CN109386273A - Gas and sand anchor for oil well pump - Google Patents
Gas and sand anchor for oil well pump Download PDFInfo
- Publication number
- CN109386273A CN109386273A CN201710669059.3A CN201710669059A CN109386273A CN 109386273 A CN109386273 A CN 109386273A CN 201710669059 A CN201710669059 A CN 201710669059A CN 109386273 A CN109386273 A CN 109386273A
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- oil
- gas
- inner tube
- buffer
- outer tube
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- 239000004576 sand Substances 0.000 title claims abstract description 64
- 239000003129 oil well Substances 0.000 title claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 174
- 238000000926 separation method Methods 0.000 claims abstract description 92
- 239000010779 crude oil Substances 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000011148 porous material Substances 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims description 32
- 239000003921 oil Substances 0.000 claims description 21
- 230000003139 buffering effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
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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)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention discloses a kind of gas and sand anchors for oil well pump, belong to oilfield exploitation technical field.The gas and sand anchor includes: top connection, outer tube, inner tube, at least two-stage Oil-gas Separation blade, at least one layer of buffer and lower contact；Inner tube is located at outer tube, and there are gaps between outer tube and inner tube, and one end of outer tube and inner tube is connect with the lower end surface of top connection respectively；The one end connecting on outer tube with top connection is equipped with aperture, and the other end of outer tube is connect with lower contact, and at least one layer of buffer is located between the other end and lower contact of inner tube, is provided with sieve pore at least one layer of buffer；At least two-stage Oil-gas Separation blade is fixed on the outer surface of inner tube, and at least two-stage Oil-gas Separation blade lower section that is located at the aperture.When the oil well pump that the upper end of top connection connects is in upstroke, the separation of liquids and gases in crude oil is realized, and the sand in crude oil is isolated by least one layer of buffer；In the down stroke of oil well pump, the gas isolated is discharged from the aperture.
Description
Technical field
The present invention relates to oilfield exploitation technical field, in particular to a kind of gas and sand anchor for oil well pump.
Background technique
In the recovery process in oil field, mainly using mechanical technology by the crude oil pumping in oil well to ground, with realization pair
The exploitation of oil well.Wherein 80% or more oil well exploits oil well using the technique of oil well pump, and in the exploitation of oil well
Cheng Zhong, the crude oil in oil well inevitably include dissolved gas or free gas, and the phenomenon that carry sand.By oil well
In crude oil pumping to ground during, gas and sand in crude oil can enter oil well pump with crude oil, due to gas
Compressible and expandable characteristic, easily cause the gas lock of oil well pump, and gas occupies certain space in the pump housing of oil well pump, from
And the pump efficiency of oil well pump is reduced, substantially reduce oily well yield.In addition, the sand carried in crude oil can be in the mistake that crude oil is elevated
Cheng Zhong causes to wear to oil well pump, sucker rod and oil pick-up tube, in turn results in crude oil leakage, to make oil well output reduce, and former
The sand carried in oil may cause the phenomenon that sand card to oil well pump, and so as to shorten the pump detection period of oil well pump, increase is produced into
This.Therefore, a kind of gas and sand anchor for oil well pump is needed, for removing free gas and dissolved gas in crude oil, Yi Jiyuan
The sand carried in oil.
Summary of the invention
The phenomenon that in order to solve the dissolved gas for including in crude oil, free gas, and carry sand, the embodiment of the present invention mentions
A kind of gas and sand anchor for oil well pump is supplied.The technical solution is as follows:
The embodiment of the invention provides a kind of gas and sand anchor for oil well pump, the gas and sand anchor include: top connection, outer tube,
Inner tube, at least two-stage Oil-gas Separation blade, at least one layer of buffer and lower contact；
Said inner tube is located at the outer tube, there are gap between the outer tube and said inner tube, and the outer tube with
One end of said inner tube is connect with the lower end surface of the top connection respectively, with the lower end surface of the top connection to the outer tube with
Gap between said inner tube is sealed, and realizes the connection between said inner tube and the top connection；
The one end connecting on the outer tube with the top connection is equipped with aperture, the other end of the outer tube and the lower contact
Connection, vacantly in the inside of the outer tube, at least one layer buffer is arranged in the outer tube other end of said inner tube
Portion, and be located between the other end and the lower contact of said inner tube, sieve pore is provided on at least one layer buffer；
At least two-stage Oil-gas Separation blade is fixed on the outer surface of said inner tube, and at least two-stage oil gas point
From the lower section that blade is located at the aperture；
When the upper surface of the top connection is connected with oil well pump, in the upstroke of the oil well pump, crude oil passes through institute
Aperture is stated to enter in the gap between the outer tube and said inner tube, under the action of at least two-stage Oil-gas Separation blade,
Realize the separation of the liquids and gases in the crude oil, and crude oil flow velocity reduced by least one layer of buffer, and from point
It separates out to separate in a manner of retention in the crude oil of gas and shake out；In the down stroke of the oil well pump, the gas isolated is from institute
It states aperture and the gas and sand anchor is discharged.
