Pumping and spraying type external hook rope fishing device
By adopting a jet and fluid thrust-driven pumping structure in the outer hook rope fishing device, the problem of downward pressure of rope items when disc or clumped in the well is solved, and the capture rate and salvage efficiency are improved.
Patent Information
- Application Number
- CN202323569208.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-27
AI Technical Summary
When salvaging, existing external hook rope salvage devices are prone to cause rope items to be disassembled underground due to their own weight, and may be held against or pressed down when passing through ball-shaped or disc-shaped rope items, resulting in failed capture and reduced capture rate. .
A pump-spray external hook rope fishing device is designed, using a salvage nozzle and a hook structure, which forms negative pressure and fluid thrust through the jet, drives rope items in the well upward, reduces downward pressure, and passes through the cone nose and Drive away the nozzle to assist in pushing open rope items to improve capture efficiency.
It effectively avoids the decline of ropes, improves the capture rate, reduces the downward pressure on ropes when the spray hook is lowered, and improves salvage efficiency.
Smart Images
Figure CN222184719U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of petroleum tools, in particular to a pumping and spraying type external hook rope catching device. Background Art
[0002] The external hook rope scoop is a special tool used to salvage various wire ropes, cables and other ropes from the inside of casing or oil pipe. The current external hook rope scoop needs to be lowered into the well during salvage. When the rope object is hooked with the hook body outside the rope scoop, it can be lifted up to achieve the salvage purpose.
[0003] However, since the rope objects dropped into the well often coil under the well due to their own weight, when the existing external hook rope catching device is lowered, it is necessary to make its main rod penetrate the rope objects in a ball or disk shape, and then make the outer hook pass through the ball or disk shape of the rope objects to achieve capture. Although the front end of the main rod is conical and the outer hook is wedge-shaped, both of which can push away the ball or disk shape of the rope objects, there is a certain probability that when passing through the rope objects, it will resist the rope objects and press them down, or when the outer hook passes through the rope objects, it will resist the rope objects and press them down, thus resulting in capture failure. Summary of the invention
[0004] Based on the above problems, the utility model aims to provide a suction-spray type external hook rope catching device with high salvaging efficiency, which can effectively prevent ropes from sliding down, drive rope objects to give way and move upward to achieve the purpose of hanging, thereby improving the capture rate.
[0005] In view of the above problems, the following technical solutions are provided: a suction-spray type external hook rope catching device, comprising a joint body, a connecting thread is provided at the rear end of the joint body, a salvage nozzle arranged concentrically with the joint body is provided at the front end of the joint body; a cone nose is provided at the front end of the salvage nozzle, and a plurality of spray hooks are provided on the outer wall of the salvage nozzle, the spray hooks include an inclined section extending outward from the outer wall of the salvage nozzle and extending obliquely toward the rear end of the joint body, and a vertical section located at the end of the inclined section and extending toward the rear end of the joint body in parallel with the axis of the joint body, the end face of the vertical section is inclined and faces the salvage nozzle to form a hook tip; a liquid through hole is provided at the center of the joint body, a liquid through channel connected to the liquid through hole is provided at the center of the salvage nozzle, and the spray hook is tubular, and a liquid spray channel connected to the liquid through channel is provided at the center thereof.
[0006] In the above structure, when grabbing, the joint body is lowered and fluid is supplied at the same time, so that the fluid passes through the salvage nozzle and is ejected from the vertical section of the spray hook, forming an upward jet at the spray hook position. The Bernoulli principle is used to form a negative pressure behind the spray hook, that is, in the direction of the cone nose, to drive the ball-shaped or disc-shaped rope objects in the well to move upward under the action of the impact flow, so as to reduce or avoid the downward squeezing of the ball-shaped or disc-shaped rope objects when the spray hook is lowered, so as to improve the capture rate.
[0007] The utility model is further configured that the liquid spraying channel of the vertical section is provided with a nozzle, and the nozzle diameter of the nozzle is smaller than the diameter of the liquid spraying channel.
