CN104533350B - Well liquid drives oil pumping system - Google Patents
Well liquid drives oil pumping system Download PDFInfo
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- CN104533350B CN104533350B CN201410795243.9A CN201410795243A CN104533350B CN 104533350 B CN104533350 B CN 104533350B CN 201410795243 A CN201410795243 A CN 201410795243A CN 104533350 B CN104533350 B CN 104533350B
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- 239000007788 liquid Substances 0.000 title claims abstract description 129
- 238000005086 pumping Methods 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 97
- 230000015572 biosynthetic process Effects 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 description 8
- 230000008676 import Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Reciprocating Pumps (AREA)
Abstract
Well liquid of the invention drives oil pumping system, including first liang of position and four-way reversing valve and second liang of position and four-way reversing valve, 3rd port and the 4th port of wherein first liang position and four-way reversing valve connect with second liang of position and four-way reversing valve, first liang of second port of position and four-way reversing valve replaces communication with the 3rd port and the 4th port, the high voltage power liquid entered through second port enters second liang of position and four-way reversing valve through the 3rd port or the 4th port again, promote second liang of valve element movement of position and four-way reversing valve, the 8th port of second liang of position and four-way reversing valve is set to replace communication with its fifth port and the 6th port, the high voltage power liquid entered through the 8th port is guided to enter the 3rd chamber or the 4th chamber through fifth port or the 6th port again, promote piston movement.The present invention also solves the problem that prior art can only rely on one-stroke, i.e. upstroke to pump while piston load equalization problem is solved, and greatly improves production efficiency.
Description
Technical field
Oil pumping system is driven the invention belongs to exploitation of oil-gas field artificial lift technology field, more particularly to well liquid.
Background technology
Existing artificial lift technology can be divided into be had bar to lift and lifts two major classes without bar.The hydraulic piston applied in oil field
Pump recovers the oil and belongs to without bar lifting, and hydraulic pump system is a kind of hydraulicdriven without bar pumping equipment, is a kind of being used for from oil
The equipment that oil is lifted in well, it is to pump into down-hole drive through oil pipe or designated lane after power fluid is pressurized by Surface power drive pump
Piston and master control guiding valve in oil cylinder, make fluid motor pump, so as to produced liquid in oil well is given rise into ground.
Whether mixed with weary power fluid according to production fluid, hydraulic pump system includes closed system and open system.It is right
In enclosed hydraulic piston pump, weary power fluid and production fluid return to ground by a single runner respectively, although avoid oil
Water separates link, but due to increased a runner, down-hole string structure becomes complicated, and cost is also higher than open system, causes
It is set to be subject to certain restrictions using scope.Therefore hydraulic pump system using it is more be open system.
Refer to Fig. 1.The general principle of open type hydraulic piston pump is：High voltage power liquid enters lower cylinder 15 by passage 13,
Act on the annular end face of the lower end of piston 11, then high voltage power liquid enters upper cylinder half 19 by passage 17 again, acts on piston
On 11 upper surface.Active area due to piston upper surface active area more than lower surface, therefore in the upper and lower end of piston 11
Face produces pressure difference, piston 11 to drive plunger 23 to move downward by piston rod 21 affixed therewith.The upper and lower part of piston rod 21
Control flume 29 and control flume 31 are not offered, and when piston rod 21 is moved to close to bottom dead centre, the control flume 29 on top is linked up
The upper chamber 25 of master control guiding valve 33 and lower chambers 27, make high voltage power liquid enter master control guiding valve 33 through control flume 29 by upper chamber 25
Lower chambers 27.Due to the area of the area more than upper surface of the lower surface of master control guiding valve 33, the side in the presence of high voltage power liquid
Pressure difference is produced, master control guiding valve 33 is pushed to top dead-centre, so as to complete down stroke.Complete the hydraulic piston pump after down stroke
Structural representation refers to Fig. 2.
Master control guiding valve 33 is in top dead-centre, and upper cylinder half 19 is by the annular space 37 at passage 17 and the middle part of master control guiding valve 33 with
The oil-producing chamber 39 in portion is linked up.Conveying high-pressure power fluid in the downward cylinder 15 of passage 13 is continued on through, because master control guiding valve 33 is in upper dead
Point position, passage 35 is blocked by master control guiding valve 33 between lower cylinder 15 and passage 17, high voltage power liquid is cannot be introduced into upper cylinder half 19, living
Plug 11 drives plunger 23 to move upwards by piston rod 21 affixed therewith, and production fluid is extracted out；At the same time, the piston of rising
11 by upper cylinder half 19 weary power fluid extrusion, after mixing with production fluid together with given rise to ground.When piston rod 21 is close to upper dead
During point, the control flume 31 positioned at the bottom of piston rod 21 links up the lower chambers 27 of master control guiding valve 33 and oil-producing chamber 39, the quilt of master control guiding valve 33
Bottom dead centre is pushed into, upstroke terminates, and restarts down stroke.
The problem that above-mentioned open system is present is：During upstroke and down stroke, the suffered load of piston is serious uneven
Weighing apparatus, upstroke power fluid pressure is high, and speed uplink is slow；Down stroke power fluid pressure is low, and downstream rate is fast, thus results in system pressure
Fluctuation, greater impact is caused to high voltage power liquid transfer pipeline, high voltage power liquid transfer pipeline is burst when serious.Make
The reason for into load imbalance is：Upstroke is oil-producing process, in the presence of high voltage power liquid of the piston 11 in lower cylinder 25 on
OK, piston rod 21 and the grade hydraulic piston pump equipment of itself of plunger 23 are not only lifted, the production fluid of extraction is also lifted, therefore on
The suffered load of reciprocating piston 11 is larger；And down stroke not oil-producing, high voltage power liquid enters the upper cylinder half 19 and lower cylinder of piston 11 simultaneously
In 15, promote the equipment such as piston rod 21 and plunger 23 descending with differential fashion, the speed of service is accelerated, and these parts have itself
Gravitional force, so that the suffered load very little of piston 11 during down stroke.
