CN104160155A - Method of detecting and breaking gas locks in an electric submersible pump - Google Patents
Method of detecting and breaking gas locks in an electric submersible pump Download PDFInfo
- Publication number
- CN104160155A CN104160155A CN201380011908.6A CN201380011908A CN104160155A CN 104160155 A CN104160155 A CN 104160155A CN 201380011908 A CN201380011908 A CN 201380011908A CN 104160155 A CN104160155 A CN 104160155A
- Authority
- CN
- China
- Prior art keywords
- time
- gas lock
- pump
- water pump
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000009795 derivation Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/007—Preventing loss of prime, siphon breakers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
- F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
- F04D15/0236—Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D31/00—Pumping liquids and elastic fluids at the same time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/001—Preventing vapour lock
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0201—Current
Abstract
A method of breaking a gas lock in an electrical submersible pump, comprising: a) monitoring a measured value related to the electrical current used by a pump motor connected to and providing power to the pump; b) comparing the measured value to a threshold value to detect the occurrence of gas lock conditions; and when those conditions are detected; c) sending an override signal to immediately reduce the flow to the pump for a set period of time; and d) comparing the measured value related to the electrical current to the threshold value at the end of the set period of time, and if gas lock conditions are not detected, then increasing the power to the pump.
Description
The cross reference of association area
The application requires the U.S. Provisional Patent Application No.61/605 submitting on March 2nd, 2012,794 rights and interests, and its full content is incorporated to herein by reference at this.
Technical field
The present invention relates to detect and break the gas lock in submersible electrical water pump.
Background technique
In deep water hydrocarbon production facility, use submersible electrical water pump so that artificial lift to be provided, make the gentle water surface that rises to of oil, to be further processed, to store and/or to transport.Cause the liquid level of inside pipe casing to decline and result sucks sufficient tolerance and may produce gas lock situation at pump in the variation of the operating fluid character of oil/gas mixture, with effective locking pump and prevent that fluid from flowing out discharge pipe line by pump.
Be as at US 5,015 for the traditional solution of this problem, described in 151, make pump stop allowing system stability, once then system returns to normal condition afterwards conventionally by making gas upwards flow and restart pump along discharge pipe line.This solution causes extending dead time, increases pump startup number of times, and result has shortened the working life (stress bearing when starting) of pump.In addition, if gas lock situation do not detected, may damage pump parts and/or may make pump motor overheated.
Summary of the invention
The invention provides a kind of method of breaking the gas lock in submersible electrical water pump, described method comprises: a) the derivation value of the electric current that uses about pump motor of monitoring, and described pump motor is connected to pump and provides power for submersible electrical water pump; B) relatively derivation value and threshold value, to detect the appearance of gas lock situation; With in the time these gas lock situations being detected; C) send override signal, to reduce the speed one set time section of pump; And d) derivation value and the threshold value about electric current relatively in the time that set time section finishes, if gas lock situation do not detected, increase the speed of pump to return to normal operation situation.
Brief description of the drawings
Fig. 1 has described an embodiment of control system;
Fig. 2 has described an embodiment of method, shows the multiple steps on time line.
Embodiment
Gas lock situation is characterised in that: in the time that gas enters into pump, the load acting on pump motor declines suddenly.Under gas lock situation, continuous running may damage submersible electrical water pump, Sealing or motor, and importantly detects gas lock situation and regulate as quickly as possible these gas lock situations, to break gas lock.
Any one in some reasons all can cause generation gas lock situation, and described some reasons comprise: the gas volume part in oil/gas mixture increases; Pump operates under too high flow velocity, and liquid level is dropped to below Pump Suction Nozzle; With the rapid fluid change of properties causing because of deep fat minimizing, gas/water slug etc.
The method detecting and break gas lock situation comprises: the operation of monitoring pump and compare operation and represent one or more predetermined threshold values of gas lock situation or the initial step of alarm.Can monitor multiple variablees, and can in the water surface, seabed or well, implement to measure.Preferred measurement is the operation standard deviation of electric submersible pump motor amperage.
Predetermined threshold value or alarm can be the hard threshold values of setting based on system, or it can be normal operation based on system or an example of the operation standard deviation of the deviation of operation in the past.
Exist various ways to send override signal, once to reach gas lock situation and just reduce the speed of pump.As shown in Figure 2, the override signal that is generally peak frequency can be decreased to predetermined minimum frequency value.In the time activating, override can be decreased to the value corresponding to the power frequency of submersible electrical water pump immediately.After this, override can be delayed and be down to its minimum value gradually, to prevent from acting on the too fast variation of load on pump.Use low signal selector by the signal for reducing to be delivered to pump motor, to reduce to flow through the flow of pump.As mentioned above, if do not taken action as soon as possible, may damage pump, therefore should be in the step that meets with gas lock situation Rapid Implementation transmission afterwards override signal.
