Well logging headstall
By using sliding sleeve columns, sliders and high elastic wear-resistant rubber pads in logging bridles, the problem that the cable breaks at the weak point when it encounters a clamp, and the stability and resistance of the clamp drill is achieved when it is broken. Pressure ability reduces the difficulty of accident handling and operating costs.
Patent Information
- Application Number
- CN202420996373.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-05-09
AI Technical Summary
When existing logging bridles encounter clamps, the mechanical tension provided by the test winch is likely to cause cable breakage instead of breaking at reserved weaknesses, which increases the difficulty and operating costs of accident handling.
A logging bridle including sliding sleeve columns, sliders, fixed sleeves and high elastic wear-resistant rubber pads is designed. By adjusting the distance between the sliding sleeve columns and fixed sleeves, the support of the weakness grooves is adjusted to ensure that during downward detection. The connection is stable, the compressive resistance is strong, and the anti-loose shell is relaxed when the drill is stuck and broken, and the arc-shaped weakness groove and slider are used to achieve smooth cable recycling.
Ensure connection stability and compressive resistance during downward detection, ensure smooth breaking of the cable when the drill is stuck, reduce the difficulty of accident handling and operating costs, and improve the efficiency of cable recycling.
Smart Images
Figure CN222141228U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of petroleum well logging, and more specifically relates to a well logging bridle. Background Art
[0002] The bridle is an instrument used to connect the cable and the logging instrument and facilitate the transportation of the instrument down the well. Usually the bridle has a fixed breaking force weakness. When it gets stuck during the downhole process, the mechanical pulling force provided by the test winch is used to break the bridle at the weak point to prevent the cable from breaking and falling into the well. However, when the logging well conditions are complicated, the mechanical pulling force provided by the test winch will cause the cable to break instead of breaking at the weak point reserved in the logging bridle, resulting in cable fragments left on the top of the bridle, which increases the difficulty of subsequent accident handling, complicates downhole accidents, and leads to increased operating costs.
[0003] For example, a logging bridle structure with patent application number CN202223414597.3 is provided with an oil pipe, a joint connected to the lower end of the oil pipe in sequence, and a connecting seat; a cone seat and a compression cone are sequentially installed in the joint; a plurality of silicon injection holes are provided in the middle part of the joint; a tensile weak point shaft section concave inwardly is provided on the side wall of the lower end of the joint; the tensile weak point shaft section is provided with a breaking part for releasing tension. When the logging instrument is stuck, the utility model can ensure that it breaks at the weak point, which has the beneficial effect of protecting the cable from being smoothly separated from the logging instrument, and is conducive to reducing the difficulty of handling accidents and operating costs.
[0004] Although the above-mentioned logging bridle structure can reduce the difficulty of handling accidents and the operating cost, the weak points of the logging bridle are still more susceptible to breakage due to external forces during operation. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a well logging bridle, which ensures the stability of connection during descending detection and has strong pressure resistance.
[0006] The utility model discloses a logging bridle, comprising a connecting seat; a fixing stud 1 is fixedly arranged on the upper end of the connecting seat; the fixing stud 1 is threadedly connected to a sliding block; six grounding wire posts are arranged at equal intervals on the upper end of the fixing stud 1; a clamping block is slidably arranged on the inner side of the sliding block; a fixing stud 2 is fixedly connected to the upper end of the clamping block; the fixing stud 2 is threadedly connected to an oil pipe; an upper cover is fixedly arranged on the lower upper end of the oil pipe; six bolts are present between the upper cover and the oil pipe; the bolts are threadedly connected to the upper cover and the oil pipe respectively; the utility model also includes a sliding groove fixedly arranged on the side of the upper cover; a sliding plate is fixedly connected to the upper end of the sliding plate; two sliding plates slide on the inner side of the sliding groove; the upper cover is fixedly connected to a pair of fixing shells; the inner sides of the two fixing shells are slidably connected to sliding sleeves; the sliding sleeves on the same side are fixedly connected to the upper end surface of the sliding plate; a wire rope is connected to the upper end of the sliding sleeve; a closed weak point groove is fixedly arranged on the outer side of the sliding block; a wire groove 2 is present on the inner side of the fixing stud 1; a wire groove 1 is present at the lower end of the clamping block; the wire groove 1 corresponds to the wire groove 2.
[0007] Preferably, six anti-loosening shells are fixedly arranged at the lower end of the clamping block; each of the anti-loosening shells corresponds to a longitudinal grounding wire column.
[0008] Preferably: a deformation pad is fixedly arranged on the outer circumference of the grounding wire column; the deformation pad is a highly elastic and wear-resistant rubber pad.
