Insulating nipple for well logging

Abstract

The utility model relates to the field of insulating pup joints, in particular to an insulating pup joint for well logging, which comprises a first connecting semi-ring and a second connecting semi-ring, fixing grooves are arranged on outer walls of two ends of the first connecting semi-ring and the second connecting semi-ring, and connecting threaded grooves are arranged at two ends of the first connecting semi-ring and the second connecting semi-ring. The first connecting half ring and the second connecting half ring are respectively provided with a replacement structure and a connecting assembly at the fixing groove and the connecting thread groove. The replacement structure comprises insulating grooves formed in the centers of the outer walls of the first connecting semi-ring and the second connecting semi-ring, and fixing thread grooves formed in fixing grooves in one ends of the first connecting semi-ring and the second connecting semi-ring at equal intervals. The positioning screws are inserted into the positioning hole grooves and are in threaded connection with the positioning thread grooves in the first connecting semi-ring and the second connecting semi-ring to fix the connecting rings, the situation that after combination, the connecting rings are rotated by external force, and consequently combination disengagement is caused is avoided, combination, connection and disassembly are convenient, and stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of insulating nipple, especially to the insulating nipple for well logging. BACKGROUND

[0002] The insulating nipple is a nipple for connecting a string of petroleum logging instruments, and can provide high-quality output and input signals when the string of instrument casings is insulated from each other and the internal wires do not interfere with each other when transmitting signals.

[0003] The current insulating nipple is prone to wear and tear in the working environment, which results in poor insulation effect, and the insulating shell of the current insulating nipple cannot be replaced, which makes the disassembly complex during maintenance, shortens the service life of the insulating nipple, and increases the use cost. SUMMARY

[0004] The utility model aims at the above -mentioned problem and insufficient, proposes insulating nipple for well logging: fixed screw is screwed in fixed screw thread groove after passing through the insert piece, the fixed screw is fixed to the insert piece, and the insulating sheet is fixed in the fixed groove and the insulating groove, which is convenient for installing, replacing and disassembling and assembling, and solves the problems of inconvenient replacement and disassembly after wear and tear.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The insulating nipple for well logging comprises a connecting half ring one and a connecting half ring two, the outer walls of the two ends of the connecting half ring one and the connecting half ring two are provided with fixed grooves, the two ends of the connecting half ring one and the connecting half ring two are provided with connecting screw thread grooves, the connecting half ring one and the connecting half ring two are respectively provided with replacement structures and connecting assemblies at the fixed grooves and the connecting screw thread grooves, the replacement structure comprises an insulating groove provided at the center of the outer wall of the connecting half ring one and the connecting half ring two, fixed screw thread grooves equidistantly provided in the fixed grooves of one end of the connecting half ring one and the connecting half ring two, an insulating sheet wound around the outer wall of the insulating groove, and an insert groove provided at the fixed groove at the fixed screw thread groove.

[0007] Preferably, the outer wall of the insulating sheet is provided with an insert hole at the insert groove, and the insert hole and the inner wall of the insert groove are slidably connected with an insert piece, and the two ends of the insulating sheet are stacked on the outer wall of the fixed groove.

[0008] Preferably, the inner wall of the fixed screw thread groove is threadedly connected with a fixed screw, the other end of the fixed screw is in contact with the outer wall of one end of the insert piece, and the outer wall of one side of the insert piece is pressed against the outer wall of the insulating sheet.

[0009] Preferably, the connecting assembly comprises a connecting ring threadedly connected in the connecting screw thread grooves of the two ends of the connecting half ring one and the connecting half ring two, and a positioning screw thread groove provided at the center of the fixed groove of the two ends of the connecting half ring one and the connecting half ring two.

[0010] Preferably, the outer wall of the connecting ring is provided with equidistantly distributed positioning hole grooves at the positioning thread grooves, and a positioning screw is threadedly connected in the positioning hole grooves.

[0011] Preferably, the outer wall of the connecting ring is provided with equidistantly distributed anti-skid protrusions, and rubber pads are bonded to the inner walls of the connecting half ring one and the connecting half ring two.

