CN1503879A - Fluid controlled pumping system and method - Google Patents
Fluid controlled pumping system and method Download PDFInfo
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- CN1503879A CN1503879A CNA028085612A CN02808561A CN1503879A CN 1503879 A CN1503879 A CN 1503879A CN A028085612 A CNA028085612 A CN A028085612A CN 02808561 A CN02808561 A CN 02808561A CN 1503879 A CN1503879 A CN 1503879A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
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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
- 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
Abstract
A fluid controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes a passage extending to a suction end of the pumping unit. The system also includes a pressure source coupled to the passage and operable to force a fluid outwardly from the passage proximate to the suction end of the pumpimg unit. The system includes a pressure sensor coupled to the passage. The system further includes a controller coupled to the pumping unit and operable to regulate an operating parameter of the pumping unit using the fluid pressure. A fluid level controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes an inlet operable to receive a fluid to be pumped from the fluid cavity. The system also includes a valve slidably coupled to the pumping unit. The valve includes a passage for receiving pumped fluid from an outlet of the pumping unit. In response to a decreasing fluid level within the fluid cavity, movement of the valve relative to the pumping unit to recirculate the pumped fluid from the outlet to the inlet.
Description
Technical field
The present invention relates generally to the fluid pump work system and relate more specifically to fluid controlled pumping system and method.
Background technique
The pump unit uses in various uses such as compression, lifting or conveying liquid.For example the pump unit uses in municipal water supply and wastewater treatment facility, mining and/or oil and gas exploration and application such as production, oil hydraulic motor and consumer goods production.The pump unit, such as the pumping unit of progressive hole pump, centrifugal pump and other form, operated by rotary motion is in fluid and be used for compressing or increasing the pressure of fluid, lifting fluid on the different floor heights or between various objectives ground conveyance fluid.
But, there are several shortcomings traditional pump unit.For example, traditional pump unit generally needs the lubricated to keep its running of certain form.For example, progressive hole pump generally comprises the rotor that is arranged in the elastomer stator.Be in operation, rotating force is passed on the rotor, the effect that between rotor and stator, produces the screw taper thus be fluid from a height to another height.In the situation of progressive hole pump, rotor rotates the friction that is caused often makes progressive hole pump break down relatively in a short time with respect to stator when lacking fluid lubrication.Usually, aspirating fluid and providing needed lubricated.But, it is lubricated that the variation of the fluid level of close pump unit inlet may cause pump unit shortage.So, the fluid lubrication that the maintenance of pump unit is enough is critical for the performance and the life-span of pumping operation.In addition, in the application of centrifugal pump, lack and fluid pumpedly may cause cavitation erosion.
Summary of the invention
In view of the above, need a kind of improved pump work system, the control of reinforcement can be provided the fluid lubrication of pump unit.The invention provides a kind of fluid controlled pumping system and method, at the shortcoming of conventional pump work system and method.
According to one embodiment of the invention, fluid controlled pumping system comprises the pump unit that is arranged in the fluid chamber.The pump unit comprises the path that extends to the pump unit header.This system also comprises the pressure source that is connected path and operationally forces fluid outwards to flow out by path from the pump unit header.This system also comprises the pressure transducer that is connected path and operationally measures the interior hydrodynamic pressure of path.This system also comprises the controller that is connected in the pump unit and operationally fluid-responsive pressure and the Operational Limits of regulating the pump unit.
According to another embodiment of the present invention, the pump unit that provides to be arranged in the fluid chamber is provided the method for fluid control pump.The pump unit comprises the path that extends to the pump unit header.This method also comprises forces fluid to flow out by path and mensuration path fluid pressure from the pump unit header.This method yet comprises the Operational Limits of the pump of fluid-responsive pressure adjusting automatically unit.
According to another embodiment of the present invention, fluid controlled pumping system comprises the pump unit that is arranged in the fluid chamber.The pump unit comprises the import that can accept to be sucked from fluid chamber fluid.This system also comprises the valve that is connected in the pump unit slidably.This valve comprises the path of accepting the suction fluid from the pump unit.This valve can also respond the fluid levels that reduces and with respect to the pump cell moving, make the import of the fluid re-circulation of suction to pump so that the interior valve of path is aimed at an opening of pump unit in fluid chamber.
According to another embodiment of the present invention, the fluid levels suction Controlled comprises the progressive hole pump that is provided at setting in the fluid chamber.This pump comprises the rotor/stator part that is arranged on suction streams body and function in the fluid chamber.Rotor/stator partly comprises import and outlet.This method also comprises the valve that is connected in pump.This valve can be accepted from the next fluid of rotor/stator section port.This method also comprises the fluid levels minimizing that automatically responds in fluid chamber and makes fluid from exporting to import by valve recirculation.
According to the present invention's another embodiment again, fluid levels control pump work system comprises the progressive hole pump that is arranged in the fluid chamber.This pump comprises the rotor/stator part that is arranged on suction streams body and function in the fluid chamber.Rotor/stator partly comprises import and outlet.This system also comprises the valve that is connected in pump and is arranged to and is communicated with exporting.But the minimizing of this valve response flow body cavity inner fluid level and make fluid from exporting to import recirculation.
The invention provides several technological merits.For example, in one embodiment of the invention, system monitoring is at the fluid chamber fluid pressure, and pressure is corresponding to the fluid levels of fluid chamber.According to hydrodynamic pressure, the Operational Limits of system control pump unit is lubricated with the normal fluid that guarantees to be in operation.So, when when fluid chamber inner fluid level reduces, the Operational Limits of pump unit can be revised.For example, be the minimizing of response flow body cavity inner fluid level, the motion speed of pump unit also can reduce, and remains essentially in fluid levels constant in the fluid chamber thus the pump unit is provided need lubricated.In addition, the operation of pump unit also can stop according to fluid chamber inner fluid level, is lacking lubricated operation down to prevent the pump unit.
Another technological merit of the present invention comprises provides flushing machine to prevent piling up material in the pump unit inlet.For example, progressive hole pump can be included in the path that extends in the pump rotor downwards and have near the pump inlet of being arranged on outlet.Can be in path outwards provide fluid so that wash away from the import of pump and pile up and the material of accumulation downwards and from the outlet of path, and maintain the state of suspension of material in the fluid of suction if desired.
The present invention provides several advantages in addition.For example, in one embodiment of the invention, the fluid lubrication of holding pump unit is the variation of response flow body cavity inner fluid level, reaches by the fluid pumped import that is recycled to the pump unit.For example, according to embodiment of the present invention, valve is arranged near the of pump unit so that make the fluid re-circulation of being aspirated return the import of pump unit.So, when the fluid levels in fluid chamber reduced, valve made the fluid re-circulation of being aspirated to the import of pump unit move lacking under the fluid lubrication to prevent the pump unit basically.In one embodiment, valve can be to be connected slidably on the pump unit, make thus valve response fluid chamber inner fluid level variation and with respect to the pump cell moving.
