Rapid fisher device for wire-line coring drilling tool

Abstract

The invention discloses a rapid fisher device for a wire line coring drilling tool, and relates to the technical field of well drilling wire line coring drilling tools. The fishing spear comprises a fishing spear head, an unfreezing device and an outer barrel, a first annular groove is formed in the conical bottom of the top of the fishing spear head, an inclined groove is formed in the front face of the unfreezing device, a barrel cover is arranged on the top of the outer barrel, and an inner barrel is arranged in the outer barrel. An outer cylinder and an inner cylinder are arranged, specifically, the fisher is lowered to the top of a fishing spear head through a steel wire rope, the outer cylinder moves downwards relative to the inner cylinder under the self-weight effect of the fisher, at the moment, a steel ball is in a free state, the fishing spear head pushes the steel ball to move all around, then the steel ball falls into an annular groove below a cone of the fishing spear head, and finally the steel wire rope is lifted; and the inner conical surface at the lower part of the outer cylinder gathers the steel ball towards the center and locks the fishing spearhead, so that the fisher and the fishing spearhead are lifted out of the ground together, the working efficiency is greatly improved by a quick and convenient fishing mode, and the generalization of equipment application is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rope coring tools for drilling, and in particular relates to a quick salvage device for rope coring tools. Background Art

[0002] During the drilling operation of rope salvage drilling tools, it is often difficult for the salvage device to get the spearhead stuck, and the salvage device needs to be pulled up multiple times, and the spearhead can only be stuck by the impact of the heavy hammer on the salvage device. The lower end opening of the traditional salvage device is small, and it is not easy to align with the spearhead in the center. During the lifting of the salvage device, the contact area between the clamp in the salvage device and the spearhead is small. If the salvage device is blocked during the lifting process, the spearhead may be separated from the salvage device, and multiple attempts are required to complete the salvage, which greatly reduces the work efficiency and also greatly increases the workload of the staff. In addition, the practicability of the equipment is low. Therefore, a fast salvage device for rope coring drilling tools is proposed. Summary of the invention

[0003] The object of the present invention is to provide a fast salvage device for rope coring drilling tools, by arranging an outer cylinder and an inner cylinder, specifically, firstly lowering the salvage device to the top of the salvage spearhead through the steel wire rope, and the outer cylinder moves downward relative to the inner cylinder under the action of the dead weight of the salvage device, at this time, the steel ball is in a free state, and the salvage spearhead pushes the steel ball to move around, and then the steel ball falls into the annular groove under the cone of the salvage spearhead, and finally the steel wire rope is pulled, and the inner cone surface at the lower part of the outer cylinder gathers the steel ball toward the center, locks the salvage spearhead, so that the salvage device and the salvage spearhead are lifted out of the ground together, which solves the problem that the lower end opening of the traditional salvage device is small and it is not easy to be aligned with the salvage spearhead in the center. During the lifting process of the salvage device, due to the small contact area between the clamp in the salvage device and the salvage spearhead, if a jamming situation occurs during the lifting process, the salvage spearhead may be separated from the salvage device, and multiple attempts are required to complete the salvage, which greatly reduces the work efficiency and also greatly increases the workload of the staff, and the practicality of the equipment is low.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention discloses a fast salvage device for rope coring drilling tools, comprising a salvage spearhead, a jam releaser and an outer cylinder, wherein the top of the salvage spearhead is provided with an annular groove 1 at the bottom of the cone at the top of the salvage spearhead, an inclined groove is provided at the front of the jam releaser, a cylinder cover is provided at the top of the outer cylinder, an inner cylinder is provided inside the outer cylinder, a plurality of cavities are provided at the bottom of the inner cylinder, steel balls are provided inside the plurality of cavities, the outer surfaces of the plurality of steel balls are in contact with the inclined surface at the top of the salvage spearhead and the inside of the annular groove 1, the bottom of the inner cylinder is conical, when the salvage device is in an initial state, the steel balls are in a space surrounded by the outer cylinder and the upper sleeve, the bottom of the inner cylinder is flush with the bottom of the outer cylinder, and the steel balls are in a retracted state, when the inner tube of the drilling tool needs to be salvaged, the salvage device is first lowered to the top of the salvage spearhead by a steel wire rope, since the steel balls in the inner cylinder are in a retracted state, the salvage spearhead and the inner cylinder are relatively stationary, and the outer cylinder moves downward relative to the inner cylinder under the action of the deadweight of the salvage device.

