CN209129584U - A kind of plunger mining device adapting to low yield shale gas well - Google Patents
A kind of plunger mining device adapting to low yield shale gas well Download PDFInfo
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- CN209129584U CN209129584U CN201821381362.XU CN201821381362U CN209129584U CN 209129584 U CN209129584 U CN 209129584U CN 201821381362 U CN201821381362 U CN 201821381362U CN 209129584 U CN209129584 U CN 209129584U
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- plunger
- bullet block
- block formula
- mining device
- valve stem
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Abstract
The utility model discloses a kind of plunger mining devices for adapting to low yield shale gas well, including multiple groups bullet block formula plunger, it is connected between adjacent sets bullet block formula plunger by support cylinder, the bullet block formula plunger of the top connects fishing head, and the lowermost bullet block formula plunger is sequentially connected unloading release apparatus and seeker.Plunger mining device is when top Combined plunger piston shrinks generation certain leakage when undergauge in through well, bottom plunger still can keep normal sealing state, and when top bullet block formula plunger restores normal sealing state by seating nipple, lower part bullet block formula plunger passes through the seal operation cylinder for having locking again, in such a way that at least two groups bullet block formula plunger passes sequentially through locking, to control the leak rate of plunger, the lifting efficiency of gas well plunger is improved.
Description
Technical field
The utility model relates to a kind of shale gas exploitation tool more particularly to a kind of plunger rows for adapting to low yield shale gas well
Device for picking.
Background technique
The development features of shale gas are the quick failure of early yield, but later period stable production period is long, and gas well will be at the long period
In low yield state, it is necessary to corresponding technique be taken to guarantee shale gas well later period water pumping gas production needs.Plunger mining technology can mention
Lifting efficiency of the high gas well under low yield state, extends the life cycle of gas well, is applied in conventional gas well.Due to preceding
Phase fracturing reform needs, and has been respectively mounted big orifice slide valve in the well head of shale gas well, and take for the ease of tubing string in well is with pressure
Out, seal operation cylinder has also been respectively mounted on tubing string.This special shaft structure of shale gas well makes implementing plunger lift
When face two problems: first is that well head, there are expanding, plunger can lose righting in operation to well head, lead to bias, traditional
Plunger, which can not reach well head capturing device or even can not rerun, to converge in oil pipe, and plunger lift is caused to interrupt or fail；Second is that
There are undergauges in well, and the rigid plunger that can routinely run in blank tubing can not be by undergauge, or even accident occurs, even if right
Plunger has carried out shrinkable improvement, similarly will lead to and a large amount of leakage occurs when plunger is by seal operation cylinder, make plunger
Gaslift loses meaning.Two above-mentioned problems lead to the job requirement that shale gas well is unable to satisfy using conventional plunger.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of energy in view of the deficiency of the prior art
Improve the plunger mining device of the adaptation low yield shale gas well of the lifting efficiency of gas well plunger.
The technology employed by the present utility model is adapting to the plunger mining device of low yield shale gas well, feature exists
In: including multiple groups bullet block formula plunger, it is connected between adjacent sets bullet block formula plunger by support cylinder, the bullet block formula plunger connection of the top
Fishing head, the lowermost bullet block formula plunger are sequentially connected unloading release apparatus and seeker.
According to the above technical scheme, the unloading release apparatus includes outer cylinder, and valve seat, sealing valve are successively installed in outer cylinder
Bar adjusts load spring, adjusting nut, and centre bore is equipped in the sealed valve stem, and the upper end is equipped with valve chamber, and valve ball is equipped in valve chamber
And baffle, the lower end of sealed valve stem is set with tune and carries spring, and adjusts its decrement by adjusting nut, makes sealed valve stem and valve
Seat seal arrangement, is equipped with annular space between sealed valve stem and outer cylinder, and the radial hole being connected with annular space is equipped on outer cylinder, is being adjusted
Section nut is equipped with the axial hole being connected with annular space.
According to the above technical scheme, the lower end of the valve chamber is sealing cone, is used to be equipped with valve ball seal arrangement, baffle
Multiple flowing holes.
According to the above technical scheme, the valve seat and sealed valve stem are configured by conical surface seal.
According to the above technical scheme, every group of bullet block formula plunger includes central tube with a central hole and at least sets on central tube
The two bullet block formula plungers set, the bullet block formula plunger include several metal ring plates, radial righting spring, and several metal ring plates are enclosed
Synthesis of cyclic, the both ends inner wall of each metal ring plate abut radial righting spring respectively, and both ends limit the ring in central tube respectively
In slot.
