CN108005587B - Three-channel continuous flexible composite pipe connecting joint and installation method - Google Patents
Three-channel continuous flexible composite pipe connecting joint and installation method Download PDFInfo
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- CN108005587B CN108005587B CN201711492310.XA CN201711492310A CN108005587B CN 108005587 B CN108005587 B CN 108005587B CN 201711492310 A CN201711492310 A CN 201711492310A CN 108005587 B CN108005587 B CN 108005587B
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- composite pipe
- ring
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- 239000002131 composite material Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 title abstract description 4
- 230000006835 compression Effects 0.000 claims description 56
- 238000007906 compression Methods 0.000 claims description 56
- 238000007789 sealing Methods 0.000 claims description 52
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a three-channel continuous flexible composite pipe connecting joint and an installation method, which are used for connecting two independent three-channel continuous flexible composite pipes, keeping three pipelines mutually independent and achieving the purposes of pipeline connection and recycling.
Description
Technical Field
The invention belongs to the technical field of oilfield oil extraction, and particularly relates to a three-way continuous flexible composite pipe connecting joint and an installation method.
Background
With the continuous deep development of the oil field, the formation energy between different oil reservoirs is quickly reduced and has great difference, and the continuous high-efficiency development of the oil field is seriously influenced. The water injection of different oil layers to supplement stratum energy is an effective means for improving recovery ratio, and the conventional injection process mainly comprises oil jacket injection, bridge type eccentric injection, bridge type concentric injection and the like, and the conventional injection process has the problems of high resistivity, long measuring and adjusting period, low adjusting precision and the like along with the gradual advancement of the fine management of oil fields. In order to solve the problem of the test and allocation of the separate injection well, the research of the separate injection technology of the three-channel continuous flexible composite pipe is developed, the water injection development is carried out on the stratum through the three independent water injection channels of the pipe, the underground instrument is measured and adjusted to be automatically metered in the ground flow, the later measuring and adjusting cost is reduced, and the single-layer separate injection qualification rate is improved. However, at present, there is no joint suitable for connecting three-channel continuous flexible composite pipes in the market, so that the product is urgently needed to fill the market gap so as to meet the requirement of fine water injection.
Disclosure of Invention
The invention aims to solve the problem that three-way continuous flexible composite pipes cannot be connected.
The invention provides a three-channel continuous flexible composite pipe connecting joint, which comprises a connecting head, wherein the end parts of two sections of three-channel continuous flexible composite pipes are respectively inserted into the connecting head and are connected through the connecting head;
the flexible composite pipe also comprises a movable connector and a fastening pressing ring, wherein the fastening pressing ring is sleeved on the three-way continuous flexible composite pipe in a penetrating manner and is in abutting contact with the end face of the connector;
the middle part of the outer surface of the connector is provided with an annular bulge along the circumferential direction, the movable connector is threaded and sleeved on the connector, one end face of the movable connector is in abutting contact with the annular bulge, and the other end face of the movable connector is contracted inwards along the radial direction to clamp the fastening compression ring.
The fastening compression ring is composed of an annular base and a plurality of strip-shaped arc plates, the strip-shaped arc plates are round, one end of each strip-shaped arc plate is connected with the annular base, a plurality of sealing ring grooves are formed in the connecting part along the circumferential direction, threads are formed in the other end of each strip-shaped arc plate, and a row of screw holes are formed in the length direction of each strip-shaped arc plate.
The annular base, the strip-shaped arc plate and the integrated forming form a fastening pressure ring, the three-channel continuous flexible composite pipe penetrates through the fastening pressure ring and stretches into the connector, and the movable connector is sleeved on the outer surfaces of the fastening pressure ring and the connector.
The protection cylinder is sleeved on the outer surface of the strip-shaped arc plate of the fastening compression ring in a penetrating mode and is fastened with threads on the strip-shaped arc plate.
And a copper compression ring sleeved on the three-channel continuous flexible composite pipe is arranged between the protection cylinder and the fastening compression ring.
A sealing ring II is arranged between the movable connector and the fastening pressing ring, a sealing ring I is arranged between the protection cylinder and the copper pressing ring, and a sealing ring groove is sleeved with an O-shaped sealing ring.