[0008] In the above structure, the nozzle can increase the injection speed of the fluid.
[0009] The utility model is further configured such that a conical cavity connected to a liquid passage is provided at one end of the conical nose facing away from its conical tip, and a plurality of expulsion nozzles evenly distributed along the circumferential direction of the conical nose and communicated with the conical cavity are provided on the outer conical wall of the conical nose, and the expulsion nozzles are arranged in the radial direction of the conical nose and inclined toward the rear end of the joint body.
[0010] In the above structure, the cone nose will push away the ball-shaped or disc-shaped rope-like objects when passing through them, and will also generate a certain downward pressure on them. The dispelling nozzle can use the fluid thrust to assist in pushing away the ball-shaped or disc-shaped rope-like objects, and push them upward through impact; the angle a between the axis of the dispelling nozzle and the axis of the cone nose is 45 degrees to 90 degrees.
[0011] The utility model is further configured such that the expelling nozzle is located at the middle section of the outer cone wall of the cone nose.
[0012] In the above structure, the timing of fluid intervention is improved as quickly as possible to avoid excessive contact and extrusion between the cone nose and the ball-shaped or disk-shaped rope objects.
[0013] The utility model is further configured that the rear end of the salvage nozzle is provided with an external nozzle thread, and the front end of the joint body is provided with an internal joint thread that is screwed with the external nozzle thread.
[0014] In the above structure, the salvage nozzle is connected to the joint body through threads.
[0015] The utility model is further configured that the rear end of the salvage nozzle is also provided with a stop shoulder, and when the external thread of the nozzle is screwed with the internal thread of the joint, the stop shoulder abuts against the front end face of the joint body.
[0016] In the above structure, the shoulder is used to limit the relative position of the two after the connection is completed.
[0017] The utility model is further configured that the outer wall of the shoulder is provided with a hexagonal twisting portion, and a chamfered transition is formed between the end of the shoulder facing the front end direction of the salvage nozzle and the outer wall of the salvage nozzle.
[0018] In the above structure, the hexagonal twisting portion can facilitate the installation of the salvage nozzle, and the rounded transition can reduce the stress concentration problem caused by the large change in the outer diameter between the salvage nozzle and the shoulder.
[0019] The utility model is further configured such that the thread minor diameter of the nozzle external thread is greater than or equal to the external diameter of the salvaging nozzle.
[0020] In the above structure, the strength of the external thread of the nozzle is effectively guaranteed, and the reduction of the strength of this part after the external thread of the nozzle is opened is avoided.
[0021] The utility model is further configured that a tapered guide surface is provided between the front end surface of the joint body and the outer cylindrical wall, and the diameter of the small diameter end of the tapered guide surface is not less than the outer diameter of the shoulder.
[0022] In the above structure, the conical guide surface can facilitate the upward flow of the upward fluid.
[0023] The utility model is further configured such that adjacent spray hooks are arranged at intervals along the axial direction of the salvage nozzle and are staggered uniformly along the circumferential direction of the salvage nozzle.
[0024] In the above structure, it is convenient to capture rope-like objects at various positions in the well, and the capture probability can also be improved by rotation.
[0025] The utility model is further configured that the nozzle and the cone nose are both made of hard alloy; and the connecting thread is an external thread or an internal thread.
[0026] In the above structure, the nozzle and the cone nose made of cemented carbide can effectively improve the wear resistance thereof, and the connecting thread is preferably a tapered internal thread.
[0027] The utility model is further configured such that the sum of the nozzle cross-section of each nozzle and the cross-section of each driven-away nozzle is not greater than the flow cross-section of the salvage nozzle.
[0028] In the above structure, the fluid supply rate of the nozzle and the salvage nozzle can be effectively guaranteed.