According to the above technical scheme, the fishing head includes ontology, is equipped with boss in the upper end of ontology, inside is equipped with and center
The interface channel that tube hub hole is connected.
According to the above technical scheme, the interface channel includes the blind hole that ontology lower end is arranged in, the side being connected with blind hole
Xiang Kong.
It is had the beneficial effect that acquired by the utility model
1, the support cylinder both ends of the utility model, which are separately installed with combined type bullet block plunger, makes column by this connection type
Fill in mining device in through well when undergauge top Combined plunger piston shrink generation centainly leak when, bottom plunger still may be used
To keep normal sealing state, and when top bullet block formula plunger restores normal sealing state by seating nipple, lower part bullet
Block formula plunger passes through the seal operation cylinder for having locking again, in such a way that at least two groups bullet block formula plunger passes sequentially through locking, with
The leak rate for controlling plunger, improves the lifting efficiency of gas well plunger.By this connection type, extend the length of plunger with
Greater than the height of the expanding position of well head, make plunger when expanding by well head, plunger is still to leave oil pipe, and rely on oil pipe always
It keeps placed in the middle, can smoothly be reached at well head capture device with plunger.
2, by setting unloading release apparatus, once the head of liquid of plunger upper part is excessively high and is more than to adjust to carry the predetermined of spring
Design pressure, the sealed valve stem i.e. downward compressed spring of meeting, and allow plunger upper part fluid by sealed valve stem, leak into plunger
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 the mesh of unloading
, by this new unloading manner, so that plunger is carried out a small amount of repeatedly band liquid in big liquid measure gas well and imitate, and can be in stratum energy
It measures and realizes escape in insufficient situation, to give full play to the lifting efficiency of plunger, widen the application range of plunger, adapt to shale gas
The mining requirement in low yield stage in well later period.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, present embodiments providing a kind of plunger mining device for adapting to low yield shale gas well, including multiple groups bullet
Block formula plunger is connected between adjacent sets bullet block formula plunger by support cylinder 9, and the bullet block formula plunger of the top connects fishing head 1, most lower
The bullet block formula plunger at end is sequentially connected unloading release apparatus and seeker 19.The present embodiment one be equipped with two groups of bullet block formula plungers, one
It is illustrated for a support cylinder.
Every group of bullet block formula plunger includes central tube 20 with a central hole and two bullets being at least arranged on central tube 20
Block formula plunger, the bullet block formula plunger include several metal ring plates 5, radial righting spring 4, and several metal ring plates 5 enclose cyclization
Shape, the both ends inner wall of each metal ring plate 5 abut radial righting spring 4 respectively, the both ends of metal transposition 5 are located on central tube
It is respectively arranged with annular groove, two metal ring plates 5 of the two bullet block formula plungers that are connected limit the becket in annular groove by middle supporting ring 7
Certain compression space is equipped between the end and annular groove of piece, convenient for the radial expansion of metal ring plate.Wherein, middle supporting ring 7 passes through
Positioning pin 6 is fixed on central tube, and the upper end of the metal ring plate of the bullet block formula plunger on first group of top passes through fishing head 1 in figure
Lower end is limited, and the lower end of the metal ring plate of the bullet block formula plunger of lower part is limited by the upper end of connector 8, the two
Limit method it is identical with the limit method of middle supporting ring 7.Metal ring plate 5 can be bonded oil under the action of the spring after entering well
Inside pipe wall simultaneously keeps sealing, and makes to form a seal interface in pit shaft, and stratum energy acts on plunger, push plunger and its
The fluid outflow pit shaft on top is to release wellbore effusion.When through seal operation cylinder in oil pipe, bullet block compressed spring is simultaneously shunk
To reduce the fluid leakage of plunger upper part, utmostly reduce plunger leak rate by seating nipple.
The fishing head includes ontology 2, and ontology 2 is fixed on central tube 20 by screw 3, is equipped in the upper end of ontology 2
Boss, mainly to take out downhole tool using steel wire operation when the abnormal conditions such as sand card occur for plunger.In the inside of ontology 2
Equipped with the interface channel being connected with central tube centre bore, it is used as production channel.The interface channel includes being arranged under ontology
The blind hole 21 at end, the sidewise hole 22 being connected with blind hole.
