CN210460630U - Small-diameter insulation short joint - Google Patents
Small-diameter insulation short joint Download PDFInfo
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- CN210460630U CN210460630U CN201921213544.0U CN201921213544U CN210460630U CN 210460630 U CN210460630 U CN 210460630U CN 201921213544 U CN201921213544 U CN 201921213544U CN 210460630 U CN210460630 U CN 210460630U
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Abstract
The utility model relates to a small diameter insulation nipple joint, including first lock pin (1), first joint (2), second joint (10), third joint (12), second lock pin (11), insulating casing (3), insulating spacer sleeve (4), insulating cover (6), insulating spacer ring (9) and fixed subassembly. This insulating nipple joint of minor diameter adopts the fine reinforced material of PEEK glass as the material of the insulating section between each joint, and the fine reinforced material of PEEK glass has toughness and rigidity concurrently for this insulating nipple joint possesses better resistance to compression tensile properties, thereby is favorable to realizing the miniaturization of this insulating nipple joint, makes insulating nipple joint can use in the well logging of barefoot well, and then improves logging efficiency, reduces the incident such as well condition collapse's incident.
Description
Technical Field
The utility model belongs to the technical field of oil exploration, concretely relates to insulating nipple joint of minor diameter.
Background
In oil logging, open hole logging is mainly used for testing formation related parameters after well drilling and completion.
The traditional open hole logging operation is divided into two operation modes, namely a vertical well operation mode and a horizontal well operation mode. When logging in a vertical well, drilling equipment such as a drill rod, a drill collar, a drill bit and the like are required to be lifted out of a well hole, and then the drilling equipment is lowered to a specified position through a cable connecting instrument string for logging. When the horizontal well is logged, the instrument needs to be hung at the bottom of a drill rod, the drill rod pushes the instrument to a specified position, and then a series of special horizontal well logging tools such as a bypass tool are added to lift the instrument up for logging.
The existing logging instrument is adopted to log the open hole, if the well condition is not good, no matter in a diameter logging mode or a horizontal logging mode, the logging instrument cannot be put down due to large diameter, the logging instrument needs to be put down for drifting again, after drifting, the drill rod, the drill collar and the drill bit are taken out of the well hole again, and the logging instrument is put down again for logging. The tripping time is too long, so the logging efficiency is very low, the occupation time is long, and the well condition is easy to collapse and other accidents. Therefore, the development of a set of instruments which have small diameter, can be used for drilling through a drill pipe and logging in a water hole through a drill bit has wide market.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides an insulating nipple joint of minor diameter. The to-be-solved technical problem of the utility model is realized through following technical scheme:
the embodiment of the utility model provides a small-diameter insulating short section, which comprises a first inserting core, a first joint, a second joint, a third joint, a second inserting core, an insulating shell, an insulating isolation sleeve, an insulating isolation ring and a fixing component, wherein,
the end part of the second joint is sleeved on the end part of the first joint;
the end part of the second joint far away from the first joint is sleeved at the end part of the third joint;
the insulating shell is sleeved on the outer wall of the first connector and the end part of the second connector;
the insulating isolation sleeve is sleeved between the first joint and the second joint and is in contact with the insulating shell and the outer wall of the first joint;
the insulating sleeve is sleeved between the first joint and the second joint and is in contact with the insulating isolation sleeve;
one part of the insulating isolating ring is sleeved between the first joint and the second joint and is contacted with the second joint, and the other part of the insulating isolating ring is arranged between the second joint and the third joint and is contacted with the third joint;
the fixing assembly is arranged between the end part of the first joint and the insulating isolating ring;
the insulating shell, the insulating isolation sleeve, the insulating sleeve and the insulating isolation ring are all made of PEEK glass fiber reinforced materials;
the first inserting core is embedded into the end part of the first joint far away from the second joint;
the second inserting core is embedded into the end part of the third joint far away from the second joint;
the first inserting core and the second inserting core are connected through a penetrating wire, and the penetrating wire penetrates through the first joint, the second joint and the third joint.
In an embodiment of the present invention, the resistance of the insulating housing, the insulating spacer, the insulating sleeve and the insulating spacer ring is greater than 500M Ω.
In an embodiment of the present invention, the side wall of the first joint contacting the insulating housing and the second joint form a concave surface, the insulating housing and the side of the first joint contacting each other have a convex surface, and the concave surface and the convex surface of the insulating housing match each other.
In an embodiment of the present invention, the fixing assembly includes a fixing ring, the fixing ring is disposed between the insulating isolation ring and the end of the first joint, and one end of the fixing ring contacts with the insulating sleeve, and the other end of the fixing ring extends out of the first joint.
