Probe guiding device of perforation depth detector for oil and gas well

Abstract

The invention relates to the technical field of underground perforation hole channel depth detection, in particular to a probe guiding device of a perforation depth detector for an oil and gas well. The probe guiding device of the perforation depth detector for the oil and gas well comprises a probe, a lubricating device and a reversing device, the lubricating device comprises an upper connector, the lower portion of the upper connector is connected with a lower connector, through holes corresponding in position are formed in the middle of the upper connector and the middle of the lower connector, and lubricating oil is injected between the upper connector and the lower connector; the reversing device comprises a grooved wheel fixing plate provided with an arc-shaped track, the included angle between the inlet direction and the outlet direction of the track is 90 degrees, the track comprises two parallel arc-shaped grooved wheel sets, and the probe sequentially penetrates through the lubricating device and the reversing device. According to the probe guiding device of the perforation depth detector for the oil and gas well, the direction of the probe is changed without rotation by arranging the rail with the included angle of 90 degrees between the outlet and the inlet in the grooved wheel fixing plate, the friction force borne by the probe is reduced by matching with the lubricating assembly, the abrasion degree of the probe is reduced, and the measuring efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of downhole perforation channel depth detection, and in particular to a probe guide device of a perforation depth detector for oil and gas wells. Background Art

[0002] When using a downhole perforation depth monitor to measure the depth of the perforation channel in the oil field formation, the probe is in a vertical state inside the instrument, while the perforation channels in the formation are distributed in the horizontal direction, so the direction of the probe needs to be changed. In the prior art, the probe is generally driven by a motor to turn from the vertical direction along the guide tube to the horizontal state to detect the depth of the perforation channel. However, when the probe passes through the steering tube, the sliding friction is large, resulting in severe wear of the probe, which reduces the strength of the probe and affects the accuracy of the probe in detecting the depth of the perforation channel. Therefore, in view of the above shortcomings, a probe guide device for a perforation depth detector for oil and gas wells is proposed. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a probe guide device for a perforation depth detector for oil and gas wells, which solves the problem that when detecting the depth of the perforation channel, the probe needs to be turned from a vertical direction to a horizontal state along a guide tube under the drive of a motor. Since the probe is severely worn due to the large sliding friction when passing through the steering tube, the strength of the probe is reduced to a certain extent, affecting the accuracy of the probe in detecting the depth of the perforation channel.

[0004] (II) Technical solution In order to solve the above problems, the present invention provides a probe guide device for a perforation depth detector for oil and gas wells, comprising: A probe, a lubrication assembly and a reversing assembly, wherein the reversing assembly is connected to the bottom of the lubrication assembly; the lubrication assembly includes an upper joint, in which lubricating oil is filled; a lower joint is connected to the bottom of the upper joint, and corresponding through holes are respectively provided on the lower joint and the upper joint, and the through holes of the upper joint and the lower joint match the size of the probe, and the probe passes through the upper joint and out of the lower joint; The reversing assembly includes a groove wheel fixing plate, which is installed below the lower joint. A track formed by two rows of arc-shaped groove wheel groups parallel to each other is provided in the middle of the groove wheel fixing plate. The probe extends into the gap between the two groove wheel groups. Each groove wheel group is composed of a number of groove wheels, and each groove wheel can rotate freely in the circumferential direction. The exit and entrance directions of the track have an angle of 90 degrees. The probe enters the entrance of the track after passing through the lower joint.

[0005] Preferably, an oil outlet hole is provided on the side of the upper joint, a sealing screw is provided in the oil filling hole, and a fourth sealing ring is provided on the sealing screw.

[0006] Preferably, an oil tank sealing head is provided in the upper joint, the part between the oil reservoir sealing head and the upper joint is set as an oil chamber, the oil chamber is filled with lubricating oil, a plurality of oil holes are provided on the oil tank sealing head, and a through hole corresponding to the position of the upper joint is provided in the middle of the oil tank sealing head.

