CN109185120A - A kind of quick plunger of combined type adapting to complicated shaft structure - Google Patents
A kind of quick plunger of combined type adapting to complicated shaft structure Download PDFInfo
- Publication number
- CN109185120A CN109185120A CN201811353702.2A CN201811353702A CN109185120A CN 109185120 A CN109185120 A CN 109185120A CN 201811353702 A CN201811353702 A CN 201811353702A CN 109185120 A CN109185120 A CN 109185120A
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- China
- Prior art keywords
- plunger
- bullet block
- block formula
- lance
- sliding pin
- Prior art date
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000008602 contraction Effects 0.000 claims abstract description 6
- 210000000078 claw Anatomy 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 27
- 239000007788 liquid Substances 0.000 description 13
- 238000007789 sealing Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
- F04B47/04—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/122—Valves; Arrangement of valves arranged in or on pistons the piston being free-floating, e.g. the valve being formed between the actuating rod and the piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of quick plungers of combined type for adapting to complicated shaft structure, including multiple groups bullet block formula plunger, it is connected between adjacent sets bullet block formula plunger by connecting tube, the bullet block formula plunger of the top connects fishing head, the lowermost bullet block formula plunger connection unloading release apparatus, interior motion bar is equipped with inside the tubing string that multiple groups bullet block formula plunger is formed, the interior motion bar includes upper lance and lower lance, radial sliding pin is installed on the bullet block of each bullet block formula plunger, every group of bullet block formula plunger is corresponded on interior motion bar equipped with Nei Shou mechanism, mechanism is received inside equipped with the interior receipts slot with radial sliding pin end phase configuration, pass through the mutual chimeric of interior receipts slot and radial direction sliding pin end, realize that the contraction of bullet block formula plunger outer diameter becomes smaller.The present invention can change the state that traditional plunger will can just make plunger come downwards to shaft bottom by closing well, realize gas well continuous production, improve the lifting efficiency of gas well plunger, adapts to low yield shale gas well and efficiently produces.
Description
Technical field
The present invention relates to a kind of shale gas exploitation tool more particularly to a kind of combined type for adapting to complicated shaft structure are quick
Plunger.
Background technique
Plunger mining is a kind of artificial lifting way for making full use of stratum energy to realize gas well water pumping gas production.Implementing plunger row
In the shale gas well adopted, the effect of plunger primarily as liquids and gases interface, by what is formed from gas well itself
Oil jacket pressure difference enables plunger to run from shaft bottom to well head and takes hydrops in pit shaft out of, reduces flowing bottomhole pressure (FBHP).Under normal conditions,
Plunger and oil pipe take interference fit, and operation mainly controls pneumatic operated valve by ground installation and opens or closes gas well reality up and down
Existing, i.e., when pneumatic operated valve opens gas well liquid loading, plunger band liquid goes upward to well head, and when pneumatic operated valve closes gas well, plunger two-way pressure is flat
Weighing apparatus, and power is lifted by what own wt overcame borehole fluid, oil pipe setting position is come downwards to, in this course, plunger begins
It is bonded eventually with oil pipe holding.Realize that this control mode of plunger operating status switching is brought by ground installation control gas well switch
Two practical problems: just plunger can be made to come downwards to oil pipe setting position first is that needing to close gas well, contracted to a certain extent
The short gas well continuous production time；Even if second is that plunger close gas well situation under downlink, also can be because of the gas well in oil pipe
The effect of lifting causes plunger meeting downlink slow, also the production efficiency of the entire technology of influence power.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of adapt to again in view of the deficiency of the prior art
The quick plunger of the combined type of miscellaneous shaft structure adapts to low yield shale gas well and efficiently produces to improve the lifting efficiency of gas well plunger.