The both ends of support cylinder 9 pass through connector 8 respectively and are connected with two groups of bullet block formula plungers, and support cylinder 9 is that a both ends have spiral shell
The pipe of line, it is internal that test equipment is installed, and it is equipped with production channel, to realize fluid in the condition to install instruments
Under, pass through support cylinder.
The unloading release apparatus is connected by change connector 10 with the central tube of second group of bullet block formula plunger.It is described to unload
Carrying release apparatus includes outer cylinder 17, and valve seat 11, sealed valve stem 15 are successively installed in outer cylinder 17, adjusts load 16, adjusting nut 18,
Centre bore is equipped in the sealed valve stem 15, the upper end is equipped with valve chamber, and the top of valve chamber is equipped with baffle 13, is internally provided with valve ball
14, the lower end of the valve chamber is sealing cone, for 14 seal arrangement of valve ball, multiple flowing holes are equipped on baffle 13.It is close
The lower end for sealing valve rod is equipped with limited step, carries spring 16 for being set with to adjust, and adjust its decrement by adjusting nut 18, makes
Sealed valve stem 15 and valve seat 11 are configured by conical surface seal, annular space are equipped between sealed valve stem 15 and outer cylinder 17, in outer cylinder 17
It is equipped with the radial hole that is connected with annular space, constitutes the first current by pass, is equipped on adjusting nut 18 and to be connected with annular space
Axial hole constitutes the second current by pass.
Valve ball 14 and the conical surface are able to maintain sealing during plunger mining device uplink.In plunger mining device downlink mistake
Cheng Zhong, valve ball 14 leave the conical surface, it is ensured that fluid can enable plunger mining device to reduce resistance by centre bore, under quick
Row.It is described to adjust the relevant parameter for carrying the decrement of spring according to gas well, it is set by the adjusting nut 18 of lower part.It is normal in plunger
During uplink and downlink, adjust load spring 18 that sealed valve stem is made to be kept in contact and seal with corresponding valve seat always.Once plunger
The head of liquid on top is excessively high and is more than to adjust the predetermined design pressure for carrying spring 18, and sealed valve stem 18 i.e. can downward compressed spring
16, and allow plunger upper part fluid by sealed valve stem 18, it leaks into the oil pipe of plunger lower part, until adjusting load spring 16 can
Overcome head of liquid that sealed valve stem is made to restore sealing state, to realize the purpose of unloading.By this new unloading manner, make column
Plug carries out a small amount of repeatedly band liquid in big liquid measure gas well and imitates, and escape can be realized in the insufficient situation of stratum energy, to fill
The lifting efficiency of plunger is waved in distribution, widens the application range of plunger, adapts to the mining requirement in shale gas well later period low yield stage.
The target seeker 19 is that a top is helicitic texture, during lower part is a conical socket cap and inside has
The apparatus structure in heart hole is connected to off-loadable release apparatus lower end, so that plunger has good guiding function and overcurrent effect.
The specific implementation step of the present embodiment are as follows: need to implement the shale gas well installation steel wire operation blowout prevention of plunger mining
Pipe, and according to the dimensional parameters of downhole production string size, well head gas producing device latus rectum and plunger, using suitable gauguste cutter,
It connects at drifting tool string and drifting to plunger depth of setting.If can normally drifting be put into well suitable to projected depth
The fastener matched, and gas wellhead equipment is installed, the electrified workflow reengineering of ground control unit is completed, by plunger mining device
It is put into catcher, after determining that production procedure is poured into place, standard-sized sheet well valve opens catcher switch, allows plunger mining device
It automatically falls into well.When wellhead shut-in casing pressure, which reaches, drives a well pressure, plunger controller opens film by Pneumatic pressure signal
Valve carries out opening well and making production.If plunger upper part liquid level is excessively high, sealed valve stem 15 can compress pressure spring 16 automatically, make top liquid
Column can be leaked into below plunger, by the current by pass of plunger mining device so that stratum can be enough to push on plunger and plunger
Portion's fluid column goes upward to well head, to meet gas stringer production requirement.During plunger downlink, downhole well fluid can open close
It seals 15 inside valve ball 14 of valve rod and shortens the downgoing time of plunger, to mitigate lift effect of the borehole fluid to plunger to improve gas
The lifting efficiency of well plunger.