[0012] Preferably, the connecting half ring one and the connecting half ring two are respectively provided with connecting protrusions and connecting grooves at the two ends thereof, and the connecting protrusions and the connecting grooves are mutually adapted.

[0013] The utility model discloses the beneficial effects are:

[0014] 1, the fixed screw is screwed in the fixed thread groove after passing through the insert piece, and the fixed screw fixes the insert piece to fix the insulating sheet in the fixed groove and the insulating groove, which facilitates the installation of the insulating sheet, the replacement and the disassembly and combination.

[0015] 2, the rotating connecting ring is combined with the two circular tubes, the positioning screw is inserted into the positioning hole groove and is screwed in the positioning thread groove in the connecting half ring one and the connecting half ring two, the connecting ring is fixed, the combined falling off caused by the external force rotation of the connecting ring after combination is avoided, and the combination, the connection and the disassembly are facilitated, and the stability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model discloses the whole structure schematic diagram of insulating nipple for well logging that is proposed is shown in the figure.

[0017] Figure 2 The connecting ring structure schematic diagram of insulating nipple for well logging that is proposed by the utility model is shown in the figure.

[0018] Figure 3 The insulating sheet structure schematic diagram of insulating nipple for well logging that is proposed by the utility model is shown in the figure.

[0019] Figure 4 The connecting half ring one unfolding structure schematic diagram of insulating nipple for well logging that is proposed by the utility model is shown in the figure.

[0020] Figure 5 The fixed thread groove and the insert groove cross section structure schematic diagram of insulating nipple for well logging that is proposed by the utility model is shown in the figure.

[0021] In the figure: 1 connecting half ring one, 2 connecting half ring two, 3 fixed groove, 4 connecting threaded groove, 5 rubber pad, 6 replacement structure, 7 connecting assembly, 8 positioning threaded groove, 9 connecting ring, 10 positioning hole groove, 11 positioning screw, 12 insulation groove, 13 fixed threaded groove, 14 insertion groove, 15 insulation sheet, 16 insertion hole, 17 insertion piece, 18 fixing screw, 19 connecting protrusion, 20 connecting groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] Embodiment 1

[0024] Referring to Figures 1-4 , the well logging insulation nipple comprises connecting half ring one 1 and connecting half ring two 2, fixed grooves 3 are formed in the outer walls of the two ends of the connecting half ring one 1 and the connecting half ring two 2, and connecting threaded grooves 4 are formed in the two ends of the connecting half ring one 1 and the connecting half ring two 2, and the connecting half ring one 1 and the connecting half ring two 2 are respectively provided with a replacement structure 6 and a connecting assembly 7 at the fixed grooves 3 and the connecting threaded grooves 4;

[0025] The connecting half ring one 1 and the connecting half ring two 2 are respectively provided with a connecting protrusion 19 and a connecting groove 20 at the two ends of the connecting half ring one 1 and the connecting half ring two 2, and the connecting protrusion 19 and the connecting groove 20 are matched with each other;

[0026] The connecting assembly 7 comprises a connecting ring 9 threaded in the connecting threaded grooves 4 at the two ends of the connecting half ring one 1 and the connecting half ring two 2 and a positioning threaded groove 8 formed at the center of the fixed grooves 3 at the two ends of the connecting half ring one 1 and the connecting half ring two 2, the connecting threaded grooves 4 at the two ends of the connecting half ring one 1 and the connecting half ring two 2 are screwed with the connecting ring 9 to combine and connect the two groups of connecting half ring one 1, the positioning screw 11 is screwed into the positioning threaded groove 8 to fix the connecting ring 9, the stability of the connection is improved, and the connecting ring 9 is prevented from rotating, thereby facilitating the connection;