In an embodiment of the present invention, the fixing assembly further includes a locking nut, one end of the locking nut is inserted into the end portion of the fixing ring extending out of the first joint, and the other end of the locking nut is in contact with the insulating spacer ring.
In an embodiment of the present invention, the connector further comprises an anti-rotation pin, wherein the anti-rotation pin passes through the insulating isolation sleeve and is connected with the first joint and the second joint.
In an embodiment of the present invention, the anti-rotation pin is made of an insulating material.
The utility model discloses an in one embodiment, still include helmet and end cap, wherein, the helmet cover is established the tip that the second connects was kept away from to the first joint, the end cap embedding the third connects the tip of keeping away from the second connects.
In an embodiment of the present invention, the diameters of the first joint, the second joint and the third joint are less than or equal to 43 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a small diameter insulation nipple joint adopts the fine reinforced material of the glass of PEEK glass as each material of the insulating section between the joint, and the fine reinforced material of the glass of PEEK glass has toughness and rigidity concurrently for this insulation nipple joint possesses better resistance to compression tensile properties, thereby is favorable to realizing the miniaturization of this insulation nipple joint, makes insulation nipple joint can use in the well logging of bore hole, and then improves the well logging efficiency, reduces the incident such as well condition collapses the incidence of accident.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a small-diameter insulation short joint provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a gap section of the small-diameter gap sub in FIG. 1.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Example one
The insulating short section is one of important parts of a dual-lateral electrical logging instrument and has the function of realizing the upper and lower insulation and isolation of the instrument. The embodiment provides an insulating short section with good insulating section performance and smaller diameter, and the insulating short section is suitable for an open hole well logging process.
Please refer to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an insulation short section with a small diameter according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of an insulation section of the insulation short section with a small diameter in fig. 1.
The small-diameter insulation short section in fig. 1 comprises a first ferrule 1, a first joint 2, a second joint 10, a third joint 12, a second ferrule 11, an insulation shell 3, an insulation isolation sleeve 4, an anti-rotation pin 5, an insulation sleeve 6, an insulation isolation ring 9 and a fixing component, wherein the insulation shell 3, the insulation isolation sleeve 4, the anti-rotation pin 5, the insulation sleeve 6, the insulation isolation ring 9 and the fixing component form an insulation section in fig. 2.
One end of the second joint 10 is sleeved on the end of the first joint 2. The other end of the second joint 10 is sleeved at the end of the third joint 12 through a threaded pull ring, and a sealing ring is arranged at the sleeved position of the two. When the gap sub of the embodiment is used for logging, the first joint 2 is an upper joint, the third joint 12 is a lower joint, and the second joint 10 is a middle joint.
The insulating shell 3 is sleeved on the outer wall of the first connector 2 and the end part of the second connector 10, and sealing rings are arranged at the connecting parts of the two ends of the insulating shell 3; specifically, one side of the insulating shell 3, which is in contact with the first joint 2, is provided with a convex surface, the side wall of the insulating shell 3, which is in contact with the first joint 2, is provided with a step structure, the step structure and the second joint 10 jointly form a concave surface, and the convex surface of the insulating shell 3 is matched with the concave surface, so that the joint of the three forms a flat surface, and an instrument can penetrate through a drill rod.
The insulating isolation sleeve 4 is arranged between the outer wall of the first connector 2 and the inner wall of the second connector 10, the insulating isolation sleeve 4 is in contact with the outer wall of the first connector 2, and the insulating isolation sleeve 4 is in contact with the insulating shell 3. The anti-rotation pin 5 penetrates through the insulating isolation sleeve 4 to be connected with the outer wall of the first connector 2 and the inner wall of the second connector 10, and the anti-rotation pin 5 prevents logging errors caused by rotation between the first connector 2 and the second connector 10 during logging.
Because the anti-rotation pin 5 is connected with the first joint 2 and the second joint 10, and the first joint 2 and the second joint 10 are insulated from each other, the anti-rotation pin 5 is made of an insulating material, and a PEEK (polyetheretherketone) glass fiber reinforced material can be selected.
The insulating sleeve 6, the insulating spacer ring 9 and the fixing assembly are all arranged between the end of the first joint 2 and the second joint 10. Specifically, the insulating sleeve 6 is sleeved between the first connector 2 and the second connector 10, the insulating sleeve 6 is in contact with the outer wall of the first connector 2 and the inner wall of the second connector 10, and the side surface of the insulating sleeve 6 is also in contact with the end surface of the insulating isolation sleeve 4. The insulating isolation ring 9 is formed by two parts, one part is sleeved between the first connector 2 and the second connector 10 and is contacted with the second connector 10, the other part is arranged between the first connector 2 and the third connector 12 and is contacted with the end surface of the third connector 12, and the two parts are perpendicular to each other to form the insulating isolation ring 9. And handle holes are formed in the insulating isolation ring 9 and the insulating sleeve 6, so that the parts can be conveniently detached.