[0029] The beneficial effects of the utility model are as follows: when grabbing, the joint body is lowered and fluid is supplied at the same time, so that the fluid passes through the salvage nozzle and is ejected from the vertical section of the spray hook, forming an upward jet at the spray hook position, and using the Bernoulli principle to form a negative pressure behind the spray hook, that is, in the direction of the cone nose, driving the ball-shaped or disc-shaped rope objects in the well to move upward under the action of the impact flow, so as to reduce or avoid the occurrence of downward squeezing of the ball-shaped or disc-shaped rope objects when the spray hook is lowered, so as to improve the capture rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0031] Figure 2 For this utility model Figure 1 Schematic diagram of the full cross-section structure.
[0032] Figure 3 It is a schematic diagram of the explosion structure of the utility model.
[0033] Figure 4 For this utility model Figure 3Schematic diagram of the full cross-section structure.
[0034] Figure 5 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A.
[0035] Figure 6 For this utility model Figure 2 Schematic diagram of the enlarged structure of part B.
[0036] Figure 7 For this utility model Figure 4 Schematic diagram of the enlarged structure of part C.
[0037] Figure 8 For this utility model Figure 2 Schematic diagram of the orthographic projection structure.
[0038] Fig. 9 For this utility model Figure 8 Schematic diagram of the enlarged structure of part D.
[0039] Meaning of the numbers in the figure: 10-connector body; 11-connecting thread; 12-liquid through hole; 13-connector internal thread; 14-conical guide surface; 20-salvage nozzle; 21-liquid passage; 22-nozzle external thread; 23-shoulder; 231-hexagonal twisting part; 232-rounding; 30-conical nose; 31-conical cavity; 32-expel nozzle; 40-spray hook; 41-inclined section; 42-vertical section; 43-spray channel; 44-nozzle. DETAILED DESCRIPTION
[0040] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0041] refer to Figures 1 to 9 ,like Figures 1 to 9 The illustrated embodiment is a suction-spray type external hook rope catching device, comprising a joint body 10, a connecting thread 11 being provided at the rear end of the joint body 10, a salvage nozzle 20 being arranged concentrically with the joint body 10 being provided at the front end of the joint body 10; a cone nose 30 being provided at the front end of the salvage nozzle 20, a plurality of spray hooks 40 being provided at the outer wall of the salvage nozzle 20, the spray hooks 40 comprising an inclined section 41 extending outward from the outer wall of the salvage nozzle 20 while obliquely extending toward the rear end of the joint body 10, and a vertical section 42 being located at the end of the inclined section 41 and extending toward the rear end of the joint body 10 and parallel to the axis of the joint body 10, the end face of the end of the vertical section 42 being arranged obliquely and facing the salvage nozzle 20 to form a hook tip; a liquid through hole 12 being provided at the center of the joint body 10, a liquid through channel 21 being provided at the center of the salvage nozzle 20 connected to the liquid through hole 12, the spray hook 40 being tubular, and a liquid spray channel 43 being provided at the center thereof and communicating with the liquid through channel 21.
[0042] In the above structure, when grabbing, the joint body 10 is lowered and fluid is supplied at the same time, so that the fluid passes through the salvage nozzle 20 and is ejected from the vertical section 42 of the spray hook 40, forming an upward jet at the position of the spray hook 40. The Bernoulli principle is used to form a negative pressure behind the spray hook 40, that is, in the direction of the cone nose 30, so that the ball-shaped or disc-shaped rope objects in the well are driven upward under the action of the impact flow, so as to reduce or avoid the downward squeezing of the ball-shaped or disc-shaped rope objects when the spray hook 40 is lowered, so as to improve the capture rate.
[0043] In this embodiment, the liquid spraying channel 43 of the vertical section 42 is provided with a nozzle 44 , and the nozzle diameter of the nozzle 44 is smaller than the diameter of the liquid spraying channel 43 .
[0044] In the above structure, the nozzle 44 can increase the injection speed of the fluid.