The content of the invention
There is unbalanced defect for open type hydraulic pump system upstroke and the down stroke load of prior art, this
Invention provides a kind of well liquid and drives oil pumping system, and technical scheme is as follows：
Well liquid drives oil pumping system, including：
With hollow chamber and can be lowered into the oil pumping pump core body in precalculated position in the sleeve pipe of oil-producing well, the middle cavity
Interior is provided with first piston and second piston that can be movable within, by living between the first piston and the second piston
Stopper rod is connected, and the first piston is close to the well head of the oil-producing well, and the second piston away from the well head, and described first
Piston forms closed first chamber near the end face of the well head with the oil pumping pump core body, and the second piston is away from institute
The end face and the oil pumping pump core body for stating well head form closed second chamber；
The first chamber is communicated with the first pipeline and the second pipeline, and the second chamber is communicated with the 3rd pipeline and the 4th
Pipeline, when the oil pumping pump core body is lowered into oil-producing well, the stratum liquid energy in stratum is through first pipeline and described the
Three pipelines are separately flowed into the first chamber and the second chamber, are entered into the first chamber and the second chamber
Stratum liquid energy flowed out through second pipeline and the 4th pipeline respectively；
Check valve is provided with first pipeline, the second pipeline, the 3rd pipeline and the 4th pipeline, wherein described first
The formation fluid that check valve on pipeline and the 3rd pipeline can prevent from coming into the first chamber and the second chamber is returned
Stream；Check valve on second pipeline and the 4th pipeline can prevent from having flowed out the first chamber and second chamber
The formation fluid backflow of room；
It is arranged in the hollow chamber and changing with first liang of position and four-way reversing valve and second liang of position and four-way reversing valve
To mechanism, the changement is arranged between the first piston and the second piston, and the first piston is away from described
The end face of well head forms the 3rd closed chamber with the changement and oil pumping pump core body, and the second piston is near described
The end face of well head forms the 4th closed chamber with the changement and oil pumping pump core body；
First liang of position and four-way reversing valve includes first port, second port, the 3rd port and the 4th port, described the
Two-port netwerk can replace communication with the 3rd port and the 4th port, and when the second port and the 3rd port and
During one of communication in the 4th port, another in the 3rd port and the 4th port can be with described
Single port is linked up；
The valve element of first liang of position and four-way reversing valve is connected with connecting rod, and the connecting rod two ends extend respectively to the described 3rd
In chamber and the 4th chamber, make the first piston and second piston that the connecting rod can be promoted in moving process, drive described
First liang of valve element movement of position and four-way reversing valve；
Second liang of position and four-way reversing valve includes fifth port, the 6th port, the 7th port and the 8th port, described the
Eight ports can replace communication with the fifth port and the 6th port, and when the 8th port and the fifth port and
During one of communication in the 6th port, another in the fifth port and the 6th port can be with described
Seven ports are linked up；
3rd port and the 4th port are connected with second liang of position and four-way reversing valve, through the 3rd port and
Four ports can be to high voltage power liquid be flowed into, to promote second liang of position and four-way reversing valve in second liang of position and four-way reversing valve
Valve element movement, the fifth port and the 3rd chamber, the 6th port and the 4th chamber.
Well liquid as described above drives oil pumping system, including first tubing string, and the oil pumping pump core body energy sealing shroud is mounted in
In the first tubing string, axially arranged there are first passage and second channel, first passage along its in the tube wall of the first tubing string
First pipeline and stratum are linked up, so that the stratum liquid energy in stratum is successively through the first passage and the first pipeline stream
Enter in the first chamber, the formation fluid in stratum is entered in the second chamber by the 3rd pipeline, described second leads to
Road is connected with the second port and the 8th port, and the first tubing string radially offers the connection second channel
Radial passage, the high voltage power liquid energy in the first tubing string is entered into the second channel through the radial passage.
Well liquid as described above drives oil pumping system, and the oil pumping pump core body can be lowered into product by the first tubing string
In the sleeve pipe of oil well, the first annular space is formed between the first tubing string energy and described sleeve pipe, below the oil pumping pump core body
Packer is connected with first tubing string, the packer separates first annular space with stratum, the first port, the 7th
Port, the second pipeline and the 4th pipeline are connected with first annular space.
Well liquid as described above drives oil pumping system, axially arranged has threeway along its in the tube wall of the first tubing string
Road, the first port, the 7th port, the second pipeline and the 4th pipeline are connected with the third channel.
Well liquid as described above drives oil pumping system, and second tubing string, the oil pumping pump core are arranged with the first tubing string
This physical efficiency sealing shroud in the second tubing string, first tubing string between the oil pumping pump core body and the well head with it is described
The second annular space is formed between second tubing string, second annular space is connected with the third channel.