The insulating shell 3, the insulating isolation sleeve 4, the insulating sleeve 6 and the insulating isolation ring 9 jointly form insulating isolation between the first joint 2 and the second joint 10 and between the first joint 2 and the third joint 12, and the insulating shell 3, the insulating isolation sleeve 4, the insulating sleeve 6 and the insulating isolation ring 9 are made of PEEK glass fiber reinforced materials serving as insulators. The PEEK glass fiber reinforced material can ensure that the resistance value of each insulator is more than 500M omega, and ensures good insulating property. Simultaneously, the PEEK glass fiber reinforced material is a high-strength non-metal insulating material, has toughness and rigidity, and can enable the insulating short section to have better compression and tensile properties by adopting smaller thickness when the insulating short section is manufactured, so that the insulating short section with smaller diameter can be manufactured and applied to well logging of an open hole well, the well logging efficiency is improved, and the occurrence rate of accidents such as well condition collapse is reduced. In addition, the PEEK glass fiber reinforced material has better hydrogen sulfide corrosion resistance and can be applied to high-sulfur-content well sites; the PEEK glass fiber reinforced material also has high temperature and high pressure resistance, and can be applied to high temperature and high pressure environments; the application of the PEEK glass fiber reinforced material enables the instrument to have wider well condition applicability.
The fixing assembly is arranged between the end of the first connector 2 and the insulating spacer ring 9 to achieve fixing of the first connector 2. Further, the fixing assembly includes a fixing ring 7 and a lock nut 8. Wherein, solid fixed ring 7 cover is established between first joint 2 and insulating spacer ring 9 to the terminal surface of the one end of solid fixed ring 7 contacts with insulating cover 6, and the other end of solid fixed ring 7 extends second joint 2. One end of the locking nut 8 is inserted into the end part of the fixing ring 7 extending out of the first joint 2 to lock and fix the first joint 2 and the fixing ring 7, and the end face of the other end of the locking nut 8 is in contact with the insulating isolating ring 9 at the end part of the third joint 12.
The first ferrule 1 is embedded in the end of the first connector 2 remote from the second connector 10, and the first ferrule 1 may be a 10-core pressure socket. The second ferrule 11 is embedded in the end of the third connector 12 remote from the second connector 10, and the second ferrule 11 may be a 10-core unpressurized socket. Because the second ferrule 11 is in a non-pressure-bearing type, a protective sleeve of the second ferrule 11 is arranged between the second ferrule 11 and the third joint 12 to prevent the second ferrule 11 from being damaged when being subjected to large pressure; sealing rings are arranged between the protective sleeve and the third joint 12 and between the second ferrule 11 and the protective sleeve. The first ferrule 1 and the second ferrule 11 are connected through a through wire, the through wire penetrates through the centers of the first connector 2, the locking nut 8, the insulating isolation ring 9, the second connector 10 and the third connector 12, therefore, the interiors of the first connector 2, the second connector 10 and the third connector 12 are hollow, the locking nut 8 is hollow, and the insulating isolation ring 9 is provided with a small hole along the center line of the instrument so that the through wire can penetrate through the small hole.
The diameter of the gap sub of this embodiment can be less than or equal to 43mm, wherein, the joint of first joint 2, second joint 10 and third joint 12 all possesses unsmooth outer wall surface to make the three form the smooth gap sub of outer wall surface after cup jointing in proper order, consequently, the diameter of first joint 2, second joint 10 and third joint 12 all is less than or equal to 43mm, and the biggest department of diameter of first joint 2, second joint 10 and third joint 12 is 43mm promptly. The small-diameter insulating short section can be used for logging through a drill pipe, a well and a drill bit water hole, so that the logging steps and the logging process are simplified; and the structure is compact, the maintenance is easy, and the reliability is high.
Furthermore, both ends of the gap sub are respectively provided with a protective cap 13 and a plug 14. Wherein, the helmet cup joints on the tip of keeping away from the second joint of first joint 2 through the screw thread pull ring, and is provided with the sealing washer between helmet 13 and the first joint 2. The plug 14 is embedded in the end of the third joint 12 far from the second joint 10, and a sealing ring is arranged between the plug and the third joint 12.
