CN209354073U - A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection - Google Patents
A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection Download PDFInfo
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- CN209354073U CN209354073U CN201821727698.7U CN201821727698U CN209354073U CN 209354073 U CN209354073 U CN 209354073U CN 201821727698 U CN201821727698 U CN 201821727698U CN 209354073 U CN209354073 U CN 209354073U
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- pipe
- reducer union
- union body
- layer structure
- diameter double
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- 239000007787 solid Substances 0.000 title claims abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 53
- 238000003825 pressing Methods 0.000 claims abstract description 25
- 239000007937 lozenge Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 77
- 238000000034 method Methods 0.000 description 10
- 150000004677 hydrates Chemical class 0.000 description 8
- 239000013535 sea water Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000013000 chemical inhibitor Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection, the device connects and converts with runner for being hydrated underground minor diameter double layer continuous pipe and major diameter double-layer structure tool pipe series winding in Logistics exploitation, wherein, minor diameter double layer continuous pipe outer tube is light pipe, six valve type slips, which are squeezed, by pressing sleeve is engaged outer tube connection, pressing sleeve is threadingly attached on reducer union body, and major diameter double-layer structure pipe string outer tube is connect by screw thread with reducer union body；There are two runner inside reducer union body, external flow passage connects the exocoel of minor diameter double layer continuous pipe and major diameter double-layer structure pipe string, and the inner cavity that runner connects minor diameter double layer continuous pipe and major diameter double-layer structure pipe string is inscribed；The external uniform flow passage of variable diameter is divided into four annular fiowpaths, and section is raised type curved surface.The double-layer structure pipe series winding that the utility model realizes different-diameter connects；Area of passage at variable diameter is increased, joint pressure drop and vibration are reduced；Improve the pull resistance of light pipe connection.
Description
Technical field
The utility model relates to arrive exploitation of gas hydrates technical field more particularly to a kind of hydrate solid state fluidizing
Exploit variable diameter bilayer pipe connection.
Technical background
Gas hydrates are the cleaning found in the world, high-quality, efficient new energy, are the research of oil and gas industry
Indispensable valuable cargo in hot spot, and following energy strategy.The global reserves of gas hydrates are huge, but mesh
Preceding exploitation is not yet mature, and especially in terms of ocean, traditional recovery method has voltage drop method, heat injection method, chemical inhibitor method and CO2
Replacement exploitation method etc., these methods have only carried out Short-Term Producing technology to polar region sandstone and sea area sandstone reservoir gas hydrates
Demonstration verifying, safety can not be completely secured.Therefore the gas water for being stored in deep water shallow-layer within 300 meters of submarine surface
The exploitation for closing object then needs to consider a kind of completely new exploitation pattern.Zhou Shouwei etc. is according to the sampling of world sea area hydrate and China sea
Domain hydrate samples situation, proposes deep water shallow layer gas hydrate solid state fluidizing production technique, reduces shallow-layer hydrate point
Possible environmental risk is solved, achievees the purpose that green is controllably exploited.
In the exploitation of sea-bottom shallow hydrate solid state fluidizing, the single layer of conventional gas and oil exploitation need to be replaced using double layer continuous pipe
Pipe, to achieve the effect that the downward conveying high-pressure seawater of outer tube and inner tube are delivered up gas hydrates.Hydrate creeps into and adopts
It is that hydrate downhole tool pipe string is connected by platform to shaft bottom by double layer continuous pipe during pick.And existing double layer continuous pipe
Dimensions is all smaller compared to the dimensions of hydrate downhole tool pipe string.Therefore, in solid state fluidizing exploitation, in order to guarantee
Double layer continuous pipe operation need to realize the reliable and stable connection of minor diameter double layer continuous pipe Yu major diameter double-layer structure pipe string.Meanwhile
The inner and outer pipes of minor diameter double layer continuous pipe are light pipe, and what existing continuous pipe connector can not directly meet double layer continuous pipe can
By connection, and in operation process, double layer continuous pipe needs dilatory major diameter double-layer structure pipe string time to drag operation, thus needs
Guarantee there is very high stability and tensile strength at attachment device.Therefore, in order to realize the deep water shallow-layer based on the double-deck Manifold technology
The exploitation of gas hydrates solid state fluidizing, needs a kind of double layer continuous pipe connection of variable diameter of utility model, with guarantee can be with
Minor diameter double layer continuous pipe and major diameter double-layer structure pipe string are reliably connected, increased outside double layer continuous pipe and double-layer structure pipe string
Channel latus rectum enhances stabilization and tensile strength at double layer continuous pipe light pipe, and reduces high pressure sea water injection and pass through jointing
Pressure drop and vibration caused by place.
