CN108678694A - Flushing valve and oil production equipment - Google Patents
Flushing valve and oil production equipment Download PDFInfo
- Publication number
- CN108678694A CN108678694A CN201810498380.4A CN201810498380A CN108678694A CN 108678694 A CN108678694 A CN 108678694A CN 201810498380 A CN201810498380 A CN 201810498380A CN 108678694 A CN108678694 A CN 108678694A
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- China
- Prior art keywords
- tube body
- sliding sleeve
- inlet
- admission chamber
- wall
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims description 38
- 238000010276 construction Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 35
- 230000000694 effects Effects 0.000 description 11
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 5
- 229910052755 nonmetal Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
- 238000005406 washing 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of flushing valve and oil production equipments, are related to the technical field of oilfield exploitation, which includes：Tube body, the first sliding sleeve, the second sliding sleeve and standing valve；It is provided with the first groove body on the outer wall of tube body, the first protrusion is provided on the inner wall of the first sliding sleeve, and the first protrusion is located in the first groove body, the first groove body is divided into the first admission chamber and the second admission chamber by the first protrusion；First admission chamber includes the first inlet being connected to tubular body, and the second admission chamber includes the second inlet being connected to tubular body；It is provided with leakage fluid dram on the outer wall of tube body, the second groove body is provided on the outer wall of tube body, the second protrusion is provided on second sliding sleeve, second protrusion is located in the second groove body, second groove body and the second protrusion surround third admission chamber, for third admission chamber for accommodating the liquid flowed out from the second admission chamber, third admission chamber includes third inlet, and third inlet is relative to the second inlet closer to the lower port of tube body.
Description
Technical field
The present invention relates to the technical fields of oilfield exploitation, more particularly, to a kind of flushing valve and oil production equipment.
Background technology
For oil well before putting tubing string operation, wash kill-job prevents well blowout situation of overflowing from occurring.Well-flushing, which is divided into, just to be washed
Well and anti-flushing well.Positive well-flushing is returned out from casing by oil pipe feed liquor, and anti-flushing well is returned out from oil pipe by casing feed liquor.
More for no bar electric submersible pumping well domestic application is electric submersible screw pump, electric submersible screw pump in termination of pumping just
It is reversed to be all unable to feed liquor, electrical plunger pump may only unidirectional feed liquor, realize anti-flushing well, but there are well-flushing pressures in heavy oil wells application
The excessively high problem of power, the outer pressure resistance of non metal continuous oil pipe is relatively low, be easy to cause the conquassation of tubing.Non metal continuous oil pipe
It holds internal pressure strength height therefore needs to develop a kind of Valve for washing, solve the problems, such as non metal continuous oil pipe well-flushing.
Invention content
The purpose of the present invention is to provide a kind of flushing valve and oil pipes, to alleviate existing non metal continuous oil pipe well-flushing
The technical issues of.