The technical scheme adopted by the invention is as follows: adapt to the quick plunger of combined type of complicated shaft structure, it is characterised in that:
It including multiple groups bullet block formula plunger, is connected between adjacent sets bullet block formula plunger by connecting tube, the bullet block formula plunger connection of the top
Fishing head, the lowermost bullet block formula plunger connection unloading release apparatus, is equipped with inside the tubing string that multiple groups bullet block formula plunger is formed
Interior motion bar, the interior motion bar include upper lance and lower lance, are installed with radial sliding pin on the bullet block of each bullet block formula plunger,
Every group of bullet block formula plunger is corresponded on interior motion bar equipped with Nei Shou mechanism, is received mechanism inside and is equipped with and the matching of radial sliding pin end
The interior receipts slot set, by the mutual chimeric of interior receipts slot and radial sliding pin end, realization bullet block formula plunger outer diameter, which is shunk, to become smaller.
According to the above technical scheme, the interior receipts slot is dovetail groove, the tip shapes and dovetail groove phase configuration of radial sliding pin.
According to the above technical scheme, the bullet block formula plunger includes plunger body, at least provided with one group of bullet in plunger body
Block, every group of bullet block include the multiple bullet blocks being evenly arranged along plunger body circumferential direction, outside the bullet block inner wall and plunger body
Reset spring is abutted between wall, the both ends of bullet block are fitted in the both ends groove of plunger body by the connector at its both ends, often
Group bullet block is correspondingly arranged one group of radial direction sliding pin, and every group of radial direction sliding pin is corresponded in plunger body equipped with radial through-hole, radial sliding pin
External end head stretch out radial through-hole outside, and with radial through-hole slide configure.
According to the above technical scheme, the Nei Shou mechanism is the spline being installed on interior motion bar, in being circumferentially with for spline
The quantity of multiple dovetail grooves, dovetail groove is identical as the quantity of radial sliding pin on bullet block formula plunger, and sliding pin outer end is that a wedge shape is convex
Platform, the two sides of the wedge-shaped boss of sliding pin are flank face, and the upper and lower side in flank face is to the inclined inclined-plane in bullet block side, the dovetail groove
Lower end be the inclined-plane being inclined outwardly matched with sliding pin flank face.
According to the above technical scheme, the top of upper lance is equipped with positive stop lug boss, the stepped hole phase configuration with fishing head, lower lance
Lower part be equipped with positive stop lug boss, with unloading release apparatus stepped hole phase configuration.
According to the above technical scheme, the upper end of lock claw 8 is band internal thread annular element, is circumferentially set in the lower end of annular element
There are multiple cleft hands, the lower end inner wall of cleft hand is equipped with the boss to centerline direction protrusion, with the groove phase configuration on lance.
According to the above technical scheme, the interior motion bar include the upper lance being sequentially connected, lantern ring, memotron, interlocking bar, under
Lance is equipped with two groups of bullet block formula plungers, and first group of bullet block formula plunger is correspondingly arranged at lance, and interior receipts are equipped at upper lance
Second group of bullet block formula plunger is arranged at interlocking bar, and is correspondingly arranged Nei Shou mechanism for mechanism.
It according to the above technical scheme, is a cavity structure inside storage tube, for the test equipment under storage well, realization pair
To the test of the data such as temperature, pressure and record in pit shaft.
According to the above technical scheme, be equipped with oblong radial long hole on lance, aperture length and lance maximum downstream away from
From being adapted, stop pin is coated in oblong radial through-hole, the both ends of the stop pin, which are installed in plunger body, to be arranged
Through hole in.
According to the above technical scheme, the unloading release apparatus includes pressure release set, valve rod, unloaded spring, adjusting nut, described
Pressure release set is internally provided with a taper relief hole, and the conical surface of the taper relief hole is adapted with valve rod；Stem outer circumference, which is set with, to be unloaded
Spring is carried, one end of the unloaded spring and the end face of taper relief hole abut against, lower end and the adjustment for being installed in valve rod lower end
Nut end face abuts against, the lowermost lance protrude into the centre bore of valve rod and with its seal arrangement, be equipped with and let out on pressure release set
Hole is pressed, the lower end of the pressure release set is connected with lower contact.