Another embodiment of the present invention comprises the reliability that the pump unit improves and does not need the expensive intervention of user.For example, according to embodiment of the present invention, valve slidably is connected on the pump unit, makes the variation of valve response fluid chamber inner fluid level thus and moves up and down.Valve automatically makes the fluid re-circulation of being aspirated or returns the import of pump unit, with the fluid levels that reduces in the lubricated response flow body cavity that guarantees the pump unit.
By following accompanying drawing, description and claim, other technological merit for skilled person in the industry with fairly obvious.
The simple description of accompanying drawing
Be more complete understanding the present invention and its advantage, existing connection with figures is carried out following description, wherein:
Fig. 1 is the diagram of illustrating fluid controlled pumping system according to one embodiment of the invention;
Fig. 2 is the diagram of illustrating fluid controlled pumping system according to another embodiment of the invention;
Fig. 3 is the diagram that is illustrated in the fluid controlled pumping system among Fig. 2 according to one embodiment of the invention, after this system is in the variation of fluid chamber inner fluid level;
Fig. 4 is the flow chart of illustrating according to the fluid levels control pump method of work of embodiment of the present invention.
Concrete mode of execution
Fig. 1 illustrates the diagram of fluid controlled pumping system 10 according to one embodiment of the invention.In the embodiment of Fig. 1, system 10 shows in the application of mining or production of hydrocarbons; But should be appreciated that system 10 also can be used in the application of other pump works.System 10 comprises the pump unit 12 that extends into fluid chamber 13.Fluid chamber 13 generally comprises the fluid that will carry out compression, promote or carry.So, in illustrated embodiment, pump unit 12 extension downwards enters wellhole 16 from surface 14.In this embodiment, the pump unit comprises progressive hole pump 18; But should be appreciated that comprehensive explanation of the present invention can adopt the pump unit 12 of other form.
Pump 18 comprises the base part 20 that is arranged on the surface 14 and is arranged on the interior rotor/stator part 22 of wellhole.Rotor/stator partly comprises the stator 24 that is connected in housing 28 internal surfaces 26.Rotor/stator part 22 also comprises the rotor 30 that is arranged in the stator 24, makes rotor 30 produce the effect of screw taper with respect to the rotation of stator 24, and the fluid 32 that is arranged in chamber 13 or the wellhole 16 of suction or promote is to surface 14 thus.Should be appreciated that in this embodiment, fluid 32 can comprise water, hydrocarbon, drilling slurry, borehole cuttings and other generally are promoted to the material on surface 14 from wellhole 16.But, fluid 32 can comprise the material that other generally run in specific pump work.
Be in operation, the suction side of rotor/stator part 22 is arranged in the wellhole 16, makes rotor 30 upwards extract fluid 32 out by being formed on the import 36 between rotor 30 and the stator 24 with respect to the rotation of stator 24.Fluid 32 partly moves up by rotor/stator and leaves the exhaust end 38 of rotor/stator 22 by being formed between rotor 30 and the stator 24 outlet 40.Upwards move in the annular space 42 that fluid forms between housing 28 and live axle 44.The lower end 46 of live axle 44 is connected the upper end 48 of rotor 30, so that rotor 30 rotatablely moving with respect to stator 24 to be provided.The fluid 32 that moves up by annular space 42 outwards guides to mud sump or other position (obviously not showing) from annular space 42 by exhaust port 50.For example, fluid 32 can be directed to separator (obviously not showing) so that isolate hydrocarbon and/or other material from water by exhaust port 50.But, should be appreciated that fluid 32 also can be directed to other suitable processing system by exhaust port 50.
Wellhole 16 comprises that also guiding gas or other material are from the outside exhaust port 52 of wellhole 16.For example, the gas that is in the wellhole 16 can upwards move by the annular space 54 that forms between the housing 56 of housing 28 and wellhole 16 and base part 20.So, the gas in wellhole 16 can upwards guide trend surface 14 and by exporting 52 burnings or adapting to the requirement of other suitable processing procedures.
As illustrated in Fig. 1, pump unit 12 also comprises the path 60 of the hollow that extends through live axle 4 and rotor downwards.Path 60 comprises near the open end 62 that is arranged on rotor/stator part 22 suction sides 34, and wellhole 16 can be monitored with respect to the fluid depth 64 of pump unit 12.The purposes of path 60 will be described in more detail following.
System 10 also comprises pneumatic pressure source 72, pressure transducer 74, controller 76 and drive motor 78.Pressure source 72 is connected in path 60 by 12 upper ends 80, pump unit, so that the fluid of direct pressurized is downward in path.Pressure source 72 can comprise carbon dioxide, nitrogen, air, methane or other suitable pressure fluid.Pressure transducer 74 also is connected in path 60 so that the pressure in the measurement path 60.
Be in operation, pressure source 72 provides downward pressure fluid in path 60, makes the controlled amount of less relatively pressure fluid or the open end 62 that volume leaves path 60, as show in label 90 places.For example, pressure source 72 can maintain than under the significantly bigger pressure of wellhole 16 internal pressures, and can connect a throttle orifice metering valve 82 in pressure source 72, friction pressure is become roughly can ignore.But, other suitable method and apparatus also can be used for keeping the controlled quatity of pressure fluid or the open end 62 that volume leaves path 60.
Pressure transducer 74 is used to measure the required pressure that pressure fluid is displaced from the open end 62 of path 60 in the path 60.As shown in fig. 1, need generally be equivalent to the pressure that pressure fluid is outwards displaced from the open end 62 of path 60 level or the degree of depth 64 of fluid 32 near 12 imports 36 of pump unit.Therefore, the pressure in path 60 can be used for determining the degree of depth 64 of close pump unit 12 imports 36 fluids 32.
As also illustrating in Fig. 1, pressure transducer 74 is connected in controller 76.Controller 76 can comprise that processor, minicomputer, work station or other form are from the treatment device corresponding to pressure transducer 74 acknowledge(ment) signals of path internal pressure.The signal of accepting from sensor 74 by controller 76 can comprise that continuous signal stream maybe can comprise the periodic data signal.The hydrodynamic pressure of controller 76 in sensor 76 acknowledge(ment) signals and the monitoring path 60.According to path 60 internal pressures, the Operational Limits that controller 76 is regulated pump unit 12.
For example, as illustrated in Fig. 1, controller is connected to the Operational Limits of drive motor with control pump unit 12.As illustrated in Fig. 1, drive motor 78 gives live axle 44 with rotating force by the belt 92 that connects between drive motor 78 and close 12 upper ends, pump unit 80 live axles 4, so that make rotor 30 with respect to stator 24 rotations.So, controller 76 by the rotating force that drive motor 78 gives, controls to the flow rate of the fluid 32 on surface 14 according to the pressure signal control of accepting from pressure transducer 74 thus.For example be in operation, drive motor slave controller 76 acknowledge(ment) signals are to regulate the rotating force that is given driver 44 by drive motor 78.
So, be in operation, the Operational Limits of pump unit 12 can respond the variation of fluid 32 storages in the wellhole 16 and be changed to prevent that basically pump unit 12 from moving under " drying " or unlubricated state.For example, as illustrated in Fig. 1, pressure source 72 provides downward pressure fluid in path 60, and less relatively controlled amount of pressure fluid or volume are flowed out near the open end of suction side 34 at path 60.Be the variation of response in wellhole 16 inner fluids 32 degree of depth 64, needing to order about the pressure that pressure fluid outwards flows out from the open end 62 of path 60 in path 60 also needs to change.According to the variation in pressure in path 60, the Operational Limits that controller 76 is regulated pump unit 12 by drive motor 78.So, when wellhole 16 inner fluids 32 degree of depth 64 reduce, in path 60, need to order about the also correspondingly minimizing of pressure that pressure fluid outwards flows out from the open end 62 of path 60.Be the minimizing of response in path 60 internal pressures, the rotating speed of the live axle 44 that is provided by drive motor 78, the minimizing that causes shifting out fluid 32 flow rate thus from wellhole 16 automatically are provided controller 76.So, the rotating speed of live axle 44 can reduce or stop the minimizing in response to wellhole 16 inner fluid levels, reduces thus from wellhole 16 interior flow rate to last effluent fluid 32, and prevents that pump unit 12 is lacking enough lubricated operation down.In addition, by the Operational Limits of basis in the horizontal adjustment pump unit 12 of wellhole 16 inner fluids 32, the present invention also provides a kind of means of keeping substantial constant fluid 32 levels in wellhole 16.
Therefore, system 10 also can be used to respond in the increase of wellhole 16 inner fluids 32 degree of depth 64 and increase the rotating speed of live axle 44, increases thus from the flow rate of wellhole 16 effluent fluids 32.For example, so, when wellhole 16 inner fluids 32 degree of depth 64 increased, need order about the pressure that pressure fluid outwards flows out from the open end 62 of path 60 also increased.For response increases in path 60 internal pressures, controller 76 is regulated drive motor makes it provide additional rotating force to live axle 44, thus the suction capacity that provides fluid 32 to increase to surface 14.
So, the present invention's controls of convection cell 32 of providing increase according to the storage or the degree of depth 64 from wellhole 16 to surface 14 suctions at wellhole 16 inner fluids.When fluid 32 degree of depth, 64 increases or minimizing, the Operational Limits that controller 76 is regulated pump unit 12 by drive motor 78 causes corresponding increase of live axle 44 rotating speeds or minimizing thus respectively.Therefore the present invention's increase that can respond in wellhole 16 inner fluids 32 levels is used to provide the suction that fluid 32 increases, and/or response makes from the suction of wellhole 16 inner fluids 32 in the minimizing of wellhole 16 inner fluids 32 storages and reduces or stop.
The present invention also can provide the flushing or the mixing of fluid 32 in fluid chamber 13, to prevent basically or to eliminate material and pile up in 12 imports 36 of pump unit.For example, electromagnetic coil valve 96 or other proper device can be used to provide periodic fluid pressure pulses downwards by path 60, and outside near 12 suction sides 34, pump unit, keep material in import 36 neutralizations and in fluid 32, suspend to prevent substance accumulation basically.
Fig. 2 is the diagram of illustrating fluid controlled pumping system 100 according to another embodiment of the present invention, and Fig. 3 is the diagram that is illustrated among Fig. 2 according to the fluid controlled pumping system 100 of embodiment of the present invention, after this system is in wellhole 104 inner fluids 102 levels and reduces.In this embodiment, system 100 comprises that the pump unit 106 that is arranged in the wellhole 104 arrives the surface with the fluid in the suction wellhole 104 102.The pump unit 106 of illustrating in Fig. 2 and 3 comprises progressive hole pump 108.But, should be appreciated that the pump unit 106 that also can use other form according to explanation of the present invention.
Describe as above contact Fig. 1, hole pump 108 is included as the rotor/stator part 110 from wellhole 104 lifting fluid 102 to the surface.For example, as illustrated in Fig. 2 and 3, rotor/stator part 110 comprise be connected in live axle 114 and can be in the stator 116 of pump 108 rotor rotated 112.So, rotor 112 can be pumped the import 118 that fluid enters rotor/stator part 110 with respect to the rotation of stator 116, make rotor 112 promote three-dimensional 102 by rotor/stator part 110, and order about fluid 102 and outwards flow out from the outlet 120 of rotor/stator part 110 with respect to the motion of the screw taper of stator 116.Fluid 102 is moved upwards up to the surface from the exhaust end 122 of rotor/stator part 110 by the annular space 124 between the housing 126 that is formed on live axle 114 and pump unit 106 then.
In this embodiment, system 100 also comprises the valve 140 around the housing 126 that is arranged on pump unit 106 and is arranged near the check valve 142 in 106 suction sides, pump unit.Valve 140 is connected on the housing 126 of pump unit 106 slidably, makes the variation of fluid 102 levels in the wellhole 104 cause valve 140 upwards corresponding or move downward with respect to pump unit 106.For example in this embodiment, valve comprises can be full of fluid, foam or other generally has the inner room 146 of density less than fluid 102 density materials, and valve is floated in fluid 102 with respect to pump unit 106.So, for example, inner room 146 can be full of nitrogen, carbon dioxide, foam or other suitable generally have fluid or the material of density less than fluid 102 density.In Fig. 2 and 3 illustrated embodiments, show two inner rooms 146; But, should be appreciated that and to adopt more or less inner room 146 so that valve obtains to float with respect to pump unit 106.Valve 140 can be fixed together from two or more parts and pump unit 106 to build and form, and perhaps valve 140 can be built the unit that becomes single-piece.For example, check valve 142 can removably be connected on housing 126 (not shown)s, so that hold valve 140 laying for pump unit 106.But, should be appreciated that other suitable combined method also can be used for making valve 140 with respect to 106 location, pump unit.
In Fig. 2 and 3 illustrated embodiments, housing 126 comprises integrally formed block 150 and the following block 152 gone up.Last block 150 and following block 152 make valve 140 for the variation that responds wellhole 104 inner fluids 102 levels with respect to pump unit 106 upper and lower limit movement in the precalculated position.For example, as illustrated in Fig. 2, when level increased in the wellhole 104, valve 140 upwards floated up to the upper end of valve 140 154 arrival blocks 150 with respect to pump unit 106.Similarly, with reference to Fig. 3, be the minimizing of response wellhole 104 inner fluids 102 levels, valve 140 floats downwards with respect to pump unit 106 and reaches block 152 up to the lower end 156 of valve 140.So, as describing in more detail following, block 150 and block 152 are positioned on the pump unit 106, so that make valve 140 be positioned at the precalculated position and promote to aspirate fluid 102 recirculation with respect to pump unit 106.
As illustrated in Fig. 2 and 3, valve 140 comprises the path 160 that extends to valve 140 lower ends 164 from the upper end 162 of valve 140.Path 160 provides the communication that makes fluid pumped 102 all or part of recirculation, and this recirculation is that response is in the minimizing of wellhole 104 inner fluids 102 levels and the import 118 from the exhaust end 122 of rotor/stator part 110 to rotor/stator part 110.Fluid pumped 102 recirculation will be got in touch Fig. 3 below and be described in more detail.
In this embodiment, locking system comprises the locking member 172 by spring 174 inside bias voltages and relative valve 140 trend housings 126.Housing 126 comprises integrally formed depression 176 and 178, and its shape is fit to accept locking member 172 so that make valve 140 be fixed on precalculated position with respect to pump unit 106 releasedly.For example illustrated in Fig. 2, be the increase of response in wellhole 104 inner fluids 102 levels, valve 140 upwards floats the position that is provided with to a top with respect to pump unit 106, locates locking system 170 fixed valve 140 releasedly at this.As will be described in greater detail below, locking system 170 prevents undesirable motion that valve 140 causes owing to secondaiy fluidic 102 variations wavy or in wellhole 104 in wellhole 104 with respect to pump unit 106 basically.Locking system 170 also provides mechanical device for making valve be fixed on desired position with respect to pump unit 106, to reduce process pump unit 106 power demands basically.
As illustrated in Fig. 3, be the minimizing of response wellhole 104 inner fluids 102 levels, valve 140 is moved down into the position that is provided with below with respect to pump unit 106, locates locking system 170 fixed valve 140 releasedly at this.The power that the weight that locking system 170 can be configured as does not have the valve 140 that fluid 102 supported inwardly applies greater than spring 174 causes to response to discharge on the position that the minimizing of wellhole 104 inner fluid levels makes valve be provided with from above thus.Like this, as describing in more detail following, locking system makes valve 140 be fixed on the precalculated position with respect to pump unit 106 so that promote fluid pumped 102 recirculation or stop fluid pumped 102 recirculation.
As illustrated in Fig. 2 and 3, pump unit 106 comprises that the exhaust end 122 of close rotor/stator part 110 is formed on the aperture 190 on housing 126 walls 192.Pump unit 106 comprises that also the import 118 of close rotor/stator part 110 is formed on the aperture 194 on housing 126 walls.Sealing 198, such as O-shape circle elastomeric seal or other suitable Sealing be arranged on aperture 190 and 194 each side in case fluid stopping body 102 with respect to 140 pairs of apertures 190 of valve and 194 undesirable leakages.
Be in operation, impel valve 140 to move upward at the high level of wellhole 104 inner fluids 102 or the increase of level, as illustrated in Fig. 2 with respect to pump unit 106.Locking system fixed valve 140 releasedly is set on the position in the above, the path 160 of valve 140 can not be aimed at aperture 190 and 194, prevent that thus recycled fluid 102 from discharging from the outlet 120 of rotor/stator part 110.Like this, be in operation, rotor 112 inwardly enters the inner region 202 of check valve 142 by import 204 withdrawn fluid 102 of check valve 142 with respect to the rotation of stator 116.The import 118 of fluid 102 further suction rotor/stator parts 110 is also discharged from outlet as described above.The position of She Zhiing in the above, the path 160 of valve 140 is not aimed at aperture 190, makes 102 moving up by annular space 124 to the surface of being aspirated thus.The position that locking system 170 makes valve 140 be fixed in the above and be provided with releasedly is to prevent serving as that response makes valve 140 do undesirable motion in wellhole 104 inner fluids 102 levels less important fluctuation or disturbance.In addition, block 150 prevents motion that valve 140 extensions make progress and the joint that holds locking system.
When the level at wellhole 104 inner fluids 102 reduced, as illustrated in Fig. 3, valve 140 moved down with respect to pump unit 106, and wherein locking system 170 makes valve 140 be fixed on the position that is provided with below releasedly.In the position of the illustrated valve 140 of Fig. 3, aperture 190 is aimed in the import 208 of path 160, accepts all or part of fluid 102 that is aspirated from exhaust end 122 inlet passages 160 of rotor/stator part 110 thus.In addition, valve 140 positions that in Fig. 3, are provided with below illustrated, apertures 194 are aimed in the outlet 210 of path 160, make path 160 inner fluids be communicated with inner region 202 and the import 118 that enters check valve 142 thus.
As illustrated in Fig. 3, the flow rate that upwards arrives surfactant fluid 102 minimizings causes steel ball 200 to move down and be seated on the valve seat area 206 of check valve 142, and the recirculated fluid that prevents from basically thus to accept by aperture 194 is from import 204 discharges.Therefore no matter locking system 170 all provides certain location to valve on opening still is closed position, providing or to stop the recirculation of fluid separately, and reduces or eliminates the vibration of valve 140 with respect to pump unit 106 basically.In addition, locking system reduces process pump unit 106 power demands basically, and for example, rotary rotor 112 power demands are fixed on the position that standard-sized sheet is put releasedly by making valve 140, cause the recirculation of fluid 102 thus.
So, minimizing for response wellhole 104 inner fluid levels, valve 140 moves down with respect to pump unit 106 that recirculation provides the continuous circulation of fluid 102 to operate in " drying " or unlubricated state to prevent pump unit 106 basically to import 118 thus so that all or part of exhaust end from rotor/stator part 110 of the fluid 102 that is aspirated returns the import 118 of rotor/stator part 110.Provide the fluid communication between the exhaust end of the position that is provided with below the path 160 of valve 140 is illustrated and the import 118 in Fig. 3, make the fluid 102 that is aspirated be recycled to the import 118 of rotor/stator part 110 thus, in response to the minimizing of fluid 102 levels in the wellhole 104.The size of path 160 and aperture 190 and 194 can be configured such that all or part of fluid 102 recirculation.
Similarly, when when the level of wellhole 104 inner fluids 102 increases, valve 140 with respect to pump unit 106 be moved upwards up to Fig. 2 illustrated above the position is set.As described above, locking system 170 can be configured to set up the upwards power of guiding for the increase that makes wellhole 104 inner fluid levels impels valve 140, and this power is greater than normally inwardly applying power from spring 174, and the position that valve 140 is provided with from below discharges.When valve 140 moves up with respect to pump unit 106 or floats, path 160 becomes with aperture 190 and 192 and departs from, so fluid 102 is recycled to import 118.Sealing 198 can prevent that basically any undesirable fluid 102 is by aperture 190 and 192.So, the fluid 102 that aspirated with respect to the guiding again that moves upward of pump unit 106 of valve 140 upwards arrives the surface.
So, the invention provides the pump work system of a kind of fluid levels control, can automatically make fluid 102 responses of being aspirated be recycled to the import 118 of pump unit 106 in the variation of wellhole 104 inner fluids 102 levels.Therefore, the present invention provides the reliability bigger than the conventional pump work system by keep the lubricated of pumping unit in the wellhole inner fluid level reduction stage, and increases the life-span of pumping unit thus.Therefore in addition, the present invention does not rely on operator or user's manual intervention and operation independently, and the reliability of raising and easy to use is provided.
Fig. 4 is the flow chart of illustrating according to the fluid levels control pump method of work of embodiment of the present invention.This method is from step 200, and wherein pump unit 12 is arranged in the wellhole 16.As described above, the pump unit can comprise the pump unit of progressive hole pump 18 or other appropriate format.In step 202, pressure source 72 is used for forcing controlled fluid volume to enter wellhole by path 60 downwards.As described above, in the illustrated progressive hole pump 18 of Fig. 1, pressure fluid is compelled to downwards by path 30 inlet passages 60.But, path 60 can be located in other mode or disposes with respect to pump unit 12, and the end 62 of path 60 is arranged near the suction side 34 of pump unit 12.
In step 204, outwards flow out the end 62 that pressure fluid is ordered about near path 60 suction side 34 of pump unit 12.In step 206, signal monitoring the pressure path 60 in of controller 76 by receiving from sensor 74.As described above, sensor 74 is connected in path 60 and measures hydrodynamic pressure corresponding to the path 60 of wellhole 16 inner fluids 12 degree of depth 64.In step 208, whether controller 76 decisions variation in pressure takes place in path 60, and the fluctuating in wellhole 16 inner fluids 32 levels is described thus.Controller can comprise processing instruction and/or program, and path 60 internal pressures are changed, and can guarantee in the fluctuation of fluid-responsive 32 levels must surpass prearranging quatity before the Operational Limits change of pump unit 12.But controller 76 can be configured to automatically change the Operational Limits of adjusting pump unit 12 according to path 60 internal pressures in addition.
In decisive step 210, whether decision increases in path 60 internal pressures.If increase in path 60 internal pressures, this method walked to for 212 steps from 210 steppings, and its middle controller starts the increase of fluid 32 flow rate by pump unit 12.As described above, controller 76 is passed to drive motor 78 to control signal and obtains in the increase aspect the suction streams dose rate with the Operational Limits of regulating the pump unit.Do not increase if pressure takes place, this method walked to for 214 steps from 210 steppings.
In decisive step 214, whether decision reduces in path 60 internal pressures.If reduce in path 60 internal pressures, this method walked to for 218 steps from 216 steppings, and its middle controller starts the minimizing of fluid 32 flow rate by pump unit 12.As described above, controller 76 is passed to drive motor 78 is drawn into the fluid 32 on surface 14 with minimizing flow rate to control signal.Do not reduce if pressure takes place path 60 internal affairs, this method walks to decisive step 220 from 216 steppings, wherein determines whether require the monitoring additional to pressure in path 60.If require additional pressure monitor, this method turned back to for 206 steps.If do not need the monitoring that adds, this method finishes.
So, the invention provides a kind of effective fluid levels control pump work system, make the operation of pump unit eliminate " drying " or unlubricated state basically, increase the service life of pump unit thus.The present invention also provides a kind of fluid levels control pump work system, requires minimum manual operation and monitoring, increases the efficient of pump operation thus.
Though the present invention describes in detail, various changes and modifications can be proposed to the skilled person.Can think that the present invention comprises is in all these changes and improvements in the claims scope.
Claims (92)
1. fluid controlled pumping system comprises:
Be arranged on the pump unit in the fluid chamber, the pump unit has the path that extends into suction side, pump unit;
Be connected in the pressure source of path, can force fluid outside from path near suction side, pump unit;
Be connected in the pressure transducer of path, can measure the hydrodynamic pressure in the path; And
Be connected in the controller of pump unit, can utilize hydrodynamic pressure to regulate the Operational Limits of pump unit.
2. by the described system of claim 1, it is characterized in that the pump unit comprises progressive hole pump.
3. by the described system of claim 2, it is characterized in that Operational Limits comprises the rotational speed of progressive hole pump.
4. by the described system of claim 1, it is characterized in that the path fluid pressure is corresponding to the fluid chamber inner fluid degree of depth.
5. by the described system of claim 1, it is characterized in that the pump unit comprises:
Stator and
Be arranged on the rotor in the stator, rotor can rotate with respect to stator, makes it from the primary importance to the second place with suction fluid in fluid chamber, and wherein path comprises the internal path of rotor.
6. by the described system of claim 1, it is characterized in that pressure source comprises pneumatic pressure source.
7. by the described system of claim 1, it is characterized in that pressure source comprises compressed nitrogen.
8. by the described system of claim 1, it is characterized in that Operational Limits comprises the flow rate of pump unit, but and the minimizing of its middle controller fluid-responsive pressure and reduce flow rate.
9. by the described system of claim 1, it is characterized in that Operational Limits comprises the flow rate of pump unit, but and the increase of its middle controller fluid-responsive pressure and increase flow rate.
10. by the described system of claim 1, it is characterized in that the Operational Limits of controller can regulate pump unit is so that keep the fluid depth of substantial constant in fluid chamber.
11. the method for fluid control pump work comprises:
The pump unit that is arranged in the fluid chamber is provided, and the pump unit has the path that extends into suction side, pump unit;
Force fluid outside from path near suction side, pump unit;
Measure the hydrodynamic pressure in the path; With
Utilize hydrodynamic pressure automatically to regulate the Operational Limits of pump unit.
12., it is characterized in that providing the pump unit to comprise provides progressive hole pump by the described method of claim 11.
13. by the described method of claim 12, it is characterized in that, regulate Operational Limits and comprise the rotational speed of regulating progressive hole pump.
14., it is characterized in that the hydrodynamic pressure of measuring in the path comprises the fluid depth of measuring in the fluid chamber by the described method of claim 11.
15. by the described method of claim 11, it is characterized in that, providing the pump unit to comprise provides progressive hole pump, progressive hole pump comprises stator and rotor, rotor is arranged in the stator, rotor can rotate with respect to stator, so that the suction fluid is from the primary importance to the second place in fluid chamber, and wherein path comprises the internal path of rotor.
16. by the described method of claim 11, it is characterized in that, force fluid to comprise and force pressurized air outside from path.
17. by the described method of claim 11, it is characterized in that, force fluid to comprise and force the compressed nitrogen air outside from path.
18. by the described method of claim 11, it is characterized in that, regulate that Operational Limits comprises the minimizing of fluid-responsive pressure and the flow rate that reduces the pump unit.