Well liquid as described above drives oil pumping system, including above ground portion, and the above ground portion includes：
Production fluid export pipeline, the production fluid export pipeline is connected with the first annular space/the second annular space；
Three-phase separating device, fluid reservoir, booster pump, the high voltage power liquid feed-line, the three phase separation being sequentially connected
Device is connected with the production fluid export pipeline, and the part production fluid in the production fluid export pipeline is filled through the three phase separation
After putting separating treatment, the liquid for obtaining enters the fluid reservoir, after the liquid in the fluid reservoir is pressurized through the booster pump, warp
High voltage power liquid feed-line is delivered in the first tubing string/second tubing string.
Well liquid as described above drives oil pumping system, and check valve is provided with the high voltage power liquid feed-line, described
Check valve can prevent from coming into the high voltage power liquid backflow in the first tubing string/second tubing string.
Well liquid as described above drives oil pumping system, including safety valve, and the safety valve is arranged on the fluid reservoir and institute
State on the pipeline that the high voltage power liquid feed-line of ball-and-seat upstream is connected.
Technical scheme more than, the beneficial effects of the present invention are：Set by first liang of position and four-way reversing valve and the
Two liang of changements of position and four-way reversing valve, first piston and second piston promote the first two four-way elder generations in moving process
The valve element of pilot valve, makes the first two second ports of four-way pilot valve, i.e. high voltage power liquid import can be with the 3rd port and
Four ports are alternately linked up, so that guide high voltage power liquid to enter second liang of position and four-way reversing valve, to promote described the second two four
The valve element movement of logical reversal valve, makes second liang of the 8th port of position and four-way reversing valve, the i.e. import of high voltage power liquid can be with the 5th
Port and the 6th port are alternately linked up, so that guide high voltage power liquid to alternately enter the 3rd chamber and the 4th chamber, and then alternately
Promote first piston 73 and second piston 75 to move, and by the formation fluid extrusion in first chamber and second chamber, so regardless of
Be upstroke or down stroke, can produce liquid, solve piston load equalization problem while, also solve prior art only according to
By the problem that one-stroke, i.e. upstroke could pump, greatly improve production efficiency.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in embodiment of the present invention, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiment party of the invention
Case, for those of ordinary skill in the art, on the premise of performing creative labour is not paid, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of the open type hydraulic piston pump of prior art；
Fig. 2 is the structural representation of the open type hydraulic piston pump of the completion down stroke shown in Fig. 1；
Fig. 3 is a kind of implementation method structural representation that well liquid of the invention drives oil pumping system；
Fig. 4 is the partial enlarged drawing of the oil pumping pump core body shown in Fig. 3；
Fig. 5 is first liang of structural representation of position and four-way reversing valve shown in Fig. 4；
Fig. 6 is the structural representation of another working condition of first liang of position and four-way reversing valve shown in Fig. 5；
Fig. 7 is second liang of structural representation of position and four-way reversing valve shown in Fig. 4；
Fig. 8 is the annexation schematic diagram of first liang of position and four-way reversing valve and second liang of position and four-way reversing valve；
Fig. 9 is the implementation method structural representation of changement conveying high-pressure power fluid of the present invention and output formation fluid；
Figure 10 is the another embodiment structural representation that well liquid of the invention drives oil pumping system；
Figure 11 is that the well liquid shown in Figure 10 drives oil pumping system changement conveying high-pressure power fluid and output formation fluid
Another embodiment structural representation.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Please also refer to Fig. 3 and Fig. 4.Well liquid drives oil pumping system, including：
With hollow chamber 59 and the oil pumping pump core body 61 in precalculated position in the sleeve pipe 41 of oil-producing well can be lowered into, it is described
Be provided with hollow chamber 59 can be movable within first piston 73 and second piston 75, the first piston 73 and described the
Connected by piston rod 77 between two pistons 75, the well head of the close oil-producing well of the first piston 73, and the second piston
75 form closed near the end face of the well head away from the well head, the first piston 73 with the oil pumping pump core body 61
First chamber 79, the second piston 75 forms closed second away from the end face of the well head with the oil pumping pump core body 61
Chamber 81；The first chamber 79 is communicated with the first pipeline 63 and the second pipeline 65, and the second chamber 81 is communicated with the 3rd pipe
The pipeline 69 of road 67 and the 4th, in the oil pumping pump core body 61 is lowered into oil-producing well, stratum liquid energy in stratum is through described the
One pipeline 63 and the 3rd pipeline 67 are separately flowed into the first chamber 79 and the second chamber 81, enter into described
Stratum liquid energy in one chamber 79 and the second chamber 81 flows out through second pipeline 65 and the 4th pipeline 69 respectively；
Check valve is provided with first pipeline 63, the second pipeline 65, the 3rd pipeline 67 and the 4th pipeline 69, wherein described first
Check valve on the pipeline 67 of pipeline 63 and the 3rd can prevent from coming into the first chamber 79 and the second chamber 81
Formation fluid flows back；Check valve on second pipeline 65 and the 4th pipeline 69 can prevent from having flowed out the first chamber
79 and the second chamber 81 formation fluid backflow；It is arranged in the hollow chamber 59 and with first liang of position and four-way reversing valve
83 and second liang of changement of position and four-way reversing valve 85, the changement is arranged at the first piston 73 and described second
Between piston 75, the first piston 73 is formed away from the end face of the well head with the changement and oil pumping pump core body 61
The 3rd closed chamber 87, end face and the changement and oil pumping pump core body of the second piston 75 near the well head
61 form the 4th closed chamber 89；First liang of position and four-way reversing valve 83 includes first port, second port, the 3rd port
With the 4th port, the second port can replace communication with the 3rd port and the 4th port, and when second end
Mouthful with the 3rd port and the 4th port in one of communication when, in the 3rd port and the 4th port
Another can be linked up with the first port；The valve element of first liang of position and four-way reversing valve 83 is connected with connecting rod 91, described
The two ends of connecting rod 91 are extended respectively in the 3rd chamber 87 and the 4th chamber 89, make the first piston 73 and second piston 75
The connecting rod 91 can be promoted in moving process, the valve element movement of first liang of position and four-way reversing valve 83 is driven；Described second
Two position and four-way reversing valves 85 include fifth port, the 6th port, the 7th port and the 8th port, the 8th port can with it is described
Fifth port and the 6th port are alternately linked up, and when in the 8th port with the fifth port and the 6th port
One of communication when, another in the fifth port and the 6th port can be linked up with the 7th port；Institute
State the 3rd port and the 4th port to be connected with second liang of position and four-way reversing valve 85, through the 3rd port and the 4th port energy
To high voltage power liquid is flowed into second liang of position and four-way reversing valve 85, to promote the valve of second liang of position and four-way reversing valve 85
Core is moved, and the fifth port is connected with the 3rd chamber 87, and the 6th port connects with the 4th chamber 89.