It is obtained by the present invention to have the beneficial effect that
1, the present invention can make all gas wells using the plunger pass through plunger after plunger fast uplink to well head
Impact, makes the lance of the top be forced downlink, to switch the sealing state of plunger, realizes by gravity in the gas produced
Fast downlink is to shaft bottom in well；After plunger quickly reaches shaft bottom, by the impact of plunger, lower lance is made to be forced uplink, thus
Make bullet block restore with the sealing state of oil pipe, realize by plunger pressure difference up and down, make plunger band liquid and fast uplink is to well head, such as
This reciprocal gas well can change the state that traditional plunger will can just make plunger come downwards to shaft bottom by closing well, realize that gas well is continuous
Production.
2, by setting unloading release apparatus, making the head of liquid of plunger upper part is more than to adjust the predetermined design pressure for carrying spring
Power, the valve rod i.e. downward compressed spring of meeting, and plunger upper part fluid is allow to put on the relief hole of setting by pressure release, leak into column
It fills in the oil pipe of lower part, until adjusting load spring that can overcome head of liquid that sealed valve stem is made to restore sealing state, to realize unloading
Purpose is imitated to realize and carry out a small amount of repeatedly band liquid in big liquid measure gas well.
3, it by the way that storage tube is arranged may be implemented that a variety of test equipments are installed in plunger, in order to test and record underground
Various data, due to plunger can the multiple uplink and downlink in well, and can be captured in well head, therefore can change original
It relies only in such a way that tripping in steel wire or coiled tubing carry out downhole data test, operating cost can be greatly reduced.
Detailed description of the invention
Fig. 1 is structure chart of the invention.
Fig. 2 is the partial enlarged view of sliding pin and spline.
Fig. 3 is viewgraph of cross-section when sliding pin does not interact also with spline.
Fig. 4 is sliding pin and the viewgraph of cross-section that spline interaction is.
1, upper lance；2, fishing head；3, upper stop pin；4, bullet block；5, sliding pin；6, reset spring；7, upper body；8, it locks
Pawl；9, connecting tube；10, lantern ring；11, storage tube；12, interlocking bar；13, connector sleeve；14, lower lock claw；15, lower body；16, middle branch
Ring；17, lower stop pin；18, pressure release set；19, lower lance；20, unloaded spring；21, valve rod；22, adjusting nut；23, lower contact.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, present embodiments providing a kind of quick plunger of combined type for adapting to complicated shaft structure, including multiple groups
Bullet block formula plunger, every group of bullet block formula plunger include at least one bullet block formula plunger, pass through connection between adjacent sets bullet block formula plunger
Pipe 9 connects, and the bullet block formula plunger of the top connects fishing head 2, the lowermost bullet block formula plunger connection unloading release apparatus.More
It is equipped with interior motion bar inside the tubing string that group bullet block formula plunger is formed, interior motion bar includes upper lance and lower lance, each bullet block formula
It is installed with radial sliding pin on the bullet block of plunger, upper corresponding each bullet block formula plunger is equipped with Nei Shou mechanism on interior motion bar, inside
It receives mechanism and is equipped with interior receipts slot with radial sliding pin end phase configuration, by the mutual chimeric of interior receipts slot and radial direction sliding pin end,
Realize that the contraction of bullet block formula plunger outer diameter becomes smaller.
The bullet block formula plunger includes plunger body, and at least provided with one group of bullet block in plunger body, every group of bullet block includes
The multiple bullet blocks being evenly arranged along plunger body circumferential direction abut between the bullet block inner wall and plunger body outer wall and reset bullet
The both ends of spring, bullet block are embedded in the both ends groove of plunger body by the connector at its both ends, and every group of bullet block is correspondingly arranged one
The radial sliding pin of group corresponds to every group of radial direction sliding pin equipped with radial through-hole in plunger body, and the external end head of radial sliding pin stretches out radial
Outside through-hole, and slides and configure with radial through-hole.