[0007] Preferably, an intermediate joint is provided between the lower part of the oil tank sealing head and the lower joint. The lower part of the intermediate joint contacts the lower joint and the upper part is inserted into the bottom end of the oil tank sealing head. A through hole corresponding to the position of the upper joint is provided in the middle of the intermediate joint.

[0008] Preferably, a plurality of first sealing rings are provided at the top end of the upper joint.

[0009] Preferably, a second sealing ring is provided at the top of the through hole of the oil tank sealing head, a third sealing ring is provided between the upper joint above the oil chamber and the oil tank sealing head, several fifth sealing rings are provided between the upper joint below the oil chamber and the oil tank sealing head, several sixth sealing rings are provided between the oil tank sealing head and the middle joint, and several eighth sealing rings are provided inside the through hole of the middle joint.

[0010] Preferably, the gap between adjacent groove wheels in each row of groove wheels is smaller than the diameter of the probe.

[0011] Preferably, the sheave fixing plate is composed of two parallelly arranged left and right clamping plates.

[0012] Preferably, the left clamping plate and the right clamping plate are provided with a plurality of screw holes at corresponding positions, and the screw holes are provided with screws for fixing the left clamping plate and the right clamping plate.

[0013] Preferably, an axle pin hole is provided on the sheave fixing plate at a position corresponding to the sheave, and an axle pin is provided in the axle pin hole to fix the sheave.

[0014] (III) Beneficial effects The probe guide device of the perforating depth detector for oil and gas wells provided by the present invention forms a reversing component by providing an arc-shaped groove wheel group with an angle of 90 degrees between the outlet and the inlet direction in the groove wheel fixing plate. The probe is inserted into the reversing component to change the direction of the probe without rotation. The lubrication component with lubricating oil injected on the top reduces the friction force on the probe to the greatest extent, reduces the wear degree of the probe, and improves the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a probe guide device of a perforation depth detector for oil and gas wells of the present invention; Figure 2 This is a schematic diagram of the clamping plate structure of the probe guide device of the perforation depth detector for oil and gas wells of the present invention; Figure 3 The present invention is a schematic diagram of the groove wheel structure of the probe guide device of the perforation depth detector for oil and gas wells.

[0016] Among them, 1. probe; 2. first sealing ring; 3. upper joint; 4. second sealing ring; 5. third sealing ring; 6. oil chamber; 7. sealing screw; 8. fourth sealing ring; 9. oil tank sealing head; 10. oil hole; 11. fifth sealing ring; 12. sixth sealing ring; 13. middle joint; 14. seventh sealing ring; 15. eighth sealing ring; 16. lower joint; 17. groove wheel fixing plate; 18. screw; 19. groove wheel; 20. axle pin; 21. left clamping plate; 22. axle pin hole; 23. screw hole; 24. right clamping plate. Implementation

[0017] 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.

[0018] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by “upper”, “lower”, “inside”, “outside”, “top”, “bottom”, etc. are all based on the orientations or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figure 1-3 As shown, the present invention provides a probe guide device for a perforation depth detector for oil and gas wells, which specifically includes: a probe 1, a lubrication assembly and a reversing assembly. The reversing assembly is connected to the lower part of the lubrication assembly. The probe 1 passes through the lubrication assembly from above, changes direction through the reversing assembly, and then extends into the perforation channel to measure the channel depth.

[0020] The lubrication assembly includes an upper joint 3 and a lower joint 16, the top end of the lower joint 16 is screwed into the upper joint 3 and fixed to the upper joint 3, and corresponding through holes are respectively provided in the middle of the upper joint 3 and the lower joint 16, and the diameter of the through hole matches the probe 1, and the lubricating oil is injected into the pore between the upper joint 3 and the lower joint 16, and the probe 1 extends from the through hole of the upper joint 3, and extends from the through hole of the lower joint 16 after contacting the lubricating oil in the upper joint 3, so as to have a lubricating effect for subsequent actions.