Once reduce flow, set timer, to keep low discharge one set time section.Design based on system and the feature of oil well can be constructed and can be set this amount of time.In addition, can there is the manual override of this timer, to make operator can determine to walk around this set time section and to attempt increasing flow velocity before the time period finishes.
In the time that the time period finishes or in the time of operator's manual intervention, again measure suitable variable and compare with alarm limit value, to guarantee no longer to exist gas lock situation in system.If pump still, in gas lock state, keeps another set time section under the situation of pump in low discharge.If pump no longer, in gas lock state, will increase flow rate pump.This can by increase from pressure controller be passed to pump signal frequency and override signal reset to peak frequency signal realize.
Can increase flow velocity with the ramp rate of setting, in case locking system oblique ascension is too fast and turn back to gas lock situation.Ramp rate is estimated rate, but it can be constructed or be set by operator.
Further describe the present invention with reference to Fig. 1 and Fig. 2.Fig. 1 shows standard pressure controller 10, and described standard pressure controller 10 operates for control pump during normal conditions.Override signal 50 remains under operating frequency condition in the normal operation period, but override signal 50 is decreased to minimum frequency in the time meeting with gas lock situation.Before being passed to frequency ramp restriction controller 30, override signal and the signal from pressure controller pass through low signal selector 20.The signal that carrys out self-controller 30 is passed to electric motor controller 40, and described electric motor controller 40 is controlled and driven electric submersible pump motor.In certain embodiments, comprise anti-integration saturation signal 60 in system, prevent from the time that override signal switches to pressure control with convenient control system impacting.
Fig. 2 shows the operation of method of the present invention.In the normal operation period, override signal remains in operating frequency.In the time gas lock situation being detected, signal is decreased to minimum frequency signal, to the minimum discharge by pump is provided.The timer endurance (or in the situation that taking manual intervention more early) afterwards, replacement override and override is slowly increased to peak frequency.At this moment, pressure controller control pump, this is because two signals pass through low signal selector and continue normal, stable operation, unless again met with gas lock state.
The invention enables controller can under the condition that does not need to repeat to close submersible electrical water pump, process gas lock situation and break gas lock, repeat to close submersible electrical water pump may cause shortening pump working life because increasing the number of starts of pump.
Claims (8)
1. for breaking the method for gas lock for submersible electrical water pump, described method comprises:
A. monitor the derivation value of the electric current using about pump motor, described pump motor is connected to described submersible electrical water pump and provides power to described submersible electrical water pump;
B. more described derivation value and threshold value, to detect the appearance of described gas lock situation; And in the time these gas lock conditions being detected;
C. send override signal, reach a predetermined amount of time to reduce immediately to flow to the flow of described submersible electrical water pump; With
D. in the time that described predetermined amount of time finishes, compare derivation value and the described threshold value about described electric current, if described gas lock situation do not detected, increase the power that is fed to submersible electrical water pump.
2. method according to claim 1, wherein, the operation standard deviation that described derivation value is described pump motor amperage.
3. method according to claim 1, wherein, described override signal be conventionally under peak frequency condition, but described signal is changed to the signal of predetermined minimum frequency in the time described gas lock situation being detected.
4. method according to claim 3, wherein, by low signal selector management override signal and pressure controling signal.
5. method according to claim 1, wherein, operator can the random time after sending described override signal crosses described predetermined amount of time and steps d is carried out in pressure) comparison.
6. method according to claim 1, wherein, ramp rate is according to the rules had additional supply of the power of described submersible electrical water pump.
7. method according to claim 1, also comprise: in steps d) during, if described gas lock situation detected, continue to send override signal and reach the second predetermined amount of time, then in the time that described the second predetermined amount of time finishes, relatively about derivation value and the threshold value of described electric current, and if gas lock situation do not detected, have additional supply of the power of submersible electrical water pump.