The beneficial effects of the invention are as follows：Set by first liang of position and four-way reversing valve 83 and second liang of position and four-way reversing valve 85
Changement, first piston 73 and second piston 75 drive the first two four-ways to change in moving process by promoting connecting rod 91
To the valve element of valve 83, make first liang of second port of position and four-way reversing valve 83, the i.e. import of high voltage power liquid can be with the 3rd port
Alternately linked up with the 4th port, so that guide high voltage power liquid to enter second liang of position and four-way reversing valve 85, to promote the second two
The valve element movement of four-way reversing valve 85, makes second liang of the 8th port of position and four-way reversing valve 85, i.e., the import of high voltage power liquid can
Replace communication with fifth port and the 6th port, so as to guide high voltage power liquid to alternately enter the 3rd chamber 87 and the 4th chamber
89, and then alternately promote first piston 73 and second piston 75 to move, by the formation fluid in first chamber 79 and second chamber 81
Extrusion, so either upstroke or down stroke, can produce liquid, while piston load equalization problem is solved, also solve
Prior art relies only on the problem that one-stroke, i.e. upstroke could pump, and greatly improves production efficiency.
Main thought of the invention is using the principle of two position and four-way reversing valves.Under external force promotion, two four-way commutations
The valve element of valve is in different positions, so that different ports are linked up, specifically please also refer to Fig. 5 and 6.The first two four-ways
Reversal valve 83 has four ports, respectively first port 97, second port 99, the 3rd port 93, the 4th port 95.Specifically
Ground, first port 97 is weary power fluid liquid return hole, and second port 99 is high voltage power liquid import, by it to the first two four-ways
Conveying high-pressure power fluid in reversal valve 83, the 3rd port 93, the 4th port 95 are working hole, itself and second liang of position and four-way reversing valve
85 connections.This four ports can connect with the valve element movable passageway 98 in first liang of position and four-way reversing valve 83, in valve element movement
Valve element 90 is provided with passage 98, three shoulders are provided with valve element 90；When mobile valve element 90 is driven at three shoulders thereon
When different positions, four ports will be in different communication states, realize commutation；And second port 99 all the time with the 3rd end
Mouthfuls 93 and the 4th one of communication in port 95, and in the 3rd port 93 and the 4th port 95 another then with first end
Mouth 97 is connected.Specifically, in referring to Fig. 5, when valve element 90 is in it is relatively upper when, second port 99 and the ditch of the 4th port 95
Logical, then first port 97 is linked up with the 3rd port 93；When external force promotion valve element 90 is displaced downwardly to is at relatively the next, please join
See Fig. 6, now second port 99 is linked up with the 3rd port 93, then first port 97 is linked up with the 4th port 95.
Refer to Fig. 5 or Fig. 6.It is affixed on first liang of valve element of position and four-way reversing valve 83 90 in embodiment of the present invention
Have the connecting rod 91 of certain length, the two ends of connecting rod 91 are extended respectively in the 3rd chamber 87 and the 4th chamber 89, when first piston 73,
Second piston 75 can promote first liang of valve element of position and four-way reversing valve 83 90 to move, so as to realize when mobile by connecting rod 91
Commutation.
Please also refer to Fig. 4 and Fig. 7.Second liang of position and four-way reversing valve 85 and first liang of structure of position and four-way reversing valve 83 with
And realize that the operation principle of commutation is similar to, difference is second liang of not affixed connecting rod of the valve element of position and four-way reversing valve 85 100.Second
Two position and four-way reversing valves 85 equally have four ports, respectively fifth port 101, the 6th port 102, the 7th port 103, the
Eight ports 104.Specifically, fifth port 101, the 6th port 102 are working hole, its respectively with the 3rd chamber 87, the 4th chamber
89 connections, the 7th port 103 is weary power fluid liquid return hole, and the 8th port 104 is high voltage power liquid import, by it to second liang
Conveying high-pressure power fluid in position and four-way reversing valve 85, second liang of valve element of position and four-way reversing valve 85 100 in moving process, two
End forms upper power cavity 106 and lower power cavity 107, and upper power cavity 106 and lower power cavity 107 are second liang of position and four-way reversing valve 85
Valve element movable passageway 105 a part.
