Well logging cable centralizing seat clamp

Abstract

The utility model discloses a logging cable centralizing seat clamp which comprises two semicircular discs spliced into a disc, a fixing plate is fixed to the splicing position, close to one side, of the outer surfaces of the two semicircular discs, and a mounting plate is fixed to the splicing position, close to the other side, of the outer surfaces of the two semicircular discs. The splicing positions of the outer surfaces of the two semicircular discs are each provided with a first through hole penetrating through the two faces, the two first through holes are oppositely formed, shaft rods are fixed to the first through holes in the diameter direction of the semicircular discs, the two ends of the shaft rods are correspondingly fixed to the portions, on the two sides of the first through holes, of the semicircular discs, and the shaft rods are sleeved with rolling wheels located on the first through holes. The diameters of the two ends of the roller are larger than the diameter of the middle of the roller. A positioning cylinder is fixed to the faces, away from the shaft rod, of the two semicircular discs. The logging cable centralizing seat clamp is simple in structure, low in manufacturing cost and convenient to mount and dismount, friction between a logging cable and a simulation well can be well avoided, and the service life of the logging cable and the service life of the simulation well are prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of well logging equipment and relates to a well logging cable straightening and sitting clamp. Background Art

[0002] When the simulation well derrick is established, the radius of the top pulley is usually not considered in the connection between the top pulley and the wellhead of the simulation well, which causes the logging cable connected to the downhole instrument to rub against the simulation well during subsequent use. This has the following disadvantages: First, the logging cable is severely worn, reducing the cable life; second, the wall of the simulation well is severely worn, reducing the service life of the simulation well; third, there are safety hazards, which may cause the cable to break and cause the instrument to fall into the well. After the instrument falls into the well, not only must the instrument be salvaged, but the simulation well must also be re-marked. In addition, the logging cable must also be replaced. The instrument salvage will also cause serious damage to the simulation well. At present, there is still a lack of effective means to solve the problem of easy friction between the logging cable and the simulation well. Utility Model Content

[0003] The utility model aims to provide a logging cable straightening and seating clamp, which solves the problem in the prior art that the logging cable easily generates friction with the simulation well.

[0004] The technical solution adopted by the present invention is that the logging cable straightening seat clamp comprises two semi-circular discs spliced into a disc, a fixing plate is fixed together at the splicing part near one side on the outer surfaces of the two semi-circular discs, and a mounting plate is fixed together at the splicing part near the other side, a first through hole penetrating the two surfaces is respectively opened at the splicing part of the outer surfaces of the two semi-circular discs, and the two first through holes are arranged opposite to each other, an axle is fixed on the first through hole along the diameter direction of the semi-circular disc, and the two ends of the axle are correspondingly fixed on the semi-circular discs on both sides of the first through hole, a roller is sleeved on the axle and the roller is located on the first through hole, the diameter of the two ends of the roller is larger than the diameter in the middle, and a positioning cylinder is fixed together on the surfaces of the two semi-circular discs away from the axle.

[0005] The utility model of the logging cable righting clamp is also characterized by:

[0006] A fixing pin is provided through the fixing plate and the two semi-circular discs.

[0007] A latch is detachably provided through the mounting plate and the two semi-circular discs.

[0008] A second through hole is provided on the latch, one end of a chain is fixed on the surface where the fixing plate is located on one of the semicircular disks, and the other end of the chain is fixed on the second through hole.

[0009] A third through hole is respectively opened on the shaft rod near both ends, a bolt is arranged through the third through hole and the semi-circular disk, and nuts are fixed at both ends of the bolt.

[0010] The outer diameter of the positioning cylinder is smaller than the diameter of the semi-circular disk.

[0011] A handle is fixedly connected to the surface of the semicircular disk where the fixed plate is located.