Utility model content
In view of the problems of the existing technology, the purpose of the utility model is to provide one kind to be used for gas hydrates solid-state
The attachment device of variable diameter double layer continuous pipe, solves major diameter double-layer structure pipe string and minor diameter double layer continuous pipe when fluidisation exploitation
Between variable diameter connect problem, solve the light pipe connectivity problem of attachment device Yu minor diameter double layer continuous pipe, reduce high pressure
Pressure drop and vibration problem caused by liquid deflecting is flowed.
To achieve the above object, the technical solution of the utility model is as follows: variable diameter double layer continuous pipe connection includes becoming
Drive connector body, six valve type slips and slips pressing sleeve are mounted on lower end and the major diameter double-layer structure of minor diameter double layer continuous pipe
The upper end of pipe string, wherein the upper end of reducer union body is connected through a screw thread with slips pressing sleeve, double with minor diameter inside slips pressing sleeve
Six valve type slips are equipped between the continuous pipe of layer, to be used to connect reducer union body and light pipe；Reducer union body is also double-deck with major diameter
The outer tube of structural tube string is connected by taper thread, is connect with inner tube by regular screw threads；Cavity there are two inside reducer union body,
Internal cavity connects the inner cavity of major diameter double-layer structure pipe string and minor diameter double layer continuous pipe, and is equipped with O-ring seal, for small
Outside the sealing of diameter double layer continuous oil pipe inner tube, external cavity connection minor diameter double layer continuous pipe and major diameter double-layer structure pipe string
Portion channel, wherein the cavity cross-section is raised type smooth surface.
The utility model has the advantage that
(1) variable diameter connection can be achieved, connect the double layer continuous pipe of different-diameter；(2) variable diameter cavity cross-section is that raised type is bent
Face, intermediate space is larger, can reduce vibration in the conveying deflecting of high pressure sea water；(3) six valve type slips cooperate connector occlusion
On light pipe, tensile strength is big, and stability is high；(4) major diameter double-layer structure pipe string connect with the taper thread of reducer union body and subtracts
It is loosened caused by when small operational vibration.
Detailed description of the invention
Fig. 1 is the cross-sectional view that major diameter double-layer structure pipe string is connect with minor diameter double layer continuous pipe；
Fig. 2 is the overall schematic that major diameter double-layer structure pipe string is connect with minor diameter double layer continuous pipe；
Fig. 3 is the structure chart of reducer union body；
Fig. 4 is the vertical view shaft side figure of reducer union body；
Fig. 5 is the variable diameter runner enlarged drawing of reducer union body；
Fig. 6 is slips pressing sleeve cross-sectional view；
Fig. 7 is six valve type slips shaft side figures.
Description of symbols:
Minor diameter double layer continuous pipe inner tube (1)；Minor diameter double layer continuous pipe outer tube (2)；Slips pressing sleeve (3)；Six valve type cards
Watt (4)；Reducer union body (5)；Gasket (6)；O-ring seal (7)；Major diameter double-layer structure pipe string outer tube (8)；Major diameter is double-deck
Structural tube string inner tube (9)；Wiper block (10)；Lozenges (301) inside slips pressing sleeve；Limited step inside slips pressing sleeve
(302)；Six valve type slips teeth (401)；The outer lozenges (402) of slips；Outside reducer union body medium-small diameter double layer continuous pipe
The limited step (501) of pipe；The limited step (502) of pressing sleeve on reducer union body；The entrance of outer chamber in reducer union body
(503)；The limited step (504) of major diameter double-layer structure pipe string outer tube on reducer union body；Major diameter is double on reducer union body
The limited step (505) of layer structural tube string inner tube；Variable diameter cavity 506；Inner cavity (507) in reducer union body；Reducer union body
The limited step (508) of medium-small diameter double layer continuous pipe inner tube.
Specific embodiment
As shown in figs 1 to 6, a kind of hydrate solid state fluidizing exploits variable diameter bilayer pipe connection, including reducer union body
(5), six valve type slips (4) and slips pressing sleeve (3), wherein reducer union body (5) is mounted on major diameter double-layer structure pipe string
Upper end is connect using taper thread with major diameter double-layer structure pipe string outer tube (8), is adopted with major diameter double-layer structure pipe string inner tube (9)
It is connected with regular screw threads；Slips pressing sleeve (3) is mounted on the upper end of reducer union body (5) by regular screw threads connection；Minor diameter is double
The continuous pipe of layer is mounted on the upper end of reducer union body, and minor diameter double layer continuous pipe inner tube (1) is inserted into the inner cavity of fitting body, slips pressure
It covers and holds connection tightly by six valve type slips (4) wedge inlet pipe walls inside (3)；In the junction of each structure and reducer union body (5)
It is equipped with O-ring seal (7).
Reducer union body (5) is mounted on the lower end of minor diameter double layer continuous pipe, connect with slips pressing sleeve (3) regular screw threads,
It is connected and fixed between slips pressing sleeve (3) and minor diameter double layer continuous pipe outer tube (2) using six valve type slips (4), slips pressure when installation
(3) and reducer union body (5) are covered by screwfeed, and there are gasket (6) between the two, and six valve type slips (4) are in slips pressing sleeve
(3) outer lozenges (402) upper end of inside, slips is gradually fitted on the lozenges inside slips pressing sleeve (301), is passed through
Wedge inlet pipe wall holds minor diameter double layer continuous pipe outer tube (2) tightly, and (4) six valve type slips tooth (401) of six valve type slips is engaged in small
On the continuous pipe outer tube (2) of diameter bilayer；The internal change in the end face and reducer union body (5) of minor diameter double layer continuous pipe outer tube (2)
The limited step (501) of drive connector body medium-small diameter double layer continuous pipe outer tube contacts, for limiting outside minor diameter double layer continuous pipe
Pipe (2) protrudes into the length of reducer union body (5)；Reducer union body (5) is mounted on the upper end of major diameter double-layer structure pipe string, and big
Diameter bilayer structural tube string outer tube (8) is connected by taper thread, passes through regular screw threads with major diameter double-layer structure pipe string inner tube (9)
Major diameter is double on the reducer union body of connection, the end face of major diameter double-layer structure pipe string outer tube (8) and reducer union body (5) outside
Limited step (504) contact of layer structural tube string outer tube, for limiting the major diameter double-layer structure of major diameter double-layer structure pipe string
Pipe string outer tube (8) accesses the length of reducer union body (5), the major diameter double-layer structure pipe string inner tube of major diameter double-layer structure pipe string
(9) end face and the limited step (505) of major diameter double-layer structure pipe string inner tube on the reducer union body of reducer union body (5) connect
Touching, for limiting the length of major diameter double-layer structure pipe string inner tube (9) access reducer union body (5)；In reducer union body (5)
Internal there are two channels, one of them is variable diameter cavity (506), connects minor diameter double layer continuous pipe and major diameter double-layer structure pipe
The external channel of string, another is the inner cavity (507) in reducer union body, the inner cavity of double layer continuous pipe is connected, in reducer union
Body (5) and minor diameter double layer continuous pipe outer tube (2), minor diameter double layer continuous pipe inner tube (1), major diameter double-layer structure pipe string outer tube
(8), the junction of major diameter double-layer structure pipe string inner tube (9) and lower tool is equipped with O-ring seal (7), plays sealing and makees
With.
Using the above structure, when solid state fluidizing exploit when, high pressure sea water minor diameter double layer continuous pipe outer tube downlink, from
The entrance (503) that seawater infuses outer chamber in reducer union body enters the variable diameter cavity (506) of reducer union body, after variable diameter
The outer tube that high pressure sea water enters major diameter double-layer structure pipe string continues traveling downwardly；The gas hydrates to come up are aspirated to connect by variable diameter
Head body (5) reducer union body in inner cavity (507) enter minor diameter double layer continuous pipe inner cavity after continue to be delivered up.
The utility model includes but is not limited to above embodiment, any to meet the claims or specification description,
Meet with principles disclosed herein and novelty, the method for inventive features, technique, product, each fall within the utility model
Within protection scope.
Claims (5)
1. a kind of hydrate solid state fluidizing exploits variable diameter bilayer pipe connection: it is characterised in that it includes reducer union body (5),
Six valve type slips (4) and slips pressing sleeve (3), wherein reducer union body (5) is mounted on the upper end of major diameter double-layer structure pipe string,
It is connect with major diameter double-layer structure pipe string outer tube (8) using taper thread, with major diameter double-layer structure pipe string inner tube (9) using common
It is threadedly coupled；Slips pressing sleeve (3) is mounted on the upper end of reducer union body (5) by regular screw threads connection；Minor diameter double layer continuous
Pipe is mounted on the upper end of reducer union body, and minor diameter double layer continuous pipe inner tube (1) is inserted into the inner cavity of fitting body, slips pressing sleeve (3)
Connection is held tightly by six valve type slips (4) wedge inlet pipe walls in inside；It is equipped in each structure and the junction of reducer union body (5)
O-ring seal (7).
2. a kind of hydrate solid state fluidizing as described in claim 1 exploits variable diameter bilayer pipe connection: it is characterized in that, becoming
Drive connector body (5) upper end is protruded into slips pressing sleeve (3) inner cavity, and the limiting stand of minor diameter double layer continuous pipe is equipped in itself inner cavity
Rank；Middle section diameter is maximum, and the limited step (502) of pressing sleeve is used for the limit of pressing sleeve on reducer union body, and inside has
Variable diameter cavity (506), the cavity connect the external pipe of minor diameter double layer continuous pipe and major diameter double-layer structure pipe string, lower section
Then it is equipped with the limited step of major diameter double-layer structure pipe string outer tube on the reducer union body of major diameter double-layer structure pipe string outer tube (8)
(504)；The diameter of reducer union body (5) lower end is identical as upper end, major diameter on the reducer union body generated with middle section
The limited step (505) of double-layer structure pipe string inner tube is used for the limit of major diameter double-layer structure pipe string inner tube (9).
3. a kind of hydrate solid state fluidizing as described in claim 1 exploits variable diameter bilayer pipe connection: it is characterized in that, card
Watt pressing sleeve (3) is by adjacent to each other during being threaded into reducer union body (5), and six valve type slips (4) are in slips pressing sleeve
(3) movement is generated by the thrust of reducer union body (5) in, the outer lozenges (402) of slips is by limit inside slips pressing sleeve
Position step (302) is pressed against minor diameter double layer continuous pipe outer tube (2) effect, and six valve type slips teeth (401) are engaged in small straight
On diameter double layer continuous pipe outer tube (2), connection is realized.
4. a kind of hydrate solid state fluidizing as described in claim 1 exploits variable diameter bilayer pipe connection: it is characterized in that, institute
The variable diameter cavity (506) of reducer union body (5) is stated as circumferential equally distributed four annular fiowpaths, exit area of passage is greater than
Inlet, inner space is larger, and section is convex outward, guarantees that vibration can be reduced when high-pressure fluid deflecting.
5. a kind of hydrate solid state fluidizing as described in claim 1 exploits variable diameter bilayer pipe connection: it is characterized in that, institute
Six valve type slips (4) front ends stated are equally divided into six valves, and every valve has nine teeth (401), and flute profile is isosceles trapezoid, and top
Long very little, intermediate there are gaps, and its section is the outer lozenges (402) of slips, and rear end is then step cutting pattern, and internal there are move back
Cutter groove guarantees that minor diameter double layer continuous pipe returns stability and pull resistance when dragging major diameter double-layer structure pipe string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727698.7U CN209354073U (en) | 2018-10-24 | 2018-10-24 | A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727698.7U CN209354073U (en) | 2018-10-24 | 2018-10-24 | A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection |
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| Publication Number | Publication Date |
|---|---|
| CN209354073U true CN209354073U (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821727698.7U Expired - Fee Related CN209354073U (en) | 2018-10-24 | 2018-10-24 | A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999577A (en) * | 2018-10-24 | 2018-12-14 | 西南石油大学 | A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection |
-
2018
- 2018-10-24 CN CN201821727698.7U patent/CN209354073U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999577A (en) * | 2018-10-24 | 2018-12-14 | 西南石油大学 | A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection |
| CN108999577B (en) * | 2018-10-24 | 2024-04-12 | 西南石油大学 | Variable-diameter double-layer pipe connecting device for solid-state fluidization exploitation of hydrate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190906 |