The annexation of first liang of position and four-way reversing valve 83 and second liang of position and four-way reversing valve 85 refers to Fig. 8.3rd end
The port 95 of mouth 93 and the 4th is connected by upper power cavity 106 and lower power cavity 107 with second liang of position and four-way reversing valve 85 respectively, is passed through
The high voltage power liquid of the second port 99 flows out from the 3rd port 93 or the 4th port 95, into upper power cavity 106 or lower dynamic
Power chamber 107, so as to promote second liang of valve element of position and four-way reversing valve 85 100 to move, makes the 8th port 104 and fifth port 101
Alternately linked up with the 6th port 102, realize commutation.
Therefore, first liang of position and four-way reversing valve 83 and second liang of position and four-way reversing valve 85 realize the outer of respective valve element movement
Power is different, and first liang of valve element of position and four-way reversing valve 83 90 is promoted by first piston 73 or second piston 75, and second liang
The valve element 100 of position and four-way reversing valve 85 is promoted by high voltage power liquid.
The present invention to changement conveying high-pressure power fluid and output formation fluid implementation method be：
Please also refer to Fig. 3, Fig. 4, Fig. 7 and Fig. 9.
Including first tubing string 47, the oil pumping pump core body 61 can sealing shroud in the first tubing string 47, described the
In the tube wall of one tubing string 47 along its it is axially arranged have first passage 64 and second channel 56, first passage 64 links up first pipe
Road 63 and stratum, so that the stratum liquid energy in stratum flows into described through the first passage 64 and first pipeline 63 successively
79 in one chamber, formation fluid in stratum is entered in second chamber 81 by the 3rd pipeline 67, the second channel 56 with it is described
Second port 99 is connected with the 8th port 104, and the first tubing string 47 radially offers the connection second channel 56
Radial passage 58, the high voltage power liquid energy in the first tubing string 47 enters into the second channel through the radial passage 58
In 56, the high voltage power liquid entered into second channel 56 respectively enters first by the port 104 of second port 99 and the 8th again
Two position and four-way reversing valves 83 and first liang of position and four-way reversing valve 85.
The oil pumping pump core body 61 can be lowered into the sleeve pipe 41 of oil-producing well by the first tubing string 47, and described first
Tubing string 47 can form the first annular space 45 and described sleeve pipe 41 between, connect in the first tubing string 47 of the lower section of oil pumping pump core body 61
Packer 57 is connected to, the packer 57 separates first annular space 45 with stratum, the first port 97, the 7th port
103rd, the second pipeline 65 and the 4th pipeline 69 are connected with first annular space 45.
The course of work of the implementation method is：
When first piston 73 promotes connecting rod 91 to bottom dead centre, second port 99 is linked up with the 3rd port 93, the 4th port
95 link up with first port 97, and the high voltage power liquid in second channel 56 is directed into through the port 93 of second port 99 and the 3rd
Second liang of upper power cavity 106 of position and four-way reversing valve 85, promotes second liang of valve element of position and four-way reversing valve 85 100 descending, makes the
Eight ports 104 are linked up with fifth port 101, and the 6th port 102 is linked up with the 7th port 103, so as to by second channel 56
High voltage power liquid leads into the 3rd chamber 87 through the 8th port 104 and fifth port 101, and then promotes on first piston 73
OK.Up first piston 73 is up by the drive of piston rod 77 second piston 75, and the liquid in first chamber 79 is extruded, warp
Second pipeline 65 enters in the first annular space 45, and the space of second chamber 81 increase, the formation fluid in stratum enters through the 3rd pipeline 67
In second chamber 81, the weary power fluid in the 4th chamber 89 enters the first annular space 45 through the 6th port 102 and the 7th port 103
In, after mixing with the liquid discharged from first chamber 79 together with export.The process is upstroke.
During upstroke, can be contacted with the connecting rod 91 after the motion certain distance of second piston 75, so as to drive institute
State connecting rod 91 up together, when the second piston 75 promotes the connecting rod 91 to top dead-centre, the second port 99 and institute
State the 4th port 95 to link up, the high voltage power liquid in second channel 56 is directed into through second port 99 and the 4th port 95
Two liang of lower power cavities 107 of position and four-way reversing valve 85, promote second liang of valve element of position and four-way reversing valve 85 100 up, make the 8th
Port 104 is linked up with the 6th port 102, and fifth port 101 is linked up with the 7th port 103, so as to by the height in second channel 56
Pressure power liquid leads into the 4th chamber 89 through the 8th port 104 and the 6th port 102, and then it is descending to derive second piston 75.
Descending second piston 75 drives that first piston 73 is descending by piston rod 77, and the liquid in second chamber 81 is extruded, through the
Four pipeline 69 enters in the first annular space 45, the increase of the space of first chamber 81, and the formation fluid in stratum is through first passage 64 and first
Pipeline 63 enters in first chamber 79, and weary power fluid in the 3rd chamber 87 enters the through fifth port 101 and the 7th port 103
In one annular space 45, after mixing with the liquid discharged from second chamber 81 together with export.The process is down stroke.
Additionally, second liang of valve element of position and four-way reversing valve 85 100 is in moving process, can be by through the 3rd port 93 or the 4th
The weary power fluid that port 95 is led into upper power cavity 106 or lower power cavity 107 in second liang of position and four-way reversing valve 85 is squeezed
Extrusion is gone, and the weary power fluid in this part can be along the 3rd port 93 or the 4th port 95 connected with second liang of position and four-way reversing valve 85
Into first liang of position and four-way reversing valve 83, then enter first through the first port 97 with the 3rd port 93 or the communication of the 4th port 95
In annular space 45.