The plunger mining device described in the utility model for adapting to low yield shale gas well passes through fishing head, bullet block plunger, survey
Test instrument support cylinder, bullet block plunger, off-loadable release apparatus and target seeker etc. are successively linked in sequence, and actually become one and possess one
The combined labyrinth and carbon gland plunger of measured length.The test equipment support cylinder both ends are separately installed with combined type bullet block plunger.Pass through this
Kind connection type, making plunger mining device, top bullet block formula plunger shrinks the certain leakage of generation when undergauge in through well
When, lower part bullet block formula plunger still can keep normal sealing state, and when upper group bullet block formula plunger passes through seal operation
Cylinder restore normal sealing state when, lower part bullet block formula plunger passes through the seal operation cylinder for having locking again, by two groups of plungers according to
It is secondary by way of locking, to control the leak rate of plunger.By this connection type, the length of plunger is extended to be greater than well
The height of the expanding position of mouth, makes plunger when expanding by well head, plunger is still to leave oil pipe, and oil pipe is relied on to remain residence
In, it can smoothly be reached at well head capture device with plunger.
Claims (8)
1. adapting to the plunger mining device of low yield shale gas well, it is characterised in that: including multiple groups bullet block formula plunger, adjacent sets bullet block
It is connected between formula plunger by support cylinder, the bullet block formula plunger of the top connects fishing head, and the lowermost bullet block formula plunger successively connects
It unloads and carries release apparatus and seeker.
2. plunger mining device according to claim 1, it is characterised in that: the unloading release apparatus includes outer cylinder,
It is successively installed on valve seat, sealed valve stem in outer cylinder, adjusts load spring, adjusting nut, is equipped with centre bore in the sealed valve stem, thereon
End is equipped with valve chamber, valve ball and baffle is equipped in valve chamber, the lower end of sealed valve stem is set with tune and carries spring, and passes through adjusting nut
Its decrement is adjusted, sealed valve stem and valve base sealing is configured, annular space is equipped between sealed valve stem and outer cylinder, is set on outer cylinder
There is the radial hole being connected with annular space, the axial hole being connected with annular space is equipped on adjusting nut.
3. plunger mining device according to claim 2, it is characterised in that: the lower end of the valve chamber is sealing cone, is used
In with valve ball seal arrangement, baffle be equipped with multiple flowing holes.
4. plunger mining device according to claim 2 or 3, it is characterised in that: the valve seat and sealed valve stem pass through cone
Face seal arrangement.
5. plunger mining device according to claim 1 or 2, it is characterised in that: every group of bullet block formula plunger includes in having
The central tube in heart hole and two bullet block formula plungers being at least arranged on central tube, the bullet block formula plunger includes several beckets
Piece, radial righting spring, several metal ring plates enclose ring-type, and the both ends inner wall of each metal ring plate abuts radial righting respectively
Spring, both ends are limited respectively in the annular groove of central tube.
6. plunger mining device according to claim 5, it is characterised in that: the fishing head includes ontology, in ontology
Upper end is equipped with boss, and inside is equipped with the interface channel being connected with central tube centre bore.
7. plunger mining device according to claim 6, it is characterised in that: the interface channel includes being arranged under ontology
The blind hole at end, the sidewise hole being connected with blind hole.
8. plunger mining device according to claim 1 or 2, it is characterised in that: support cylinder is that a both ends are screwed
Pipe, it is internal that test equipment is installed, and it is equipped with production channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821381362.XU CN209129584U (en) | 2018-08-24 | 2018-08-24 | A kind of plunger mining device adapting to low yield shale gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821381362.XU CN209129584U (en) | 2018-08-24 | 2018-08-24 | A kind of plunger mining device adapting to low yield shale gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209129584U true CN209129584U (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821381362.XU Active CN209129584U (en) | 2018-08-24 | 2018-08-24 | A kind of plunger mining device adapting to low yield shale gas well |
Country Status (1)
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|---|---|
| CN (1) | CN209129584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979595A (en) * | 2018-08-24 | 2018-12-11 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of plunger mining device adapting to low yield shale gas well |
-
2018
- 2018-08-24 CN CN201821381362.XU patent/CN209129584U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979595A (en) * | 2018-08-24 | 2018-12-11 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of plunger mining device adapting to low yield shale gas well |
| CN108979595B (en) * | 2018-08-24 | 2024-05-28 | 中国石油化工股份有限公司 | Plunger drainage and production device suitable for low-yield shale gas well |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200106 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE, JIANGHAN OILFIELD BRANCH OF CHINA PETROCHEMICAL CORPORATION Patentee after: China Petrochemical Co., Ltd. Address before: 430035 Hubei city of Wuhan province Gutian two Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee before: PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE, JIANGHAN OILFIELD BRANCH OF CHINA PETROCHEMICAL CORPORATION |