[0027] The outer wall of the connecting ring 9 is provided with equidistantly distributed positioning hole grooves 10 at the positioning threaded groove 8, and the positioning screw 11 is threaded in the positioning hole grooves 10, and the other end of the positioning screw 11 is screwed in the inner wall of the positioning threaded groove 8, the connecting ring 9 is screwed in the connecting threaded groove 4 to cooperate with the insulation sheet 15 to fix the adhesion of the connecting half ring one 1 and the connecting half ring two 2 around the outer wall of the insulation groove 12 and the rubber pad 5, thereby improving the stability and accuracy of the combination of the connecting half ring one 1 and the connecting half ring two 2;

[0028] The outer wall of the connecting ring 9 is provided with anti-skid protrusions distributed at equal distances, and the inner walls of the connecting half ring one 1 and the connecting half ring two 2 are bonded with rubber pads 5. The positioning screw 11 is inserted into the positioning hole slot 10 and screwed into the positioning threaded slot 8 in the connecting half ring one 1 and the connecting half ring two 2 to fix the connecting ring 9, so as to avoid the disassembly of the combination due to the rotation of the connecting ring 9 caused by external force.

[0029] Embodiment 2:

[0030] With reference to Figures 1-5 The replacement structure 6 includes an insulating slot 12 opened at the center of the outer wall of the connecting half ring one 1 and the connecting half ring two 2, equidistantly opened fixing threaded slots 13 in the fixing slots 3 at one end of the connecting half ring one 1 and the connecting half ring two 2, an insulating sheet 15 wound around the outer wall of the insulating slot 12, and a plug-in slot 14 opened at the fixing slot 3 located at the fixing threaded slot 13;

[0031] The outer wall of the insulating sheet 15 is provided with a plug-in hole 16 at the plug-in slot 14, and the plug-in hole 16 and the inner wall of the plug-in slot 14 are slidably connected with a plug-in piece 17. The two ends of the insulating sheet 15 are overlapped on the outer wall of the fixing slot 3. The fixing threaded slots 13 and the plug-in slots 14 in the connecting half ring one 1 and the connecting half ring two 2 cooperate with the fixing screws 18 and the plug-in pieces 17 to fix the two ends and the middle part of the insulating sheet 15. Loosening the fixing screws 18 can take out the plug-in pieces 17 and the insulating sheet 15 from the insulating slot 12, which is convenient for installing the easily-worn insulating sheet 15 and fixing the insulating sheet 15.

[0032] The inner wall of the fixing threaded slot 13 is threadedly connected with the fixing screw 18, and the other end of the fixing screw 18 is in contact with the outer wall of one end of the plug-in piece 17. The outer wall of one side of the plug-in piece 17 is pressed against the outer wall of the insulating sheet 15.

[0033] Working principle: when using, the whole is assembled, the connecting convex 19 and the connecting groove 20 at both ends of the connecting half ring one 1 and the connecting half ring two 2 are aligned and combined, the connecting half ring one 1 and the connecting half ring two 2 form a circular pipe, the connecting ring 9 is screwed at both ends of the connecting half ring one 1 and the connecting half ring two 2 through the connecting threaded groove 4, the assembled circular pipe is fixed, then one end of the insulating sheet 15 is pressed in the fixed groove 3 and the insertion hole 16 is aligned with the insertion groove 14, then the insulating sheet 15 is wound in the insulating groove 12 of the outer wall of the connecting half ring one 1 and the connecting half ring two 2, the insertion piece 17 is inserted in the insertion groove 14 after passing through the insertion hole 16 after the both ends of the insulating sheet 15 coincide, and the fixing screw 18 is screwed in the fixed threaded groove 13 after passing through the insertion piece 17, the fixing screw 18 fixes the insertion piece 17 to fix the insulating sheet 15 in the fixed groove 3 and the insulating groove 12, finally the rubber pad 5 is bonded on the inner wall of the connecting half ring one 1 and the connecting half ring two 2, the joint of the connecting half ring one 1 and the connecting half ring two 2 is sealed, the connecting half ring one 1 and the connecting half ring two 2 are further fixed, the other connecting half ring one 1 and the connecting half ring two 2 form a circular pipe and are placed at both ends, the connecting ring 9 is rotated so that the connecting ring 9 enters half of the connecting threaded groove 4, the two circular pipes are combined, the positioning screw 11 is inserted into the positioning hole groove 10 and screwed into the positioning threaded groove 8 in the connecting half ring one 1 and the connecting half ring two 2, and the connecting ring 9 is fixed to avoid the combined connecting ring 9 from being rotated by external force and causing the combination to fall off.