[0012] The beneficial effects of the utility model are:

[0013] Compared with the existing technology, the utility model has a simple structure of the logging cable straightening clamp, low manufacturing cost, convenient installation and disassembly, strong and durable, and can effectively avoid the friction between the logging cable and the simulation well, thereby extending the service life of the logging cable and the simulation well; the roller rotates freely, and the logging cable can run in the middle of the roller; the positioning cylinder can ensure that the logging cable straightening clamp shakes very little during operation, and in the case of misoperation, the downhole instrument can easily bring the wellhead clamp out of the wellhead through the logging cable, without getting the downhole instrument stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a top view of the utility model logging cable uprighting clamp;

[0015] Figure 2 It is a main view of the utility model of the logging cable righting and seating clamp.

[0016] In the figure, 1. semicircular disk, 2. fixing plate, 3. mounting plate, 4. first through hole, 5. shaft, 6. bolt, 7. roller, 8. fixing pin, 9. latch, 10. chain, 11. positioning cylinder, 12. second through hole, 13. nut, 14. third through hole, 15. handle. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Logging cable uprighting clamp, refer to Figure 1 , including two semi-circular discs 1 spliced into a disc, the semi-circular disc 1 is made of steel plate, which is strong, durable and not easy to damage. A fixing plate 2 is fixed to the joint near one side of the outer surface of the two semi-circular discs 1, and a mounting plate 3 is fixed to the joint near the other side. A first through hole 4 is opened at the joint of the outer surfaces of the two semi-circular discs 1, and the two first through holes 4 are arranged opposite to each other. A shaft rod 5 is fixed on the first through hole 4 along the diameter direction of the semi-circular disc 1, and the two ends of the shaft rod 5 are correspondingly fixed on the semi-circular discs 1 on both sides of the first through hole 4. A roller 7 is sleeved on the shaft rod 5 and the roller 7 is located on the first through hole 4. The diameter of the two ends of the roller 7 is larger than the diameter in the middle. The roller 7 is made of nylon. When the roller 7 is worn or the shaft rod 5 is deformed, it can be removed. The cost is low. The roller 7 rotates freely, so that the logging cable can run in the middle of the roller 7. Figure 2A positioning cylinder 11 is fixed on the surface of the two semi-circular disks 1 away from the shaft 5. The positioning cylinder 11 can reduce the shaking amplitude of the logging cable during the operation. Figure 1 , a fixing pin 8 is provided through the fixing plate 2 and the two semi-circular discs 1, and a removable latch 9 is provided through the mounting plate 3 and the two semi-circular discs 1 to facilitate the disassembly and assembly of the two semi-circular discs 1, refer to Figure 2 A second through hole 12 is provided on the latch 9, one end of a chain 10 is fixed to the surface where the fixing plate 2 is located on one of the semicircular disks 1, and the other end of the chain 10 is fixed to the second through hole 12, referring to Figure 1 A third through hole 14 is provided on the shaft 5 near both ends, and a bolt 6 is provided through the third through hole 14 and the semi-circular disk 1. Nuts 13 are fixed at both ends of the bolt 6. The outer diameter of the positioning cylinder 11 is smaller than the diameter of the semi-circular disk 1. A handle 15 is fixed on the surface of the semi-circular disk 1 where the fixing plate 2 is located. The handle 15 can be used to easily straighten and lift the logging cable.

[0019] The utility model is easy to manufacture and has low cost. The manufacturing method is as follows:

[0020] Step 1: Prepare two semicircular steel plates and cut a hole at the joint of the two steel plates;

[0021] Step 2: Prepare two nylon rollers 7. The diameters of the rollers 7 at both ends should be larger than the diameter in the middle. Place the rollers 7 into the two holes respectively. Insert the shaft 5 from the center of the two ends of the rollers 7. Drill holes near the ends of the shaft 5. Fix the shaft 5 to the steel plate with bolts 6 to make the cable guide pulley.