It optionally, include at least one Oil-gas Separation blade, the Oil-gas Separation blade packet in every grade of Oil-gas Separation blade
Include annulus and multiple stirrer gears；
The multiple stirrer gear is arranged on the excircle of the annulus, wherein each of the multiple stirrer gear stirs
The angle between the plane where plane and the annulus where teeth is less than predetermined angle, and the internal diameter of the annulus is greater than
The outer diameter of said inner tube.
Optionally, the gas and sand anchor further includes at least three hollow cylindric partitions, and the internal diameter of the partition is greater than institute
State the outer diameter of inner tube；
At least three partition is fixed on the outer surface of the inner tube, and is provided with level-one between two neighboring partition
Oil-gas Separation blade, to pass through at least two-stage Oil-gas Separation blade, and at least two-stage oil gas by described in described in partition isolation
Separate blade is fixed on the outer surface of said inner tube in a manner of squeezing.
Optionally, the outer diameter of the partition is less than the diameter of a circle that the tooth root of the stirrer gear is formed, neighbouring
Two-stage Oil-gas Separation blade between form chamber.
Optionally, the length of the partition is greater than the thickness of every grade of Oil-gas Separation blade.
Optionally, for every layer of buffer at least one layer of buffer, connect on the buffer with the outer tube
The position connect is provided with fixed jaw.
Optionally, the buffer is taper buffer, and the vertex of the taper buffer is towards the top connection.
Technical solution provided in an embodiment of the present invention has the benefit that in the embodiment of the present invention, by outer tube and interior
One end of pipe is connect with the lower end of top connection respectively, is arranged aperture in one end for connecting with top connection of outer tube, and by outer tube
The other end is connect with lower contact, and at least one layer of buffer, and at least one layer are arranged between the other end and lower contact of inner tube
Sieve pore is provided on buffer, in the fixed at least two-stage Oil-gas Separation blade in the outer surface of inner tube.When the upper end of top connection connects
Oil well pump when being in upstroke, crude oil enters the gap between outer tube and inner tube by the aperture, and flow through this at least two
Grade Oil-gas Separation blade generates vortex effect to crude oil by the chamber between adjacent two-stage Oil-gas Separation blade, realizes and improve
The separation of liquids and gases in crude oil, the crude oil after separation flow through at least one layer buffer, realize to the buffering of crude oil and
Reduction of speed effect, and realize that the retention to the sand carried in crude oil separates based on the sieve pore on at least one layer buffer, point
Crude oil from after enters oil well pump along the connection between inner tube and top connection, and the sand isolated then enters in tail pipe；When upper
When the oil well pump of the upper end connection of connector is in down stroke, the crude oil in gas and sand anchor is in relative static conditions, due to gas
Density is less than the density of crude oil, and gas is discharged out of this gas and sand anchor along aperture.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram for oil well pump gas and sand anchor provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of crude oil flow in a kind of gas and sand anchor provided in an embodiment of the present invention；
Fig. 3 A is a kind of structural schematic diagram of Oil-gas Separation blade provided in an embodiment of the present invention；
Fig. 3 B is the structural schematic diagram of another Oil-gas Separation blade provided in an embodiment of the present invention；
Fig. 3 C is the structural schematic diagram of another Oil-gas Separation blade provided in an embodiment of the present invention；
Fig. 4 A is a kind of structural schematic diagram of partition provided in an embodiment of the present invention；
Fig. 4 B is the structural schematic diagram of another partition provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of buffer provided in an embodiment of the present invention.
