Well logging guide pulley with mud scraping device
By designing a mud scraper and an air blowing ring on the logging guide pulley, the problem of mud adhesion on the logging cable was solved, and the accuracy of logging depth was achieved. The mud was removed by using a mud scraper and high-pressure gas to ensure that the cable does not slip when moving.
Patent Information
- Application Number
- CN202520795917.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-24
AI Technical Summary
Existing logging guide pulleys lack a mud-scraping function, resulting in mud adhering to the logging cable and affecting the accuracy of logging depth.
Design a logging guide pulley with a mud scraping device, including a mud scraping component and an air blowing ring. The mud scraping component scrapes the mud off the surface of the cable with a mud scraper, and the air blowing ring further removes the mud with high-pressure gas.
Effectively prevents cable slippage and ensures accurate logging depth. The combination of a mud scraper and an air blowing ring ensures thorough removal of mud from the cable surface.
Smart Images
Figure CN223867991U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to logging tool technical field especially relates to a logging guide pulley with mud scraping device. BACKGROUND
[0002] In the horizontal well drilling tool transmission logging, the drilling tool is connected and pushes the logging instrument to send into the target layer and carries out logging operation. One end of the logging cable is connected with the logging instrument in the drilling tool, and the other end is connected with the logging ground system through the guide pulley, the sky pulley and the ground pulley.
[0003] At present, since the logging guide pulley mostly does not have the mud scraping function, causes the cable to slip and influences the accuracy of logging depth when logging, the cable is inevitably attached with a large amount of mud in the well.
[0004] Therefore, in order to solve the foregoing problem, we propose a logging guide pulley with mud scraping device. UTILITY MODEL CONTENT
[0005] The utility model aims at solving the defects in the prior art and proposes a logging guide pulley with mud scraping device.
[0006] In order to achieve the above object, the utility model adopts the following technical scheme:
[0007] A logging guide pulley with mud scraping device, including support, the inside rotation of support is installed with guide pulley, the left and right sides of support are rotatably installed with support rod, the inside of two support rods is equipped with sliding slot, two support rods are slidably installed with mud scraping parts through the sliding slot in the inside.
[0008] Further, the mud scraping part includes a cylinder, two groups of mud scraping plates are fixedly installed in the inside of the cylinder through a plurality of elastic sheets, and the two groups of mud scraping plates are installed in the inside of the cylinder from bottom to top and are arranged transversely and longitudinally.
[0009] Further, the mud scraping plate is of arc structure, the number of each group of mud scraping plates is two and they are symmetrically arranged, and each mud scraping plate is fixedly connected with the inner wall of the cylinder through two elastic sheets.
[0010] Further, the outer side of the cylinder is rotatably installed with a screw rod, and one end of the two screw rods respectively penetrates two sliding slots and is threadedly installed with a nut.
[0011] Further, the top end of the cylinder is fixedly installed with a gas blowing ring, the lower end of the inner side of the gas blowing ring is provided with an inclined surface, a plurality of gas blowing holes are equidistantly arranged in the inside of the inclined surface, the plurality of gas blowing holes are all directed to the axis of the cylinder, and the upper surface of the gas blowing ring is fixedly installed with a gas conveying pipe.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] The logging cable can be wound around the outer surface of the guide pulley after passing through the mud scraping part, the guide pulley can be fixedly installed at the required position through the support, and when the logging cable moves, the mud scraping plate of the mud scraping part can scrape off the mud attached to the surface of the cable, so that the cable slip is avoided, and the accuracy of the logging depth is affected.
[0014] And the external gas conveying equipment can input high-pressure gas into the gas blowing ring through the gas conveying pipe, and the high-pressure gas can be blown to the surface of the cable through the gas blowing hole, so that the mud is further blown off. BRIEF DESCRIPTION OF DRAWINGS
[0015] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.
[0016] Figure 1 It is the whole structure schematic diagram of the utility model;
[0017] Figure 2 It is one of the perspective views of the mud scraping part of the utility model;
[0018] Figure 3 It is the second perspective view of the mud scraping part of the utility model;
[0019] Figure 4 It is the perspective view of the gas blowing ring of the utility model.
[0020] In the drawing: 1, support; 2, guide pulley; 3, support rod; 4, sliding groove; 5, mud scraping part; 6, cylinder; 7, screw; 8, nut; 9, mud scraping plate; 10, gas blowing ring; 11, gas conveying pipe; 12, gas blowing hole. DETAILED DESCRIPTION
[0021] The technical scheme 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;
[0022] Refer to Figures 1-4 A logging guide pulley with a mud scraping device, including support 1, the inside rotation of support 1 is installed with guide pulley 2, the left and right sides of support 1 are rotationally installed with support rod 3, the inside of two support rods 3 is provided with sliding groove 4, and two support rods 3 are slidably installed with mud scraping part 5 through the inside sliding groove 4.