[0022] Step 3: Splice the two steel plates together, ensuring that the centers of the two rollers 7 are aligned to form a seat disc. Weld a fixing plate 2 near one end of the joint and secure it with a fixing pin 8. Weld a mounting plate 3 near the other end of the joint and secure it with a removable latch 9. When the latch 9 is inserted, the two steel plates merge into the seat disc. When the latch 9 is pulled out, the seat disc can be opened.

[0023] Step 4: Weld a chain 10 on the surface of the seat plate where the fixed plate 2 is located, and punch a hole on the latch 9. When the latch 9 is inserted, the chain 10 can buckle the latch 9 to prevent it from slipping;

[0024] Step 5: Prepare two steel bars, make two arc-shaped handles 15 and weld them to two steel plates respectively;

[0025] Step 6: Prepare a steel cylinder with an outer diameter that matches the inner diameter of the simulated well and is smaller than the diameter of the steel plate. Weld the steel cylinder to the surface of the seat away from the shaft 5, and the logging cable straightening and seating clamp is completed.

[0026] When in use, the downhole instrument is suspended by the logging cable and lowered into the simulated well. The two steel plates are opened by the latch 9, the logging cable is placed between the two rollers 7, the two steel plates are merged, the steel cylinder is placed in the simulated well, and the steel plate is placed on the wellhead.

[0027] Example 1:

[0028] The two ends of the cam 5 are fixed on the two sides of the cam 5, and the two ends of the cam 5 are fixed on the two sides of the cam 5.

[0029] Example 2:

[0030] The logging cable straightening seat clamp comprises two semi-circular discs 1 spliced into a disc, a fixing plate 2 is fixed to the joint near one side of the outer surface of the two semi-circular discs 1, and a mounting plate 3 is fixed to the joint near the other side. The joint of the outer surface of the two semi-circular discs 1 is provided with a first through hole 4 that passes through the two surfaces and the two first through holes 4 are arranged opposite to each other. A shaft 5 is fixed on the first through hole 4 along the diameter direction of the semi-circular disc 1 and the two ends of the shaft 5 are fixed to the semi-circular discs 1 on both sides of the first through hole 4. The upper sleeve is provided with a roller 7 and the roller 7 is located on the first through hole 4. The diameters at both ends of the roller 7 are larger than the diameter in the middle. A positioning cylinder 11 is fixed to the surfaces of the two semi-circular disks 1 away from the shaft 5. A fixing pin 8 is provided through the fixed plate 2 and the two semi-circular disks 1. A latch 9 is detachably provided through the mounting plate 3 and the two semi-circular disks 1. A second through hole 12 is provided on the latch 9. One end of a chain 10 is fixed to the surface of the fixed plate 2 on one of the semi-circular disks 1, and the other end of the chain 10 is fixed to the second through hole 12.

[0031] Example 3:

[0032] The two ends of the bolt 6 are fixed with a nut 13 on each end of the shaft, and a plurality of bolts 13 are installed on the two ends of the shaft to form a circle.

[0033] Example 4:

[0034] The logging cable straightening seat clamp comprises two semi-circular discs 1 spliced into a disc, a fixing plate 2 is fixed to the joint near one side of the outer surface of the two semi-circular discs 1, and a mounting plate 3 is fixed to the joint near the other side. The joint of the outer surface of the two semi-circular discs 1 is provided with a first through hole 4 that passes through the two surfaces and the two first through holes 4 are arranged opposite to each other. A shaft rod 5 is fixed on the first through hole 4 along the diameter direction of the semi-circular disc 1 and the two ends of the shaft rod 5 are fixed to the semi-circular discs 1 on both sides of the first through hole 4. 5 is sleeved with a roller 7 and the roller 7 is located on the first through hole 4. The diameters of the two ends of the roller 7 are larger than the diameter in the middle. A positioning cylinder 11 is fixed to the surfaces of the two semi-circular disks 1 away from the shaft 5. A latch 9 is detachably provided through the mounting plate 3 and the two semi-circular disks 1. A second through hole 12 is provided on the latch 9. One end of a chain 10 is fixed to the surface where the fixing plate 2 is located on one of the semi-circular disks 1, and the other end of the chain 10 is fixed to the second through hole 12. A handle 15 is fixed to the surface where the fixing plate 2 is located on the semi-circular disk 1.