[0006] Furthermore, a circular hole for the rope to pass through is provided on the top of the cylinder cover, an upper sleeve is provided between the cylinder cover and the outer cylinder, an annular groove II is provided on the bottom inside the upper sleeve, steel balls are provided on the left and right sides inside the annular groove, and when it is necessary to disengage the salvage device on the ground, first hold the upper sleeve and move it toward the salvage spearhead to make the steel balls free, then hold the lower sleeve to separate the salvage device from the salvage spearhead, and the salvage spearhead pushes the steel balls to the surroundings, thereby disengaging from the salvage device.

[0007] Furthermore, an outer cylinder spring is fixedly connected to the bottom of the cylinder cover, and the side of the outer cylinder spring away from the cylinder cover is fixedly connected to the inner wall of the upper sleeve, and two through holes are provided on the left and right sides of the top of the outer cylinder, and the inner walls of the two through holes are in contact with the outer surface of the steel balls, and the bottoms of the two through holes are provided with straight notches, and an annular groove is provided on the outer surface of the inner cylinder, and the inside of the annular groove is in contact with the outer surfaces of the two steel balls, and a hole is provided on the top of the annular groove, and the bottom of the inner wall of the inner cylinder is fixedly connected to the inner cylinder spring, and the top of the inner cylinder spring is fixedly connected to the bottom of the cylinder cover, and the bottom of the outer surface of the outer cylinder is provided with a lower sleeve. When the release device hits the cylinder cover, the outer cylinder moves downward relative to the inner cylinder. When the annular groove on the inner cylinder is aligned with the steel ball placed in the second through hole, the outer cylinder spring pushes the upper sleeve downward, the steel ball shrinks toward the center, and the inner cylinder and the outer cylinder are locked together. At this time, the steel ball is in a free state, and pulling the wire rope can separate the salvage device from the spearhead. When the salvage device is in the locked state of the inner and outer cylinders, hold the cylinder cover and pull the upper sleeve upward. When the annular groove two of the upper sleeve is aligned with the steel ball in the second through hole, the inner cylinder spring in a compressed state pushes the inner cylinder downward, and the steel ball moves around to lock the outer cylinder and the upper sleeve. At this time, the salvage device returns to its initial state.

[0008] Furthermore, a through hole 1 is opened on the left and right sides of the outer cylinder, and hexagon socket bolts are arranged inside the two through holes 1. The two hexagon socket bolts pass through the straight slot and extend into the hole inside the inner cylinder. The hexagon socket bolts are connected to the inner cylinder through the straight slot on the outer cylinder.

[0009] The present invention has the following beneficial effects:

[0010] 1. The present invention arranges an outer cylinder and an inner cylinder. Specifically, the salvage device is first lowered to the top of the salvage spearhead by a steel wire rope. Under the action of the deadweight of the salvage device, the outer cylinder moves downward relative to the inner cylinder. At this time, the steel ball is in a free state. The salvage spearhead pushes the steel ball to move around. Then the steel ball falls into the annular groove under the cone of the salvage spearhead. Finally, the steel wire rope is pulled. The inner cone surface at the lower part of the outer cylinder gathers the steel ball toward the center, locking the salvage spearhead, so that the salvage device and the salvage spearhead are lifted out of the ground together. The fast and convenient salvage method greatly improves the work efficiency and the practicability of the equipment.

[0011] 2. The present invention provides a release device. Specifically, when it is necessary to disengage the salvage device underground, the release device is first dropped from the wellhead. The release device hits the cylinder cover, causing the outer cylinder to move downward relative to the inner cylinder. When the annular groove on the inner cylinder is aligned with the steel ball placed in the second through hole, the outer cylinder spring pushes the upper sleeve to move downward, the steel ball shrinks toward the center, and the inner cylinder and the outer cylinder are locked together. At this time, the steel ball is in a free state, and the salvage device can be separated from the spearhead by pulling the wire rope, which further improves the work efficiency, greatly improves the convenience of the equipment, and has high usability.

[0012] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper sleeve of the present invention;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the outer cylinder of the present invention;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the inner cylinder of the present invention;