[0045] In this embodiment, the end of the cone nose 30 facing away from its cone tip is provided with a cone cavity 31 connected to the liquid passage 21, and the outer cone wall of the cone nose 30 is provided with a plurality of expulsion nozzles 32 evenly distributed along the circumferential direction of the cone nose 30 and connected to the cone cavity 31. The expulsion nozzles 32 are arranged in the radial direction of the cone nose 30 and are inclined toward the rear end of the joint body 10.
[0046] In the above structure, the cone nose 30 will push away the ball-shaped or disc-shaped rope-like objects when passing through them, and will also generate a certain downward pressure on them. The dispelling nozzle 32 can use the fluid thrust to assist in pushing away the ball-shaped or disc-shaped rope-like objects, and push them upward through impact; the angle a between the axis of the dispelling nozzle 32 and the axis of the cone nose 30 is 45 degrees to 90 degrees.
[0047] In this embodiment, the driving nozzle 32 is located in the middle section of the outer cone wall of the cone nose 30 .
[0048] In the above structure, the timing of fluid intervention is improved as quickly as possible to avoid excessive contact and extrusion between the cone nose 30 and the ball-shaped or disk-shaped rope-like objects.
[0049] In this embodiment, the rear end of the salvage nozzle 20 is provided with a nozzle external thread 22 , and the front end of the joint body 10 is provided with a joint internal thread 13 that is screwed with the nozzle external thread 22 .
[0050] In the above structure, the salvage nozzle 20 is connected to the joint body 10 by threads.
[0051] In this embodiment, a stop shoulder 23 is further provided at the rear end of the salvage nozzle 20 , and when the nozzle external thread 22 is screwed with the joint internal thread 13 , the stop shoulder 23 abuts against the front end surface of the joint body 10 .
[0052] In the above structure, the stop shoulder 23 is used to limit the relative position of the two after the connection is completed.
[0053] In this embodiment, a hexagonal twisting portion 231 is provided on the outer wall of the shoulder 23 , and a chamfer 232 transitions between the end of the shoulder 23 facing the front end of the salvage nozzle 20 and the outer wall of the salvage nozzle 20 .
[0054] In the above structure, the hexagonal twisting portion 231 can facilitate the installation of the salvage nozzle 20, and the rounded transition 232 can reduce the stress concentration problem caused by the large change in the outer diameter between the salvage nozzle 20 and the shoulder 23.
[0055] In this embodiment, the thread minor diameter of the nozzle external thread 22 is greater than or equal to the outer diameter of the salvage nozzle 20 .
[0056] In the above structure, the strength of the nozzle external thread 22 is effectively guaranteed, and the strength reduction of this part after the nozzle external thread 22 is formed is avoided.
[0057] In this embodiment, a tapered guide surface 14 is provided between the front end surface of the joint body 10 and the outer cylindrical wall, and the diameter of the small diameter end of the tapered guide surface 14 is not less than the outer diameter of the shoulder 23 .
[0058] In the above structure, the conical guide surface 14 can facilitate the upward flow of the upward fluid.
[0059] In this embodiment, adjacent spray hooks 40 are arranged at intervals along the axial direction of the salvage nozzle 20 and are evenly staggered along the circumferential direction of the salvage nozzle 20 .
[0060] In the above structure, it is convenient to capture rope-like objects at various positions in the well, and the capture probability can also be improved by rotation.
[0061] In this embodiment, the nozzle 44 and the cone nose 30 are both made of cemented carbide; the connecting thread 11 is an external thread or an internal thread.
[0062] In the above structure, the nozzle 44 and the cone nose 30 made of cemented carbide can effectively improve the wear resistance thereof, and the connecting thread 11 is preferably a tapered internal thread.
[0063] In this embodiment, the sum of the nozzle cross-section of each nozzle 44 and the cross-section of each driving-off nozzle 32 is not greater than the flow cross-section of the salvage nozzle 20 .
[0064] In the above structure, the fluid supply rate of the nozzle 44 and the salvage nozzle 20 can be effectively guaranteed.
[0065] In this embodiment, the cone nose 30 is fixed to the salvage nozzle 20 by welding.