Generally, for ease of distinguishing, the liquid in first chamber 79 and second chamber 81 will be entered into from stratum
Referred to as formation fluid, the formation fluid entered into first chamber 79 and second chamber 81, will be from first because of the defeated power of pump
The liquid referred to as production fluid of outside output channel is extruded into chamber 79 and second chamber 81.
Therefore, through the formation fluid of the second pipeline 65 and the extrusion of the 4th pipeline 69, through first port 97, the row of the 7th port 103
The weary power fluid for going out is mixed into the first annular space 45, then is delivered to ground through the first annular space 45.
Above-mentioned weary power fluid refers to have been introduced into first liang of position and four-way reversing valve 83 and second liang of position and four-way reversing valve
85 and the 3rd high voltage power liquid in chamber 87 and the 4th chamber 89, because high voltage power liquid need to externally do work, therefore its pressure
Reduce, the high voltage power liquid for completing acting is referred to as weary power fluid.
The present invention to changement conveying high-pressure power fluid and output formation fluid another embodiment be：
Please also refer to Fig. 7, Figure 10 and Figure 11.
In the tube wall of the first tubing string 47 third channel 62, the first port the 97, the 7th are additionally provided with along its axial direction
Port 103, the second pipeline 65 and the 4th pipeline 69 are connected with the third channel 62.
Be arranged with second tubing string 60 in the first tubing string 47, the oil pumping pump core body 61 can sealing shroud mounted in described the
In two tubing strings 60, shape between the first tubing string 47 and the second tubing string 60 between the oil pumping pump core body 61 and the well head
Into the second annular space 40, second annular space 40 is connected with the third channel 62.
The course of work of the implementation method is：
When first piston 73 promotes connecting rod 91 to bottom dead centre, second port 99 is linked up with the 3rd port 93, the 4th port
95 link up with first port 97, and the high voltage power liquid in second channel 56 is directed into through the port 93 of second port 99 and the 3rd
Second liang of upper power cavity 106 of position and four-way reversing valve 85, promotes second liang of valve element of position and four-way reversing valve 85 100 descending, makes the
Eight ports 104 are linked up with fifth port 101, and the 6th port 102 is linked up with the 7th port 103, so as to by second channel 56
High voltage power liquid leads into the 3rd chamber 87 through the 8th port 104 and fifth port 101, and then promotes a piston 73 up.
Up first piston 73 drives that second piston 75 is up by piston rod 77, and the liquid in first chamber 79 is extruded, through the
Two pipeline 65 enters in third channel 62, the increase of the space of second chamber 81, and the formation fluid in stratum is through the chamber of the 3rd pipeline 67 second
In room 81, weary power fluid in the 4th chamber 89 enters in third channel 62 through the 6th port 102 and the 7th port 103, with from
Exported together after the liquid mixing of the discharge of first chamber 79.The process is upstroke.
During upstroke, can be contacted with the connecting rod 91 after the motion certain distance of second piston 75, so as to drive institute
State connecting rod 91 up together, when the second piston 75 promotes the connecting rod 91 to top dead-centre, the second port 99 and institute
State the 4th port 95 to link up, the high voltage power liquid in second channel 56 is directed into through second port 99 and the 4th port 95
Two liang of lower power cavities 107 of position and four-way reversing valve 85, promote second liang of valve element of position and four-way reversing valve 85 100 up, make the 8th
Port 104 is linked up with the 6th port 102, and fifth port 101 is linked up with the 7th port 103, so as to by the height in second channel 56
Pressure power liquid leads into the 4th chamber 89 through the 8th port 104 and the 6th port 102, and then it is descending to derive second piston 75.
Descending second piston 75 drives that first piston 73 is descending by piston rod 77, and the liquid in second chamber 81 is extruded, through the
Four pipeline 69 enters in third channel 62, the increase of the space of first chamber 81, and the formation fluid in stratum is through first passage 64 and first
Pipeline 63 enters in first chamber 79, and weary power fluid in the 3rd chamber 87 enters the through fifth port 101 and the 7th port 103
In triple channel 62, after mixing with the liquid discharged from second chamber 81 together with export.The process is down stroke.
Additionally, second liang of valve element of position and four-way reversing valve 85 100 is in moving process, can be by through the 3rd port 93 or the 4th
The weary power fluid that port 95 is led into upper power cavity 106 or lower power cavity 107 in second liang of position and four-way reversing valve 85 is squeezed
Extrusion is gone, and the weary power fluid in this part can be along the 3rd port 93 or the 4th port 95 connected with second liang of position and four-way reversing valve 85
Into first liang of position and four-way reversing valve 83, then enter the 3rd through the first port 97 with the 3rd port 93 or the communication of the 4th port 95
In passage 62.
Therefore, through the second pipeline 65 and the extrusion of the 4th pipeline 69 formation fluid, through first port 97, the 7th port 103 discharge
Weary power fluid be mixed into third channel 62, then be delivered to ground through the second annular space 40 for being connected with third channel 62.
With the mixed liquor transfer passage of weary power fluid be arranged in the tube wall of first tubing string 47 formation fluid by the implementation method,
And ground is delivered to by the second annular space 40, and stratum is separated with the first annular space 45 without the use of packer, can be by release
The first annular space 45 afterwards carries out the related oil well test such as dynamic liquid level test.
It is pointed out that above two implementation method, described first passage 64, second channel 56 and third channel 62
It is closing on the end face near the first tubing string 47 on stratum, prevents formation fluid in three passages, high voltage power liquid and product
Go out in liquid inflow stratum.