[0034] The exemplary embodiments of the present application are described in detail in the specification with reference to the drawings. It is understood by those skilled in the art that various modifications and changes can be made to the above-described specific embodiments without departing from the spirit of the present application, and various combinations of the technical features and structures proposed in the present application can be made without exceeding the scope of the present application, and the scope of protection of the present application is determined by the appended claims. The foregoing description of the specific exemplary embodiments of the present application is not intended to limit the present application to the precise forms disclosed, and it is obvious that many changes and modifications can be made according to the above teachings. The exemplary embodiments are selected and described for the purpose of explaining the specific principles of the present application and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present application and various different selections and modifications. The scope of the present application is intended to be limited by the claims and their equivalents.

Claims

1. An insulating short joint for well logging, comprising a connecting half ring 1 (1) and a connecting half ring 2 (2), characterized in that: The outer walls of both ends of the connecting half ring (1) and the connecting half ring (2) are provided with fixing grooves (3), and both ends of the connecting half ring (1) and the connecting half ring (2) are provided with connecting thread grooves (4), and the connecting half ring (1) and the connecting half ring (2) are respectively provided with replacement structures (6) and connecting components (7) at the fixing grooves (3) and the connecting thread grooves (4); The replacement structure (6) comprises an insulating groove (12) provided at the center of the outer wall of the connecting half ring (1) and the connecting half ring (2), a fixed thread groove (13) provided at equal distances in the fixed groove (3) at one end of the connecting half ring (1) and the connecting half ring (2), an insulating sheet (15) wound around the outer wall of the insulating groove (12), and a plug-in groove (14) provided in the fixed groove (3) at the fixed thread groove (13).

2. The insulating sub for well logging according to claim 1, characterized in that: The outer wall of the insulating sheet (15) is provided with a plug hole (16) at the plug slot (14), and the plug hole (16) and the inner wall of the plug slot (14) are slidably connected with a plug connector (17), and the two ends of the insulating sheet (15) are stacked on the outer wall of the fixing slot (3).

3. The insulating sub for well logging according to claim 1, characterized in that: The inner wall of the fixed thread groove (13) is threadedly connected with a fixing screw (18), and the other end of the fixing screw (18) contacts the outer wall of one end of the connector (17), and the outer wall of one side of the connector (17) is pressed against the outer wall of the insulating sheet (15).

4. The insulating sub for well logging according to claim 1, characterized in that: The connecting assembly (7) comprises a connecting ring (9) threadedly connected to the connecting thread grooves (4) at both ends of the connecting half ring (1) and the connecting half ring (2), and a positioning thread groove (8) provided at the center of the fixing grooves (3) at both ends of the connecting half ring (1) and the connecting half ring (2).

5. The insulating sub for well logging according to claim 4, characterized in that: The outer wall of the connecting ring (9) is provided with positioning hole grooves (10) distributed at equal distances at the positioning thread groove (8), and a positioning screw (11) is threadedly connected in the positioning hole groove (10), and the other end of the positioning screw (11) is screwed to the inner wall of the positioning thread groove (8).

6. The insulating sub for well logging according to claim 4, characterized in that: The outer wall of the connecting ring (9) is provided with anti-slip protrusions distributed at equal distances, and the inner walls of the connecting half ring (1) and the connecting half ring (2) are bonded with rubber pads (5).

7. The insulating sub for well logging according to claim 1, characterized in that: The connecting half ring 1 (1) and the connecting half ring 2 (2) are respectively provided with connecting protrusions (19) and connecting grooves (20) at two ends close to each other, and the connecting protrusions (19) and the connecting grooves (20) are adapted to each other.

Images