In a first aspect, a kind of flushing valve provided in an embodiment of the present invention, including：Tube body, the first sliding sleeve, the second sliding sleeve and solid
Determine valve, the lower port of the tube body with electric pump for connecting, and the upper port of the tube body with oil pipe for connecting, the fixation
The direction of the traffic that valve is used to limit in the tube body is unidirectional, so that the liquid in the tube body can only be under the tube body
The upward port direction in port passes through the standing valve；
First sliding sleeve is slidably socketed in the outside of the tube body, and second sliding sleeve is slidably socketed in the tube body
On；
It is provided with the first groove body on the outer wall of the tube body, the first protrusion is provided on the inner wall of first sliding sleeve, and
First protrusion is located in first groove body, and first groove body is divided into the first admission chamber and second by first protrusion
Admission chamber；First admission chamber includes the first inlet being connected to the tubular body, second admission chamber include with
Second inlet of the tubular body connection；
The sectional area of the second inlet circumferential direction cavity is more than the sectional area of the first inlet circumferential direction cavity；
First inlet and the second inlet are located at the both sides of the standing valve, and first inlet
Close to the upper port of the tube body, lower port of second inlet close to the tube body；
Leakage fluid dram is provided on the outer wall of the tube body, and the leakage fluid dram is located at the sliding path of first sliding sleeve
On, when so that first sliding sleeve sliding into the leakage fluid dram aperture position, the leakage fluid dram is blocked；
The second groove body is provided on the outer wall of the tube body, be provided on second sliding sleeve second protrusion, described second
Protrusion is located in second groove body, and second groove body surrounds third admission chamber, the third feed liquor with second protrusion
For chamber for accommodating the liquid flowed out from second admission chamber, the third admission chamber includes third inlet, the third into
Liquid mouth is relative to second inlet closer to the lower port of the tube body.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
It states and is provided with the first stop configurations on the side wall of tube body, first stop configurations are located at the third inlet and the first sliding sleeve
Between；The flushing valve includes the first spring, and first spring is between first stop configurations and the first sliding sleeve, institute
The first spring is stated for pushing first sliding sleeve to block the leakage fluid dram.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, wherein institute
It states and is provided with the second stop configurations on the side wall of tube body, second stop configurations are located at the lower port of the tube body and second and slide
Between set；The flushing valve includes second spring, and the second spring is between second stop configurations and the second sliding sleeve.
Second of possible embodiment with reference to first aspect, an embodiment of the present invention provides the third of first aspect
Possible embodiment, wherein second stop configurations include annular sleeve wall construction, and the annular sleeve wall construction is centered around institute
The outside of tube body is stated, one end of the second spring is located between the annular jacket wall and tube body.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein edge
The upper port downward port direction of the tube body is provided with the first sealing structure and the second sealing knot on the outer wall of the tube body
Structure, the leakage fluid dram are hidden for increasing by first sliding sleeve between first sealing structure and second seals structure
The leakproofness of the leakage fluid dram of gear.
The 4th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 5th kind of first aspect
Possible embodiment, wherein third sealing structure is provided in first protrusion, the second seals structure and third are close
Seal structure is located at the both sides of first admission chamber, the leakproofness for increasing by first admission chamber.
The 5th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 6th kind of first aspect
Possible embodiment, wherein the 4th sealing structure is provided on the tube wall, the 4th sealing structure and third are close
Seal structure is located at the opposite sides of second admission chamber, the leakproofness for increasing by second admission chamber.
The 6th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 7th kind of first aspect
Possible embodiment, wherein be provided with the 5th sealing structure on the outer wall of the tube body, is provided in second protrusion
Six sealing structures, the 5th sealing structure and the 6th sealing structure are located at the opposite sides of the third admission chamber, for increasing
Add the leakproofness of the third admission chamber.
With reference to first aspect, an embodiment of the present invention provides the 8th kind of possible embodiments of first aspect, wherein institute
The upper port for stating tube body includes conical external screw thread structure, and the lower port of the tube body is provided with conical internal thread structure.
Second aspect, a kind of oil production equipment provided in an embodiment of the present invention, including casing, oil pipe, electric pump and above-mentioned wash
Well valve；
The oil pipe and the electric pump are connect with the flushing valve respectively.