The utility model discloses the working process of the insulating nipple joint of minor diameter does:
before logging, the protective cap 13 and the plug 14 are disassembled; the first joint 2, the second joint 10 and the third joint 12 are connected with up-and-down matched instruments, and the insulating short section realizes the insulation isolation between the instrument connected with the first joint 2 and the instrument connected with the second joint 10 and between the instrument connected with the first joint 2 and the instrument connected with the third joint 12; then connecting the well-connected instrument with other instruments of the combined logging, and finally connecting the well-connected instrument with a cable; after the instrument is connected, the pressure is applied through a mud pump, the instrument is conveyed to a preset well logging position, the cable head is disconnected with the instrument string, and a drill rod is lifted up for well logging. And after the well logging is finished, pressurizing through a slurry pump, conveying the cable head to the position of the instrument, lifting the cable, and taking the instrument out of the drill rod to finish the well logging.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (9)
1. A small-diameter insulating short section is characterized by comprising a first ferrule (1), a first joint (2), a second joint (10), a third joint (12), a second ferrule (11), an insulating shell (3), an insulating spacer sleeve (4), an insulating sleeve (6), an insulating spacer ring (9) and a fixing component, wherein,
the end part of the second joint (10) is sleeved on the end part of the first joint (2);
the end part of the second joint (10) far away from the first joint (2) is sleeved on the end part of the third joint (12);
the insulating shell (3) is sleeved on the outer wall of the first connector (2) and the end part of the second connector (10);
the insulating isolation sleeve (4) is sleeved between the first joint (2) and the second joint (10) and is in contact with the insulating shell (3) and the outer wall of the first joint (2);
the insulating sleeve (6) is sleeved between the first connector (2) and the second connector (10) and is in contact with the insulating isolation sleeve (4);
one part of the insulating isolating ring (9) is sleeved between the first joint (2) and the second joint (10) and is in contact with the second joint (10), and the other part of the insulating isolating ring is arranged between the second joint (10) and the third joint (12) and is in contact with the third joint (12);
the fixing assembly is arranged between the end of the first joint (2) and the insulating isolating ring (9);
the insulating shell (3), the insulating isolation sleeve (4), the insulating sleeve (6) and the insulating isolation ring (9) are all made of PEEK glass fiber reinforced materials;
the first ferrule (1) is embedded in the end of the first connector (2) far away from the second connector (10);
the second ferrule (11) is embedded in the end of the third joint (12) far away from the second joint (10);
the first ferrule (1) and the second ferrule (11) are connected by a through wire, and the through wire penetrates through the first joint (2), the second joint (10) and the third joint (12).
2. The small-diameter gap sub according to claim 1, characterized in that the resistances of the insulating housing (3), the insulating spacer sleeve (4), the insulating sleeve (6) and the insulating spacer ring (9) are all greater than 500 Μ Ω.
3. The small-diameter gap sub according to claim 1, characterized in that the side wall of the first joint (2) contacting the insulating housing (3) and the second joint (10) form a concave surface, the side of the insulating housing (3) contacting the first joint (2) has a convex surface, and the concave surface and the convex surface of the insulating housing (3) are matched with each other.
4. The small-diameter gap sub according to claim 1, characterized in that the fixing component comprises a fixing ring (7), the fixing ring (7) is sleeved between the insulating isolation ring (9) and the end of the first joint (2) and one end of the fixing ring is in contact with the insulating sleeve (6), and the other end of the fixing ring (7) extends out of the first joint (2).
5. The small-diameter gap sub according to claim 4, characterized in that the fixing assembly further comprises a lock nut (8), one end of the lock nut (8) is inserted into the end of the fixing ring (7) extending out of the first joint (2), and the other end is in contact with the insulating spacer ring (9).
6. The small-diameter gap sub according to claim 1, further comprising an anti-rotation pin (5), wherein the anti-rotation pin (5) passes through the insulating spacer sleeve (4) to be connected with the first joint (2) and the second joint (10).
7. The small-diameter gap sub according to claim 6, characterized in that the anti-rotation pin (5) is made of insulating material.
8. The small-diameter gap sub according to claim 1, further comprising a protective cap (13) and a choke plug (14), wherein the protective cap (13) is sleeved on the end of the first joint (2) far away from the second joint (10), and the choke plug (14) is embedded in the end of the third joint (12) far away from the second joint (10).
9. The small diameter gap sub of claim 1, characterized in that the diameters of the first joint (2), the second joint (10) and the third joint (12) are all less than or equal to 43 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921213544.0U CN210460630U (en) | 2019-07-30 | 2019-07-30 | Small-diameter insulation short joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921213544.0U CN210460630U (en) | 2019-07-30 | 2019-07-30 | Small-diameter insulation short joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460630U true CN210460630U (en) | 2020-05-05 |
Family
ID=70448565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921213544.0U Active CN210460630U (en) | 2019-07-30 | 2019-07-30 | Small-diameter insulation short joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210460630U (en) |
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2019
- 2019-07-30 CN CN201921213544.0U patent/CN210460630U/en active Active
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