CN204877300U - Detachable insulating nipple joint - Google Patents

Abstract

The utility model relates to a detachable insulating pup joint, comprising an upper joint, a middle joint, a lower joint and a connecting rod with an internal cavity structure; the tail of the upper joint is connected with the front end of the connecting rod, and the outer side of the connecting rod An insulating cylinder is set on the sleeve, and the connection between the upper joint and the connecting rod is set inside the insulating cylinder; the tail end of the connecting rod is connected to the lower joint, and the middle joint is sleeved at the joint between the tail end of the connecting rod and the lower joint; the connection between the connecting rod and the lower joint An insulating magnetic ring and a pressing block are arranged between them, and an insulating component is also arranged in the middle joint. The utility model is a detachable, safe and reliable insulating short joint, which has the advantages of convenient maintenance, economical and practical, good insulation, safety and reliability.

Description

A detachable insulating pup joint

【Technical field】

The utility model belongs to the technical equipment field of oil exploration well detection, in particular to a detachable insulating short joint.

【Background technique】

At present, the insulating pup joints used in the well logging industry are two types: integral type and split type. The integral type insulating pup joint cannot be disassembled. Once the insulation layer is damaged and needs to be replaced or the insulation of the instrument is not good, the logging site cannot be operated and must be returned. Manufacturer maintenance, not only the maintenance cost is high, but also causes a lot of waste of time, affecting the smooth progress of well logging construction; currently the split type insulating pup joints commonly used in the market have problems of poor insulation and low pressure, and are only used for insulation and well logging. The application is limited in occasions where the pressure requirement is not high.

【Content of utility model】

In order to solve the problems existing in the prior art, the utility model provides a detachable, safe and reliable insulation pup joint, which has the advantages of convenient maintenance, economical and practical, good insulation, safety and reliability.

The technical scheme that this patent adopts for realizing the above-mentioned purpose is:

A detachable insulating short joint, including an upper joint, a middle joint, a lower joint and a connecting rod with an internal cavity structure; the tail of the upper joint is connected to the front end of the connecting rod, and the outer side of the connecting rod is sleeved with insulating The connection between the upper joint and the connecting rod is set inside the insulating cylinder; the tail end of the connecting rod is connected to the lower joint, and the middle joint is sleeved at the joint between the tail end of the connecting rod and the lower joint; an insulating The magnetic ring and the pressing block are also provided with insulating components in the intermediate joint.

The insulating assembly includes an insulating sleeve and a screw sleeve; one end of the insulating sleeve is sleeved on the end of the connecting rod, the other end of the insulating sleeve forms a cavity, the screw sleeve is arranged in the cavity to fix the insulating sleeve, and the insulating magnetic ring and the pressing block are arranged on the In the cavity of the insulating sleeve, and the insulating magnetic ring is in contact with the screw sleeve.

The tail end of the connecting rod is also provided with a pressure pad, the front end of the pressure pad is in contact with the tail end of the insulating cylinder, and the outer side of the pressure pad is in contact with the intermediate joint; the pressure pad is made of high-strength made of insulating material.

The tail end of the connecting rod is also provided with an anti-rotation cylindrical key, and the connecting rod and the intermediate joint are connected by the anti-rotation cylindrical key; the anti-rotation cylindrical key is made of high-strength insulating material.

The intermediate joint is covered and arranged on the outer side of the end of the insulating cylinder and the front end of the lower joint. The interior of the intermediate joint is a ladder structure, and the ladder structure matches the shape of the insulating component installed inside; both ends of the intermediate joint are provided with sealing rings.

Both ends of the insulating cylinder are provided with sealing rings.

The outer diameters of the upper joint, the insulating cylinder, the middle joint and the lower joint are consistent.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model is a detachable, safe and reliable insulating pup joint, which is composed of a detachably connected upper joint, an intermediate joint, a lower joint and a connecting rod, which is convenient for assembly and disassembly; The barrel is used to isolate the upper joint and the lower joint of the instrument, so that it can meet the insulation requirements required for well logging. An insulating magnetic ring is installed behind the screw sleeve of the instrument to prevent the upper and lower joints of the instrument from being separated due to the undercut of the screw sleeve, resulting in logging accidents. It has the advantages of convenient maintenance, economical and practical, good insulation, safety and reliability, etc. It is used in the petroleum logging industry to isolate the upper and lower parts of the instrument so that it can meet the insulation requirements required for logging.