19. by the described method of claim 11, it is characterized in that, regulate that Operational Limits comprises the increase of fluid-responsive pressure and the flow rate that increases the pump unit.
20., it is characterized in that, regulate Operational Limits and comprise the flow rate of regulating the pump unit, to keep the fluid levels substantial constant in the fluid chamber by the described method of claim 11.
21. a fluid levels control pump work system comprises:
Be arranged on the progressive hole pump in the fluid chamber, this pump has stator and rotor, and rotor has the internal path that extends to the pump suction side;
Be connected in the pressure source of path, can force fluid outside from path near suction side, pump unit;
Can measure the pressure transducer of path fluid pressure; With
Can utilize the path fluid pressure to regulate the controller of rotary speed of rotator.
22., it is characterized in that controller can also be regulated the rotational speed of rotor to keep the fluid levels substantial constant in the fluid chamber by the described system of claim 21.
23. by the described system of claim 21, it is characterized in that, but the increase of controller fluid-responsive pressure and increase rotary speed of rotator.
24. by the described system of claim 21, it is characterized in that, but the minimizing of controller fluid-responsive pressure and reduce rotary speed of rotator.
25., it is characterized in that pressure source comprises pneumatic pressure source by the described system of claim 21.
26. by the described system of claim 21, it is characterized in that also comprise the motor that is connected in pump, motor can give rotating force to rotor, but and its middle controller transfer control signal to motor to regulate rotating force.
27., it is characterized in that controller can also be regulated the rotational speed of rotor, to prevent the rotation of rotor no fluid lubrication in fluid chamber basically by the described system of claim 21.
28. the method for fluid levels control pump work comprises:
The progressive hole pump that is arranged in the fluid chamber is provided, and this pump has stator and rotor, and rotor has the internal path that extends to the pump suction side;
Force fluid downwards by path and outside from path near the pump suction side;
Measure the hydrodynamic pressure in the path; With
The rotational speed that hydrodynamic pressure in the response path is automatically regulated rotor.
29., it is characterized in that adjusting comprises the rotational speed of regulating rotor by the described method of claim 28, to keep the fluid levels substantial constant in the fluid chamber.
30. by the described method of claim 28, it is characterized in that, regulate the rotational speed that comprises the increase of fluid-responsive pressure and increase rotor.
31. by the described method of claim 28, it is characterized in that, regulate the rotational speed that comprises the minimizing of fluid-responsive pressure and reduce rotor.
32. by the described method of claim 28, it is characterized in that, force fluid to comprise downwards and force pressurized air to pass through path downwards.
33. by the described method of claim 28, it is characterized in that, also comprise utilize motor to give the rotor rotating force and wherein regulate comprise transfer control signal to motor to regulate rotating force.
34., it is characterized in that adjusting comprises the rotational speed of regulating rotor, to prevent the rotation of rotor no fluid lubrication in fluid chamber basically by the described method of claim 28.
35. the method for fluid levels control pump work comprises:
Provide the pump unit that is arranged in the fluid chamber, but this unit has the suction side that the suction chamber inner fluid enters the pump unit, so that from the primary importance to the second place, transmit the chamber inner fluid;
Measure the pressure near suction side, pump unit, this pressure is corresponding to the degree of depth of chamber inner fluid; And
Automatically utilize the pressure of measuring to regulate the flow rate of chamber inner fluid by the pump unit.
36. by the described method of claim 35, it is characterized in that, the pump unit be set comprise progressive hole pump being set and wherein regulating and comprise the rotational speed of utilizing the pressure measured to regulate progressive hole pump rotor.
37. by the described method of claim 36, it is characterized in that, measure pressure and comprise:
Force the fluid of controlled volume outside from path, path has the outlet of suction side, close pump unit; With
In path, measure pressure.
38. by the described method of claim 37, it is characterized in that, force the fluid of controlled volume to comprise that the fluid that forces controlled volume is downward in the internal path of rotor.
39. by the described method of claim 35, it is characterized in that, regulate flow rate and also comprise:
Receive first signal from the pressure transducer of indicated pressure; With
Transmit secondary signal to drive motor, drive motor is connected in the flow rate of pump unit and may command pump unit.
40. by the described method of claim 39, it is characterized in that, provide the pump unit to comprise progressive hole pump is provided and wherein transmit secondary signal comprise transmit secondary signal to drive motor to control the rotational speed of progressive hole pump rotor.
41. a pump work system comprises:
Be arranged on the progressive hole pump in the fluid chamber, this pump has stator and rotor, and rotor has the internal path that extends to the pump suction side;
Be connected in the pressure source of path, can force fluid downward from path near suction side, pump unit;
Can measure the pressure transducer of path fluid pressure, hydrodynamic pressure indication fluid chamber inner fluid level.
42., it is characterized in that by the described system of claim 41, also comprise the controller that is connected in rotor, the rotational speed of its can regulate rotor is to utilize the fluid levels substantial constant in the hydrodynamic pressure maintenance fluid chamber.
43. by the described system of claim 41, it is characterized in that, also comprise the controller that is connected in rotor, but the increase of its fluid-responsive pressure and increase the rotational speed of rotor.
44. by the described system of claim 41, it is characterized in that, also comprise the controller that is connected in rotor, but the minimizing of its fluid-responsive pressure and reduce the rotational speed of rotor.
45. by the described system of claim 41, it is characterized in that, also comprise:
Be connected in the motor of rotor, can give the rotor rotating force; With
But transfer control signal is to the controller of motor, to regulate rotating force according to hydrodynamic pressure.
46., it is characterized in that pressure source comprises pneumatic pressure source by the described system of claim 41.
47. a fluid levels control pump work system comprises:
Be arranged on the pump unit in the fluid chamber, this unit has the import that can accept the fluid that aspirated in fluid chamber; With
Be connected in the valve of pump unit slidably, this valve has the path of acceptance from pump unit outlet suction fluid, wherein, minimizing for the fluid levels in the response flow body cavity, valve makes path aim at the aperture of pump unit with respect to the motion of pump unit, so that the fluid that is aspirated is from exporting to import recirculation.
48., it is characterized in that the pump unit comprises progressive hole pump by the described system of claim 47.
49. by the described system of claim 47, it is characterized in that valve comprises inner room, this inner room is full of and has the fluid of density less than fluid chamber inner fluid density.
50., it is characterized in that valve comprises floating valve by the described system of claim 47.
51. by the described system of claim 47, it is characterized in that, also comprise locking system, make valve be fixed on precalculated position releasedly with respect to the pump unit.
52., it is characterized in that locking system comprises by the described system of claim 51:
Be arranged on the locking member on the valve; With
Be arranged on the depression on the pump unit, be configured as and accept locking member.
53., it is characterized in that also comprise being arranged near the check valve of outlet, the bootable recycled fluid of this check valve is to import by the described system of claim 47.
