide and a kind of oil production machine down-hole piston is bumped anti-collision at the bottom of pump and piston stroke and the pump and the pull-off distance on pump top is measured, the control method that the oil production machine that the distance at the bottom of recover the oil down-hole piston stroke and the pump is controlled is bumped pump, dead space.
The control method that oil production machine of the present invention is bumped pump, dead space is that the driving shaft end face in oil production machine connects absolute value encoder, when by encoder oil production machine being moved encode in the angle position of driving shaft rotation, and with the code signal input programmable logic controller; When piston moves, unloader signal occurs according to load transducer downwards, big current signal appears in current sensor, and with above-mentioned receive bump the pump signal, with the position encoded computer program that deposits in, this sign indicating number is oil production machine and bumps the pump position; Oil production machine can be bumped the pump test by bumping the identification of pump position code, implementing to bump the pump program; According to down-hole feed flow situation anti-collision distance at the bottom of suitable piston and the pump is set, and will prevents colliding the distance and position sign indicating number and deposit computer-controlled program in.
The present invention adopts encoder that oil production machine down-hole piston is bumped anti-collision at the bottom of pump and piston stroke and the pump and the pull-off distance on pump top is carried out accurate Calculation and measurement, adopt the requirement of programmable controller, the distance at the bottom of oil production machine down-hole piston stroke and the pump (dead space) is programmed and controlled according to hole condition.Adopt LCD, printer to carry out data demonstration and printing.Realize that oil production machine down-hole piston bumps the anti-automatic control that collides, prevents the pull-off distance between pump and piston and the pump.
The drawing explanation:
Fig. 1 is that anti-collision between at the bottom of piston of the present invention and the pump is apart from schematic diagram.
Fig. 2 is that oil production machine of the present invention is bumped pump adjustment control method schematic diagram.
Fig. 3 is that oil production machine of the present invention is pulled out pump adjustment control method schematic diagram.
It is as follows that oil production machine of the present invention is bumped the control method principle and the operating procedure of pump, dead space:
The present invention connects absolute value encoder at the driving shaft end face of oil production machine.When by encoder oil production machine being moved encode in the angle position of driving shaft rotation, and with the code signal input programmable logic controller.Again code signal is converted to oil production machine stroke distance and position signal, the rotation of oil production machine when operation driving shaft, drive underground hundreds of rice piston to the sucker rod of several kms and the deep well pump by polished rod eye and recover the oil.The stroking distance of ground oil production machine is from respect to the distance that promptly is piston operation in the underground deep-well pump.On the ground oil production machine stroking distance from peak should be the position that the underground deep-well pump inner carrier moves to pump top.On the ground oil production machine stroking distance from minimum point should be near the position of standing valve at the bottom of the underground deep-well pump inner carrier moves to pump.According to the condition of oil well subsurface deposit condition, oil pumper, bar, pump operation, the mode by human-computer dialogue (artificial input instruction) or artificial intelligence (generating instruction automatically), adjust that piston pushes up with pump in the stroke position positioning instant deep well pump of oil production machine, the position at the bottom of the pump between the standing valve.And make deep well pump inner carrier welcome between pump top and standing valve at the bottom of the pump, setting in the stroke range (distance) that oil production machine allows prevent the collision distance, and bump pump and test.
Among the figure: (1) be oil production machine, (2) be stroking distance from, (3) be polished rod eye, (4) be dead space, (5) be sucker rod, (6) be deep well pump, (7) be pump length, (8) be travelling valve, (9) be piston length, (10) be piston, (11) be dead space, (12) be standing valve, (13) be oilbearing stratum, (14) be oil pipe, (15) be pump top, (16) be stroking distance from, (17) be that current sensor, (18) they are encoder (position sensors).
Anti-collision between Fig. 1 reflects at the bottom of piston and the pump is apart from principle: connect the power supply oil production machine and bring into operation, polished rod eye according to the program running stroking distance from (bringing into operation to the bottom) from the top.Simultaneously polished rod eye drives rod string and piston and does same stroking distance from (stroking distance of ground oil production machine from the stroking distance of=ground lower piston from).Standing valve for when oil pumping from oilbearing stratum oil-feed device, the distance between it and the piston base is a dead space.The near more resistance of distance between them is big more, helps improving output more, and the distance between them is far away more to be unfavorable for improving output more.But the too near piston base of distance is easy and standing valve bumps, and deep well pump is damaged.So accurately adjust, control dead space is an important step that guarantees oil extraction operation.
Fig. 2 reflects that oil production machine bumps pump and adjust the control method principle: connect the power supply oil production machine and bring into operation, polished rod eye drives rod string and piston moves downwards, is that piston bumps pump when load transducer occurs that big current signal appears in unloader signal, current sensor.Position sensor record rapidly bumps the pump position signalling, and this position encoded being is bumped the pump number.
The reflection oil production machine is pulled out pump and is adjusted the control method principle among Fig. 3: connect the power supply oil production machine and bring into operation, polished rod eye according to the program running stroking distance from (from the top do to the bottom reciprocal operation).Simultaneously, polished rod eye drives rod string and piston and does same stroking distance from (stroking distance of ground oil production machine from the stroking distance of=ground lower piston from).From the device of deep-well pump barrel face act bashfully oil, the near more act oil of distance between it and pump push up was many more, helps improving output more, otherwise is unfavorable for improving output when the travelling valve of piston was oil pumping.But the too near travelling valve of distance is easy and the pump phenomenon is pulled out on the pump top, and deep well pump is damaged.So will accurately adjust, control the safe distance between travelling valve and the pump top.