[0021] Among them, an oil filling hole is provided on the side of the upper joint 3, and a sealing screw 7 is provided in the oil filling hole. During operation, after removing the sealing screw 7, lubricating oil can be injected into the upper joint 3 through the oil filling hole. A fourth sealing ring 8 is provided on the sealing screw 7 to seal the sealing screw 7 and the oil filling hole to prevent the lubricating oil from leaking or foreign objects from entering and contaminating the lubricating oil.

[0022] Furthermore, an oil tank sealing head 9 is provided inside the upper joint 3. The oil tank sealing head 9 is arranged concentrically with the upper joint 3. A gap is left between the upper half of the oil tank sealing head 9 and the upper joint 3, and the lower half is tightly connected to the upper joint 3. The pore portion between the oil tank sealing head and the upper joint 3 is set as an oil chamber 6, and lubricating oil is injected into the oil chamber 6. A plurality of oil holes 10 pointing to the probe 1 are provided on the side of the oil tank sealing head 9. The lubricating oil in the oil chamber 6 contacts the probe 1 through the oil hole 10 to lubricate the probe 1. While ensuring the lubrication effect of the device, the space required to inject the lubricating oil is reduced, the amount of lubricating oil used is saved, and the economy is improved.

[0023] Among them, an intermediate joint 13 is provided between the lower joint 16 and the lower joint 16 below the oil tank sealing head 9, and a through hole corresponding to the position of the upper joint 3 is provided in the middle of the intermediate joint 13. The upper end of the intermediate joint 13 is inserted into the bottom end of the oil tank sealing head 9, and the lower end contacts the lower joint 16. During installation, the intermediate joint 13 can be fixed to the oil tank sealing head 9 by tightening the lower joint 16 to move upward, so as to prevent the unstable position of the components during use of the device from causing the wear of the probe 1. The main function of the oil tank sealing head 9 and the intermediate joint 13 is to form a straight channel in the upper joint 3 and the lower joint 16 through the through hole corresponding to the upper joint 3, so as to prevent the probe 1 from bending in the upper joint 3 after being stressed during use, thereby improving the stability of the device.

[0024] It should be noted that a plurality of first sealing rings 2 are provided on the outside of the top of the upper joint 3 to ensure the sealing performance of the upper joint 3 and the upper equipment; a second sealing ring 4 is provided on the top of the middle through hole of the oil tank sealing head 9 to prevent the lubricating oil from escaping upward from the equipment along the through hole during use and to prevent the waste of lubricating oil; a third sealing ring 5 is provided between the oil tank sealing head 9 above the oil chamber 6 and the upper joint 3, and a plurality of fifth sealing rings 11 are provided between the oil tank sealing head 9 below the oil chamber 6 and the upper joint 3. The third sealing ring 5 and the fifth sealing ring 11 prevent the lubricating oil in the oil chamber 6 from escaping to both sides and ensure the sealing performance of the oil chamber 6; a plurality of sixth sealing rings 12 are provided between the intermediate joint 13 and the oil tank sealing head 9 to ensure the tight combination of the intermediate joint 13 and the oil tank sealing head 9; a seventh sealing ring 14 and an eighth sealing ring 15 are provided on the inner side of the through hole in the intermediate joint 13 to ensure the airtightness of the device and to prevent the lubricating oil in the device from flowing out or other liquids from entering the upper joint 3 to contaminate the lubricating oil when the probe 1 is recovered.