Furthermore, the insulation cylinder set by the instrument is made of materials with good insulation performance and poor water absorption; at the same time, it has the characteristics of high wear resistance and high strength. There are sealing rings at both ends of the insulating cylinder to ensure the sealing and insulation of the instrument.

Furthermore, the structural design of the pressure-bearing block set up by the instrument makes the axial pressure of the instrument concentrate on the pressure-bearing block. Require.

Further, the anti-rotation cylindrical key arranged at the upper joint and the middle joint of the instrument is made of high-strength insulating material to prevent the relative rotation of the upper and lower joints of the instrument, affecting the insulation of the instrument and damage to the electrical parts.

【Description of drawings】

Fig. 1 is a schematic diagram of the detachable insulating pup joint of the utility model.

Among them: 1-upper joint, 2-insulating cylinder, 3-pressure bearing block, 4-anti-rotation cylindrical key, 5-insulating sleeve, 6-screw sleeve, 7-insulating magnetic ring, 8-compression block, 9- Intermediate joint, 10-lower joint, 11-connecting rod.

【Detailed ways】

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, the utility model insulation pup joint is mainly composed of an upper joint 1, an insulation cylinder 2, a pressure pad 3, an anti-rotation cylindrical key 4, an insulation sleeve 5, a screw sleeve 6, an insulation magnetic ring 7, and a compression block 8. The middle joint 9, the lower joint 10 and the connecting rod 11 are composed. The tail of the upper joint 1 is connected with one end of the connecting rod 11, and the other end of the connecting rod 11 is connected with the lower joint 10 through the intermediate joint 9. The tail of the upper joint 1 is consistent with the diameter of the connecting rod 11 and is smaller than the diameter of the upper joint 1. The insulating tube 2 is sleeved outside the connecting rod 11, and the front end of the insulating tube 2 is also sleeved between the upper joint 1 and the connecting rod 11. The outside of the joint; the diameter of the insulating cylinder 2 is consistent with the outer diameter of the upper joint 1. The end of the connecting rod 11 is sequentially provided with a pressure pad 3, an anti-rotation cylindrical key 4, an insulating sleeve 5 and a screw sleeve 6; the pressure pad 3 is in contact with the end of the insulating cylinder 2; the end of the connecting rod 11 is also provided with Cylindrical keyway, connecting rod 11 is fixed with intermediate joint 9 by anti-rotation cylindrical key 4. The insulating sleeve 5 is fixed on the connecting rod 11 through the screw sleeve 6 . An insulating magnetic ring 7 and a pressing block 8 are arranged between the connecting rod 11 and the lower joint 10 , and the insulating sleeve 5 is sleeved on the screw sleeve 6 , the insulating magnetic ring 7 and the pressing block 8 . The intermediate joint 9 is coated on the end of the insulating cylinder 2, the pressure pad 3, the anti-rotation cylindrical key 4, the insulating sleeve 5, the threaded sleeve 6, the insulating magnetic ring 7, the pressing block 8 and the outer part of the front end of the lower joint 10. The outer diameter of the intermediate joint 9 is consistent with the outer diameters of the insulating cylinder 2 and the lower joint 10 . Inside the connecting rod 11 is a cavity for placing wires connecting the upper joint 1 and the lower joint 10 .

Wherein, each part function is as follows in the utility model:

Upper connector 1: Provides the mechanical interface and electrical interface on the upper end of the instrument. Insulation cylinder 2: isolate the upper joint 1 and the lower joint 10 of the instrument to meet the insulation requirements required for well logging. Pressure pad 3: To withstand the axial pressure between the upper joint 1 and the middle joint 9 of the instrument, protect the insulating cylinder from being squeezed, and enhance the pressure resistance of the instrument. Anti-rotation cylindrical key 4: prevent the relative rotation of the upper and lower joints of the instrument, and prevent the insulation and electrical parts of the instrument from being damaged. Insulation sleeve 5: isolate the upper connector and the lower connector of the instrument to insulate them. Screw sleeve 6: Connect the upper joint 1 and the lower joint 10 of the instrument, and bear the axial tension to provide the upper mechanical interface and electrical interface of the instrument. Insulating magnetic ring 7: Prevent the upper and lower joints of the instrument from being detached due to the undercut of the screw sleeve, resulting in logging ACCIDENT. Press block 8: fix the insulating magnetic ring 7. Intermediate joint 9: the transition between the upper and lower joints. Lower joint 10: provide the mechanical interface and electrical interface at the lower end of the instrument.