[0066] In the above structure, the two are brazed.
[0067] The beneficial effects of the utility model are as follows: when grabbing, the joint body 10 is lowered and fluid is supplied at the same time, so that the fluid passes through the salvage nozzle 20 and is ejected from the vertical section 42 of the spray hook 40, forming an upward jet at the position of the spray hook 40, and using the Bernoulli principle to form a negative pressure behind the spray hook 40, that is, in the direction of the cone nose 30, driving the ball-shaped or disc-shaped rope objects in the well to move upward under the action of the impact flow, so as to reduce or avoid the occurrence of downward squeezing of the ball-shaped or disc-shaped rope objects when the spray hook 40 is lowered, so as to improve the capture rate.
[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.
Claims
1. A suction-spray type external hook rope catching device, comprising a joint body, characterized in that: A connecting thread is provided at the rear end of the joint body, and a salvage nozzle is provided at the front end of the joint body concentrically arranged with the joint body; a cone nose is provided at the front end of the salvage nozzle, and a plurality of spray hooks are provided on the outer wall of the salvage nozzle, and the spray hooks include an inclined section extending outward from the outer wall of the salvage nozzle and extending obliquely toward the rear end of the joint body, and a vertical section located at the end of the inclined section and extending toward the rear end of the joint body in parallel with the axis of the joint body, and the end face of the vertical section is inclined and faces the salvage nozzle to form a hook tip; a liquid through hole is provided in the center of the joint body, and a liquid through channel connected to the liquid through hole is provided in the center of the salvage nozzle, and the spray hook is tubular, and a liquid spray channel connected to the liquid through channel is provided at the center thereof.
2. The suction-spray type external hook rope catching device according to claim 1, characterized in that: The liquid spraying channel of the vertical section is provided with a nozzle, and the nozzle diameter of the nozzle is smaller than the diameter of the liquid spraying channel.
3. The suction-spray type external hook and rope catching device according to claim 1, characterized in that: The end of the cone nose facing away from its cone tip is provided with a cone cavity connected to the liquid passage, and the outer cone wall of the cone nose is provided with a plurality of expulsion nozzles evenly distributed along the circumferential direction of the cone nose and communicated with the cone cavity. The expulsion nozzles are arranged in the radial direction of the cone nose and are inclined toward the rear end of the joint body.
4. The suction-spray type external hook and rope catching device according to claim 3, characterized in that: The expelling nozzle is located in the middle section of the outer cone wall of the cone nose.
5. The suction-spray type external hook and rope catching device according to claim 1, characterized in that: The rear end of the salvage nozzle is provided with a nozzle external thread, and the front end of the joint body is provided with a joint internal thread which is screwed with the nozzle external thread.
6. The suction-spray type external hook and rope catching device according to claim 5, characterized in that: The rear end of the salvage nozzle is also provided with a stop shoulder, and when the external thread of the nozzle is screwed with the internal thread of the joint, the stop shoulder abuts against the front end surface of the joint body.
7. The suction-spray type external hook and rope catching device according to claim 6, characterized in that: The outer wall of the shoulder is provided with a hexagonal twisted portion, and an end of the shoulder facing the front end direction of the salvage nozzle is transitioned to the outer wall of the salvage nozzle through a chamfered transition.
8. The suction-spray type external hook and rope catching device according to claim 7, characterized in that: The thread minor diameter of the nozzle external thread is greater than or equal to the outer diameter of the salvage nozzle.
9. The suction-spray type external hook and rope catching device according to claim 6, characterized in that: A conical guide surface is provided between the front end surface of the joint body and the outer cylindrical wall, and the diameter of the small diameter end of the conical guide surface is not less than the outer diameter of the shoulder.
10. The suction-spray type external hook and rope catching device according to claim 1, characterized in that: Adjacent spray hooks are arranged at intervals along the axial direction of the salvage nozzle and are evenly staggered along the circumferential direction of the salvage nozzle.