Appended drawing reference: 1: top connection；2: outer tube；21: aperture；3: inner tube；4: level-one oil gas separate blade；41: one oil
Gas separate blade；411: annulus；412: stirrer gear；5: buffer；51: sieve pore；52: fixed jaw；6: lower contact；7: partition.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structural schematic diagram of gas and sand anchor for oil well pump provided in an embodiment of the present invention.It, should referring to Fig. 1
Gas and sand anchor includes: top connection 1, outer tube 2, inner tube 3, at least two-stage Oil-gas Separation blade 4, at least one layer of buffer 5 and lower contact
6；
Inner tube 3 is located inside outer tube 2, and there are gaps between outer tube 2 and inner tube 3, and one end of outer tube 2 and inner tube 3 is distinguished
It is connect with the lower end surface of top connection 1, to be sealed in the lower end surface of top connection 1 to the gap between outer tube 2 and inner tube 3, with
And the connection between realization inner tube 3 and top connection 1；
The one end connecting on outer tube 2 with top connection 1 is equipped with aperture 21, and the other end of outer tube 2 is connect with lower contact 6, inner tube 3
The other end vacantly in the inside of outer tube 2, at least one layer of buffer 5 is arranged inside outer tube 2, and is located at the other end of inner tube 3
Between lower contact 6, sieve pore 51 is provided on at least one layer buffer 5；
At least two-stage Oil-gas Separation blade 4 is fixed on the outer surface of inner tube 3 for this, and at least two-stage Oil-gas Separation blade
4 are located at the lower section of aperture 21；
When the upper surface of top connection 1 is connected with oil well pump, in the upstroke of oil well pump, crude oil is entered by aperture 21
In gap between outer tube 2 and inner tube 3, under the action of at least two-stage Oil-gas Separation blade 4, separate crude oil in liquid and
Gas, and separated and shaked out from the liquid isolated by at least one layer buffer 5；In the down stroke of oil well pump, separation
Gas out is discharged from aperture 21.
When the oil well pump that the upper end of top connection 1 connects is in upstroke, as shown in Fig. 2, oil well pump drives the gas and sand anchor
Interior crude oil generates flowing, so that the crude oil outside the gas and sand anchor is made to enter the gap between outer tube 2 and inner tube 3 by aperture 21,
Since the lower end surface of top connection 1 seals the gap between outer tube 2 and inner tube 3, crude oil is along outer tube 2 and inner tube 3
Between gap flow downward, and flow through at least two-stage Oil-gas Separation blade 4, this is at least in two-stage Oil-gas Separation blade 4
Every grade of Oil-gas Separation blade 4 reduces the circulation area of crude oil, to make crude oil shape between adjacent two-stage Oil-gas Separation blade 4
At vortex, the separation to liquids and gases in crude oil is realized, the crude oil for isolating gas further flows through at least one layer and delays
Device 5 is rushed, since flow velocity is higher after this at least separation of two-stage Oil-gas Separation blade 4 for crude oil, in order to avoid the sand of crude oil carrying is straight
The connection connect between inner tube 3 and top connection 1 enters oil well pump, can be realized based on at least one layer buffer 5 to crude stream
The buffering of speed, and separates the sand carried in crude oil in a manner of retention sieve pore 51, the crude oil after separation along
Connection between inner tube 3 and top connection 1 enters oil well pump；When the oil well pump that the upper end of top connection 1 connects is in down stroke, gas
Crude oil in sand anchor is in relative static conditions, in the gas and sand anchor, since the density for the gas isolated in crude oil is less than original
The density of oil, to generate floating, and then is discharged out of this gas and sand anchor along the aperture 21 on outer tube 2.
Wherein, the upper surface of top connection 1 is circle, can directly be connect with oil well pump lower end, can also be short by oil pipe
Section is connect with oil well pump, and the lower end surface of top connection 1 can be annulus, and the outer circle of the annulus is connect with one end of outer tube 2, the annulus
Inner circle connect with one end of inner tube 3, the sealing in gap between outer tube 2 and inner tube 3 is realized based on the annulus, based on the annulus
Circular hole realizes the connection between inner tube 3 and top connection 1.Certainly, the lower end surface of top connection 1 may be concentric circles, concentric at this
When circle is connect with one end of outer tube 2 and inner tube 3 respectively, gap between outer tube 2 and inner tube 3 is realized based on annular seal gasket
Sealing.By being sealed to gap between outer tube 2 and inner tube 3, can be isolated to avoid when oil well pump is in down stroke
Gas enters oil well pump by the gap.The embodiment of the present invention is not specifically limited the lower end surface of top connection 1, as long as connecing upper
First 1 with one end of outer tube 2 and inner tube 3 when connecting respectively, can be realized the sealing in gap between outer tube 2 and inner tube 3, and in realizing
Connection between pipe 3 and top connection 1.
Wherein, when crude oil enters the gap between outer tube 2 and inner tube 3 from aperture 21, due to crude oil flow velocity direction with
Outer tube 2 it is axially vertical, the separation of liquids and gases in crude oil is not easy to, when outer surface of the crude oil Jing Guo inner tube 3 is by flow velocity side
To when changing into parallel with the axial direction of inner tube 3, it can more effectively realize and liquids and gases in crude oil are efficiently separated, because
This, the position of the level-one oil gas separate blade 4 of the top at least in two-stage Oil-gas Separation blade 4 is lower than aperture 21.It that is to say,
At least two-stage Oil-gas Separation blade 4 is located at the lower section of aperture 21 for this.
Wherein, under the action of at least two-stage Oil-gas Separation blade 4, in order to improve separative efficiency, at least two-stage is oily for this
It is provided with pre-determined distance between adjacent two-stage Oil-gas Separation blade 4 in gas separate blade 4, so that crude oil flows through adjacent two-stage oil gas
When separate blade 4, chamber can be formed between adjacent two-stage Oil-gas Separation blade, generate strong turbulent flow phenomenon, and then produce
It is raw to be vortexed, promote the separation to liquids and gases in crude oil.Wherein, which can be greater than every grade of Oil-gas Separation blade 4
Thickness.When by this at least two-stage Oil-gas Separation blade 4 separates the liquids and gases in crude oil after, this at least one
Layer buffer 5 can rapidly reduce the flow velocity of crude oil, so as to carry out better by sieve pore 51 to the sand carried in crude oil
It efficiently separates.It, can be in the lower end of lower contact 6 after at least one layer buffer 5 comes out the sand separation carried in crude oil
The sand isolated is settled down in tail pipe by face union tail.
It should be noted that top connection 1 respectively can be between outer tube 2 and inner tube 3 and between outer tube 2 and lower contact 6
It is attached by the way of screw thread, it is of course also possible to use other modes are attached, such as suit connection etc..
When oil well pump is in upstroke, crude oil flow through this at least two-stage Oil-gas Separation blade 4 when, in order to better
The gas for including in crude oil is efficiently separated, includes at least one Oil-gas Separation blade in every grade of Oil-gas Separation blade 4
41, as shown in Figure 3A, Oil-gas Separation blade 41 includes annulus 411 and multiple stirrer gears 412；Multiple stirrer gears 412 are arranged in circle
On the excircle of ring 411, wherein 411 place of plane and annulus at 412 place of each stirrer gear in multiple stirrer gears 412
Angle between plane is less than predetermined angle, and the internal diameter of annulus 411 is greater than the outer diameter of inner tube 3.
Crude oil outside the gas and sand anchor flows through at least two-stage oil after aperture 21 enters the gap between outer tube 2 and inner tube 3
Gas separate blade 4 to reduce the circulation area of crude oil, and is based on the conservation of mass since the area of stirrer gear 412 is smaller
Law will cause the phenomenon that crude oil flow velocity increases, pressure reduces, in turn it is found that when crude oil flows through every grade of Oil-gas Separation blade 4
Crude oil can generate vortex between adjacent two-stage Oil-gas Separation blade 4, and crude oil is promoted mutually to collide, improve to liquid in crude oil and
The separating effect of gas.
Wherein, stirrer gear 412 can be class acute triangle, it is of course also possible to for other shapes, such as arch etc..It should
Predetermined angle can be the angle less than 90 degree, that is to say, between the plane where 412 place plane of stirrer gear and annulus 411
Angle can be 0 degree, 30 degree or 45 degree etc..In addition, in order to improve the separative efficiency of liquids and gases, the edge of stirrer gear 412
It can be close to the inner surface of outer tube 2.The internal diameter of annulus 411 can be slightly larger than the outer diameter of inner tube 3, in order to Oil-gas Separation blade 41
The outer surface of inner tube 3 can be fixed on.
In the outer surface of inner tube 3 when fixed every grade of Oil-gas Separation blade 4, when 412 institute of stirrer gear of Oil-gas Separation blade 41
It can be the two of 30 degree by angle as shown in Figure 3B when angle between the plane where plane and annulus 411 is 30 degree
A Oil-gas Separation blade 41 uses back-to-back, is fixed on the outer surface of inner tube 3 as level-one oil gas separate blade 4, to mention
High separating efficiency.
Certainly, if the angle existed simultaneously between the plane at 411 place of 412 place plane of stirrer gear and annulus is 0 degree
Oil-gas Separation blade 41 and angle be 30 degree Oil-gas Separation blade 41 when, as shown in Figure 3 C, can be by being 30 in angle
The Oil-gas Separation blade 41 that fixed angle is 0 degree between two used back-to-back the Oil-gas Separation blade 41 of degree, as level-one
Oil-gas Separation blade 4 is fixed on the outer surface of inner tube 3.
It should be noted that when crude oil is through in this at least 4 separation process of two stage oil-gas separator, crude oil flow velocity is higher, right
The impact force of every grade of Oil-gas Separation blade 4 is larger, in order to avoid the impact force is destroyed to caused by every grade of Oil-gas Separation blade 4,
Stirrer gear 412 can have certain radian, that is to say, the face where stirrer gear 412 is curved surface.
It, can be by sealing rubber ring or screw in every grade of Oil-gas Separation blade due to 41 flakes of Oil-gas Separation blade
4 two sides are fixed.Certainly, in order to simplify the manufacturing process of gas and sand anchor, convenient for the fixation of every grade of Oil-gas Separation blade 4, such as
Shown in Fig. 4 A, gas and sand anchor can also include at least three hollow cylindric partitions 7, and the internal diameter for separating 7 is greater than the outer of inner tube 3
Diameter；At least three partition 7 is fixed on the outer surface of inner tube 3, and is provided with level-one Oil-gas Separation between two neighboring partition 7
Blade 4, with by 7 isolation at least two-stage Oil-gas Separation blade 4 of partition, and will be at least two-stage Oil-gas Separation blade 4 is fixed on
The outer surface of pipe 3.
Wherein, separate 7 internal diameter be greater than inner tube 3 outer diameter, can be fixed on the outer surface of inner tube 3 in order to separate 7,
In fixed partition 7, level-one oil gas separate blade 4 can be set between two neighboring partition, and then can guarantee this at least
Two-stage Oil-gas Separation blade 4 is capable of fixing in the outer surface of inner tube 3.It, can be right when realizing the fixation to Oil-gas Separation blade 4
Each partition at least three partitions 7 is fixed, certainly, can also be only to both ends on 3 outer surface of inner tube in practical application
Partition 7 be fixed, the embodiment of the present invention is not construed as limiting this.
Wherein, the mode for the outer surface that partition is fixed on inner tube 3 can be and is fixed by screw, it certainly, can also
To be fixed by other means.
It should be noted that partition 7 as shown in Figure 4 B, is also possible to a kind of cross section in addition to can be hollow cylinder
For arch, and the partition extended along preset direction, in order to the assembling of the gas and sand anchor.When assembling the gas and sand anchor, can will encircle
The partition 7 of shape is directly buckled in the outer surface of inner tube 3, and is fixed.
After at least two-stage Oil-gas Separation blade 4 is isolated by partition 7, when crude oil flows through at least two-stage oil gas point
When from blade 4, in order to improve separative efficiency, the outer diameter that partition 7 can be set is straight less than the circle that the tooth root of stirrer gear 412 is formed
Diameter when flowing through the chamber in order to crude oil, is formed negative with forming chamber between neighbouring two-stage Oil-gas Separation blade 4
Pressure ring border generates vortex.For the ease of being separated in the chamber to the liquids and gases in crude oil, the height of the chamber
Can be greater than every grade of Oil-gas Separation blade thickness, that is to say, separate 3 length be much larger than every grade of Oil-gas Separation blade 4 thickness
Degree.