The utility model mainly relates to the insulation, pressure bearing, anti-rotation and anti-turning of the instrument. The specific implementation measures are as follows:

1) The insulation cylinder 2 installed in the instrument is made of a material with good insulation performance and poor water absorption; meanwhile, it has the characteristics of high wear resistance and high strength. Sealing rings are provided at both ends of the insulating cylinder 2 to ensure the sealing and insulation of the instrument.

2) The pressure pad 3 installed on the instrument is designed so that the axial pressure of the instrument is concentrated on the pressure pad. At the same time, the pressure pad 3 is made of high-strength insulating material, which not only meets the load-bearing requirements, but also Meet insulation requirements.

3) The anti-rotation cylindrical key 4 provided at the upper joint 1 and the middle joint 9 of the instrument is made of high-strength insulating material to prevent the relative rotation of the upper and lower joints of the instrument, affecting the insulation of the instrument and damage to the electrical parts.

4) An insulating magnetic ring 7 is installed behind the screw sleeve of the instrument to prevent the upper and lower joints of the instrument from being separated due to undercut of the screw sleeve 6, resulting in logging accidents.

When assembling, first fix the upper joint 1 and the connecting rod 11, then install the insulating cylinder 2, install the pressure pad 3, the anti-rotation cylindrical key 4, fix the middle joint 9, and then install the insulating sleeve 5 and the screw sleeve 6 in sequence , the insulating magnetic ring 7, the pressing block 8, and finally the joint 10 is fixed. For disassembly, the sequence is reversed.

The above content is a further detailed description of the utility model in conjunction with specific preferred embodiments. It cannot be determined that the specific embodiment of the utility model is limited to this. Under the premise of the new concept, some simple deduction or replacement can also be made, which should be regarded as belonging to the utility model and the patent protection scope is determined by the submitted claims.

Claims (7)

1. A detachable insulating pup joint, characterized in that it comprises an upper joint (1), an intermediate joint (9), a lower joint (10) and a connecting rod (11) of an internal cavity structure; the upper joint (1) The tail is connected to the front end of the connecting rod (11), the outer side of the connecting rod (11) is covered with an insulating tube (2), and the connection between the upper joint (1) and the connecting rod (11) is set on the insulating tube (2) inside; the tail end of the connecting rod (11) is connected with the lower joint (10), and the middle joint (9) is sleeved at the joint between the tail end of the connecting rod (11) and the lower joint (10); the connecting rod (11) is connected with the lower joint (10). An insulating magnetic ring (7) and a pressing block (8) are arranged between the lower joints (10), and an insulating assembly is also arranged in the middle joint (9). 2. A detachable insulating pup joint according to claim 1, characterized in that, the insulating assembly includes an insulating sleeve (5) and a threaded sleeve (6); one end of the insulating sleeve (5) is sleeved on the connection On the end of the rod (11), the other end of the insulating sleeve (5) forms a cavity, the screw sleeve (6) is arranged in the cavity to fix the insulating sleeve (5), and the insulating magnetic ring (7) and the pressing block (8) are arranged on the insulating In the cavity of the sleeve (5), and the insulating magnetic ring (7) is in contact with the screw sleeve (6). 3. A detachable insulating pup joint according to claim 1, characterized in that, the end of the connecting rod (11) is also provided with a pressure pad (3), and the pressure pad The front end of the block (3) is in contact with the tail end of the insulating cylinder (2), and the outer side of the pressure pad (3) is in contact with the intermediate joint (9); the pressure pad (3) is made of high-strength insulating material. 4. A detachable insulating pup joint according to claim 1, characterized in that, the tail end of the connecting rod (11) is also provided with an anti-rotation cylindrical key (4), and the connecting rod (11) and The intermediate joint (9) is connected by an anti-rotation cylindrical key (4); the anti-rotation cylindrical key (4) is made of high-strength insulating material. 5. A detachable insulating pup joint according to claim 1, characterized in that, the intermediate joint (9) is coated on the outer side of the end of the insulating cylinder (2) and the front end of the lower joint (10), The interior of the intermediate joint (9) is a ladder structure, and the ladder structure matches the shape of the insulating component arranged inside; both ends of the intermediate joint (9) are provided with sealing rings. 6. A detachable insulating pup joint according to claim 1, characterized in that, both ends of the insulating cylinder (2) are provided with sealing rings. 7. A detachable insulating pup joint according to claim 1, characterized in that, the outer joints of the upper joint (1), the insulating cylinder (2), the middle joint (9) and the lower joint (10) same diameter.