CN106677735A - Blocking device for horizontal well speed pipe column water drainage gas production - Google Patents
Blocking device for horizontal well speed pipe column water drainage gas production Download PDFInfo
- Publication number
- CN106677735A CN106677735A CN201611034513.XA CN201611034513A CN106677735A CN 106677735 A CN106677735 A CN 106677735A CN 201611034513 A CN201611034513 A CN 201611034513A CN 106677735 A CN106677735 A CN 106677735A
- Authority
- CN
- China
- Prior art keywords
- plug
- tubing string
- gas production
- horizontal well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 230000000903 blocking effect Effects 0.000 title claims description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 56
- 238000005086 pumping Methods 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 235000020681 well water Nutrition 0.000 abstract description 2
- 239000002349 well water Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 7
- 241000521257 Hydrops Species 0.000 description 5
- 206010030113 Oedema Diseases 0.000 description 5
- 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
- 238000007790 scraping Methods 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
- 238000001727 in vivo Methods 0.000 description 1
- 238000011065 in-situ storage Methods 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
- 230000005514 two-phase flow Effects 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a plugging device for horizontal well speed pipe column water drainage gas production, which is mainly applied to horizontal well water drainage gas production, wherein a plug is designed in a groove mode, the whole body is connected with a speed pipe column in a rolling mode and is sealed by two sealing rings, the whole structure is sealed firmly, a plug is designed in an embedded mode and is arranged in a plug body, a sieve hole and a pocket are formed in the body at the lower part of the plug, and a self-locking buckle is arranged on the pocket and can lock the dropped plug to prevent the dropped plug from moving upwards to block a production channel. 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 invention belongs to gas-field exploitation technical field, and in particular to a kind of horizontal well speed tubing string water pumping gas production blocking dress
Put, be particularly suited for 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 lowered, 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 can be made, stopped production, have a strong impact on gas well and normally produce.Speed
Degree tubing string drainage gas recovery is that to take flow quantity based on pit shaft two phase flow and minimum theoretical, in gas well crude oil pipe under enter less chi
Very little coiled tubing makes it be suspended on gas production wellhead for a long time as flow string by special hanger, and the technology can be one
Determine the critical of reduction gas well in degree and take flow velocity, gas flow rate in increase pit shaft, so as to improve gas well fluid-carrying capability, excludes well
Bottom hydrops, it is ensured that the steady production of gas well.
For the gas field horizontal well using fracturing integrated pipe column, fracturing tool is more in 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 product band liquid, compressor gaslift
The measure effective percentage of technology is very low, and speed tubing string water pumping gas production application effect on straight well is preferable, but due to horizontal well hole deviation greatly,
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 blocking
Device gas leakage even comes off, and 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 dimension up to 200~
300m, this part pit shaft hydrops cannot be excluded, and have impact on water pumping gas production effect and gas well liquid loading.
The content of the invention
Present invention aim to address in lower curved section during speed tubing string lowering-in operation, blanking plug scrapes tubing wall causes gas leakage
With the problem for coming off.
For this purpose, the invention provides a kind of horizontal well speed tubing string water pumping gas production blocking device, including the shell of tubing string shape
Guide head in body, housing bottom screwed connection, and multiple sieve apertures are offered on housing, and inner chamber is provided with plug, plug outer wall and shell
Connected by pin between wall in vivo, the outer wall of plug offers two draw-in grooves, longitudinal center line of two draw-in grooves with regard to plug
Symmetrically；
Pocket is provided with above guide head, upwards, bottom surface contacts pocket openings with guide head top end face, and pocket is fixed on guide head
On inwall, and the side of pocket is provided with two relative self-fastening buttons, when dropping down onto in pocket under plug, self-fastening button and draw-in groove card
Connect, plug is locked in pocket.
The housing is consisted of top half and the latter half screwed connection.
Outer wall, the plug outer wall of the casing upper half point, offers in annular groove, annular groove and is 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.