[0009] Preferably: an anti-loosening pad is embedded between the lower end of the oil pipe and the second fixing stud; the anti-loosening pad is a highly elastic and wear-resistant rubber ring.
[0010] Preferably, the weak point groove is arc-shaped; the sliding track of the clamping block covers the inner side wall of the sliding block at a height corresponding to the weak point groove.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] By setting a sliding sleeve, a slide plate, and a fixed sleeve shell, and adjusting the distance between the sliding sleeve and the inner upper end of the fixed sleeve shell, it is possible to adjust whether there is support on both sides of the weak point slot, thereby ensuring the stability of the connection during descending detection and having strong pressure resistance; when the drill is stuck and pulled off, the rope tying the anti-loosening shell is loosened, and then the oil pipe is pulled up. At this time, the supports and splints on both sides of the weak point slot have risen, and the connecting seat and the lower end of the slide plate are stuck in the well. As the tension on the upper side of the oil pipe increases, the slide plate is pulled off at the weak point slot. At the same time, as the anti-loosening shell rises, the grounding part is better separated from the grounding wire column, and the cable is easier to recover. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model.
[0015] Explanation of the numbers in the figure: 10, upper cover; 11, oil pipe; 12, bolt; 13, fixed sleeve; 14, slide plate; 15, slide block; 16, weak point groove; 17, slide groove; 18, anti-loosening shell; 19, wire groove one; 20, grounding wire column; 21, deformation pad; 22, fixing stud one; 23, connecting seat; 24, clamping block; 25, fixing stud two; 26, anti-loosening pad; 27, wire groove two; 28, sliding sleeve column. DETAILED DESCRIPTION
[0016] Specific embodiment 1: Please refer to Figure 1-2 A logging bridle comprises a connecting seat 23; a fixing stud 22 is fixedly arranged on the upper end of the connecting seat 23; the fixing stud 22 is threadedly connected to a slider 15; six grounding wire posts 20 are evenly spaced on the upper end of the fixing stud 22; a clamping block 24 is slidably arranged inside the slider 15; a fixing stud 25 is fixedly connected to the upper end of the clamping block 24; the fixing stud 25 is threadedly connected to an oil pipe 11; an upper cover 10 is fixedly arranged on the lower upper end of the oil pipe 11; the upper There are six bolts 12 between the cover 10 and the oil pipe 11; the bolts 12 are threadedly connected to the upper cover 10 and the oil pipe 11 respectively; there is also a slide groove 17 fixedly arranged on the side of the upper cover 10; the upper end of the slider 15 is fixedly connected to the slide plate 14; the two slide plates 14 slide inside the slide groove 17; the upper cover 10 is fixedly connected to a pair of fixed sleeves 13; the inner sides of the two fixed sleeves 13 are slidably connected to the sliding sleeve column 28; the sliding sleeve column 28 on the same side is fixedly connected to the upper end surface of the slide plate 14 The upper end of the sliding sleeve 28 is connected to a steel wire rope; a closed weak point groove 16 is fixedly provided on the outer side of the slider 15; a wire groove 27 is provided on the inner side of the fixing stud 1 22; a wire groove 19 is provided on the lower end of the clamping block 24; the wire groove 19 corresponds to the wire groove 27; by setting the sliding sleeve 28, the slide plate 14, and the fixed housing 13, the distance between the sliding sleeve 28 and the upper end of the inner side of the fixed housing 13 is adjusted, thereby adjusting whether there is a gap between the two sides of the weak point groove 16 The support ensures the stability of the connection during descending detection and has strong pressure resistance. When the drill is stuck and broken, the rope tied to the anti-loosening shell 18 is loosened, and then the oil pipe 11 is pulled up. At this time, the supports and splints on both sides of the weak point groove 16 have risen, and the connecting seat 23 and the lower end of the slide plate 14 are stuck in the well. As the tension on the upper side of the oil pipe 11 increases, the slide plate 14 is broken at the weak point groove 16. At the same time, as the anti-loosening shell 18 rises, the grounding part is better separated from the grounding wire column 20, and the cable is easier to recover.
[0017] See also Figure 2 Six anti-loosening shells 18 are fixedly arranged at the lower end of the clamping block 24; each of the anti-loosening shells 18 corresponds to the longitudinal grounding wire column 20.
[0018] See also Figure 2A deformation pad 21 is fixedly arranged on the outer circumference of the grounding wire column 20; the deformation pad 21 is a highly elastic and wear-resistant rubber pad.
[0019] See also Figure 2 An anti-loosening pad 26 is embedded between the lower end of the oil pipe 11 and the second fixing stud 25; the anti-loosening pad 26 is a highly elastic and wear-resistant rubber ring.