Certainly, the present invention is not limited thereto to the implementation method of changement conveying high-pressure power fluid.For example, first
The high voltage power liquid import-second port 99 of two position and four-way reversing valves 83, and second liang of high voltage power of position and four-way reversing valve 85
Liquid import-the eight is respectively turned on pipeline on port 104, and the pipeline is connected with the first tubing string 47, in first tubing string 47
High voltage power liquid energy enters into the port 104 of second port 99 and the 8th by the pipeline；Or the pipeline directly with ground on
The equipment connection of high voltage power liquid is exported, it is dynamic to conveying high-pressure in the pipeline by the equipment that high voltage power liquid is exported on ground
Power liquid.
Refer to Fig. 3 or Figure 10.The well liquid of embodiment of the present invention drives oil pumping system also includes above ground portion, describedly
Face point includes：Production fluid export pipeline 42, the production fluid export pipeline 42 connects with the annular space 40 of first annular space 45/ second
It is logical, the formation fluid production fluid of the annular space 40 of the first annular space 45/ second and the mixed liquor of weary power fluid are entered into through production fluid efferent duct
Line 42 is delivered to ground；Three-phase separating device 44, fluid reservoir 46, booster pump 48, the high voltage power liquid feed-line being sequentially connected
50, the three-phase separating device 44 is connected with the production fluid export pipeline 42, the part in the production fluid export pipeline 42
After the separating treatment of the three-phase separating device 44, the liquid for obtaining enters the fluid reservoir 46 to production fluid, and remaining liquid passes through
Pipelined to measuring station, after the liquid in the fluid reservoir 46 is pressurized through the booster pump 48, through high voltage power liquid delivery pipe
Line 50 is delivered in the second tubing string 60 of the first tubing string 47/.
Check valve 52 is provided with the high voltage power liquid feed-line 50, the check valve 52 can prevent from coming into institute
State the high voltage power liquid backflow in the second tubing string 60 of first tubing string 47/.
Preferred scheme also includes safety valve 54, and the safety valve 54 is arranged on the high pressure of fluid reservoir 46 and the upstream of ball-and-seat 52
On the pipeline that power fluid feed-line 50 is connected.Setting the effect of safety valve 54 is：Once underground equipment breaks down cause
Liquid cannot be lifted to ground, then will cause to build the pressure to conveying high-pressure power fluid in the second tubing string 60 of first tubing string 47/, made
Pressure increase in high voltage power liquid feed-line 50, pressure increases to certain value and is then likely to cause pipelines from bursting, in order to anti-
The only generation of such case, safety valve 54 can make it when the pressure in high voltage power liquid feed-line 50 increases to certain value
In high voltage power liquid be back in fluid reservoir 46 along the place branch road of safety valve 50, reach the purpose of pressure release.
The beneficial effect that the well liquid of embodiment of the present invention drives oil pumping system is：Set by first liang of position and four-way reversing valve
83 and second liang of changement of position and four-way reversing valve 85, first piston 73 and second piston 75 in moving process, by pushing away
Dynamic connecting rod 91 drives first liang of valve element of position and four-way reversing valve 83, makes first liang of second port of position and four-way reversing valve 83, i.e., high
The import of pressure power liquid can replace communication with the 3rd port and the 4th port, so as to guide high voltage power liquid to enter the second two four
Logical reversal valve 85, to promote second liang of valve element of position and four-way reversing valve 85 to move, makes second liang the 8th of position and four-way reversing valve 85 the
Port, the i.e. import of high voltage power liquid can replace communication with fifth port and the 6th port, so as to guide high voltage power liquid to replace
Into the 3rd chamber 87 and the 4th chamber 89, and then first piston 73 and second piston 75 is alternately promoted to move, by first chamber
79 and second chamber 81 in formation fluid extrusion, so either upstroke or down stroke can produce liquid, be born piston is solved
While carrying equalization problem, also solve prior art and rely only on the problem that one-stroke, i.e. upstroke could pump, imitate production
Rate is greatly improved.
Several embodiments of the present invention are the foregoing is only, those skilled in the art is according to application documents disclosure
Various changes or modification can be carried out to the embodiment of the present invention without departing from the spirit and scope of the present invention.