The method for installing the three-channel continuous flexible composite pipe connection joint comprises the following steps:
the method comprises the steps that firstly, a protection cylinder, a sealing ring I, a copper compression ring, a movable connector, a sealing ring II and a fastening compression ring are sleeved on a three-way continuous flexible composite pipe in sequence;
aligning the annular base of the fastening pressure ring with the end face of the three-way continuous flexible composite pipe, and rotating the screw hole of the fastening pressure ring to the middle position of two adjacent channels of the three-way continuous flexible composite pipe;
thirdly, placing the screw into the screw hole, wherein the screw is well fixed, and the fastening compression ring and the three-way continuous flexible composite pipe are ensured not to move relatively;
sleeving an O-shaped sealing ring in a sealing ring groove of the fastening compression ring, and installing a sealing ring in the sealing ring groove in the connector;
inserting the three-channel continuous flexible composite pipe into a connector provided with a sealing ring, and abutting the end face of the three-channel continuous flexible composite pipe against the connector;
step six, the sealing ring II and the movable connector are sequentially moved to the annular base of the fastening pressing ring, and the positions are fixed tightly through threads of the movable connector and the connector;
step seven, the screw is completely screwed into the three-way continuous flexible composite pipe, so that the top surface of the screw and the surface of the fastening compression ring are ensured to be neat;
step eight, the copper compression ring, the sealing ring I and the protection cylinder are sequentially moved right to abut against the fastening compression ring, and the copper compression ring, the sealing ring I and the protection cylinder are fastened by threads of the fastening compression ring;
and step nine, repeating the steps to finish the connection of the three-way continuous flexible composite pipe at the other end of the connector, and finishing the whole assembly.
The invention has the beneficial effects that: according to the three-channel continuous flexible composite pipe connecting joint and the mounting method, two independent three-channel continuous flexible composite pipes are connected, three pipelines are kept independent of each other, the purpose of pipeline connection and recycling is achieved, meanwhile, the unique structure of the connecting joint can ensure that two connected three-channel continuous flexible composite pipes are in sealing connection, the sealing performance of the whole structure is ensured, and the purpose of fine water injection is achieved.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic illustration of a connector connecting two sections of three-way continuous flexible composite tubing.
Fig. 2 is a schematic structural view of a three-way continuous flexible composite pipe joint.
Fig. 3 is a schematic view of the structure of the tightening ring.
FIG. 4 is a schematic view of a fastening pressure ring threaded over a three-way continuous flexible composite tube.
Fig. 5 is a side view of a fastening collar threaded over a three-way continuous flexible composite tube.
Reference numerals illustrate: 1. a three-channel continuous flexible composite tube; 2. a connector; 3. a protective cylinder; 4. a sealing ring I; 5. a copper compression ring; 6. a screw; 7. an O-shaped sealing ring; 8. a movable connector; 9. a sealing ring II; 10. fastening the compression ring; 10.1, a strip-shaped arc plate; 10.2, threaded holes; 10.3, a seal ring groove; 10.4, an annular base.
Detailed Description
Example 1:
the embodiment provides a three-channel continuous flexible composite pipe connecting joint as shown in fig. 1, which comprises a connecting head 2, wherein the end parts of two sections of three-channel continuous flexible composite pipes 1 are respectively inserted into the connecting head 2 and are connected through the connecting head 2.
The ends of the two-section three-channel continuous flexible composite pipe 1 are respectively inserted into the connector 2, the connector 2 is sealed by a sealing ring, the connector solves the problem of connection of the two three-channel continuous flexible composite pipe, and the three channels are mutually independent.
As shown in fig. 2, the three-channel continuous flexible composite pipe connecting joint further comprises a movable connector 8 and a fastening pressing ring 10, wherein the fastening pressing ring 10 is sleeved on the three-channel continuous flexible composite pipe 1 and is in abutting contact with the end face of the connector 2; the middle part of the outer surface of the connector 2 is provided with an annular bulge along the circumferential direction, the movable connector 8 is threaded and sleeved on the connector 2, one end face is abutted against and contacted with the annular bulge, and the other end face is contracted inwards along the radial direction to clamp the fastening compression ring 10.
The fastening compression ring 10 is sleeved on the three-way continuous flexible composite pipe, the movable connector 8 is sleeved on the fastening compression ring 10 and the connector 2, as shown in fig. 2, one end of the movable connector 8 abuts against the annular bulge of the connector 2, and the other end is tightly clamped with the fastening compression ring 10. The three interactions make the three-way continuous flexible composite pipe connection at the two ends of the connector 2 more firm and compact.
Example 2:
on the basis of embodiment 1, as shown in fig. 3 and 4, the fastening compression ring 10 is composed of an annular base 10.4 and a plurality of strip-shaped arc plates 10.1, the plurality of strip-shaped arc plates 10.1 are round, one end of each strip-shaped arc plate 10.1 is connected with the annular base 10.4, a plurality of seal ring grooves 10.3 are formed in the connected part along the circumferential direction, threads are formed at the other end of each strip-shaped arc plate 10.1, and a row of screw holes 10.2 are formed in the length direction of each strip-shaped arc plate.