[0035] Example 5:

[0036] The well logging cable straightening seat clamp comprises two semi-circular discs 1 spliced into a disc, and a fixing plate 2 is commonly fixed at the splicing position near one side on the outer surface of the two semi-circular discs 1, and a mounting plate 3 is commonly fixed at the splicing position near the other side. The splicing position of the outer surface of the two semi-circular discs 1 is respectively provided with a first through hole 4 penetrating the two surfaces, and the two first through holes 4 are arranged oppositely. An axle rod 5 is fixed on the first through hole 4 along the diameter direction of the semi-circular disc 1, and the two ends of the axle rod 5 are correspondingly fixed on the semi-circular discs 1 on both sides of the first through hole 4. A roller 7 is sleeved on the axle rod 5, and the roller 7 is located on the first through hole 4. The diameter of the two ends of the roller 7 is larger than the diameter in the middle. A positioning cylinder 11 is commonly fixed on the surface of the two semi-circular discs 1 away from the axle rod 5, and a third through hole 14 is respectively provided on the axle rod 5 near the two ends. Bolts 6 are provided through the third through hole 14 and the semi-circular disc 1, and nuts 13 are fixed at both ends of the bolt 6. The outer diameter of the positioning cylinder 11 is smaller than the diameter of the semi-circular disc 1, and a handle 15 is fixed on the surface where the fixing plate 2 is located on the semi-circular disc 1.

Claims

1. Logging cable straightening and sitting clamp, characterized by: The invention comprises two semi-circular disks (1) spliced into a disc, a fixing plate (2) is fixed to the joint near one side of the outer surface of the two semi-circular disks (1), and a mounting plate (3) is fixed to the joint near the other side, a first through hole (4) penetrating the two surfaces is respectively opened at the joint of the outer surface of the two semi-circular disks (1), and the two first through holes (4) are arranged opposite to each other, a shaft (5) is fixed on the first through hole (4) along the diameter direction of the semi-circular disk (1), and the two ends of the shaft (5) are correspondingly fixed to the semi-circular disks (1) on both sides of the first through hole (4), a roller (7) is sleeved on the shaft (5), and the roller (7) is located on the first through hole (4), the diameters of the two ends of the roller (7) are larger than the diameter in the middle, and a positioning cylinder (11) is fixed to the surface of the two semi-circular disks (1) away from the shaft (5).

2. The logging cable straightening clamp according to claim 1, characterized in that: A fixing pin (8) is provided through the fixing plate (2) and the two semi-circular discs (1).

3. The logging cable straightening clamp according to claim 1, characterized in that: A latch (9) is detachably provided through the mounting plate (3) and the two semi-circular discs (1).

4. The logging cable straightening clamp according to claim 3, characterized in that: A second through hole (12) is provided on the latch (9), one end of a chain (10) is fixed to the surface of the fixing plate (2) on one of the semicircular disks (1), and the other end of the chain (10) is fixed to the second through hole (12).

5. The logging cable straightening clamp according to claim 1, characterized in that: A third through hole (14) is provided on each of the two ends of the shaft (5), a bolt (6) is provided through the third through hole (14) and the semi-circular disk (1), and nuts (13) are fixed at both ends of the bolt (6).

6. The logging cable righting clamp according to claim 1, characterized in that: The outer diameter of the positioning cylinder (11) is smaller than the diameter of the semi-circular disk (1).

7. The logging cable straightening clamp according to any one of claims 1 to 6, characterized in that: A handle (15) is fixedly connected to the surface of the semi-circular disk (1) where the fixing plate (2) is located.

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