54., it is characterized in that check valve also can prevent the recycled fluid bypass inlet basically by the described system of claim 53.
55. by the described system of claim 47, it is characterized in that, also comprise near a plurality of blocks that are arranged on the valve, but the motion of this block limiter valve be in the precalculated position with respect to the pump unit.
56. by the described system of claim 47, it is characterized in that, also comprise:
Be arranged on the following block near valve, but the moving downward of following block limiter valve in first precalculated position with respect to the pump unit; With
Be arranged on the last block near valve, but the moving upward of last block limiter valve in second precalculated position with respect to the pump unit.
57., it is characterized in that the location of following block makes the aperture of the via alignment pump unit of valve, in response to the minimizing of fluid chamber inner fluid by the described system of claim 56.
58. a fluid levels control pump work system comprises:
Be arranged on the progressive hole pump in the fluid chamber, this pump has the rotor/stator part, so that the suction fluid is from the primary importance to the second place in fluid chamber, rotor/stator partly has import and outlet; With
Be connected in the valve of pump slidably, wherein, be the minimizing of response flow body cavity inner fluid level, valve makes the path of valve aim at the aperture of pump with respect to the motion of pump, so that fluid is from exporting to import recirculation.
59. by the described system of claim 58, it is characterized in that valve also comprises inner room, this inner room is full of and has the fluid of density less than fluid chamber inner fluid density.
60., it is characterized in that valve comprises floating valve by the described system of claim 58.
61. by the described system of claim 58, it is characterized in that, also comprise locking system, it makes valve be fixed on precalculated position with respect to pump releasedly.
62., it is characterized in that locking system comprises by the described system of claim 58:
Locking member;
Be arranged on the depression on the pump unit, it is configured as can accept locking member; With
But the bias voltage locking member makes the spring of its trend depression.
63., it is characterized in that also comprise being arranged near the check valve of import, the bootable recirculated fluid of check valve is to import by the described system of claim 58.
64., it is characterized in that check valve also can prevent the recirculated fluid bypass inlet basically by the described system of claim 63.
65. by the described system of claim 58, it is characterized in that, also comprise near a plurality of blocks that are arranged on the valve, but the motion of this block limiter valve be in the precalculated position with respect to the pump unit.
66. by the described system of claim 58, it is characterized in that, also comprise:
Be arranged on the following block near valve, but the moving downward of following block limiter valve in first precalculated position with respect to pump; With
Be arranged on the last block near valve, but the moving upward of last block limiter valve in second precalculated position with respect to pump.
67., it is characterized in that the location of following block makes the aperture of the via alignment pump of valve, in response to the minimizing of the fluid in the fluid chamber by the described system of claim 66.
68. by the described system of claim 58, it is characterized in that, also comprise:
Locking member is arranged to inwardly tend to the pump housing from valve bias voltage; With
A plurality of depressions that are arranged on the pump, and be configured as and can accept locking member, depression is positioned on the pump so that fixed valve is in the precalculated position with respect to pump releasedly.
69., it is characterized in that one of depression is set to releasedly with respect to the pump fixed valve, so that path is aimed in the aperture by the described system of claim 68.
70. a fluid levels control pump work system comprises:
Be arranged on the progressive hole pump in the fluid chamber, this pump has the rotor/stator part, so that the suction fluid is from the primary importance to the second place in fluid chamber, rotor/stator partly has import and outlet; With
Be connected in the valve of pump slidably, valve can make the path of valve aim at the aperture of pump, and with the variation of the fluid levels in the response flow body cavity, the bootable fluid of path lacks fluid so that prevent basically in inlet from exporting to import.
71., it is characterized in that also comprise being arranged near the check valve of import, check valve can prevent basically from the bypass of fluid import of path acceptance by the described system of claim 70.
72., it is characterized in that valve comprises floating valve by the described system of claim 70.
73. by the described system of claim 70, it is characterized in that, change the minimizing that comprises fluid levels in the fluid levels.
74. by the described system of claim 70, it is characterized in that valve comprises inner room, inner room is full of and has the fluid of density less than fluid chamber inner fluid density.
75. by the described system of claim 70, it is characterized in that, also comprise locking system, it makes valve be fixed on precalculated position with respect to pump releasedly.
76., it is characterized in that locking system comprises by the described system of claim 75:
Locking member is arranged to inwardly tend to the pump housing from valve its bias voltage; With
A plurality of depressions that are arranged on the pump, and be configured as and can accept locking member, depression is positioned on the pump so that fixed valve is in the precalculated position with respect to pump releasedly.
77. by the described system of claim 70, it is characterized in that, also comprise:
Be arranged on the following block near valve, but the moving downward of following block limiter valve in first precalculated position with respect to pump; With
Be arranged on the last block near valve, but the moving upward of last block limiter valve in second precalculated position with respect to pump.
78., it is characterized in that the location of following block makes the aperture of via alignment pump unit of valve with response valve moving downward with respect to pump by the described system of claim 77.
79., it is characterized in that the location of last block can prevent basically that the fluid inlet passage is with response valve moving upward with respect to pump by the described system of claim 77.
80. a fluid levels control pump work system comprises:
Be arranged on the progressive hole pump in the fluid chamber, this pump has the rotor/stator part, so that aspirate fluid in fluid chamber, rotor/stator partly has import and outlet; With
Be connected in the valve of pump, valve is set to be communicated with exporting, and valve can make fluid from exporting to the minimizing of import recirculation with the fluid levels in the response flow body cavity.
81., it is characterized in that also comprise being arranged near the check valve of import, check valve can prevent the recirculated fluid bypass inlet basically by the described system of claim 80.
82. by the described system of claim 80, it is characterized in that valve comprises floating valve, but the minimizing of floating valve fluid-responsive level and make the pump aperture and the via alignment of valve near outlet, and the bootable recirculated fluid of path arrives import.
83. by the described system of claim 82, it is characterized in that floating valve comprises inner room, inner room comprises and has the fluid of density less than fluid chamber inner fluid density.
84. by the described system of claim 80, it is characterized in that valve is connected in pump slidably, and also comprise near a plurality of blocks that are arranged on the valve, but the block limiter valve move to precalculated position with respect to pump.
85., it is characterized in that a plurality of blocks comprise by the described system of claim 84:
Last block, but the moving upward in first precalculated position with respect to pump of limiter valve are with the increase of response flow body cavity inner fluid level; With
Following block, but the moving downward in second precalculated position with respect to pump of limiter valve are with the minimizing of response flow body cavity inner fluid level.
86. the method for fluid levels control pump work comprises:
The progressive hole pump that is arranged in the fluid chamber is provided, and this pump has the rotor/stator part, so that aspirate fluid in fluid chamber, rotor/stator partly has import and outlet;
The valve that is connected in pump is provided, and valve can be accepted from the next fluid of rotor/stator section port; With
Make from the fluid that exports to import and pass through valve recirculation, with the minimizing of the fluid levels in the response flow body cavity.