By the dissolved gas for including in crude oil or free gas after this at least separation of two-stage Oil-gas Separation blade 4, crude oil
Flow velocity is larger, in order to avoid the sand that crude oil carries directly enters oil well pump from inner tube 3 and the connectivity part of top connection 1, the gas and sand anchor
May include at least one layer of buffer 5, for every layer of buffer 5 in at least one layer buffer 5, on buffer 5 with outer tube
The position of connection is provided with fixed jaw 52, and then buffer 5 is avoided to move in the inside of outer tube 2.
Wherein, pass through the frictional force of fixed jaw 52 and 2 inner surface of outer tube, it is ensured that buffer 5 is fixed on the interior of outer tube 2
Portion is greater than rubbing between fixed jaw 52 and the inner surface of outer tube 2 to the impact force of buffer 5 in order to avoid crude oil flow velocity is higher
Can by welding buffer 5 be fixed on the inside of outer tube 2 to cause the movement of buffer 5 by wiping power, certainly,
Flexible clamp piece can also be set in the inner surface of outer tube 2, buffer 5 is caught in the flexible clamp piece by way of extruding.
When at least one layer buffer 5 is multilayer buffer 5, it is provided with certain distance between adjacent two layers buffer 5,
And in order to preferably slow down the flow velocity of crude oil, and the sand carried in crude oil is effectively separated, adjacent two layers buffering
The sieve pore 51 being arranged on device 5 can be with mutual dislocation.
Wherein, buffer 5, which can be, is equipped with sieve pore 51 by as shown in Figure 5, and surrounds system with the sector for grabbing 52 is fixed
At taper buffer, and the vertex of taper buffer is towards top connection.Certainly, the vertex of taper buffer can also be under
Connector, the embodiment of the present invention are not construed as limiting this.
It should be noted that buffer 5 or other shapes, such as tower etc., the embodiment of the present invention does not make this
It limits.
In embodiments of the present invention, when the oil well pump of top connection connection is in upstroke, oil well pump drives the gas and sand anchor
Outer crude oil enters the gap between outer tube and inner tube from aperture, and crude oil flows through at least two-stage Oil-gas Separation blade, is based on every grade
The stirrer gear that Oil-gas Separation blade includes causes the flow velocity of crude oil to increase, the lesser phenomenon of pressure, due to adjacent two-stage oil gas point
The outer diameter be isolated from passing through between blade, and separated is less than the diameter of a circle that the tooth root of stirrer gear is formed, thus shape
At chamber, therefore, high flow rate crude oil forms vortex in the chamber, causes the mutual collision of crude oil, improve in crude oil liquid and
The separative efficiency of gas has separated gap of the crude oil of gas between outer tube and inner tube and has flowed through at least one layer of buffer, Gao Liu
Fast crude oil reduces crude oil flow velocity under the buffering of at least one layer of buffer, and by the sieve pore on each layer of buffer to crude oil
The sand of middle carrying is separated, and has been separated connection of the crude oil of gas and sand between inner tube and top connection and has been entered oil well pump, from
And realize the separation to former oil dissolved gas and sand.The gas in gap between outer tube and inner tube, in the oil pumping of top connection connection
When pump is in down stroke, since the crude oil in the gas and sand anchor is in relative static conditions, and the density of crude oil is greater than the close of gas
Degree, which, which floats, is discharged the gas and sand anchor along aperture, and the sand that at least one layer of buffer is isolated stores the tail connected to lower contact
Guan Zhong, and then fishing sand operation periodically is carried out to the sand stored in tail pipe.In addition, the connection type between each component of the gas and sand anchor is not
There are pads, and processing technology is simple, easy to accomplish.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of gas and sand anchor for oil well pump, which is characterized in that the gas and sand anchor includes: top connection, outer tube, inner tube, at least
Two-stage Oil-gas Separation blade, at least one layer of buffer and lower contact；
Said inner tube is located at the outer tube, there are gap between the outer tube and said inner tube, and the outer tube with it is described
One end of inner tube is connect with the lower end surface of the top connection respectively, with the lower end surface of the top connection to the outer tube with it is described
Gap between inner tube is sealed, and realizes the connection between said inner tube and the top connection；
The one end connecting on the outer tube with the top connection is equipped with aperture, and the other end of the outer tube and the lower contact connect
It connecing, vacantly in the inside of the outer tube, at least one layer buffer is arranged in the outer tube other end of said inner tube,
And be located between the other end and the lower contact of said inner tube, sieve pore is provided on at least one layer buffer；
At least two-stage Oil-gas Separation blade is fixed on the outer surface of said inner tube, and at least two-stage Oil-gas Separation leaf
Piece is located at the lower section of the aperture；
When the upper surface of the top connection is connected with oil well pump, in the upstroke of the oil well pump, crude oil is opened by described
Hole enters in the gap between the outer tube and said inner tube, under the action of at least two-stage Oil-gas Separation blade, separation
Liquids and gases in the crude oil, and separated and shaked out from the liquid isolated by least one layer of buffer；Institute
When stating the down stroke of oil well pump, the gas isolated is discharged from the aperture.