A kind of application of horizontal well speed tubing string water pumping gas production blocking device, the blanking plug passes through three roads gradually deep formula ditch
Trough roller pressure installed in the lower end of speed tubing string, using coiled tubing work vehicle by speed tubing string and the blanking plug installed in its lower end
Down to gas well horizontal segment desired depth, the plug of blanking plug is destroyed by ground nitrogen supercharging vehicle, by the use of speed tubing string as life
Passage is produced, water pumping gas production production is carried out.
Beneficial effects of the present invention：This horizontal well speed tubing string water pumping gas production blocking device that the present invention is provided, adopts
With trough design, rolling-type connection is adopted between entirety and speed tubing string, and sealed by two seals circle, overall structure sealing
Firm, plug adopts embedded design, and in being built in blanking plug body, blanking plug lower body is provided with sieve aperture and pocket, and mouth
Bag is provided with self-fastening button, can pin the plug for hitting down, and prevents from moving blocking production passage thereon.Under solving speed tubing string
The problem that tubing wall causes gas leakage and comes off is scraped during pipe operation in lower curved section routine blanking plug, it is often more important that using the blocking
Device can be by speed tubing string through downhole tools such as safety joint, the hydraulic anchors in pit shaft, so that speed tubing string is down to gas well
Horizontal segment, well speed tubing string water pumping gas production effect of improving the standard, device has simple structure, seals firm, quick for installation
Feature.
The present invention is described in further details below with reference to accompanying drawing.
Description of the drawings
Fig. 1 be to destroy plug before plug structure schematic diagram.
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, draw-in groove；6th, pocket；7th, self-fastening button；8、
Sieve aperture；9th, O-ring seal；10th, groove.
Specific embodiment
Embodiment 1：
In order to solve in lower curved section during speed tubing string lowering-in operation, blanking plug scrapes tubing wall causes gas leakage and the problem for coming off,
Present embodiments provide a kind of horizontal well 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 guide head 2, multiple sieve apertures 8 offered on housing 1, and inner chamber is provided with plug 3, blocks up
Connected by pin 4 between 3 outer walls and the inwall of housing 1, the outer wall of plug 3 offers two draw-in grooves 5, two draw-in grooves 5 with regard to
The longitudinal center line of plug 3 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 contacts with the top end face of guide head 2, mouth
Bag 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, and pocket 6 is dropped down onto under plug 3
When interior, self-fastening button 7 and the clamping of draw-in groove 5 are locked in pocket 6 by plug 3.
The course of work of horizontal well speed tubing string water pumping gas production blocking device is：
Blanking plug is assembled first, plug 3 is connected to by housing 1 by pin 4, be directed to 2 by screw thread and be connected to housing 1
Bottom；Then the top of blanking plug is connected to the lower end of speed tubing string, using coiled tubing work vehicle by speed tubing string
Down to Wellbore of Gas Wells desired depth, using nitrogen supercharging vehicle, high pressure nitrogen is pumped to the inside of speed tubing string, nitrogen enters blanking plug
Interior, the pressure differential formed about 3 using plug cuts off pin 4, and plug 3 is hit down to pocket 6, as shown in Figure 2.When plug 3
When moving down, the self-fastening button 7 that can promote the left and right sides of pocket 6 is retracted, when the draw-in groove 5 on plug 3 is run into, self-fastening button 7 eject to
Original position, so as to plug 3 is locked in pocket 6, plug 3 is blown back and in situ blocks speed again by shaft bottom high pressure draught when preventing from driving a well
Degree 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 again sand plug.
The blanking plug that the present embodiment is provided, plug adopts embedded design, and in being 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 from moving blocking production passage thereon.
Scraping tubing wall in lower curved section routine blanking plug when solving the problems, such as speed tubing string lowering-in operation causes gas leakage and comes off, heavier
Want be can be by speed tubing string through downhole tools such as safety joint, the hydraulic anchors in pit shaft, so that fast using the device
Down to gas well horizontal segment, well speed tubing string water pumping gas production effect of improving the standard, the device has simple structure, sealing jail to degree tubing string
Gu, it is quick for installation the characteristics of.
Embodiment 2：
On the basis of embodiment 1, install for ease of machining and each part, the housing 1 is by top half and lower half
Divide and constituted by 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
Property, the outer wall of the top half of the housing 1, the outer wall of plug 3 offer annular groove, are arranged with annular groove O-shaped close
Seal 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 successively roll speed tubing string to three roads gradually deep formula groove 10.The trough design that blanking plug top adopts, it is overall
Rolling-type connection is adopted 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 be true
When guarantor's 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 again sand
It is stifled, it is contemplated that action of gravity makes gas-liquid descending, therefore sieve aperture 8 is opened in into the latter half of housing 1.
Embodiment 5：
A kind of application of horizontal well speed tubing string water pumping gas production blocking device is present embodiments provided, the blanking plug passes through three
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 installed in it in road
The blanking plug of lower end destroys the plug 3 of blanking plug, using speed down to gas well horizontal segment desired depth by ground nitrogen supercharging vehicle
Degree 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 is easily scraped and polished during lower speed tubing string operation
Inside pipe wall and downhole tool, cause blanking plug gas leakage or even come off, and 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 down-hole speed tubing string,
200-300m is reached away from horizontal segment vertical dimension, this part pit shaft hydrops cannot be excluded, have impact on water pumping gas production effect and gas well life
Produce.
And the horizontal well speed tubing string water pumping gas production blocking device that the present embodiment is provided is primarily adapted for use in horizontal well speed
Tubing string water pumping gas production, scraping tubing wall in lower curved section routine blanking plug when solving speed tubing string lowering-in operation causes gas leakage and comes off
Problem, it is often more important that can be by speed tubing string through down-hole works such as safety joint, the hydraulic anchors in pit shaft using the device
Tool, so that speed tubing string is down to gas well horizontal segment, well speed tubing string water pumping gas production effect of improving the standard, the device has structure
Simply, the characteristics of sealing firm, quick for installation.
Exemplified as above is only the illustration to the present invention, does not constitute the restriction to protection scope of the present invention, all
It is that design same or analogous with the present invention is belonged within protection scope of the present invention.Portion of the present embodiment without detailed narration
Part and structure belong to the well-known components and common structure or conventional means of the industry, do not describe one by one here.
Claims (7)
1. a kind of horizontal well speed tubing string water pumping gas production blocking device, including the housing of tubing string shape（1）, it is characterised in that：Shell
Body（1）Guide head in bottom screwed connection（2）, housing（1）On offer multiple sieve apertures（8）, inner chamber is provided with plug（3）, block up
Head（3）Outer wall and housing（1）Pass through pin between inwall（4）Connection, plug（3）Outer wall offer two draw-in grooves（5）, two
Draw-in groove（5）With regard to 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 draw-in groove（5）Clamping, by plug（3）It is locked in pocket（6）It is interior.
2. horizontal well speed tubing string water pumping gas production blocking device as claimed in claim 1, it is characterised in that：The housing
（1）It is made up of by screwed connection top half and the latter half.
3. horizontal well speed tubing string water pumping gas production blocking device as claimed in claim 2, it is characterised in that：The housing
（1）The outer wall of top half, plug（3）Outer wall, offers in annular groove, annular groove and is arranged with O-ring seal
（9）.
4. horizontal well speed tubing string water pumping gas production blocking device as claimed in claim 1, it is characterised in that：The housing
（1）External wall of upper portion on offer three roads gradually deep formula groove（10）.
5. horizontal well speed tubing string water pumping gas production blocking device as claimed in claim 1, it is characterised in that：The pocket
（6）With plug（3）Shape it is identical.
6. horizontal well speed tubing string water pumping gas production blocking device as claimed in claim 2, it is characterised in that：The sieve aperture
（8）It is opened in housing（1）The latter half.
7. a kind of application of horizontal well speed tubing string water pumping gas production blocking device, it is characterised in that：The blanking plug passes through three
Road gradually deep formula groove（10）Rolling is arranged on the lower end of speed tubing string, using coiled tubing work vehicle is by speed tubing string and is arranged on
The blanking plug of its lower end destroys the plug of blanking plug down to gas well horizontal segment desired depth by ground nitrogen supercharging vehicle（3）, profit
With speed tubing string as production passage, water pumping gas production production is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611034513.XA CN106677735A (en) | 2016-11-23 | 2016-11-23 | Blocking device for horizontal well speed pipe column water drainage gas production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611034513.XA CN106677735A (en) | 2016-11-23 | 2016-11-23 | Blocking device for horizontal well speed pipe column water drainage gas production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106677735A true CN106677735A (en) | 2017-05-17 |
Family
ID=58867584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611034513.XA Pending CN106677735A (en) | 2016-11-23 | 2016-11-23 | Blocking device for horizontal well speed pipe column water drainage gas production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106677735A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620583A (en) * | 2017-08-29 | 2018-01-23 | 中国海洋石油总公司 | A kind of liquid discharging gas producing tubing string and its production method |
| CN109267972A (en) * | 2018-10-30 | 2019-01-25 | 中国石油天然气股份有限公司 | Two-stage plugging device for velocity string and using method |
| CN109296336A (en) * | 2018-09-20 | 2019-02-01 | 中国石油天然气股份有限公司 | Sliding sleeve type blocking device and method for speed pipe column |
| CN109403908A (en) * | 2018-11-06 | 2019-03-01 | 中国石油天然气股份有限公司 | Sand prevention type blocking tool for speed pipe column and using method |
| WO2019047870A1 (en) * | 2017-09-06 | 2019-03-14 | 刘书豪 | Fluid separation device, well structure and method for producing petroleum or natural gas |
| CN110952949A (en) * | 2019-11-22 | 2020-04-03 | 中国石油天然气股份有限公司 | Soluble plugging tool for tail end of velocity string and using method thereof |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
| CN116971749A (en) * | 2023-09-23 | 2023-10-31 | 西南石油大学 | Underground ground integrated liquid drainage system and method |
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| CN105804686A (en) * | 2016-05-11 | 2016-07-27 | 中国石油化工股份有限公司 | Pipe string full-bore blocking device and manufacturing method of blocking body of pipe string full-bore blocking device |
| CN206617132U (en) * | 2016-11-23 | 2017-11-07 | 中国石油天然气股份有限公司 | Blocking device for water drainage and gas production of speed tubular column |
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| US20040206513A1 (en) * | 2003-04-16 | 2004-10-21 | Baker Hughes Incorporated | Sand control for blanking plug |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620583A (en) * | 2017-08-29 | 2018-01-23 | 中国海洋石油总公司 | A kind of liquid discharging gas producing tubing string and its production method |
| WO2019047870A1 (en) * | 2017-09-06 | 2019-03-14 | 刘书豪 | Fluid separation device, well structure and method for producing petroleum or natural gas |
| US11346199B2 (en) | 2017-09-06 | 2022-05-31 | Chengdu Bison Technology Co., Ltd. | Fluid separating device |
| CN109296336A (en) * | 2018-09-20 | 2019-02-01 | 中国石油天然气股份有限公司 | Sliding sleeve type blocking device and method for speed pipe column |
| CN109296336B (en) * | 2018-09-20 | 2023-11-28 | 中国石油天然气股份有限公司 | Sliding sleeve type blocking device and method for speed pipe column |
| CN109267972A (en) * | 2018-10-30 | 2019-01-25 | 中国石油天然气股份有限公司 | Two-stage plugging device for velocity string and using method |
| CN109403908A (en) * | 2018-11-06 | 2019-03-01 | 中国石油天然气股份有限公司 | Sand prevention type blocking tool for speed pipe column and using method |
| CN110952949A (en) * | 2019-11-22 | 2020-04-03 | 中国石油天然气股份有限公司 | Soluble plugging tool for tail end of velocity string and using method thereof |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
| CN111720086B (en) * | 2020-07-08 | 2024-01-19 | 中国石油天然气集团有限公司 | Impact type pipe end blanking plug and use method thereof |
| CN116971749A (en) * | 2023-09-23 | 2023-10-31 | 西南石油大学 | Underground ground integrated liquid drainage system and method |
| CN116971749B (en) * | 2023-09-23 | 2024-02-09 | 西南石油大学 | Underground ground integrated liquid drainage system and method |
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Application publication date: 20170517 |