Claims (7)
1. well liquid drives oil pumping system, it is characterised in that including：
With hollow chamber and the oil pumping pump core body in precalculated position in the sleeve pipe of oil-producing well can be lowered into, in the hollow chamber
Energy first piston movable within and second piston are provided with, by piston rod between the first piston and the second piston
Connection, the first piston is close to the well head of the oil-producing well, and the second piston away from the well head, the first piston
End face near the well head forms closed first chamber with the oil pumping pump core body, and the second piston is away from the well
The end face of mouth forms closed second chamber with the oil pumping pump core body；
The first chamber is communicated with the first pipeline and the second pipeline, and the second chamber is communicated with the 3rd pipeline and the 4th pipe
Road, in the oil pumping pump core body is lowered into oil-producing well, the stratum liquid energy in stratum is through first pipeline and the described 3rd
Pipeline is separately flowed into the first chamber and the second chamber, is entered into the first chamber and the second chamber
Stratum liquid energy flows out through second pipeline and the 4th pipeline respectively；
Check valve is provided with first pipeline, the second pipeline, the 3rd pipeline and the 4th pipeline, wherein first pipeline
The formation fluid that can prevent from coming into the first chamber and the second chamber with the check valve on the 3rd pipeline flows back；Institute
Stating the check valve on the second pipeline and the 4th pipeline can prevent from having flowed out the first chamber and the second chamber
Formation fluid flows back；
It is arranged in the hollow chamber and the reversing machine with first liang of position and four-way reversing valve and second liang of position and four-way reversing valve
Structure, the changement is arranged between the first piston and the second piston, and the first piston is away from the well head
End face and the changement and oil pumping pump core body form the 3rd closed chamber, the second piston is near the well head
End face form the 4th closed chamber with the changement and oil pumping pump core body；
First liang of position and four-way reversing valve includes first port, second port, the 3rd port and the 4th port, second end
Mouth can replace communication with the 3rd port and the 4th port, and when the second port and the 3rd port and described
During one of communication in the 4th port, another in the 3rd port and the 4th port can be with the first end
Oral groove leads to；
The valve element of first liang of position and four-way reversing valve is connected with connecting rod, and the connecting rod two ends extend respectively to the 3rd chamber
In the 4th chamber, make the first piston and second piston that the connecting rod can be promoted in moving process, drive described first
The valve element movement of two position and four-way reversing valves；
Second liang of position and four-way reversing valve includes fifth port, the 6th port, the 7th port and the 8th port, the 8th end
Mouth can replace communication with the fifth port and the 6th port, and when the 8th port and the fifth port and described
During one of communication in the 6th port, another in the fifth port and the 6th port can be with the 7th end
Oral groove leads to；
3rd port and the 4th port are connected with second liang of position and four-way reversing valve, through the 3rd port and the 4th end
Mouth can be to high voltage power liquid be flowed into, to promote the valve of second liang of position and four-way reversing valve in second liang of position and four-way reversing valve
Core movement, the fifth port and the 3rd chamber, the 6th port and the 4th chamber；
First tubing string, the oil pumping pump core body energy sealing shroud is mounted in the first tubing string, in the tube wall of the first tubing string
Along its it is axially arranged have first passage and a second channel, first passage links up first pipeline and stratum, so that in stratum
Stratum liquid energy is flowed into the first chamber through the first passage and first pipeline successively, and the formation fluid in stratum passes through
3rd pipeline enters in the second chamber, and the second channel is connected with the second port and the 8th port,
The first tubing string radially offers the radial passage for connecting the second channel, the high voltage power liquid in the first tubing string
Can be entered into the second channel through the radial passage.
2. well liquid as claimed in claim 1 drives oil pumping system, it is characterised in that：The oil pumping pump core body can be by described
First tubing string is lowered into the sleeve pipe of oil-producing well, and the first annular space is formed between the first tubing string energy and described sleeve pipe, described to take out
Packer is connected with first tubing string below oil pump core body, the packer separates first annular space with stratum,
The first port, the 7th port, the second pipeline and the 4th pipeline are connected with first annular space.
3. well liquid as claimed in claim 2 drives oil pumping system, it is characterised in that：Along its axle in the tube wall of the first tubing string
To third channel is provided with, the first port, the 7th port, the second pipeline and the 4th pipeline are connected with the third channel.
4. well liquid as claimed in claim 3 drives oil pumping system, it is characterised in that：The second pipe is arranged with the first tubing string
Post, the oil pumping pump core body energy sealing shroud is described to pump between pump core body and the well head in the second tubing string
First tubing string and the second tubing string between form the second annular space, second annular space is connected with the third channel.
5. well liquid as claimed in claim 4 drives oil pumping system, it is characterised in that：Including above ground portion, the above ground portion
Including：
Production fluid export pipeline, the production fluid export pipeline is connected with the first annular space/the second annular space；
Three-phase separating device, fluid reservoir, booster pump, the high voltage power liquid feed-line, the three-phase separating device being sequentially connected
It is connected with the production fluid export pipeline, the part production fluid in the production fluid export pipeline is through the three-phase separating device point
After treatment, the liquid for obtaining enters the fluid reservoir, after the liquid in the fluid reservoir is pressurized through the booster pump, through high pressure
Power fluid feed-line is delivered in the first tubing string/second tubing string.
6. well liquid as claimed in claim 5 drives oil pumping system, it is characterised in that：Set on the high voltage power liquid feed-line
Ball-and-seat is equipped with, the ball-and-seat can prevent from coming into the high voltage power liquid backflow in the first tubing string/second tubing string.
7. well liquid as claimed in claim 6 drives oil pumping system, it is characterised in that：Including safety valve, the safety valve is set
On the pipeline that the high voltage power liquid feed-line of the fluid reservoir with the ball-and-seat upstream is connected.
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| CN201410795243.9A CN104533350B (en) | 2014-12-18 | 2014-12-18 | Well liquid drives oil pumping system |
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|---|---|---|---|
| CN201410795243.9A CN104533350B (en) | 2014-12-18 | 2014-12-18 | Well liquid drives oil pumping system |
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| CN104533350B true CN104533350B (en) | 2017-06-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625995B (en) * | 2016-01-29 | 2018-07-03 | 徐晓波 | Without bar mining system |
| CN108505984B (en) * | 2018-05-29 | 2024-03-08 | 南京聚源隆能源科技有限公司 | Oil well liquid drives pressure boost system |
| CN109026863B (en) * | 2018-08-23 | 2020-11-17 | 吕律廷 | Full hydraulic control oil pumping unit for oil field |
| CN114483551A (en) * | 2020-11-12 | 2022-05-13 | 中国石油天然气股份有限公司 | Plunger pump system |
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