The fastening compression ring 10 is sleeved on the three-channel continuous flexible composite pipe, and is clung to the three-channel composite pipe through the screw 6, so that the axial expansion and contraction amount is improved.
Example 3:
on the basis of embodiment 2, as shown in fig. 3 and 4, the annular base 10.4 and the strip-shaped arc-shaped plate 10.1 are integrally formed into a fastening pressing ring 10, the three-channel continuous flexible composite pipe 1 penetrates through the fastening pressing ring 10 to extend into the connector 2, and the movable connector 8 is sleeved on the outer surfaces of the fastening pressing ring 10 and the connector 2. The protection cylinder 3 is sleeved on the outer surface of the strip-shaped arc-shaped plate 10.1 of the fastening compression ring 10, and is fastened with threads on the strip-shaped arc-shaped plate 10.1. A copper compression ring 5 sleeved on the three-way continuous flexible composite pipe 1 is arranged between the protection cylinder 3 and the fastening compression ring 10. A sealing ring II 9 is arranged between the movable connector 8 and the fastening compression ring 10, a sealing ring I4 is arranged between the protection cylinder 3 and the copper compression ring 5, and an O-shaped sealing ring 7 is sleeved on the sealing ring groove 10.3. The combination of the protection cylinder 3, the sealing ring I4 and the O-shaped sealing ring 7 is utilized to realize the isolation of the internal components of the joint and external media.
Example 4:
the embodiment provides a method for installing a three-way continuous flexible composite pipe connection joint, which comprises the following steps:
firstly, sequentially sleeving a protection cylinder 3, a sealing ring I4, a copper compression ring 5, a movable connector 8, a sealing ring II 9 and a fastening compression ring 10 on a three-way continuous flexible composite pipe 1 in a penetrating manner;
aligning the annular base 10.4 of the fastening compression ring 10 with the end face of the three-channel continuous flexible composite pipe 1, and rotating the screw hole 10.2 of the fastening compression ring 10 to the middle position of two adjacent channels of the three-channel continuous flexible composite pipe 1 (as shown in fig. 5);
step three, the screw 6 is placed into the screw hole 10.2 to be fixed (the screw can not be completely screwed in), so that the fastening compression ring 10 and the three-way continuous flexible composite pipe 1 are ensured not to move relatively;
step four, sleeving the O-shaped sealing ring 7 in a sealing ring groove 10.3 of the fastening compression ring 10, and installing a sealing ring in the sealing ring groove in the connector 2;
inserting the three-channel continuous flexible composite pipe 1 into the connector 2 provided with the sealing ring, and abutting the end surface of the three-channel continuous flexible composite pipe 1 against the connector 2;
step six, sequentially moving the sealing ring II 9 and the movable connector 8 to the position of the annular base 10.4 of the fastening pressing ring 10, and fixing the sealing ring II and the movable connector 8 with threads of the connector 2;
step seven, the screw 6 is completely screwed into the three-channel continuous flexible composite pipe 1, so that the top surface of the screw 6 and the surface of the fastening compression ring 10 are ensured to be neat;
step eight, the copper compression ring 5, the sealing ring I4 and the protection cylinder 3 are sequentially moved right and abutted against the fastening compression ring 10, and the protection cylinder 3 is fastened with the fastening compression ring 10 through threads;
and step nine, repeating the steps to finish the connection of the three-channel continuous flexible composite pipe 1 at the other end of the connector 2, and finishing the whole assembly.
The foregoing examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and all designs that are the same or similar to the present invention are within the scope of the present invention. The components and structures not specifically described in this embodiment are well known in the art and are not described in detail herein.
Claims (4)
1. A three-channel continuous flexible composite pipe connecting joint is characterized in that: the device comprises a connector (2), wherein the end parts of two sections of three-channel continuous flexible composite pipes (1) are respectively inserted into the connector (2) and are connected through the connector (2), the device also comprises a movable connector (8) and a fastening pressing ring (10), and the fastening pressing ring (10) is sleeved on the three-channel continuous flexible composite pipes (1) in a penetrating manner and is in abutting contact with the end face of the connector (2);
the middle part of the outer surface of the connector (2) is provided with an annular bulge along the circumferential direction, the movable connector (8) is threaded and sleeved on the connector (2), one end face is in tight contact with the annular bulge, and the other end face radially inwards contracts to clamp the fastening compression ring (10);
the fastening compression ring (10) consists of an annular base (10.4) and a plurality of strip-shaped arc plates (10.1), the strip-shaped arc plates (10.1) are round, one end of each strip-shaped arc plate is connected with the annular base (10.4) and provided with a plurality of sealing ring grooves (10.3) along the circumferential direction at the connected part, the other end of each strip-shaped arc plate (10.1) is provided with threads, and a row of screw holes (10.2) are formed in the length direction of each strip-shaped arc plate (10.1);
the annular base (10.4) and the strip-shaped arc-shaped plate (10.1) are integrally formed to form a fastening compression ring (10), the three-channel continuous flexible composite pipe (1) penetrates through the fastening compression ring (10) and stretches into the connector (2), the movable connector (8) is sleeved on the outer surfaces of the fastening compression ring (10) and the connector (2), the annular base further comprises a protection cylinder (3), and the protection cylinder (3) is sleeved on the outer surface of the strip-shaped arc-shaped plate (10.1) of the fastening compression ring (10) and is fastened with threads on the strip-shaped arc-shaped plate (10.1).
2. The three-channel continuous flexible composite pipe joint as defined in claim 1, wherein: a copper compression ring (5) sleeved on the three-way continuous flexible composite pipe (1) is arranged between the protection cylinder (3) and the fastening compression ring (10).
3. The three-channel continuous flexible composite pipe joint as defined in claim 2, wherein: a sealing ring II (9) is arranged between the movable connector (8) and the fastening compression ring (10), a sealing ring I (4) is arranged between the protection cylinder (3) and the copper compression ring (5), and an O-shaped sealing ring (7) is sleeved on the sealing ring groove (10.3).
4. A method of installing a three-channel continuous flexible composite pipe joint as defined in claim 3, comprising the steps of:
firstly, sequentially sleeving a protection cylinder (3), a sealing ring I (4), a copper compression ring (5), a movable connector (8), a sealing ring II (9) and a fastening compression ring (10) on a three-way continuous flexible composite pipe (1) in a penetrating manner;
aligning the annular base (10.4) of the fastening pressing ring (10) with the end face of the three-channel continuous flexible composite pipe (1), and rotating the screw hole (10.2) of the fastening pressing ring (10) to the middle position of two adjacent channels of the three-channel continuous flexible composite pipe (1);
step three, putting the screw (6) into the screw hole (10.2) to fix well, so as to ensure that the fastening compression ring (10) and the three-channel continuous flexible composite pipe (1) do not move relatively;
step four, sleeving an O-shaped sealing ring (7) in a sealing ring groove (10.3) of the fastening compression ring (10), and installing a sealing ring in the sealing ring groove in the connector (2);
inserting the three-channel continuous flexible composite pipe (1) into a connector (2) provided with a sealing ring, and abutting the end surface of the three-channel continuous flexible composite pipe (1) against the connector (2);
step six, sequentially moving the sealing ring II (9) and the movable connector (8) to the position of the annular base (10.4) of the fastening pressing ring (10), and fixing the sealing ring II and the movable connector (8) with the threads of the connector (2) tightly;
step seven, the screw (6) is completely screwed into the three-channel continuous flexible composite pipe (1), so that the top surface of the screw (6) and the surface of the fastening compression ring (10) are ensured to be tidy;
step eight, the copper compression ring (5), the sealing ring I (4) and the protection cylinder (3) are sequentially moved right and abutted against the fastening compression ring (10), and the copper compression ring is fastened with the fastening compression ring (10) through threads of the protection cylinder (3);
and step nine, repeating the steps to finish the connection of the three-channel continuous flexible composite pipe (1) at the other end of the connector (2) and finish the whole assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492310.XA CN108005587B (en) | 2017-12-30 | 2017-12-30 | Three-channel continuous flexible composite pipe connecting joint and installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492310.XA CN108005587B (en) | 2017-12-30 | 2017-12-30 | Three-channel continuous flexible composite pipe connecting joint and installation method |
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| Publication Number | Publication Date |
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| CN108005587A CN108005587A (en) | 2018-05-08 |
| CN108005587B true CN108005587B (en) | 2023-05-26 |
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| CN201711492310.XA Active CN108005587B (en) | 2017-12-30 | 2017-12-30 | Three-channel continuous flexible composite pipe connecting joint and installation method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108843287B (en) * | 2018-05-30 | 2019-04-09 | 大庆市华禹石油机械制造有限公司 | Two to seven layers are exempted from accurate testing dispenser and technique |
| CN108980476B (en) * | 2018-06-19 | 2019-05-03 | 门雨晴 | A kind of oil field multilayer is exempted to survey accurate water filling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015026668A1 (en) * | 2013-08-17 | 2015-02-26 | Antelope Oil Tools & Mfg. Co., Llc | Wrap-around stop collar and method of forming |
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2017
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| WO2001025667A1 (en) * | 1999-10-01 | 2001-04-12 | Fiberspar Corporation | Composite coiled tubing end connector and pipe-to-pipe connector |
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| CN108005587A (en) | 2018-05-08 |
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