[0023] The logging cable can be wound around the outer surface of the guide pulley 2 after passing through the mud scraping part 5, and the guide pulley 2 can be fixedly installed on the support 1 at a desired position. When the logging cable moves, the mud scraping part 5 can scrape off the mud on the surface of the cable, so as to avoid causing the cable to slip and affecting the accuracy of the logging depth.
[0024] The mud scraping part 5 comprises a cylinder 6, and two groups of mud scraping plates 9 are fixedly installed in the interior of the cylinder 6 by a plurality of elastic sheets. The two groups of mud scraping plates 9 are installed in the interior of the cylinder 6 from bottom to top and are arranged in transverse and longitudinal staggered mode. The mud scraping plates 9 are in arc-shaped structure, the number of each group of mud scraping plates 9 is two and the two groups are arranged in symmetry, and each mud scraping plate 9 is fixedly connected with the inner wall of the cylinder 6 by two elastic sheets.
[0025] The arc-shaped mud scraping plates 9 can be well attached to the surface of the cable. After the cable moves, the mud scraping plates 9 can scrape off the mud attached to the surface of the cable, and the two groups of mud scraping plates 9 arranged in transverse and longitudinal staggered mode can more comprehensively scrape off the mud.
[0026] The elastic sheets are located on the left and right sides of the mud scraping plates 9. The elastic sheets can push the mud scraping plates 9 to move to the center of the cylinder 6, and the two elastic sheets can extrude the mud scraping plates 9 from both sides, so that the two sides of the mud scraping plates 9 are deformed to the center, so that a single mud scraping plate 9 can be clamped on the surface of the cable, the attachment area of the mud scraping plates 9 and the cable is increased, and the mud scraping plates 9 can adapt to cables of different thicknesses.
[0027] The cylinder 6 is rotatably installed with two screw rods 7 on the outer side, one end of each of the two screw rods 7 penetrates through a sliding slot 4 and is threadedly installed with a nut 8.
[0028] The cylinder 6 slides along the sliding slot 4 through the two screw rods 7, the nut 8 and the screw rod 7 can prevent the cylinder 6 from being separated from the two support rods 3, and the cylinder 6 can be positioned after the nut 8 is locked. The cylinder 6 can be fixed according to the distance between the cable and the guide pulley 2, and the cylinder 6 can rotate around the screw rod 7 as the axis, so that the cylinder 6 can automatically adjust along the inclined direction of the cable.
[0029] The cylinder 6 is fixedly installed with a blowing ring 10 at the top end, the inner side of the blowing ring 10 is provided with an inclined surface at the lower end, a plurality of blowing holes 12 are equidistantly arranged in the interior of the inclined surface, the plurality of blowing holes 12 are all directed to the axis of the cylinder 6, and a gas conveying pipe 11 is fixedly installed on the upper surface of the blowing ring 10;
[0030] The gas conveying pipe 11 is connected with external gas conveying equipment, such as a gas pump, and the like. The external gas conveying equipment can input high-pressure gas into the blowing ring 10 through the gas conveying pipe 11, the high-pressure gas can be blown to the surface of the cable through the blowing holes 12, so as to further blow off the mud, and at the same time, the residual mud in the cylinder 6 is blown out, so as to avoid that the mud remains in the cylinder 6 for a long time.
Claims
1. A logging guide pulley with a mud scraping device, comprising a support (1), characterized in that, The bracket (1) is rotatably mounted with a guide pulley (2), and the bracket (1) is rotatably mounted with support rods (3) on both the left and right sides. The two support rods (3) are provided with sliding grooves (4) inside, and the two support rods (3) are slidably mounted with a mud scraper (5) through the sliding grooves (4) inside.
2. A logging guide pulley with a mud scraping device according to claim 1, characterized in that, The sludge scraping component (5) includes a cylinder (6), and two sets of sludge scraping blades (9) are fixedly installed inside the cylinder (6) by multiple spring clips. The two sets of sludge scraping blades (9) are installed inside the cylinder (6) from bottom to top and are arranged in a crisscross pattern.
3. A logging guide pulley with a mud scraping device according to claim 2, characterized in that, The scraper blade (9) has an arc-shaped structure. There are two scraper blades (9) in each group, and they are arranged symmetrically. Each scraper blade (9) is fixedly connected to the inner wall of the cylinder (6) through two spring pieces.
4. A logging guide pulley with a mud scraping device according to claim 2, characterized in that, A screw (7) is rotatably mounted on the outer side of the cylinder (6), and one end of each screw (7) passes through the two grooves (4) and is threaded with a nut (8).
5. A logging guide pulley with a mud scraping device according to claim 2, characterized in that, An air-blowing ring (10) is fixedly installed at the top of the cylinder (6). An inclined surface is provided at the lower end of the inner side of the air-blowing ring (10). Several air-blowing holes (12) are opened at equal intervals around the inside of the inclined surface. All the air-blowing holes (12) face the axis of the cylinder (6). An air supply pipe (11) is fixedly installed on the upper surface of the air-blowing ring (10).