[0020] See also Figure 2 , the weak point groove 16 is arc-shaped; the sliding track of the clamping block 24 covers the inner side wall of the slider 15 at a height corresponding to the weak point groove 16 .
[0021] During operation, the multiple bolts 12 on the upper cover 10 are removed, the cables are inserted into the inner side of the anti-loosening shell 18, and then the grounding part of the cable is wound around the grounding wire column 20, and the other parts of the cable are connected to the connecting seat 23; the oil pipe 11 and the second fixing stud 25 are installed, and then the clamping block 24 is placed inside the slider 15, and the slider 14 is passed through the slide groove 17 so that the slider 14 slides inside the slide groove 17, and the upper cover 10 is installed on the outer side of the oil pipe 11, and then the six bolts 12 are tightened, and the lower end of the sliding sleeve column 28 is fixed on the slide groove 14, and the anti-loosening and anti-falling treatment is done; the wire rope at the end of the sliding sleeve column 28 is connected to the machine for collecting and releasing the rope, and the lifting and lowering are controlled separately with the oil pipe 11;
[0022] During normal operation, the steel wire rope on the upper end of the sliding sleeve 28 is tightened (not shown in the figure), so that the slide plate 14 slides to the upper end of the slide groove 17, and the upper end surface of the slide plate 14 abuts against the lower end surface of the upper cover 10. Then the anti-loosening shell 18 buckles the grounding wire column 20, clamps the part where the grounding cable is connected to the grounding wire column 20, and at the same time, the side wall of the clamping block 24 and the outer wall of the upper cover 10 are used to prevent the weak point slot 16 from being broken prematurely due to excessive external force during operation;
[0023] When the drill is stuck, a steel wire rope should be delivered to the sliding sleeve 28 to pull up the oil pipe 11. At this time, the distance between the slide plate 14 and the lower end of the upper cover 10 increases, and the upper cover 10 and the clamping block 24 gradually rise and move away from the weak point groove 16. Then the weak point groove 16 is exposed with no support on both sides. With continued upward pulling, the slide plate 14 is finally disconnected at the weak point groove 16, and the cable is recovered.
[0024] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.
[0025] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the product or system including the elements.
[0026] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.
Claims
1. A logging bridle, comprising a connecting seat (23); a fixing stud 1 (22) is fixedly arranged at the upper end of the connecting seat (23); the fixing stud 1 (22) is threadedly connected to a slider (15); six grounding wire posts (20) are arranged at equal intervals at the upper end of the fixing stud 1 (22); a clamping block (24) is slidably arranged inside the slider (15); a fixing stud 2 (25) is fixedly connected to the upper end of the clamping block (24); the fixing stud 2 (25) is threadedly connected to an oil pipe (11); an upper cover (10) is fixedly arranged at the lower upper end of the oil pipe (11); six bolts (12) are arranged between the upper cover (10) and the oil pipe (11); the bolts (12) are threadedly connected to the upper cover (10) and the oil pipe (11), respectively; characterized in that: The invention also comprises a slide groove (17) fixedly arranged on the side of the upper cover (10); the upper end of the slider (15) is fixedly connected to the slide plate (14); the two slide plates (14) slide inside the slide groove (17); the upper cover (10) is fixedly connected to a pair of fixed shells (13); the inner sides of the two fixed shells (13) are slidably connected to the sliding sleeve column (28); the sliding sleeve column (28) and the upper end surface of the slider (14) on the same side are fixedly connected; the upper end of the sliding sleeve column (28) is connected to a steel wire rope; a closed weak point groove (16) is fixedly arranged on the outer side of the slider (15); a wire groove (27) is provided inside the first fixing stud (22); a wire groove (19) is provided at the lower end of the clamping block (24); the first wire groove (19) corresponds to the second wire groove (27).
2. A well logging bridle according to claim 1, characterized in that: Six anti-loosening shells (18) are fixedly arranged at the lower end of the clamping block (24); each of the anti-loosening shells (18) corresponds to a longitudinal grounding wire column (20).
3. A logging bridle according to claim 2, characterized in that: A deformation pad (21) is fixedly arranged on the outer circumference of the grounding wire column (20); the deformation pad (21) is a highly elastic and wear-resistant rubber pad.
4. A well logging bridle according to claim 1, characterized in that: An anti-loosening pad (26) is embedded between the lower end of the oil pipe (11) and the second fixing stud (25); the anti-loosening pad (26) is a highly elastic and wear-resistant rubber ring.
5. A well logging bridle according to claim 1, characterized in that: The weak point groove (16) is arc-shaped; the sliding track of the clamping block (24) covers the inner side wall of the sliding block (15) at a corresponding height of the weak point groove (16).