8. method according to claim 8, also comprises: continue to send override signal and reach a follow-up predetermined amount of time, until gas lock situation do not detected.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261605794P | 2012-03-02 | 2012-03-02 | |
| US61/605,794 | 2012-03-02 | ||
| PCT/US2013/027926 WO2013130536A1 (en) | 2012-03-02 | 2013-02-27 | Method of detecting and breaking gas locks in an electric submersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104160155A true CN104160155A (en) | 2014-11-19 |
| CN104160155B CN104160155B (en) | 2017-06-06 |
Family
ID=49083221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380011908.6A Expired - Fee Related CN104160155B (en) | 2012-03-02 | 2013-02-27 | The method for detecting and breaking the gas lock in electric submersible pump |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20150056082A1 (en) |
| CN (1) | CN104160155B (en) |
| AU (1) | AU2013226214B2 (en) |
| GB (1) | GB2513062A (en) |
| MY (1) | MY183956A (en) |
| NO (1) | NO20141075A1 (en) |
| WO (1) | WO2013130536A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO3018132T3 (en) * | 2013-04-22 | 2018-05-12 | ||
| GB2547852B (en) | 2014-12-09 | 2020-09-09 | Sensia Netherlands Bv | Electric submersible pump event detection |
| NO339736B1 (en) * | 2015-07-10 | 2017-01-30 | Aker Subsea As | Subsea pump and system and methods for control |
| CA2989292A1 (en) * | 2015-07-10 | 2017-01-19 | Aker Solutions As | Subsea pump and system and methods for control |
| US10830024B2 (en) | 2017-06-24 | 2020-11-10 | Ge Oil & Gas Esp, Inc. | Method for producing from gas slugging reservoirs |
| DE102018006877A1 (en) * | 2018-08-30 | 2020-03-05 | Fresenius Medical Care Deutschland Gmbh | Pump device for pumping liquids comprising a centrifugal pump with a radially pumping pump wheel with a hollow center |
| JP7283980B2 (en) * | 2019-05-31 | 2023-05-30 | 三菱重工業株式会社 | PUMP SYSTEM AND CONTROL METHOD OF PUMP SYSTEM |
| US11448206B2 (en) * | 2020-03-31 | 2022-09-20 | Jesus S. Armacanqui | Gas lock removal method for electrical submersible pumps |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045778U (en) * | 1988-12-14 | 1989-10-11 | 中原石油勘探局采油工艺研究所 | Anti-air oil-well pump |
| US5015151A (en) * | 1989-08-21 | 1991-05-14 | Shell Oil Company | Motor controller for electrical submersible pumps |
| US6684946B2 (en) * | 2002-04-12 | 2004-02-03 | Baker Hughes Incorporated | Gas-lock re-prime device for submersible pumps and related methods |
| CN200964943Y (en) * | 2006-11-09 | 2007-10-24 | 刘洪刚 | Gas-proof lock valve of oil pump |
| US7798215B2 (en) * | 2007-06-26 | 2010-09-21 | Baker Hughes Incorporated | Device, method and program product to automatically detect and break gas locks in an ESP |
| US7869978B2 (en) * | 2002-09-27 | 2011-01-11 | Unico, Inc. | Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore |
| CA2713745A1 (en) * | 2009-08-27 | 2011-02-27 | Baker Hughes Incorporated | Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284422A (en) * | 1992-10-19 | 1994-02-08 | Turner John M | Method of monitoring and controlling a well pump apparatus |
-
2013
- 2013-02-27 US US14/381,773 patent/US20150056082A1/en not_active Abandoned
- 2013-02-27 AU AU2013226214A patent/AU2013226214B2/en not_active Ceased
- 2013-02-27 MY MYPI2014702214A patent/MY183956A/en unknown
- 2013-02-27 WO PCT/US2013/027926 patent/WO2013130536A1/en active Application Filing
- 2013-02-27 GB GB1413388.8A patent/GB2513062A/en not_active Withdrawn
- 2013-02-27 CN CN201380011908.6A patent/CN104160155B/en not_active Expired - Fee Related
-
2014
- 2014-09-05 NO NO20141075A patent/NO20141075A1/en not_active Application Discontinuation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045778U (en) * | 1988-12-14 | 1989-10-11 | 中原石油勘探局采油工艺研究所 | Anti-air oil-well pump |
| US5015151A (en) * | 1989-08-21 | 1991-05-14 | Shell Oil Company | Motor controller for electrical submersible pumps |
| US6684946B2 (en) * | 2002-04-12 | 2004-02-03 | Baker Hughes Incorporated | Gas-lock re-prime device for submersible pumps and related methods |
| US7869978B2 (en) * | 2002-09-27 | 2011-01-11 | Unico, Inc. | Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore |
| CN200964943Y (en) * | 2006-11-09 | 2007-10-24 | 刘洪刚 | Gas-proof lock valve of oil pump |
| US7798215B2 (en) * | 2007-06-26 | 2010-09-21 | Baker Hughes Incorporated | Device, method and program product to automatically detect and break gas locks in an ESP |
| CA2713745A1 (en) * | 2009-08-27 | 2011-02-27 | Baker Hughes Incorporated | Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| NO20141075A1 (en) | 2014-09-05 |
| MY183956A (en) | 2021-03-17 |
| GB2513062A (en) | 2014-10-15 |
| US20150056082A1 (en) | 2015-02-26 |
| GB201413388D0 (en) | 2014-09-10 |
| AU2013226214A1 (en) | 2014-08-21 |
| AU2013226214B2 (en) | 2016-03-10 |
| WO2013130536A1 (en) | 2013-09-06 |
| CN104160155B (en) | 2017-06-06 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20210227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |