CA2196572C - Pipe joint - Google Patents
Pipe joint Download PDFInfo
- Publication number
- CA2196572C CA2196572C CA002196572A CA2196572A CA2196572C CA 2196572 C CA2196572 C CA 2196572C CA 002196572 A CA002196572 A CA 002196572A CA 2196572 A CA2196572 A CA 2196572A CA 2196572 C CA2196572 C CA 2196572C
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- sections
- joining
- joining member
- engaging
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Pipe joint for joining two pipe end sections (1, 1'), the pipes support in their walls one or more bores (7) and/or lines or conduits (8) for hydraulic or electrical energy transfer. The pipe joint comprises a pipe union (3) with internal threads (13, 13'), one section thereof is threaded to the right, and another to the left. These threads correspond respectively with similar external threads (6, 6') at the pipe ends. A joining part (2) is arranged between the two pipe ends, and serves to mutually centre and lock the pipe end sections. In the joining part (2) there is arranged joining sleeves (4) for each bore (7) or line (8), to obtain a tight joint between these.
Description
. 26625-240 Pipe joint This invention relates to a pipe joint for joining two pipe ends, for hydraulic or electrical signal or energy transfer, the pipes have one or more longitudinal bores and/or lines or conduits in their walls.
The joint comprises a pipe union having internal threads with one section threaded to the left and another section threaded to the right, corresponding respectively to external threads on the pipe end sections.
In production of oil and/or gas from a reservoir in a geological formation it is desirable to transfer signals concerning production and equipment parameters, or it may be desirable to transmit electrical or hydraulic energy to equipment used in the reservoir, e.g. for controlling or operation of valves or the like. Often it may be desirable to supply a fluid to the reservoir, e.g. a tracer, a packing fluid or a solution/cleaning agent.
Previously it has been attempted to arrange lines in the walls of a production pipe in an oil/gas well, to transfer signals, energy or a liquid as mentioned above. A
production pipe of this type consists of several pipe sections interconnected by pipe joints, and this state of the art joint does not satisfy the demand of fluid tightness and does not have the performing characteristics as foreseen. One example of this state of the art is disclosed in EP 0 489 137 B1.
It is therefore an object of the present invention to provide an improved pipe joint of the above mentioned type, which is durable, simple and inexpensive to produce. A
further object of the invention is to provide a joint for easy joining of two pipe ends, where the joint can withstand high pressures.
According to one aspect of the present invention, there is provided a pipe joint assembly for joining opposing ends of two pipe sections which each include at least one longitudinal bore formed therein, said pipe joint assembly comprising: a pipe union having first and second threaded sections for engaging mating threads of the two pipe sections, respectively, said first threaded section being formed in an internal peripheral surface at a first end of said pipe union, and said second threaded section being formed in an internal peripheral surface of said pipe union at a second end of said pipe union, wherein said first and second threaded sections are oriented in opposite directions; and a joining member insertable in said pipe union for mutually receiving, aligning and locking the two pipe end sections in the mutually aligned position; and at least one longitudinally extending joining sleeve connected to said joining member, said joining sleeve having a first end for engaging in the at least one bore formed in one of the two pipe sections and a second end for engaging in the at least one bore formed in the other of the two pipe sections.
According to another aspect of the present invention, there is provided a pipe joint comprising: a first pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said first pipe section for receiving a conduit therein;
a second pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said second pipe section for receiving the conduit therein; a pipe union having first and second internally threaded sections engaging said externally threaded ends of 2a said first and second pipe sections, respectively, wherein said first and second internally threaded sections are threaded in opposite directions; a joining member, inserted in said pipe union, for engaging and aligning said first and second pipe sections; at least one joining sleeve extending through said joining member and engaging in said longitudinally extending passages formed in said first and second pipe sections so as to effect a tight seal therebetween.
One way of carrying out the invention is described in detail below with reference to drawings that illustrate one specific embodiment in which:
Fig. 1 is an exploded view of a pipe joint in accordance with the invention, Fig. 2 is on an enlarged scale one of the two similar pipe ends as shown in fig. 1, viewed at the end and at the section lines A-A, Fig. 3 is on an enlarged scale a joining part as shown in fig. 1, viewed at the end and at the section lines B-B.
As mentioned above, fig. 1 shows an exploded view of a pipe joint according to the invention. Between the pipes 1, 1' (only end sections shown here) the joint comprises a joining part 2. The pipes 1, 1' and the joining part is adapted to be connected by the means of a pipe union 3, provided with two internal threaded sections 13, 13', one section is threaded to the right, the other to the left. The threaded sections correspond respectively to external right and left oriented threads 6, 6' at the end sections of the pipes.
i i 2b The pipes, or more precisely the pipe end sections, in the joint are identical. Therefore, of practicable reasons, only one pipe end 1 is shown in fig. 2.
As will be seen, (see also fig. 1) the pipe end section 1 has two external recesses diametrically opposed to each other. The recesses 10 serve as female parts corresponding with male parts 5 formed at the joining part 2 (see a later section).
The pipe 1 may comprise one or more lines 8 for 1.0 hydraulic fluid, electric cables or the like, longitudinally oriented in a recess or recesses formed in the pipe, where each of said recesses passes on to a bore 7 at the pipe end section. At the end, the bore 7 may advantageously be shaped conical by a reamer, and the line 8 may be expanded into contact with the wall at the outermost part of the conical section 9. Further, the line may advantageously be fixed in the bore 7 at the edge surface of the pipe end by diametrically opposed welded points (not shown) to hold the line in position in the bore before assembling the joint.
21~b572 WO 96!04502 3 PCT/N095/00132 As will be seen in fig. 3 (see also fig. 1 ), and as mentioned above, the joining part 2 has a couple of male parts, shaped as diametrically opposed projections that corresponds with the female parts 10, 10' at the pipe end sections 1, 1'. Said male and female parts may advantageously have a minor conical shape (at guiding edges 15, 15' and 16, 16'), and serves both as a device for mutual centring of the two pipe end sections 1, 1', and as a locking device to inhibit mutual rotation of the pipe ends.
The joining part 2 is provided with one or more joining sleeves 4 that protrudes through the bores in the joining part corresponding with the lines) 8/the bores) 7.
The joining sleeve 4 is provided with conical shaped ends 14, 14', and when assembling the joint it will be pressed inwardly into the opening of the line 8/the bore 7 such that a tight joint between the corresponding parts is achieved.
End surfaces 11, 11' of the joining part 2 and the end surfaces 12, 12' of the pipes may both advantageously be provided with labyrinth recesses (not shown) to support a lead packing or the like to obtain good tightness between the pipes The claimed invention is not limited to the above mentioned device for centring and locking formed as in pairs opposed male and female parts, it may instead be provided with locking pins that protrudes through bores in the joining part and into bores in the two pipe ends 1, 1' (not shown). The joining sleeves may, instead of being arranged in bores through the joining part, be arranged in longitudinal recesses in said part (not shown).
As mentioned above, the pipes 1, 1' may be provided with longitudinal lines 8 or bores 7. This will depend upon the length of the pipes. Thus, for minor pipe lengths it will be relevant to provide the pipe with bores that pass from one end to the other, the bores terminate in conical sections at the pipe ends. Larger pipe lengths may not be drilled throughout its whole length, these pipes may be provided with thin conduits or lines 8 arranged in recesses in the pipes 1, 1', each of which passes on to bores 7 at the end of the pipes 1, 1', as described in the embodiment above.
The joint comprises a pipe union having internal threads with one section threaded to the left and another section threaded to the right, corresponding respectively to external threads on the pipe end sections.
In production of oil and/or gas from a reservoir in a geological formation it is desirable to transfer signals concerning production and equipment parameters, or it may be desirable to transmit electrical or hydraulic energy to equipment used in the reservoir, e.g. for controlling or operation of valves or the like. Often it may be desirable to supply a fluid to the reservoir, e.g. a tracer, a packing fluid or a solution/cleaning agent.
Previously it has been attempted to arrange lines in the walls of a production pipe in an oil/gas well, to transfer signals, energy or a liquid as mentioned above. A
production pipe of this type consists of several pipe sections interconnected by pipe joints, and this state of the art joint does not satisfy the demand of fluid tightness and does not have the performing characteristics as foreseen. One example of this state of the art is disclosed in EP 0 489 137 B1.
It is therefore an object of the present invention to provide an improved pipe joint of the above mentioned type, which is durable, simple and inexpensive to produce. A
further object of the invention is to provide a joint for easy joining of two pipe ends, where the joint can withstand high pressures.
According to one aspect of the present invention, there is provided a pipe joint assembly for joining opposing ends of two pipe sections which each include at least one longitudinal bore formed therein, said pipe joint assembly comprising: a pipe union having first and second threaded sections for engaging mating threads of the two pipe sections, respectively, said first threaded section being formed in an internal peripheral surface at a first end of said pipe union, and said second threaded section being formed in an internal peripheral surface of said pipe union at a second end of said pipe union, wherein said first and second threaded sections are oriented in opposite directions; and a joining member insertable in said pipe union for mutually receiving, aligning and locking the two pipe end sections in the mutually aligned position; and at least one longitudinally extending joining sleeve connected to said joining member, said joining sleeve having a first end for engaging in the at least one bore formed in one of the two pipe sections and a second end for engaging in the at least one bore formed in the other of the two pipe sections.
According to another aspect of the present invention, there is provided a pipe joint comprising: a first pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said first pipe section for receiving a conduit therein;
a second pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said second pipe section for receiving the conduit therein; a pipe union having first and second internally threaded sections engaging said externally threaded ends of 2a said first and second pipe sections, respectively, wherein said first and second internally threaded sections are threaded in opposite directions; a joining member, inserted in said pipe union, for engaging and aligning said first and second pipe sections; at least one joining sleeve extending through said joining member and engaging in said longitudinally extending passages formed in said first and second pipe sections so as to effect a tight seal therebetween.
One way of carrying out the invention is described in detail below with reference to drawings that illustrate one specific embodiment in which:
Fig. 1 is an exploded view of a pipe joint in accordance with the invention, Fig. 2 is on an enlarged scale one of the two similar pipe ends as shown in fig. 1, viewed at the end and at the section lines A-A, Fig. 3 is on an enlarged scale a joining part as shown in fig. 1, viewed at the end and at the section lines B-B.
As mentioned above, fig. 1 shows an exploded view of a pipe joint according to the invention. Between the pipes 1, 1' (only end sections shown here) the joint comprises a joining part 2. The pipes 1, 1' and the joining part is adapted to be connected by the means of a pipe union 3, provided with two internal threaded sections 13, 13', one section is threaded to the right, the other to the left. The threaded sections correspond respectively to external right and left oriented threads 6, 6' at the end sections of the pipes.
i i 2b The pipes, or more precisely the pipe end sections, in the joint are identical. Therefore, of practicable reasons, only one pipe end 1 is shown in fig. 2.
As will be seen, (see also fig. 1) the pipe end section 1 has two external recesses diametrically opposed to each other. The recesses 10 serve as female parts corresponding with male parts 5 formed at the joining part 2 (see a later section).
The pipe 1 may comprise one or more lines 8 for 1.0 hydraulic fluid, electric cables or the like, longitudinally oriented in a recess or recesses formed in the pipe, where each of said recesses passes on to a bore 7 at the pipe end section. At the end, the bore 7 may advantageously be shaped conical by a reamer, and the line 8 may be expanded into contact with the wall at the outermost part of the conical section 9. Further, the line may advantageously be fixed in the bore 7 at the edge surface of the pipe end by diametrically opposed welded points (not shown) to hold the line in position in the bore before assembling the joint.
21~b572 WO 96!04502 3 PCT/N095/00132 As will be seen in fig. 3 (see also fig. 1 ), and as mentioned above, the joining part 2 has a couple of male parts, shaped as diametrically opposed projections that corresponds with the female parts 10, 10' at the pipe end sections 1, 1'. Said male and female parts may advantageously have a minor conical shape (at guiding edges 15, 15' and 16, 16'), and serves both as a device for mutual centring of the two pipe end sections 1, 1', and as a locking device to inhibit mutual rotation of the pipe ends.
The joining part 2 is provided with one or more joining sleeves 4 that protrudes through the bores in the joining part corresponding with the lines) 8/the bores) 7.
The joining sleeve 4 is provided with conical shaped ends 14, 14', and when assembling the joint it will be pressed inwardly into the opening of the line 8/the bore 7 such that a tight joint between the corresponding parts is achieved.
End surfaces 11, 11' of the joining part 2 and the end surfaces 12, 12' of the pipes may both advantageously be provided with labyrinth recesses (not shown) to support a lead packing or the like to obtain good tightness between the pipes The claimed invention is not limited to the above mentioned device for centring and locking formed as in pairs opposed male and female parts, it may instead be provided with locking pins that protrudes through bores in the joining part and into bores in the two pipe ends 1, 1' (not shown). The joining sleeves may, instead of being arranged in bores through the joining part, be arranged in longitudinal recesses in said part (not shown).
As mentioned above, the pipes 1, 1' may be provided with longitudinal lines 8 or bores 7. This will depend upon the length of the pipes. Thus, for minor pipe lengths it will be relevant to provide the pipe with bores that pass from one end to the other, the bores terminate in conical sections at the pipe ends. Larger pipe lengths may not be drilled throughout its whole length, these pipes may be provided with thin conduits or lines 8 arranged in recesses in the pipes 1, 1', each of which passes on to bores 7 at the end of the pipes 1, 1', as described in the embodiment above.
Claims (14)
1. A pipe joint assembly for joining opposing ends of two pipe sections which each include at least one longitudinal bore formed therein, said pipe joint assembly comprising:
a pipe union having first and second threaded sections for engaging mating threads of the two pipe sections, respectively, said first threaded section being formed in an internal peripheral surface at a first end of said pipe union, and said second threaded section being formed in an internal peripheral surface of said pipe union at a second end of said pipe union, wherein said first and second threaded sections are oriented in opposite directions; and a joining member insertable in said pipe union for mutually receiving, aligning and locking the two pipe end sections in the mutually aligned position; and at least one longitudinally extending joining sleeve connected to said joining member, said joining sleeve having a first end for engaging in the at least one bore formed in one of the two pipe sections and a second end for engaging in the at least one bore formed in the other of the two pipe sections.
a pipe union having first and second threaded sections for engaging mating threads of the two pipe sections, respectively, said first threaded section being formed in an internal peripheral surface at a first end of said pipe union, and said second threaded section being formed in an internal peripheral surface of said pipe union at a second end of said pipe union, wherein said first and second threaded sections are oriented in opposite directions; and a joining member insertable in said pipe union for mutually receiving, aligning and locking the two pipe end sections in the mutually aligned position; and at least one longitudinally extending joining sleeve connected to said joining member, said joining sleeve having a first end for engaging in the at least one bore formed in one of the two pipe sections and a second end for engaging in the at least one bore formed in the other of the two pipe sections.
2. The pipe joint assembly as claimed in claim 1, wherein said joining sleeve is arranged in a longitudinal bore formed in a wall of said joining member.
3. The pipe joint assembly as claimed in claim 1, wherein said joining sleeve is arranged in a longitudinal recess formed in a wall of said joining member.
4. The pipe joint assembly as claimed in claim 1, wherein said joining sleeve has first and second tapered ends for guiding said joining sleeve into the corresponding bores in the pipe sections.
5. The pipe joint assembly as claimed in claim 1, wherein each of the pipe sections includes diametrically opposed recesses formed in an outer peripheral surface thereof, and said joining member includes:
a first pair of diametrically opposed projections extending from a first end of said joining member for engaging in the diametrically opposed recesses of one of the pipe sections; and a second pair of diametrically opposed projections extending from a second end of said joining member for engaging in the diametrically opposed recesses of the other of the pipe sections.
a first pair of diametrically opposed projections extending from a first end of said joining member for engaging in the diametrically opposed recesses of one of the pipe sections; and a second pair of diametrically opposed projections extending from a second end of said joining member for engaging in the diametrically opposed recesses of the other of the pipe sections.
6. The pipe joint assembly as claimed in claim 5, wherein each of said projections has edge surfaces which are tapered for guiding said projections into the corresponding recesses of the pipe sections.
7. A pipe joint comprising:
a first pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said first pipe section for receiving a conduit therein;
a second pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said second pipe section for receiving the conduit therein;
a pipe union having first and second internally threaded sections engaging said externally threaded ends of said first and second pipe sections, respectively, wherein said first and second internally threaded sections are threaded in opposite directions;
a joining member, inserted in said pipe union, for engaging and aligning said first and second pipe sections;
at least one joining sleeve extending through said joining member and engaging in said longitudinally extending passages formed in said first and second pipe sections so as to effect a tight seal therebetween.
a first pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said first pipe section for receiving a conduit therein;
a second pipe section having an externally threaded end and at least one longitudinally extending passage formed in a wall of said second pipe section for receiving the conduit therein;
a pipe union having first and second internally threaded sections engaging said externally threaded ends of said first and second pipe sections, respectively, wherein said first and second internally threaded sections are threaded in opposite directions;
a joining member, inserted in said pipe union, for engaging and aligning said first and second pipe sections;
at least one joining sleeve extending through said joining member and engaging in said longitudinally extending passages formed in said first and second pipe sections so as to effect a tight seal therebetween.
8. The pipe joint as claimed in claim 7, wherein said joining sleeve is arranged in a longitudinal bore formed in a wall of said joining member.
9. The pipe joint as claimed in claim 7, wherein said joining sleeve is arranged in a longitudinal recess formed in a wall of said joining member.
10. The pipe joint as claimed in claim 7, wherein said joining sleeve has first and second tapered ends for guiding said joining sleeve into said longitudinally extending passages of said first and second pipe sections, respectively.
11. The pipe joint as claimed in claim 7, wherein each of said first and second pipe sections includes a pair of diametrically opposed recesses formed in an outer peripheral surface thereof, and said joining member includes:
a first pair of diametrically opposed projections extending from a first end of said joining member and engaging in said pair of recesses formed in one of said first and second pipe sections; and a second pair of diametrically opposed projections extending from a second end of said joining member and engaging in said pair of recesses formed in the other of said first and second pipe sections, wherein said first and second pair of diametrically opposed projections function to guide linear movement of said first and second pipe sections toward said joining member.
a first pair of diametrically opposed projections extending from a first end of said joining member and engaging in said pair of recesses formed in one of said first and second pipe sections; and a second pair of diametrically opposed projections extending from a second end of said joining member and engaging in said pair of recesses formed in the other of said first and second pipe sections, wherein said first and second pair of diametrically opposed projections function to guide linear movement of said first and second pipe sections toward said joining member.
12. The pipe joint as claimed in claim 11, wherein each of said projections has edge surfaces which are tapered for guiding said projections into said corresponding diametrically opposed recesses of said first and second pipe sections.
13. The pipe joint as claimed in claim 7, further comprising a conduit provided in each of said longitudinally extending passages of said first and second pipe sections.
14. The pipe joint as claimed in claim 13, wherein each of said longitudinally extending passages of said first and second pipe sections includes an outwardly expanded conical portion at an end of said corresponding pipe section and said conduit is expanded into contact with said conical portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO942889 | 1994-08-03 | ||
| NO19942889A NO307625B1 (en) | 1994-08-03 | 1994-08-03 | Rudder shot for joining two rudders with longitudinal wires in the rudder wall |
| PCT/NO1995/000132 WO1996004502A1 (en) | 1994-08-03 | 1995-07-21 | Pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2196572A1 CA2196572A1 (en) | 1996-02-15 |
| CA2196572C true CA2196572C (en) | 2006-07-18 |
Family
ID=36694030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002196572A Expired - Lifetime CA2196572C (en) | 1994-08-03 | 1995-07-21 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2196572C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431964A (en) * | 2021-07-27 | 2021-09-24 | 江西艾克实业有限公司 | Pipeline joint convenient to installation |
-
1995
- 1995-07-21 CA CA002196572A patent/CA2196572C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2196572A1 (en) | 1996-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20150721 |