The embodiment of the present invention brings following advantageous effect：
Flushing valve provided in an embodiment of the present invention, including：Tube body, the first sliding sleeve, the second sliding sleeve and standing valve, the pipe
The lower port of body with electric pump for connecting, and the upper port of the tube body with oil pipe for connecting, and the standing valve is for limiting
Direction of the traffic in the tube body is unidirectional, so that the liquid in the tube body can only be from the lower port of the tube body to upper port
Direction passes through the standing valve；First sliding sleeve is slidably socketed in the outside of the tube body, the second sliding sleeve sliding sleeve
It is connected on the tube body；It is provided with the first groove body on the outer wall of the tube body, first is provided on the inner wall of first sliding sleeve
Protrusion, and first protrusion is located in first groove body, first groove body is divided into the first feed liquor by first protrusion
Chamber and the second admission chamber；First admission chamber includes the first inlet being connected to the tubular body, second feed liquor
Chamber includes the second inlet being connected to the tubular body；The sectional area of the second inlet circumferential direction cavity is more than described the
The sectional area of one inlet circumferential direction cavity；First inlet and the second inlet are located at the two of the standing valve
Side, and first inlet is close to the upper port of the tube body, lower port of second inlet close to the tube body；Institute
It states and is provided with leakage fluid dram on the outer wall of tube body, and the leakage fluid dram is located on the sliding path of first sliding sleeve, so that described
When first sliding sleeve slides into the leakage fluid dram aperture position, the leakage fluid dram is blocked；Is provided on the outer wall of the tube body
Two groove bodies are provided with the second protrusion on second sliding sleeve, and second protrusion is located in second groove body, second slot
Body surrounds third admission chamber with second protrusion, and the third admission chamber is for accommodating the liquid flowed out from second admission chamber
Body, the third admission chamber include third inlet, and the third inlet is relative to second inlet closer to described
The lower port of tube body.There are two working conditions for flushing valve tool：First, oil recovery state, the electric pump of pumped (conveying) medium from below is upward
Flowing gives rise to ground, and standing valve is in the open state during being somebody's turn to do, and the circumferential direction in the first inlet and the second inlet is empty
Chamber is each filled with liquid, since the sectional area of the second inlet circumferential direction cavity is more than the sectional area of the first inlet circumferential direction cavity, because
This, the first sliding sleeve is motionless by upward thrust remains stationary, at this point, the location of first sliding sleeve can be close by leakage fluid dram
Envelope, leakage fluid dram are in and are not connected between closed state and casing, and pumped (conveying) medium can be thus lifted to ground by tube body；Second,
Well-flushing state injects flushing fluid from well mouth oil pipe, and downward liquid flow enters in flushing valve.Since standing valve has list
Tropism, should during standing valve be closed, liquid cannot be introduced into the second inlet, the first inlet circumferential direction cavity by
Pressure effect pushes the first sliding sleeve to move downward, and leakage fluid dram, which is opened to be connected to set, realizes positive well-flushing.When the first sliding sleeve moves downward
When, the second feed liquor intracavity liquid is discharged in the closed chamber below standing valve, the corresponding circumferential cavity of third inlet is pressurized
Force effect pushes the second sliding sleeve to move downward, and increases the volume of third admission chamber, the liquid for accommodating the discharge of the second admission chamber
Body prevents the first sliding sleeve to can not be successfully downslide.
Oil production equipment provided in an embodiment of the present invention, including casing, oil pipe, electric pump and above-mentioned flushing valve；The oil pipe
It is connect respectively with the flushing valve with the electric pump.There are two working conditions for flushing valve tool：First, oil recovery state, conveying is situated between
The electric pump of matter from below, which flows up, gives rise to ground, should during standing valve it is in the open state, the first inlet and the
Circumferential cavity in two inlets is each filled with liquid, since the sectional area of the second inlet circumferential direction cavity is more than the first feed liquor choma
To the sectional area of cavity, therefore, the first sliding sleeve is motionless by upward thrust remains stationary, at this point, the position residing for the first sliding sleeve
Leakage fluid dram can be sealed by setting, and leakage fluid dram is in and is not connected between closed state and casing, and pumped (conveying) medium can pass through tube body quilt
It is promoted to ground；Second, well-flushing state injects flushing fluid from well mouth oil pipe, and downward liquid flow enters in flushing valve.By
There is one-way in standing valve, should during standing valve be closed, liquid cannot be introduced into the second inlet, first
Inlet circumferential direction cavity compression force effect pushes the first sliding sleeve to move downward, and leakage fluid dram, which is opened to be connected to set, realizes positive well-flushing.When
When first sliding sleeve moves downward, the second feed liquor intracavity liquid is discharged in the closed chamber below standing valve, third inlet pair
The circumferential cavity compression force effect answered pushes the second sliding sleeve to move downward, and increases the volume of third admission chamber, for accommodating the
The liquid of two admission chambers discharge, prevents the first sliding sleeve to can not be successfully downslide.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram that flushing valve provided in an embodiment of the present invention is in oil recovery state；
Fig. 2 is the partial enlarged view of location A in Fig. 1；
Fig. 3 is the partial enlarged view of B location in Fig. 1；
Fig. 4 is the schematic diagram that flushing valve provided in an embodiment of the present invention is in well-flushing state；
Fig. 5 is the partial enlarged view of location of C in Fig. 4；
Fig. 6 is the partial enlarged view of the positions D in Fig. 4.