[0018] Figure 5It is a schematic diagram of the overall structure of the inner cylinder of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Spearhead; 2. Card release device; 3. Inclined groove; 111. Cylinder cover; 112. Upper sleeve; 113. Outer sleeve; 114. Lower sleeve; 115. Hexagon socket bolt; 116. Outer sleeve spring; 117. Inner sleeve; 118. Steel ball; 119. Cavity; 120. Inner sleeve spring; 121. Steel ball; 122. Through hole one; 123. Annular groove; 124. Straight slot; 125. Through hole two. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-5 As shown, the present invention is a fast fishing device for rope coring drilling tools, comprising a fishing spear head 1, a jam releaser 2 and an outer cylinder 113. The top of the fishing spear head 1 is provided with an annular groove 1 at the bottom of the cone at the top of the fishing spear head 1, and the front of the jam releaser 2 is provided with an inclined groove 3. The top of the outer cylinder 113 is provided with a cylinder cover 111, and the inner cylinder 117 is provided inside the outer cylinder 113. The bottom of the inner cylinder 117 is provided with a plurality of cavities 119, and the plurality of cavities 119 are provided with steel balls 118. The outer surfaces of the plurality of steel balls 118 are in contact with the inclined surface at the top of the fishing spear head 1 and the inside of the annular groove 1. The bottom of the outer cylinder 113 is conical. The fishing device is first lowered to the top of the fishing spear head by a steel wire rope. Under the action of the deadweight of the fishing device, the outer cylinder moves downward relative to the inner cylinder. At this time, the steel balls are in a free state, and the fishing spear head pushes the steel balls to move around. The steel ball then falls into the annular groove under the cone of the spearhead, and finally the wire rope is pulled. The inner cone surface at the bottom of the outer cylinder draws the steel ball toward the center, locking the spearhead, so that the salvage device and the spearhead are lifted out of the ground together. The fast and convenient salvage method greatly improves the work efficiency and the practicability of the equipment. Secondly, when it is necessary to disengage the salvage device underground, first drop a release device from the wellhead, and the release device hits the cylinder cover, so that the outer cylinder moves downward relative to the inner cylinder. When the annular groove on the inner cylinder is aligned with the steel ball placed in the second through hole, the outer cylinder spring pushes the upper sleeve downward, the steel ball shrinks toward the center, and the inner cylinder is locked together with the outer cylinder. At this time, the steel ball is in a free state, and pulling the wire rope can separate the salvage device from the spearhead, which further improves the work efficiency, greatly improves the convenience of the equipment, and has high usability.

[0023] A round hole for the rope to pass through is provided at the top of the cylinder cover 111, an upper sleeve 112 is provided between the cylinder cover 111 and the outer cylinder 113, an annular groove 2 is provided at the bottom inside the upper sleeve 112, and steel balls 121 are provided on the left and right sides of the annular groove.

[0024] An outer cylinder spring 116 is fixedly connected to the bottom of the cylinder cover 111 , and a side of the outer cylinder spring 116 away from the cylinder cover 111 is fixedly connected to the inner wall of the upper sleeve 112 .

[0025] The left and right sides of the top of the outer cylinder 113 are both provided with second through holes 125 , the inner walls of the two second through holes 125 are in contact with the outer surface of the steel ball 121 , and the bottoms of the two second through holes 125 are provided with straight notches 124 .

[0026] An annular groove 123 is formed on the outer surface of the inner cylinder 117 . The inside of the annular groove 123 contacts the outer surfaces of the two steel balls 121 . A hole is formed on the top of the annular groove 123 .

[0027] The bottom of the inner wall of the inner cylinder 117 is fixedly connected with an inner cylinder spring 120 , the top of the inner cylinder spring 120 is fixedly connected with the bottom of the cylinder cover 111 , and the bottom of the outer surface of the outer cylinder 113 is provided with a lower sleeve 114 .

[0028] A through hole 122 is formed on the left and right sides of the outer cylinder 113 . A hexagon socket bolt 115 is disposed inside the two through holes 122 . The two hexagon socket bolts 115 pass through the straight slot 124 and extend into the hole inside the inner cylinder 117 .