The present embodiment is illustrated for being equipped with two groups of bullet block formula plungers, in the plunger body of first group of bullet block formula plunger
Equipped with one group of bullet block, the plunger body of second group of bullet block formula plunger is equipped with two groups of bullet blocks, and for the ease of distinguishing, the present embodiment will
Bullet block formula plunger in first group is named as bullet block formula plunger, and the bullet block formula plunger in second group is named as lower bullet block formula column
Plug.It is connected between first group of bullet block formula plunger and second group of bullet block formula plunger by connecting tube 9.Wherein, interior motion bar include according to
Secondary connected upper lance, lantern ring, memotron, interlocking bar, lower lance are equipped with two groups of bullet block formula plungers, first group of bullet block formula plunger
It is correspondingly arranged at lance, Nei Shou mechanism is equipped at upper lance, second group of bullet block formula plunger is set at interlocking bar, and right
Nei Shou mechanism should be set.Wherein Nei Shou mechanism is corresponding with the group number quantity of bullet block.
The bullet block formula plunger includes plunger body 7, and the top of plunger body 7 is provided with external screw thread and realizes and fishing head 2
It is threadedly coupled, lower part is provided with external screw thread realization and connect with connecting tube 9；4 bullets have been evenly arranged in 7 circumferential direction of plunger body
Block 4, abuts two groups of reset springs 6 (being symmetrical set) between 4 inner wall of bullet block and 7 outer wall of upper prop plug body, and the two of bullet block 4
End is embedded in the both ends groove of plunger body, and is fitted in groove by fishing head 2 and connecting tube 9 respectively.The bullet block 4
Outer surface may be implemented effectively to be bonded with oil pipe, and plunger is allow to seal oil pipe to the greatest extent；The bullet block 4 and plunger body
Reset spring 6 is installed, in the operating condition, reset spring 6, which is compressed and generates elastic force, effectively supports bullet block 4, makes between 7
Bullet block 4 can effectively combine tube inner wall；The both ends of bullet block 4 limit is realized by fishing head 2 and connecting tube 9.Each bullet block formula
It is installed with radial sliding pin 5 on the bullet block 4 of plunger, radial through-hole is equipped in plunger body 7, the external end head of radial sliding pin 5 stretches out
Outside radial through-hole, and slides and configure with radial through-hole.
It is equipped with positive stop lug boss on upper lance 1, is abutted against with the stepped hole of fishing head 2, the lower end of the lowermost lance 19
Stepped hole phase configuration equipped with positive stop lug boss, with unloading release apparatus.
The Nei Shou mechanism is the spline 24 being installed on lance 1, is circumferentially with multiple dovetail grooves 25, swallow in spline 24
The quantity of stern notch 25 is identical as the quantity of radial sliding pin 5 on bullet block formula plunger.The shape phase of the opening of spline and sliding pin outer end
Adaptation.In the present embodiment, 5 outer end of sliding pin is a wedge-shaped boss, and the two sides of the wedge-shaped boss of sliding pin are flank face 27, flank face 27
Upper and lower side be to the inclined inclined-plane 28 in bullet block side, the lower end of the dovetail groove is to be inclined outwardly with what sliding pin flank face matched
Inclined-plane 26.
For the wedge-shaped boss in upper 1 downlink of lance, the lower end inclined-plane and the inclined-plane in sliding pin flank face of dovetail groove are mutual
Cooperation generates the power of a radial direction to sliding pin, to make sliding pin to Combined plunger piston center line side under the action of inclined-plane
To movement, enable what bullet block 4 linked spring is inwardly compressed, and realize contraction, when the inclined-plane and spline in the flank face of sliding pin
Inclined-plane cooperation after the completion of, the middle part flank face of sliding pin slides into wide dovetail groove, by splines all on Combined plunger piston with
The cooperative movement of sliding pin realizes that the contraction of entire plunger outer diameter becomes smaller, the result that this outer diameter becomes smaller can upper lance reset with
After return to original state.
In the present embodiment, it is also threaded with lock claw 8 in the lower end of plunger body 7, the upper end of lock claw 8 is with internal screw thread
Annular element, in the lower end of annular element circumferentially arranged with multiple cleft hands, the lower end inner wall of cleft hand is equipped with to centerline direction protrusion
Boss, and the groove phase configuration on lance, due to each cleft hand be it is spaced, the lower end for the lock claw that cleft hand is formed has
Certain elastic force.
When the positive stop lug boss of upper lance 1 and the stepped hole of fishing head 2 abut against, it is in top dead-centre, i.e. table on positive stop lug boss
Face is contacted with fishing head internal end surface, and the upper lance 1 is in after top dead center, protrusion and the groove phase on upper lance 1 of lock claw 8
Cooperation, the i.e. high spot of lock claw 8 are exactly in the groove of lance, because lock claw can produce certain elastic force, can keep away
Exempt from upper lance and generates movement；The upper lance 1 can generate a downward power, make the recessed of lance 1 after top is hit
Slot can strut the cleft hand of lock claw, and downlink certain distance, this distance can be such that spline and sliding pin generation on lance matches
It closes, realizes that bullet block is shunk by hitting upper lance to realize.
Oblong radial long hole is equipped on upper lance 1, aperture length is adapted with upper lance maximum downstream distance,
Stop pin 3 is coated in oblong radial through-hole, the both ends of the stop pin 3 are installed on the through hole being arranged in plunger body 7
It is interior.
In the present embodiment, upper 1 lower part of lance is provided with external screw thread, is sequentially connected with lantern ring 10, storage tube 11.The lantern ring
10, which are internally provided with the external screw thread realization that internal screw thread is arranged with upper 1 lower part of lance, is fastenedly connected, and is a sky inside storage tube 11
Cavity configuration is realized for the test equipment under storage well to the test of the data such as temperature, pressure and record in pit shaft.
The connecting tube lower part is connected with connector sleeve 13 in turn, by connector sleeve 13 connect second group of bullet block formula plunger after again
Pressure release set 18 is connected, the structure of second group of bullet block formula plunger is identical as first group of structure of block formula plunger of being hit by a bullet, i.e. each group of column
Spring is mounted between the bullet block and lower body of plug, the sliding pin being arranged on bullet block is adapted with corresponding spline, Ke Yi
When upper lance is hit, sliding pin is made to move inward certain distance, and band block of moving is realized and shunk；Second group of bullet block formula plunger
Two bullet blocks are fitted in the groove of lower body by middle supporting ring between two bullet block formula plungers, are additionally provided with one on lower body top
Internal thread hole, realization are fastenedly connected with lower lock claw 14；It is additionally provided with pass through aperture in the middle part of the lower body, installation in the through hole
There is lower stop pin 17, the both ends of the lower stop pin 17 are installed on the mounting hole of middle supporting ring.
In the present embodiment, 11 lower part of storage tube is sequentially installed with interlocking bar 12, lower lance.In the interlocking bar under upper
Fluted, spline, boss etc. is respectively set, the spline quantity is identical as the group number of Combined plunger piston；The interlocking bar top
It is provided with a groove and is adapted to lower lock claw, i.e., when upper lance is in top dead center, the high spot of lower lock claw is exactly in connection
In the groove of lever, because lock claw can produce certain elastic force, movement can be generated to avoid interlocking bar；The upper lance is pushing up
After portion is hit, a downward power can be generated, the groove of interlocking bar is enable to strut lock claw, and downlink certain distance, this
One distance can make the sliding pin of spline and combined plunger in interlocking bar generate cooperation, be realized to realize by hitting upper lance
Whole bullet blocks are shunk.
In the present embodiment, the flowing hole 29 being connected with inner passage, the unloading release apparatus are equipped on fishing head
18, valve rod 21, unloaded spring 20, adjusting nut 22 are covered including pressure release, the pressure release set 18 is internally provided with a taper relief hole,
The conical surface of the taper relief hole is adapted with valve rod 21；21 periphery of valve rod is set with unloaded spring 20, the unloaded spring 20
One end and the end face of taper relief hole abut against, and lower end is abutted against with 22 end face of adjusting nut, and the adjusting nut 22 is mounted on
Pressure release covers at the internal screw thread of 18 lower parts setting, and by adjusting the installation site of screw thread, unloaded spring is compressed in realization, and
The size for changing spring force realizes the adjustment to valve rod lower thrust by changing spring force size；The pressure release covers 18 lower bodies
Interior screw thread is also connected with lower contact 23.The lowermost lance 19 protrude into the centre bore of valve rod 21 and with its seal arrangement,
Pressure release set 18 is equipped with relief hole.
The quick plunger of combined type of the complicated shaft structure of the adaptation that the present invention is introduced is hit by successively installing in inside
Bar, storage tube, interlocking bar, the mode of lower lance realize by hitting upper 1 top of lance, shrink whole bullet blocks, switch column
The original sealing state of bullet block is filled in, i.e., by the upper lance of shock, whole bullet blocks contractions is made not fit closely tube inner wall, thus
The Fast-Balance of plunger two-way pressure is realized, and reduces the effect of lifting of gas in oil pipe.The significant benefit of its bring is exactly,
It can make all gas wells using the plunger, after plunger fast uplink to well head, by the impact of plunger, be forced lance
Downlink realizes by gravity in the gas well produced fast downlink to shaft bottom to switch the sealing state of plunger；In column
After plug quickly reaches shaft bottom, by the impact of plunger, lower lance is made to be forced uplink, so that bullet block be made to restore the seal shape with oil pipe
State is realized by pressure difference above and below plunger, makes plunger band liquid and fast uplink is to well head, and so on gas well can change tradition
Plunger will can just make plunger come downwards to the state in shaft bottom by closing well, realize gas well continuous production.
The present invention makes the fluid column pressure of plunger upper part by setting pressure release set, lower lance, unloaded spring, valve rod, adjusting nut
Power is more than the predetermined design pressure (liquid of plunger upper part flows into internal from the flowing hole on fishing head) adjusted and carry spring, and valve rod is
Unloaded spring can be compressed downwards, and plunger upper part fluid is allow to put on the relief hole of setting by pressure release, leaked under plunger
In portion's oil pipe, until unloaded spring can overcome head of liquid that sealed valve stem is made to restore sealing state, to realize the purpose of unloading,
To realize that carrying out a small amount of repeatedly band liquid in big liquid measure gas well imitates.
The present invention may be implemented to install a variety of test equipments in plunger by the way that storage tube is arranged, in order to test and record
The various data in underground, due to plunger can the multiple uplink and downlink in well, and can be captured in well head, therefore can change
It originally relies only in such a way that tripping in steel wire or coiled tubing carry out downhole data test, operating cost can be greatly reduced.
Claims (10)
1. a kind of quick plunger of combined type for adapting to complicated shaft structure, it is characterised in that: adjacent including multiple groups bullet block formula plunger
It is connected between group bullet block formula plunger by connecting tube, the bullet block formula plunger of the top connects fishing head, the lowermost bullet block formula column
Plug connection unloading release apparatus, is equipped with interior motion bar, the interior motion bar packet inside the tubing string that multiple groups bullet block formula plunger is formed
Lance and lower lance are included, radial sliding pin is installed on the bullet block of each bullet block formula plunger, every group of bullet is corresponded on interior motion bar
Block formula plunger is equipped with Nei Shou mechanism, receives mechanism inside equipped with the interior receipts slot with radial sliding pin end phase configuration, passes through interior receipts slot
It is mutual chimeric with radial sliding pin end, realize that the contraction of bullet block formula plunger outer diameter becomes smaller.
2. the quick plunger of combined type according to claim 1, it is characterised in that: the interior receipts slot is dovetail groove, radial sliding
The tip shapes and dovetail groove phase configuration of pin.
3. the quick plunger of combined type according to claim 1 or 2, it is characterised in that: the bullet block formula plunger includes plunger
Ontology, at least provided with one group of bullet block in plunger body, every group of bullet block include be evenly arranged along plunger body circumferential direction it is more
A bullet block, abuts reset spring between the bullet block inner wall and plunger body outer wall, the both ends of bullet block pass through the connection at its both ends
Part is fitted in the both ends groove of plunger body, and every group of bullet block is correspondingly arranged one group of radial direction sliding pin, corresponding every in plunger body
The radial sliding pin of group is equipped with radial through-hole, and the external end head of radial sliding pin stretches out outside radial through-hole, and slides and configure with radial through-hole.