Icon：110- upper ports；120- lower ports；The first sliding sleeves of 200-；The first protrusions of 210-；The second sliding sleeves of 300-；
The second protrusions of 310-；400- standing valves；The first admission chambers of 510-；The first inlets of 511-；The second admission chambers of 520-；521-
Two inlets；530- third admission chambers；531- third inlets；600- leakage fluid drams；The first springs of 710-；720- second springs；
800- casings.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that such as occur term "center", "upper", "lower", "left", "right",
The orientation or positional relationship of "vertical", "horizontal", "inner", "outside" etc., instruction is that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, such as there is art
Language " first ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " connected " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connects, and can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two members
Connection inside part.For the ordinary skill in the art, it can understand above-mentioned term in the present invention with concrete condition
Concrete meaning.
As shown in figs 1 to 6, flushing valve provided in an embodiment of the present invention, including：Tube body, the first sliding sleeve, the second sliding sleeve and
Standing valve, for the lower port of the tube body for being connect with electric pump, the upper port of the tube body is described solid for being connect with oil pipe
It is unidirectional to determine direction of the traffic of the valve for limiting in the tube body, so that the liquid in the tube body can only be from the tube body
The upward port direction of lower port passes through the standing valve.
Standing valve is exactly a kind of check valve, he is generally by valve outer housing, and internal valve ball and valve ball seat
Composition, when fluid passes through valve, valve ball leaves valve ball seat, and circulation passage is opened, and fluid can pass through, when fluid is reverse
When flowing, valve ball is sitting on valve ball seat under the action of pressure (or other power), and circulation passage is closed, and fluid cannot pass through
Valve.
First sliding sleeve is slidably socketed in the outside of the tube body, and second sliding sleeve is slidably socketed in the tube body
On；The first groove body is provided on the outer wall of the tube body, the first groove body can be cricoid, be set on the inner wall of first sliding sleeve
It is equipped with the first protrusion, and first protrusion is located in first groove body, first groove body is divided by first protrusion
The pressure that first admission chamber and the second admission chamber, the first cavity and the second cavity body act in the first raised opposing sides is different
When, the first sliding sleeve can be pushed to move up and down.
First admission chamber includes the first inlet being connected to the tubular body, second admission chamber include with
Second inlet of the tubular body connection；The sectional area of the second inlet circumferential direction cavity is more than first inlet
The sectional area of circumferential cavity；First inlet and the second inlet are located at the both sides of the standing valve, and described
First inlet is close to the upper port of the tube body, lower port of second inlet close to the tube body；The tube body
Leakage fluid dram is provided on outer wall, and the leakage fluid dram is located on the sliding path of first sliding sleeve, so that first sliding sleeve
When sliding into the leakage fluid dram aperture position, the leakage fluid dram is blocked.
Because after standing valve sealing, between standing valve and electric pump it is the environment of sealing, and has been filled with oil, and liquid
Body is difficult to be compressed, so after the second admission chamber is compressed, liquid therein will be discharged nowhere, and leakage fluid dram is caused not beat normally
Open so, the second groove body is provided on the outer wall of tube body, the second protrusion, the second raised position are provided on second sliding sleeve
In in second groove body, second groove body surrounds third admission chamber with second protrusion, and the third admission chamber is used for
The liquid flowed out from second admission chamber is accommodated, the third admission chamber includes third inlet, the third inlet phase
For second inlet closer to the lower port of the tube body.