[0025] like Figure 1As shown, an annular component is provided below the lubrication component, and the annular component includes a wheel groove fixing plate 17. The wheel groove fixing plate 17 is provided with a track formed by two rows of arc-shaped groove wheel groups parallel to each other. Each wheel groove group is composed of a plurality of groove wheels 19. Each groove wheel 19 can rotate freely in the circumferential direction. The probe 1 extends into the gap between the two groove wheel groups. The angle between the entrance direction and the exit direction of the track is 90 degrees. When the upper probe 1 extends from the lower joint 16 and enters the entrance of the track, the direction of the probe 1 is changed from the vertical direction to the horizontal direction under the guidance of the arc-shaped groove wheel group. The probe 1 is excessively smooth and has little effect on the probe 1. In this process, since the probe 1 contacts the lubricating oil when passing through the lubrication component, the groove wheel 19 in the groove wheel group acts as a bearing, which reduces the friction force on the probe 1, reduces the wear degree of the probe 1, ensures the strength of the probe 1, and greatly improves the accuracy of the device in detecting the depth of the perforating channel.

[0026] Among them, an axle pin hole 22 is provided at a position corresponding to the groove wheel 19 on the wheel groove fixing plate 17, and an axle pin 20 is provided in the axle pin hole 22. The axle pin 10 passes through the groove wheel 19 to fix the groove wheel 19. The groove wheel 19 can rotate freely in the circumferential direction around the axle pin 20. The diameters on both sides of the groove wheel 19 are larger than the diameter in the middle of the groove wheel 19, forming a groove matching the probe 1, further reducing the friction force on the probe 1.

[0027] Furthermore, the gap between each adjacent groove wheel 19 in the groove wheel group is smaller than the diameter of the probe 1, so as to prevent the probe 1 from jumping into the groove when encountering resistance during the movement of the probe 1, thereby improving the stability of the device.

[0028] like Figure 2 As shown, further, the groove wheel fixing plate 17 is composed of a left clamping plate 21 and a right clamping plate 24 arranged in parallel, and the left clamping plate 21 and the right clamping plate 24 are arranged symmetrically. A plurality of screw holes 23 corresponding to the positions are provided on the left clamping plate 21 and the right clamping plate 24, and screws 18 are provided in the screw holes 23 to connect the left clamping plate 21 and the right clamping plate 24 together. When the groove wheel 19 is damaged during use, the left clamping plate 21 and the right clamping plate 24 can be separated by removing the screws 18, and then the groove wheel 19 can be replaced, making the maintenance and replacement of the device more convenient.

[0029] Among them, according to the different on-site environments and work contents during use, the direction and movement trajectory of the probe 1 can be further adjusted by changing the arrangement of the sheaves 19 in the sheave group, so as to be suitable for other similar detection equipment or working environments.

[0030] The probe guide device of the perforation depth detector for oil and gas wells provided by the present invention can realize the change of the direction of the probe without rotation, and at the same time greatly reduces the friction force on the probe, reduces the wear degree of the probe, and improves the measurement efficiency. The specific operation process of the device is as follows: Step 1: Install the lubrication mechanism and reversing mechanism as shown in the figure.

[0031] Step 2: Unscrew the sealing screw, inject lubricating oil into the upper joint, and then tighten the sealing screw.

[0032] Step three, insert the probe downward, at this time, the probe comes into contact with the lubricating oil in the lubrication assembly, extends out of the lubrication assembly and enters the reversing assembly. Since the track is arc-shaped, the direction of the probe moving along the track changes from vertical to horizontal without bending and rotating the probe. At the same time, due to the presence of lubricating oil on the surface of the probe, after cooperating with the groove wheel that can rotate freely circumferentially, the friction force on the probe is greatly reduced. At this time, the probe extends out of the reversing assembly in the horizontal direction.