4. the quick plunger of combined type according to claim 3, it is characterised in that: the Nei Shou mechanism is to be installed in interior activity
Spline on bar, in multiple dovetail grooves that are circumferentially with of spline, quantity and the radial sliding pin on bullet block formula plunger of dovetail groove
Quantity is identical, and sliding pin outer end is a wedge-shaped boss, and the two sides of the wedge-shaped boss of sliding pin are flank face, the upper and lower side in flank face be to
The inclined inclined-plane in bullet block side, the lower end of the dovetail groove are the inclined-plane being inclined outwardly matched with sliding pin flank face.
5. the quick plunger of combined type according to claim 1 or 2, it is characterised in that: the top of upper lance is equipped with limit convex
The lower part of platform, the stepped hole phase configuration with fishing head, lower lance is equipped with positive stop lug boss, matches with the stepped hole of unloading release apparatus
It sets.
6. the quick plunger of combined type according to claim 1 or 2, it is characterised in that: the upper end of lock claw 8 is with internal screw thread
Annular element, in the lower end of annular element circumferentially arranged with multiple cleft hands, the lower end inner wall of cleft hand is equipped with to centerline direction protrusion
Boss, with the groove phase configuration on lance.
7. the quick plunger of combination according to claim 1 or 2, it is characterised in that: the interior motion bar includes being sequentially connected
Upper lance, lantern ring, memotron, interlocking bar, lower lance, be equipped with two groups of bullet block formula plungers, first group of bullet block formula plunger correspondence is set
It sets at upper lance, Nei Shou mechanism is equipped at upper lance, second group of bullet block formula plunger is set at interlocking bar, and is correspondingly arranged
Nei Shou mechanism.
8. the quick plunger of combined type according to claim 7, it is characterised in that: it is a cavity structure inside storage tube,
For the test equipment under storage well, realize to the test of the data such as temperature, pressure and record in pit shaft.
9. the quick plunger of combination according to claim 1 or 2, it is characterised in that: it is radially long to be equipped with oblong on lance
Hole, aperture length are adapted with lance maximum downstream distance, and stop pin, the anti-rotation are coated in oblong radial through-hole
The both ends of pin are installed in the through hole being arranged in plunger body.
10. the quick plunger of combination according to claim 1 or 2, it is characterised in that: the unloading release apparatus includes pressure release
Set, valve rod, unloaded spring, adjusting nut, the pressure release set are internally provided with a taper relief hole, the conical surface of the taper relief hole
It is adapted with valve rod；Stem outer circumference is set with unloaded spring, and one end of the unloaded spring and the end face of taper relief hole offset
It connects, lower end is abutted against with the adjusting nut end face for being installed in valve rod lower end, and the lowermost lance protrudes into the centre bore of valve rod simultaneously
With its seal arrangement, relief hole is equipped on pressure release set, the lower end of the pressure release set is connected with lower contact.
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| CN201811353702.2A CN109185120B (en) | 2018-11-14 | 2018-11-14 | Combined quick plunger adapting to complex shaft structure |
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| CN201811353702.2A CN109185120B (en) | 2018-11-14 | 2018-11-14 | Combined quick plunger adapting to complex shaft structure |
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| CN109185120B CN109185120B (en) | 2024-09-10 |
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| CN112253447A (en) * | 2020-10-21 | 2021-01-22 | 西南石油大学 | Be suitable for new plunger of local undergauge plunger drainage gas production of tubular column in pit |
| CN114837631A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Disc type plunger |
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| CN109185120B (en) | 2024-09-10 |
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Effective date of registration: 20191230 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC Address before: 430035 Hubei city in Wuhan province two Qiaokou Gutian Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Applicant before: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC |
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