Operating procedure of the present invention is as follows: 1. connect the oil production machine power supply; 2. in the PLC program, import initial point position and stroke distance parameter under the stroke; 3. start the oil production machine operation; 4. detecting electric current, load has or not and bumps the pump signal; 5. do not bump the pump signal as having, offset downward distance, bump the pump signal until receiving with initial point under the programming software adjustment stroke; The pump signal (position code) that bumps that 6. will receive deposits computer program in, and this sign indicating number is oil production machine and bumps the pump position; 7. oil production machine can be implemented to bump the pump program by bumping the identification of pump position code, bumps the pump test; 8. according to situations such as down-hole feed flows anti-collision distance at the bottom of suitable piston and the pump is set, and will prevents colliding the distance and position sign indicating number and deposit computer program in.This sign indicating number is the anti-distance of colliding of oil production machine; 9. oil production machine can be discerned by the anti-position code of colliding, and revises anti-the collision apart from program, prevents colliding the finishing of distance, presses initial point (top) distance on the anti-topping program setting, and brings into operation; 10. finish.
19. load transducer, 20. programmable controllers, 21. bump pump, pump is pulled out on 22. ground, 23.
Claims (1)
1. control method that oil production machine is bumped pump, dead space, it is characterized in that: the driving shaft end face in oil production machine connects absolute value encoder, when by encoder oil production machine being moved encode in the angle position of driving shaft rotation, and with the code signal input programmable logic controller; When piston moves, unloader signal occurs according to load transducer downwards, big current signal appears in current sensor, and with above-mentioned receive bump the pump signal, with the position encoded computer program that deposits in, this sign indicating number is oil production machine and bumps the pump position; Oil production machine can be bumped the pump test by bumping the identification of pump position code, implementing to bump the pump program; According to down-hole feed flow situation anti-collision distance at the bottom of suitable piston and the pump is set, and will prevents colliding the distance and position sign indicating number and deposit computer-controlled program in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001336142A CN1162607C (en) | 2000-11-29 | 2000-11-29 | Control method for preventing pump collision and over-stroke of pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001336142A CN1162607C (en) | 2000-11-29 | 2000-11-29 | Control method for preventing pump collision and over-stroke of pumping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1355373A true CN1355373A (en) | 2002-06-26 |
| CN1162607C CN1162607C (en) | 2004-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001336142A Expired - Fee Related CN1162607C (en) | 2000-11-29 | 2000-11-29 | Control method for preventing pump collision and over-stroke of pumping unit |
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| CN (1) | CN1162607C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100504A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Screw pump anti-impact stroke determining method for coaxial double-hollow sucker rod for cold production of heavy oil |
| CN104653455A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Adjustment method of axial clearance of stator and rotor in screw pump |
| CN109267998A (en) * | 2018-10-09 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of casing tube well-completion horizontal well point adopts point survey water detecting and plugging pipe column and a method |
| CN112855093A (en) * | 2019-11-12 | 2021-05-28 | 中国石油天然气股份有限公司 | Position adjusting method and device of sucker rod and storage medium |
-
2000
- 2000-11-29 CN CNB001336142A patent/CN1162607C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100504A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Screw pump anti-impact stroke determining method for coaxial double-hollow sucker rod for cold production of heavy oil |
| CN104653455A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Adjustment method of axial clearance of stator and rotor in screw pump |
| CN104653455B (en) * | 2013-11-19 | 2016-09-07 | 中国石油天然气股份有限公司 | A kind of screw pump stator and the method for adjustment in rotor axial gap |
| CN109267998A (en) * | 2018-10-09 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of casing tube well-completion horizontal well point adopts point survey water detecting and plugging pipe column and a method |
| CN112855093A (en) * | 2019-11-12 | 2021-05-28 | 中国石油天然气股份有限公司 | Position adjusting method and device of sucker rod and storage medium |
| CN112855093B (en) * | 2019-11-12 | 2023-10-27 | 中国石油天然气股份有限公司 | Method and device for adjusting position of sucker rod and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1162607C (en) | 2004-08-18 |
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Owner name: AMERICA DIPAIYI PETROLEUM SCIENTIFIC + TECHNICAL C Free format text: FORMER OWNER: LU XU Effective date: 20090821 |
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Address after: Beijing City, Haidian District Guancheng Nanyuan 9-17D Zhang Yongan postcode: 100088 Co-patentee after: Li Ying Patentee after: Lu Xu Address before: Beijing City, Haidian District Guancheng Nanyuan 9-17D Zhang Yongan postcode: 100088 Co-patentee before: Li Ying Patentee before: Lu Xu |
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| TR01 | Transfer of patent right |
Effective date of registration: 20090821 Address after: American Colorado Patentee after: The United States Dipai oil spill technology Co. Address before: Beijing City, Haidian District Guancheng Nanyuan 9-17D Zhang Yongan postcode: 100088 Co-patentee before: Li Ying Patentee before: Lu Xu |
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| C17 | Cessation of patent right | ||
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Granted publication date: 20040818 Termination date: 20131129 |