There are two working conditions for flushing valve tool：
First, oil recovery state, the electric pump of pumped (conveying) medium from below, which flows up, gives rise to ground, standing valve during being somebody's turn to do
In the open state, the circumferential cavity in the first inlet and the second inlet is each filled with liquid, due to the second inlet circumferential direction
The sectional area of cavity is more than the sectional area of the first inlet circumferential direction cavity, and therefore, the first sliding sleeve is kept quiet by upward thrust
Only motionless, at this point, the location of first sliding sleeve can seal leakage fluid dram, leakage fluid dram is between closed state and casing not
Connection, pumped (conveying) medium can be thus lifted to ground by tube body.
Second, well-flushing state injects flushing fluid from well mouth oil pipe, and downward liquid flow enters in flushing valve.Due to
Standing valve has one-way, should during standing valve be closed, liquid cannot be introduced into the second inlet, first into
Liquid choma pushes the first sliding sleeve to move downward to cavity compression force effect, and leakage fluid dram, which is opened to be connected to set, realizes positive well-flushing.When
When one sliding sleeve moves downward, the second feed liquor intracavity liquid is discharged in the closed chamber below standing valve, third inlet corresponds to
Circumferential cavity compression force effect push the second sliding sleeve move downward, increase the volume of third admission chamber, for accommodate second
The liquid of admission chamber discharge, prevents the first sliding sleeve to can not be successfully downslide.
The first stop configurations are provided on the side wall of tube body, the first stop configurations can be to be protruded to tube body external circumferential
Loop wire bulge-structure.First stop configurations are between the third inlet and the first sliding sleeve；The flushing valve includes
First spring, first spring is between first stop configurations and the first sliding sleeve, and first spring is for pushing
First sliding sleeve blocks the leakage fluid dram.Flushing fluid is injected from well mouth oil pipe, downward liquid flow.Since standing valve has
One-way, standing valve is closed during being somebody's turn to do, and liquid cannot be introduced into the second inlet, the first inlet circumferential direction cavity
Compression force effect pushes the first sliding sleeve to compress the first spring and moves downward, and leakage fluid dram, which is opened to be connected to set, realizes positive well-flushing.Well-flushing
After under the thrust of the first spring the first sliding sleeve reset, leakage fluid dram closing.
Be provided with the second stop configurations on the side wall of tube body, second stop configurations be located at the tube body lower port and
Between second sliding sleeve；The flushing valve includes second spring, and the second spring is located at second stop configurations and second and slides
Between set.Before clean-out service, needs to fill liquid into casing and ensure that oil pipe is identical with the pressure of casing, in pushing away for second spring
The second sliding sleeve is in the top position under force effect, is accommodated from second to ensure that third admission chamber has an increasable amount of space
The oil of admission chamber outflow.
Specifically, second stop configurations include annular sleeve wall construction, the annular sleeve wall construction is centered around the pipe
The one end in the outside of body, the second spring is located between the annular jacket wall and tube body.Second spring is fixed by annular jacket wall,
Increase the stability of second spring.
In order to ensure the leakproofness of leakage fluid dram and each admission chamber on flushing valve, the upper port along the tube body is to lower port
Direction, the first sealing structure and second seals structure are provided on the outer wall of the tube body, and the leakage fluid dram is located at described first
Between sealing structure and second seals structure, the leakproofness for increasing the leakage fluid dram blocked by first sliding sleeve.
It is provided with third sealing structure in first protrusion, the second seals structure and third sealing structure are located at described the
The both sides of one admission chamber, the leakproofness for increasing by first admission chamber.
The 4th sealing structure is provided on tube wall, the 4th sealing structure and third sealing structure are located at institute
The opposite sides for stating the second admission chamber, the leakproofness for increasing by second admission chamber.