2. gas and sand anchor as described in claim 1, which is characterized in that include at least one oil gas point in every grade of Oil-gas Separation blade
From blade, the Oil-gas Separation blade includes annulus and multiple stirrer gears；
The multiple stirrer gear is arranged on the excircle of the annulus, wherein each stirrer gear in the multiple stirrer gear
The angle between plane where the plane at place and the annulus is less than predetermined angle, and the internal diameter of the annulus is greater than described
The outer diameter of inner tube.
3. gas and sand anchor as claimed in claim 1 or 2, which is characterized in that the gas and sand anchor further includes at least three hollow circles
Tubular partition, the internal diameter of the partition are greater than the outer diameter of said inner tube；
At least three partition is fixed on the outer surface of the inner tube, and level-one oil gas is provided between two neighboring partition
Separate blade, to pass through at least two-stage Oil-gas Separation blade, and at least two-stage Oil-gas Separation by described in described in partition isolation
Blade is fixed on the outer surface of said inner tube.
4. gas and sand anchor as claimed in claim 3, which is characterized in that the outer diameter of the partition is less than the tooth root shape of the stirrer gear
At diameter of a circle, to form chamber between neighbouring two-stage Oil-gas Separation blade.
5. gas and sand anchor as claimed in claim 3, which is characterized in that the length of the partition is greater than every grade of Oil-gas Separation blade
Thickness.
6. gas and sand anchor as described in claim 1, which is characterized in that for every layer of buffering at least one layer of buffer
Device, the position being connect on the buffer with the outer tube are provided with fixed jaw.
7. gas and sand anchor as described in claim 1 or 6, which is characterized in that the buffer is taper buffer, and the taper
The vertex of buffer is towards the top connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669059.3A CN109386273A (en) | 2017-08-08 | 2017-08-08 | Gas and sand anchor for oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669059.3A CN109386273A (en) | 2017-08-08 | 2017-08-08 | Gas and sand anchor for oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109386273A true CN109386273A (en) | 2019-02-26 |
Family
ID=65413729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710669059.3A Pending CN109386273A (en) | 2017-08-08 | 2017-08-08 | Gas and sand anchor for oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386273A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157982Y (en) * | 1993-04-22 | 1994-03-02 | 吉林省油田管理局新木采油厂 | Anti gas & sand apparatus for pumping well in oil field |
| CN2693990Y (en) * | 2003-12-24 | 2005-04-20 | 大港油田集团有限责任公司 | Inner offset gas sand anchor |
| CN101384372A (en) * | 2006-02-20 | 2009-03-11 | 国际壳牌研究有限公司 | In-line separator |
| US20140158343A1 (en) * | 2012-12-11 | 2014-06-12 | Delwin E. Cobb | Downhole gas separator and method |
| CN207332860U (en) * | 2017-08-08 | 2018-05-08 | 中国石油天然气股份有限公司 | Gas and sand anchor for oil well pump |
-
2017
- 2017-08-08 CN CN201710669059.3A patent/CN109386273A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157982Y (en) * | 1993-04-22 | 1994-03-02 | 吉林省油田管理局新木采油厂 | Anti gas & sand apparatus for pumping well in oil field |
| CN2693990Y (en) * | 2003-12-24 | 2005-04-20 | 大港油田集团有限责任公司 | Inner offset gas sand anchor |
| CN101384372A (en) * | 2006-02-20 | 2009-03-11 | 国际壳牌研究有限公司 | In-line separator |
| US20140158343A1 (en) * | 2012-12-11 | 2014-06-12 | Delwin E. Cobb | Downhole gas separator and method |
| CN207332860U (en) * | 2017-08-08 | 2018-05-08 | 中国石油天然气股份有限公司 | Gas and sand anchor for oil well pump |
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