87., it is characterized in that recirculation comprises that the path that makes valve aims at the aperture of pump by the described method of claim 86, the aperture is arranged near the outlet.
88. by the described method of claim 86, it is characterized in that providing valve to comprise provides floating valve, but the variation of the fluid levels in the floating valve response flow body cavity and moving with respect to pump.
89. by the described method of claim 88, it is characterized in that, also comprise providing being arranged near a plurality of blocks of valve, but the motion of block limiter valve be on the precalculated position with respect to pump.
90. by the described method of claim 86, it is characterized in that, provide a plurality of blocks to comprise:
First block is provided, but the moving upward of its limiter valve in first precalculated position with respect to pump, with the increase of response flow body cavity inner fluid level; With
Second block is provided, but the moving downward of its limiter valve in second precalculated position with respect to pump, with the minimizing of response flow body cavity inner fluid level.
91. by the described method of claim 86, it is characterized in that recirculation comprises recirculated fluid, move to prevent that basically pump lacks under the fluid lubrication in fluid chamber.
92. by the described method of claim 86, it is characterized in that providing valve to comprise provides the valve that is connected in pump slidably, and also comprise locking system is provided, its releasedly fixed valve in precalculated position with respect to pump.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/841,773 | 2001-04-24 | ||
| US09/841,748 | 2001-04-24 | ||
| US09/841,748 US6497556B2 (en) | 2001-04-24 | 2001-04-24 | Fluid level control for a downhole well pumping system |
| US09/841,773 US6604910B1 (en) | 2001-04-24 | 2001-04-24 | Fluid controlled pumping system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1503879A true CN1503879A (en) | 2004-06-09 |
Family
ID=27126283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA028085612A Pending CN1503879A (en) | 2001-04-24 | 2002-04-23 | Fluid controlled pumping system and method |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1387959A2 (en) |
| JP (1) | JP2004537669A (en) |
| CN (1) | CN1503879A (en) |
| CA (1) | CA2441307A1 (en) |
| MX (1) | MXPA03009673A (en) |
| NO (1) | NO20034736L (en) |
| RU (1) | RU2003134142A (en) |
| WO (1) | WO2002086322A2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100501628C (en) * | 2005-09-30 | 2009-06-17 | Smc株式会社 | Constant temperature liquid circulating device with external tubing protecting device |
| CN104421148A (en) * | 2013-08-30 | 2015-03-18 | Pcm公司 | Helical rotor, progressing cavity pump and pumping device |
| CN104633425A (en) * | 2015-02-11 | 2015-05-20 | 胜利油田德利实业有限责任公司 | Downhole mechanical speed reducer lubricating device |
| CN114109815A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Device and method for monitoring pump front pressure of microminiature aviation electric fuel pump |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4836046B2 (en) * | 2005-02-24 | 2011-12-14 | Ｈｏｙａ株式会社 | Intraocular lens insertion device |
| RU2313657C1 (en) * | 2006-03-21 | 2007-12-27 | Шлюмбергер Текнолоджи Б.В. | Downhole system and bottomhole hydraulic machine for fluid production |
| DE102010053901A1 (en) * | 2010-12-09 | 2012-06-14 | Netzsch Oilfield Products Gmbh | Modular torque protection |
| EA201592080A1 (en) * | 2013-05-01 | 2016-05-31 | Шлюмбергер Текнолоджи Б.В. | RESTORATION OF DISTURBED COMMUNICATION IN THE WELL |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4125163A (en) * | 1977-12-02 | 1978-11-14 | Basic Sciences, Inc. | Method and system for controlling well bore fluid level relative to a down hole pump |
| FR2551804B1 (en) * | 1983-09-12 | 1988-02-05 | Inst Francais Du Petrole | DEVICE FOR USE IN PARTICULAR FOR PUMPING A VERY VISCOUS FLUID AND / OR CONTAINING A SIGNIFICANT PROPORTION OF GAS, PARTICULARLY FOR THE PRODUCTION OF OIL |
| DE3409970C1 (en) * | 1984-03-19 | 1985-07-18 | Norton Christensen, Inc., Salt Lake City, Utah | Device for conveying flowable substances |
| US5782608A (en) * | 1996-10-03 | 1998-07-21 | Delta-X Corporation | Method and apparatus for controlling a progressing cavity well pump |
| AU9575598A (en) * | 1997-09-24 | 1999-04-12 | Edward A. Corlew | Multi-well computerized control of fluid pumping |
| US5941305A (en) * | 1998-01-29 | 1999-08-24 | Patton Enterprises, Inc. | Real-time pump optimization system |
-
2002
- 2002-04-23 CA CA002441307A patent/CA2441307A1/en not_active Abandoned
- 2002-04-23 JP JP2002583819A patent/JP2004537669A/en active Pending
- 2002-04-23 MX MXPA03009673A patent/MXPA03009673A/en unknown
- 2002-04-23 RU RU2003134142/06A patent/RU2003134142A/en not_active Application Discontinuation
- 2002-04-23 CN CNA028085612A patent/CN1503879A/en active Pending
- 2002-04-23 WO PCT/US2002/012751 patent/WO2002086322A2/en not_active Application Discontinuation
- 2002-04-23 EP EP02726793A patent/EP1387959A2/en not_active Withdrawn
-
2003
- 2003-10-23 NO NO20034736A patent/NO20034736L/en not_active Application Discontinuation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100501628C (en) * | 2005-09-30 | 2009-06-17 | Smc株式会社 | Constant temperature liquid circulating device with external tubing protecting device |
| CN104421148A (en) * | 2013-08-30 | 2015-03-18 | Pcm公司 | Helical rotor, progressing cavity pump and pumping device |
| CN104421148B (en) * | 2013-08-30 | 2017-12-08 | Pcm技术公司 | Helical rotor, screw pump and pumping installations |
| CN104633425A (en) * | 2015-02-11 | 2015-05-20 | 胜利油田德利实业有限责任公司 | Downhole mechanical speed reducer lubricating device |
| CN114109815A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Device and method for monitoring pump front pressure of microminiature aviation electric fuel pump |
| CN114109815B (en) * | 2021-11-05 | 2023-10-20 | 中国航发西安动力控制科技有限公司 | Device and method for monitoring front pressure of miniature aviation electric fuel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2003134142A (en) | 2005-05-20 |
| MXPA03009673A (en) | 2004-05-24 |
| NO20034736D0 (en) | 2003-10-23 |
| JP2004537669A (en) | 2004-12-16 |
| WO2002086322A3 (en) | 2003-04-17 |
| NO20034736L (en) | 2003-12-19 |
| WO2002086322A2 (en) | 2002-10-31 |
| EP1387959A2 (en) | 2004-02-11 |
| CA2441307A1 (en) | 2002-10-31 |
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