It is provided with the 5th sealing structure on the outer wall of tube body, the 6th sealing structure is provided in second protrusion, it is described
5th sealing structure and the 6th sealing structure are located at the opposite sides of the third admission chamber, for increasing the third admission chamber
Leakproofness.
Specifically, the sealing structure can be multiple sealing rings being arranged at intervals with, specifically, the same sealing structure
In, the quantity of sealing ring can be two.
The upper port of tube body includes conical external screw thread structure, and the lower port of the tube body is provided with conical internal thread structure,
The better tightness of tapered thread structure, connect even closer with oil pipe and electric pump, is not likely to produce leakage.
Oil production equipment provided in an embodiment of the present invention, including casing, oil pipe, electric pump and above-mentioned flushing valve；The oil pipe
It is connect respectively with the flushing valve with the electric pump.There are two working conditions for flushing valve tool：First, oil recovery state, conveying is situated between
The electric pump of matter from below, which flows up, gives rise to ground, should during standing valve it is in the open state, the first inlet and the
Circumferential cavity in two inlets is each filled with liquid, since the sectional area of the second inlet circumferential direction cavity is more than the first feed liquor choma
To the sectional area of cavity, therefore, the first sliding sleeve is motionless by upward thrust remains stationary, at this point, the position residing for the first sliding sleeve
Leakage fluid dram can be sealed by setting, and leakage fluid dram is in and is not connected between closed state and casing, and pumped (conveying) medium can pass through tube body quilt
It is promoted to ground；Second, well-flushing state injects flushing fluid from well mouth oil pipe, and downward liquid flow enters in flushing valve.By
There is one-way in standing valve, should during standing valve be closed, liquid cannot be introduced into the second inlet, first
Inlet circumferential direction cavity compression force effect pushes the first sliding sleeve to move downward, and leakage fluid dram, which is opened to be connected to set, realizes positive well-flushing.When
When first sliding sleeve moves downward, the second feed liquor intracavity liquid is discharged in the closed chamber below standing valve, third inlet pair
The circumferential cavity compression force effect answered pushes the second sliding sleeve to move downward, and increases the volume of third admission chamber, for accommodating the
The liquid of two admission chambers discharge, prevents the first sliding sleeve to can not be successfully downslide.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of flushing valve, which is characterized in that including：Tube body, the first sliding sleeve, the second sliding sleeve and standing valve, the tube body
Lower port with electric pump for connecting, and for the upper port of the tube body for being connect with oil pipe, the standing valve is described for limiting
Direction of the traffic in tube body is unidirectional, so that the liquid in the tube body can only be from the upward port direction of lower port of the tube body
Pass through the standing valve；
First sliding sleeve is slidably socketed in the outside of the tube body, and second sliding sleeve is slidably socketed on the tube body；
It is provided with the first groove body on the outer wall of the tube body, the first protrusion is provided on the inner wall of first sliding sleeve, and described
First protrusion is located in first groove body, and first groove body is divided into the first admission chamber and the second feed liquor by first protrusion
Chamber；First admission chamber includes the first inlet being connected to the tubular body, second admission chamber include with it is described
Second inlet of tubular body connection；
The sectional area of the second inlet circumferential direction cavity is more than the sectional area of the first inlet circumferential direction cavity；
First inlet and the second inlet are located at the both sides of the standing valve, and first inlet is close
The upper port of the tube body, lower port of second inlet close to the tube body；
Leakage fluid dram is provided on the outer wall of the tube body, and the leakage fluid dram is located on the sliding path of first sliding sleeve, with
When first sliding sleeve being made to slide into the leakage fluid dram aperture position, the leakage fluid dram is blocked；
It is provided with the second groove body on the outer wall of the tube body, the second protrusion, second protrusion are provided on second sliding sleeve
In second groove body, second groove body surrounds third admission chamber with second protrusion, and the third admission chamber is used
In the liquid that receiving is flowed out from second admission chamber, the third admission chamber includes third inlet, the third inlet
Relative to second inlet closer to the lower port of the tube body.
2. flushing valve according to claim 1, which is characterized in that be provided with the first backstop knot on the side wall of the tube body
Structure, first stop configurations are between the third inlet and the first sliding sleeve；The flushing valve includes the first spring, institute
The first spring is stated between first stop configurations and the first sliding sleeve, first spring is for pushing first sliding sleeve
Block the leakage fluid dram.
3. flushing valve according to claim 1, which is characterized in that be provided with the second backstop knot on the side wall of the tube body
Structure, second stop configurations are located between the lower port and the second sliding sleeve of the tube body；The flushing valve includes second spring,
The second spring is between second stop configurations and the second sliding sleeve.
4. flushing valve according to claim 3, which is characterized in that second stop configurations include annular sleeve wall construction,
The annular sleeve wall construction is centered around the outside of the tube body, and one end of the second spring is located at the annular jacket wall and tube body
Between.
5. flushing valve according to claim 1, which is characterized in that along the downward port direction of the upper port of the tube body, institute
It states and is provided with the first sealing structure and second seals structure on the outer wall of tube body, the leakage fluid dram is located at first sealing structure
Between second seals structure, the leakproofness for increasing the leakage fluid dram blocked by first sliding sleeve.
6. flushing valve according to claim 5, which is characterized in that it is provided with third sealing structure in first protrusion,
The second seals structure and third sealing structure are located at the both sides of first admission chamber, for increasing by first admission chamber
Leakproofness.
7. flushing valve according to claim 6, which is characterized in that the 4th sealing structure is provided on the tube wall,
4th sealing structure and third sealing structure are located at the opposite sides of second admission chamber, for increasing described
The leakproofness of two admission chambers.
8. flushing valve according to claim 7, which is characterized in that be provided with the 5th sealing knot on the outer wall of the tube body
Structure, is provided with the 6th sealing structure in second protrusion, and the 5th sealing structure and the 6th sealing structure are located at described the
The opposite sides of three admission chambers, the leakproofness for increasing the third admission chamber.
9. flushing valve according to claim 1, which is characterized in that the upper port of the tube body includes conical external screw thread knot
The lower port of structure, the tube body is provided with conical internal thread structure.
10. a kind of oil production equipment, which is characterized in that including casing, oil pipe, electric pump and described in any one of claim 1-9
Flushing valve；
The oil pipe and the electric pump are connect with the flushing valve respectively.
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| CN201810498380.4A CN108678694B (en) | 2018-05-22 | 2018-05-22 | Well flushing valve and oil production equipment |
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| CN201810498380.4A CN108678694B (en) | 2018-05-22 | 2018-05-22 | Well flushing valve and oil production equipment |
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| CN108678694B CN108678694B (en) | 2020-04-03 |
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| CN207315301U (en) * | 2017-09-28 | 2018-05-04 | 中国石油天然气股份有限公司 | Steam injection valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2276072Y (en) * | 1996-09-24 | 1998-03-11 | 胜利石油管理局采油工艺研究院 | Multifunctional well washing valve |
| CN2591223Y (en) * | 2002-12-17 | 2003-12-10 | 大庆石油管理局 | Contact switch |
| CN201554425U (en) * | 2009-12-21 | 2010-08-18 | 新疆石油管理局采油工艺研究院 | Position-limiting inverted valve |
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| Publication number | Publication date |
|---|---|
| CN108678694B (en) | 2020-04-03 |
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Denomination of invention: Well flushing valve and oil production equipment Effective date of registration: 20230704 Granted publication date: 20200403 Pledgee: Agricultural Bank of China Limited Weihai Wendeng sub branch Pledgor: WEIHAI HONGTONG PIPING MATERIALS Co.,Ltd. Registration number: Y2023980047301 |
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Denomination of invention: Well flushing valve and oil production equipment Granted publication date: 20200403 Pledgee: Agricultural Bank of China Limited Weihai Wendeng sub branch Pledgor: WEIHAI HONGTONG PIPING MATERIALS Co.,Ltd. Registration number: Y2024980029675 |