CN206617132U - Blocking device for water drainage and gas production of speed tubular column - Google Patents
Blocking device for water drainage and gas production of speed tubular column Download PDFInfo
- Publication number
- CN206617132U CN206617132U CN201621255833.3U CN201621255833U CN206617132U CN 206617132 U CN206617132 U CN 206617132U CN 201621255833 U CN201621255833 U CN 201621255833U CN 206617132 U CN206617132 U CN 206617132U
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- Prior art keywords
- plug
- tubing string
- gas production
- housing
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 230000000903 blocking effect Effects 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 26
- 238000005086 pumping Methods 0.000 claims description 23
- 210000003739 neck Anatomy 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 44
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 241000521257 Hydrops Species 0.000 description 5
- 206010030113 Oedema Diseases 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model provides a speed tubular column drainage is blocking device for gas production mainly is applied to horizontal well drainage gas production, and the blanking plug adopts slot type design, adopts the roll extrusion formula to be connected between whole and the speed tubular column to it is sealed by the twice sealing washer, and overall structure is sealed firm, and the end cap adopts embedded design, places the blanking plug body in, blanking plug lower part body is equipped with sieve mesh and pocket, and is equipped with from the hasp on the pocket, can pin the end cap of getting off, prevents to move the jam production passageway on it. The problem of when speed tubular column pipe laying operation the conventional blanking plug of horizontal well inclined shaft section scrapes the tubing wall and leads to leaking gas and drop is solved, more importantly adopt this blanking plug can pass downhole tools such as safety joint, hydraulic anchor in the pit shaft with the speed tubular column to make the speed tubular column descend to the gas well horizontal segment, improve horizontal well speed tubular column drainage gas production effect, the device has simple structure, sealed firm, the swift characteristics of installation.
Description
Technical field
The utility model belongs to gas-field exploitation technical field, and in particular to a kind of speed tubing string water pumping gas production is filled with blocking
Put, be particularly suitable for use in hydrops horizontal well speed tubing string water pumping gas production.
Background technology
With continuing for gas well liquid loading time, gas well deliverability is gradually reduced, and natural gas flow velocity takes liquid less than critical in pit shaft
Start hydrops during flow velocity, if taking discharge opeing measure not in time, gas well water logging, stopping production can be made, gas well is had a strong impact on and normally produce.Speed
Degree tubing string drainage gas recovery is to take flow quantity theory, the smaller chi of tripping in gas well crude oil pipe based on pit shaft two phase flow and minimum
Very little coiled tubing makes it be suspended on gas production wellhead for a long time as flow string, and by special hanger, and the technology can be one
Determine the critical of reduction gas well in degree and take gas flow rate in flow velocity, increase pit shaft, so as to improve gas well fluid-carrying capability, exclude well
Bottom hydrops, it is ensured that the steady production of gas well.
Fracturing tool is more in gas field horizontal well for using fracturing integrated pipe column, pit shaft, hole deviation is big, horizontal segment
It is long, cause air water fluidised form in pit shaft complicated, usual foam draining, plunger lift, propose the water pumping gas productions such as production band liquid, compressor gaslift
The measure of technology is efficient very low, and speed tubing string water pumping gas production application effect on straight well is preferable, but because horizontal well hole deviation is big,
The prefabricated conventional blanking plug in speed tubing string bottom easily scrapes tube inner wall and downhole tool during lower speed tubing string operation, causes to block
Device gas leakage even comes off, so as to be forced the speed tubing string in pit shaft, reinstalls blanking plug and starts lowering-in operation, therefore logical
Down tube depth is located at more than safety joint 10~15m during speed tubing string under ordinary water horizontal well, away from horizontal segment vertical range up to 200~
300m, this part pit shaft hydrops can not be excluded, and have impact on water pumping gas production effect and gas well liquid loading.