[0033] Step 4: When the extended length of the probe reaches the predetermined requirement, measurement is performed.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A probe guide device for a perforation depth detector for oil and gas wells, characterized in that: include: A probe (1), a lubrication assembly and a reversing assembly, wherein the reversing assembly is connected to the bottom of the lubrication assembly; the lubrication assembly comprises an upper joint (3), and lubrication oil is filled in the upper joint (3); the lower joint (16) is connected to the bottom of the upper joint (3), and the lower joint (16) and the upper joint (3) are respectively provided with through holes corresponding to the positions, and the through holes of the upper joint (3) and the lower joint (16) match the size of the probe (1), and the probe (1) passes through the upper joint (3) and passes out from the lower joint (16); The reversing assembly comprises a groove wheel fixing plate (17), the groove wheel fixing plate (17) being mounted below the lower joint (16), a track formed by two rows of mutually parallel arc-shaped groove wheel groups being arranged in the middle of the groove wheel fixing plate (17), the probe (1) extending into a gap between the two groove wheel groups, each groove wheel group being composed of a plurality of groove wheels (19), each groove wheel (19) being able to rotate freely in a circumferential direction, the exit and entrance directions of the track being at an angle of 90 degrees, and the probe (1) entering the entrance of the track after passing through the lower joint (16).

2. The probe guide device of the perforation depth detector for oil and gas wells according to claim 1, characterized in that: An oil outlet hole is provided on the side of the upper joint (3), a sealing screw (7) is provided in the oil filling hole, and a fourth sealing ring (8) is provided on the sealing screw (7).

3. The probe guide device of the perforation depth detector for oil and gas wells according to claim 1, characterized in that: An oil tank sealing head (9) is provided in the upper joint (3); the portion between the oil reservoir sealing head (9) and the upper joint (3) is provided as an oil chamber (6); the oil chamber (6) is filled with lubricating oil; a plurality of oil holes are provided on the oil tank sealing head (9); and a through hole corresponding to the position of the upper joint (3) is provided in the middle of the oil tank sealing head (9).

4. The probe guide device of the perforation depth detector for oil and gas wells according to claim 3 is characterized in that: An intermediate joint (13) is provided between the lower part of the oil tank sealing head (9) and the lower joint (16); the lower part of the intermediate joint (13) contacts the lower joint (16) and the upper part is inserted into the bottom end of the oil tank sealing head (9); a through hole corresponding to the position of the upper joint (3) is provided in the middle of the intermediate joint (13).

5. The probe guide device of the perforation depth detector for oil and gas wells according to claim 1, characterized in that: A plurality of first sealing rings (2) are provided at the top end of the upper joint (3).

6. The probe guide device of the perforation depth detector for oil and gas wells according to claim 3, characterized in that: A second sealing ring (4) is provided at the top of the through hole of the oil tank sealing head (9), a third sealing ring (5) is provided between the upper joint (3) above the oil chamber (6) and the oil tank sealing head (9), a plurality of fifth sealing rings (11) are provided between the upper joint (3) below the oil chamber (6) and the oil tank sealing head (9), a plurality of sixth sealing rings (12) are provided between the oil tank sealing head (9) and the intermediate joint (13), and a plurality of eighth sealing rings (15) are provided inside the through hole of the intermediate joint (13).

7. The probe guide device of the perforation depth detector for oil and gas wells according to claim 1, characterized in that: The gap between adjacent groove wheels (19) in each groove wheel set is smaller than the diameter of the probe (1).

8. The probe guide device of the perforation depth detector for oil and gas wells according to claim 1, characterized in that: The groove wheel fixing plate (17) is composed of two parallel arranged left clamping plates (21) and right clamping plates (24).

9. The probe guide device of the perforation depth detector for oil and gas wells according to claim 7, characterized in that: A plurality of screw holes (23) at corresponding positions are provided on the left clamping plate (21) and the right clamping plate (24), and screws (18) are provided in the screw holes (23) to fix the left clamping plate (21) and the right clamping plate (24).

10. The probe guide device of the perforation depth detector for oil and gas wells according to claim 1 or 8, characterized in that: An axle pin hole (22) is provided on the groove wheel fixing plate (17) at a position corresponding to the groove wheel (19), and an axle pin (20) is provided in the axle pin hole (22) for fixing the groove wheel (19).

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