[0029] A specific application of this embodiment is: when the salvage device is in the initial state, the steel ball 121 is in the space surrounded by the outer tube 113 and the upper sleeve 112, the bottom of the inner tube 117 is flush with the bottom of the outer tube 113, and the steel ball 118 is in a retracted state. When the inner tube of the drilling tool needs to be salvaged, the salvage device is first lowered to the top of the salvage spearhead 1 through the wire rope. Since the steel ball 118 in the inner tube 117 is in a retracted state, the salvage spearhead 1 and the inner tube 117 are relatively stationary, and the outer tube 113 is relatively stationary relative to the inner tube under the action of the deadweight of the salvage device. 117 moves downward, at this time, the steel ball 118 is in a free state, the spearhead 1 pushes the steel ball 118 to move around, and then the steel ball 118 falls into the annular groove 1 under the cone of the spearhead 1, and finally the wire rope is pulled, and the inner cone surface of the lower part of the outer cylinder 113 draws the steel ball 118 toward the center, locking the spearhead 1, so that the salvage device and the spearhead 1 are lifted out of the ground together. When it is necessary to detach the salvage device on the ground, first hold the upper sleeve 112 and move it toward the spearhead 1 to make the steel ball 121 in a free state, and then hold the lower sleeve 114 separates the salvage device from the salvage spearhead 1, and the salvage spearhead 1 pushes the steel ball 121 to the surroundings, thereby detaching the salvage device. When it is necessary to detach the salvage device underground, the card release device 2 is first dropped from the wellhead, and the card release device 2 hits the cylinder cover 111, so that the outer cylinder 113 moves downward relative to the inner cylinder 117. When the annular groove 123 on the inner cylinder 117 is aligned with the steel ball 121 placed in the second through hole 125, the outer cylinder spring 116 pushes the upper sleeve 112 to move downward, and the steel ball 121 shrinks toward the center, and the inner cylinder 117 and the outer cylinder 1 13 is locked together, at this time, the steel ball 118 is in a free state, and the salvage device can be separated from the spearhead 1 by pulling the steel wire rope. When the salvage device is in the locked state of the inner and outer cylinders 113, hold the cylinder cover 111 and pull the upper sleeve 112 upward. When the annular groove 2 of the upper sleeve 112 is aligned with the steel ball 121 in the second through hole 125, the inner cylinder spring 120 in the compressed state pushes the inner cylinder 117 downward, and the steel ball 121 moves around to lock the outer cylinder 113 and the upper sleeve 112. At this time, the salvage device returns to its initial state.

[0030] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed over multiple units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those of ordinary skill in the art may understand and implement the present invention without creative effort.

[0031] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. Any "predetermined threshold", "preset threshold" and other similar expressions that do not indicate specific values ​​can be determined by a person of ordinary skill in the art through simple experiments or corresponding debugging.

[0032] It should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fast fishing device for a rope coring drill, characterized in that: The invention comprises a spearhead (1), a jam releaser (2) and an outer cylinder (113); the top of the spearhead (1) and the bottom of the cone at the top of the spearhead (1) are provided with an annular groove; the front of the jam releaser (2) is provided with an inclined groove (3); the top of the outer cylinder (113) is provided with a cylinder cover (111); and the inner cylinder (117) is provided inside the outer cylinder (113); The bottom of the inner cylinder (117) is provided with a plurality of cavities (119), each of which is provided with a steel ball (118). The outer surfaces of the steel balls (118) are in contact with the top inclined surface of the spearhead (1) and the inside of the annular groove. The bottom of the inner part of the outer cylinder (113) is conical.

2. A fast fishing device for a rope coring drill according to claim 1, characterized in that: A circular hole for the rope to pass through is provided at the top of the cylinder cover (111), an upper sleeve (112) is provided between the cylinder cover (111) and the outer cylinder (113), an annular groove 2 is provided at the bottom inside the upper sleeve (112), and steel balls (121) are provided on the left and right sides of the annular groove.

3. A fast fishing device for a rope coring drill according to claim 2, characterized in that: An outer cylinder spring (116) is fixedly connected to the bottom of the cylinder cover (111), and a side of the outer cylinder spring (116) away from the cylinder cover (111) is fixedly connected to the inner wall of the upper sleeve (112).

4. A fast fishing device for a rope coring drill according to claim 3, characterized in that: The outer cylinder (113) is provided with a second through hole (125) on the left and right sides of the top, the inner walls of the two second through holes (125) are in contact with the outer surface of the steel ball (121), and the bottoms of the two second through holes (125) are provided with a straight notch (124).

5. A fast fishing device for a rope coring drill according to claim 4, characterized in that: An annular groove (123) is provided on the outer surface of the inner cylinder (117), the interior of the annular groove (123) is in contact with the outer surfaces of the two steel balls (121), and a hole is provided on the top of the annular groove (123).

6. A fast fishing device for a rope coring drill according to claim 5, characterized in that: An inner cylinder spring (120) is fixedly connected to the bottom of the inner wall of the inner cylinder (117), the top of the inner cylinder spring (120) is fixedly connected to the bottom of the cylinder cover (111), and a lower sleeve (114) is provided at the bottom of the outer surface of the outer cylinder (113).

7. A fast fishing device for a rope coring drill according to claim 6, characterized in that: A through hole (122) is provided on the left and right sides of the outer cylinder (113), and a hexagon socket bolt (115) is provided inside the two through holes (122). The two hexagon socket bolts (115) pass through the straight slot (124) and extend into the hole inside the inner cylinder (117).

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