Utility model content
The purpose of this utility model is that blanking plug, which scrapes tubing wall, to be caused in lower curved section when solving speed tubing string lowering-in operation
Gas leakage and the problem of come off.
Therefore, the utility model provides a kind of speed tubing string water pumping gas production blocking device, include the housing of tubing string shape,
The screwed connection of housing bottom and multiple sieve apertures is offered on guide head, housing, and inner chamber is provided with plug, plug outer wall and housing
Connected between wall by pin, the outer wall of plug offers two necks, and two necks are symmetrical on the longitudinal center line of plug；
The top of guide head is provided with pocket, and upwards, bottom surface is contacted pocket openings with guide head top end face, and pocket, which is fixed on, leads
To on head inwall, and the side of pocket is provided with when dropping down onto under two relative self-fastening buttons, plug in pocket, self-fastening button and neck
Clamping, plug is locked in pocket.
The housing is made up of top half and the latter half screwed connection.
Outer wall, the plug outer wall of the casing upper half point, offer in annular groove, annular groove and are arranged with O
Type sealing ring.
Three roads gradually deep formula groove is offered in the external wall of upper portion of the housing.
The pocket is identical with the shape of plug.
The sieve aperture is opened in the latter half of housing.
The beneficial effects of the utility model：This speed tubing string water pumping gas production blocking device that the utility model is provided,
Using trough design, rolling-type connection is used between entirety and speed tubing string, and is sealed by two seals circle, overall structure is close
Secure and lean on, plug uses embedded design, is built in blanking plug body, blanking plug lower body is provided with sieve aperture and pocket, and
Pocket is provided with self-fastening button, can pin the plug for hitting down, and prevents it from moving up blocking production passage.Solve speed tubing string
The problem of tubing wall causes gas leakage and come off is scraped in the conventional blanking plug of lower curved section, it is often more important that blocked up using this during lowering-in operation
Filling in device can be by speed tubing string through downhole tools such as safety joint, the hydraulic anchors in pit shaft, so as to gas under speed tubing string
Well horizontal segment, well speed tubing string water pumping gas production effect of improving the standard, device has simple in construction, sealing firm, quick for installation
The characteristics of.
The utility model is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is to destroy the plug structure schematic diagram before plug.
Fig. 2 is the plug structure schematic diagram destroyed after plug.
Description of reference numerals：1st, housing；2nd, guide head；3rd, plug；4th, pin；5th, neck；6th, pocket；7th, self-fastening button；8、
Sieve aperture；9th, O-ring seal；10th, groove.
Embodiment
Embodiment 1：
In order to solve during speed tubing string lowering-in operation in lower curved section, blanking plug, which scrapes tubing wall, causes gas leakage and asking of coming off
Topic, present embodiments provides a kind of speed tubing string water pumping gas production blocking device as depicted in figs. 1 and 2, including tubing string shape
Housing 1, the bottom screwed connection of housing 1 and multiple sieve apertures 8 is offered on guide head 2, housing 1, and inner chamber is provided with plug 3, plug 3
Connected between outer wall and the inwall of housing 1 by pin 4, the outer wall of plug 3 offers two necks 5, and two necks 5 are on plug
3 longitudinal center line is symmetrical；
As shown in figure 1, the top of guide head 2 is provided with pocket 6, the opening upwards of pocket 6, bottom surface connects with the top end face of guide head 2
Touch, pocket 6 is fixed on the inwall of guide head 2, and the side of pocket 6 is provided with two relative self-fastening buttons 7, plug 3 and dropped down onto
When in pocket 6, self-fastening button 7 and the clamping of neck 5 are locked in pocket 6 by plug 3.
The water pumping gas production of speed tubing string is with the course of work of blocking device：
Blanking plug is assembled first, plug 3 is connected to by housing 1 by pin 4, and being directed to first 2 by screw thread is connected to shell
The bottom of body 1；Then the top of blanking plug is connected to the lower end of speed tubing string, using coiled tubing work vehicle by speed
To Wellbore of Gas Wells desired depth under tubing string, using nitrogen supercharging vehicle, to speed tubing string inside pump high pressure nitrogen, nitrogen enters stifled
Fill in device, the pressure differential formed using plug about 3 cuts pin 4, and plug 3 is hit down to pocket 6, as shown in Figure 2.When stifled
First 3 when moving down, and the self-fastening button 7 of the left and right sides of pocket 6 can be promoted to retract, when running into the neck 5 on plug 3, self-fastening button 7 is ejected
To original position, so that plug 3 is locked in pocket 6, plug 3 is blown back original position and blocked again by shaft bottom high pressure draught when preventing from driving a well
Speed tubing string.
It should be noted that the sieve aperture 8 opened up on housing 1 can ensure that gas-liquid smoothly circulates, be not in sand plug again.
The blanking plug that the present embodiment is provided, plug uses embedded design, is built in blanking plug body, blanking plug is provided with
Sieve aperture and pocket, and pocket is provided with self-locking ports, can pin the plug for hitting down, and prevents it from moving up blocking production passage.
The problem of tubing wall causes gas leakage and come off is scraped in the conventional blanking plug of lower curved section when solving speed tubing string lowering-in operation, it is heavier
What is wanted is to use the device can be by speed tubing string through downhole tools such as safety joint, the hydraulic anchors in pit shaft, so that fast
Spend under tubing string to gas well horizontal segment, well speed tubing string water pumping gas production effect of improving the standard, the device has simple in construction, sealing jail
Gu, it is quick for installation the characteristics of.
Embodiment 2：
On the basis of embodiment 1, installed for ease of machining and each part, the housing 1 is by top half with
Half part is made up of screwed connection.
Embodiment 3：
On the basis of embodiment 1, as depicted in figs. 1 and 2, in order to avoid the generation of blanking plug gas leak phenomenon, it is ensured that its
Sealing, outer wall, the outer wall of plug 3 of the top half of housing 1, offers in annular groove, annular groove and is arranged with O
Type sealing ring 9.
Three roads gradually deep formula groove 10 is offered in the external wall of upper portion of the housing 1.After blanking plug overall package is finished, pass through
Rolling tools roll speed tubing string to three roads gradually deep formula groove 10 successively.The trough design that blanking plug top is used, it is overall
Rolling-type connection is used between speed tubing string, it can be ensured that firm and reliable connection between blanking plug and speed tubing string.
Embodiment 4：
On the basis of embodiment 1, the pocket 6 is identical with the shape of plug 3, and size matches with the size of plug 3, can
During ensuring that plug 3 is hit down to pocket 6, plug 3 is fitted completely with pocket 6.
The sieve aperture 8 is opened in the latter half of housing 1.Sieve aperture 8 can ensure that gas-liquid smoothly circulates, and be not in sand again
It is stifled, it is contemplated that Action of Gravity Field makes gas-liquid descending, therefore sieve aperture 8 is opened in the latter half of housing 1.
Embodiment 5：
A kind of application of speed tubing string water pumping gas production blocking device is present embodiments provided, the blanking plug passes through three roads
Gradually deep formula groove 10 is rolled installed in the lower end of speed tubing string, using coiled tubing work vehicle by speed tubing string and under it
To gas well horizontal segment desired depth under the blanking plug at end, the plug 3 of blanking plug is destroyed by ground nitrogen supercharging vehicle, speed is utilized
Tubing string carries out water pumping gas production production as production passage.
Because horizontal well hole deviation is big, the preset conventional blanking plug in speed tubing string bottom, which is easily scraped, during lower speed tubing string operation polishes
Inside pipe wall and downhole tool, cause blanking plug gas leakage or even come off, so as to be forced the speed tubing string in pit shaft, reinstall
Blanking plug simultaneously starts lowering-in operation, therefore down tube depth is located at the safety joint above 10-15m during generally horizontal underground speed tubing string,
200-300m is reached away from horizontal segment vertical range, this part pit shaft hydrops can not be excluded, have impact on water pumping gas production effect and gas well life
Production.
And the speed tubing string water pumping gas production that the present embodiment is provided is primarily adapted for use in horizontal well speed tubing string row with blocking device
Hydromining gas, scraping tubing wall in the conventional blanking plug of lower curved section when solving speed tubing string lowering-in operation causes gas leakage and asking of coming off
Topic, it is often more important that the downhole tools such as safety joint, the hydraulic anchor in pit shaft can be passed through speed tubing string using the device, from
And make under speed tubing string to gas well horizontal segment, well speed tubing string water pumping gas production effect of improving the standard, the device have it is simple in construction,
The characteristics of sealing is firm, quick for installation.
Exemplified as above is only for example, not constituting to protection domain of the present utility model to of the present utility model
Limitation, it is every to be belonged to the same or analogous design of the utility model within protection domain of the present utility model.The present embodiment
The part and structure not described in detail belong to the well-known components and common structure or conventional means of the industry, do not chat one by one here
State.
Claims (6)
1. a kind of speed tubing string water pumping gas production blocking device, includes the housing of tubing string shape（1）, it is characterised in that：Housing（1）Most
Guide head in lower end screwed connection（2）, housing（1）On offer multiple sieve apertures（8）, inner chamber is provided with plug（3）, plug（3）Outside
Wall and housing（1）Pass through pin between inwall（4）Connection, plug（3）Outer wall offer two necks（5）, two necks（5）
On plug（3）Longitudinal center line it is symmetrical；
Guide head（2）Top be provided with pocket（6）, pocket（6）Opening upwards, bottom surface and guide head（2）Top end face is contacted, pocket
（6）It is fixed on guide head（2）On inwall, and pocket（6）Side two relative self-fastening buttons are installed（7）, plug（3）Fall
To pocket（6）When interior, self-fastening button（7）With neck（5）Clamping, by plug（3）It is locked in pocket（6）It is interior.
2. speed tubing string water pumping gas production blocking device as claimed in claim 1, it is characterised in that：The housing（1）By upper
Half part and the latter half are made up of screwed connection.
3. speed tubing string water pumping gas production blocking device as claimed in claim 2, it is characterised in that：The housing（1）Upper half
Partial outer wall, plug（3）Outer wall, offers in annular groove, annular groove and is arranged with O-ring seal（9）.
4. speed tubing string water pumping gas production blocking device as claimed in claim 1, it is characterised in that：The housing（1）It is upper
Three roads gradually deep formula groove is offered on portion's outer wall（10）.
5. speed tubing string water pumping gas production blocking device as claimed in claim 1, it is characterised in that：The pocket（6）With blocking up
Head（3）Shape it is identical.
6. speed tubing string water pumping gas production blocking device as claimed in claim 2, it is characterised in that：The sieve aperture（8）Open up
In housing（1）The latter half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621255833.3U CN206617132U (en) | 2016-11-23 | 2016-11-23 | Blocking device for water drainage and gas production of speed tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621255833.3U CN206617132U (en) | 2016-11-23 | 2016-11-23 | Blocking device for water drainage and gas production of speed tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206617132U true CN206617132U (en) | 2017-11-07 |
Family
ID=60228971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621255833.3U Active CN206617132U (en) | 2016-11-23 | 2016-11-23 | Blocking device for water drainage and gas production of speed tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206617132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677735A (en) * | 2016-11-23 | 2017-05-17 | 中国石油天然气股份有限公司 | Blocking device for horizontal well speed pipe column water drainage gas production |
-
2016
- 2016-11-23 CN CN201621255833.3U patent/CN206617132U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677735A (en) * | 2016-11-23 | 2017-05-17 | 中国石油天然气股份有限公司 | Blocking device for horizontal well speed pipe column water drainage gas production |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |