Seismometer well descending device

Abstract

The utility model relates to the technical field of geophysical prospecting, and provides a seismometer well descending device which comprises an outer box body used for being connected with a traction rope, a plurality of sliding grooves arranged at intervals are formed in the periphery of the outer box body in the circumferential direction, and the sliding grooves are vertically arranged; the inner box body is located in the outer box body, and the seismometer body is movably arranged in the inner box body; the sliding block is arranged in the sliding groove in a lifting mode, and a mounting groove is formed in the sliding block; the guide ring is oval and is movably arranged relative to the sliding block, the guide ring is close to or far away from the sliding block after moving, the long axis direction of the guide ring is vertical, and the guide ring is used for abutting against the inner wall of the well in a sliding mode; and the first compression spring is arranged in the mounting groove, one end acts on the side wall of the mounting groove, the other end acts on the guide ring, and the guide ring compresses the first compression spring after moving into the mounting groove. By means of the technical scheme, the problem that in the prior art, the seismometer is prone to being vibrated and damaged due to the lack of vibration buffering when the seismometer is put down is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to geophysical prospecting technical field especially relates to a seismometer downhole device. BACKGROUND

[0002] The seismometer is placed in the well and can monitor the earthquake of the nearby area, and generally uses the downhole device to place the seismometer in the bottom of the well.

[0003] In the existing downhole device, the seismometer is placed by the traction rope controlled by the winch, and the radial telescopic roller is used to roll and support the inner wall of the well to reduce the vibration of the seismometer during the placement, but in the actual operation process, the inner wall of the well is not a smooth arc surface, and the rotation of the roller may be damaged by the particles and dust, which causes the roller to be unable to rotate normally and affects the service life, and when the roller that cannot rotate collides with the protrusions of the inner wall of the well, the vibration buffer is lacking, which causes the seismometer to vibrate and easily causes the damage of the seismometer.

[0004] In the prior art, the problem of lacking vibration buffer when placing the seismometer needs to be solved. UTILITY MODEL CONTENTS

[0005] The utility model solves the problem of lacking vibration buffer when placing the seismometer in the prior art.

[0006] The utility model adopts the technical scheme that provides a seismometer downhole device, which comprises:

[0007] An outer box body is used for connecting with the traction rope, and a plurality of sliding grooves are arranged at intervals in the periphery of the outer box body in the circumferential direction, and the sliding grooves are vertically arranged;

[0008] An inner box body is located inside the outer box body, and the seismometer body is movably arranged in the inner box body;

[0009] A sliding block is movably arranged in the sliding groove, and the sliding block is provided with a mounting groove;

[0010] A guide ring is elliptical, movably arranged relative to the sliding block, and the guide ring is close to or away from the sliding block after moving, the long axis direction of the guide ring is vertically arranged, and the guide ring is used for slidingly abutting against the inner wall of the well;

[0011] A first compression spring is arranged in the mounting groove, one end of the first compression spring acts on the side wall of the mounting groove, and the other end of the first compression spring acts on the guide ring, and the guide ring is moved into the mounting groove, and the first compression spring is compressed.

[0012] Further optimization of the technical scheme, the guide ring is arranged to swing up and down relative to the sliding block, the length of the mounting groove in the vertical direction is greater than the diameter of the first compression spring, the first compression spring is arranged to swing up and down in the mounting groove, and the first compression spring swings up and down along with the guide ring.

[0013] Further optimization of the technical scheme, when the sliding block is located at the lower side in the mounting groove, the lower part of the guide ring extends below the outer box body.

[0014] Further optimization of the technical scheme, the technical scheme further comprises:

[0015] A second compression spring is arranged in the outer box body, the upper end of the second compression spring is arranged at the top end in the outer box body, and the lower end of the second compression spring is arranged at the upper end outside the inner box body.

[0016] An electric push rod is arranged at the upper side in the inner box body and is used for driving the seismometer main body to move to the outside of the inner box body.

[0017] A bottom plate is arranged at the lower part of the inner box body in a plug-in mode, and the seismometer main body is arranged at the upper side of the bottom plate.

[0018] Further optimization of the technical scheme, the lower part of the inner box body has a plurality of buckles in an annular shape, and the buckles are connected to the lower end of the bottom plate.

[0019] Further optimization of the technical scheme, the lower end of the bottom plate has a plurality of avoiding grooves.

[0020] Further optimization of the technical scheme, the technical scheme further comprises:

[0021] A plurality of third compression springs are arranged between the outer annular wall of the inner box body and the inner annular wall of the outer box body, one end of the third compression spring is arranged to act on the inner wall of the outer box body, and the other end of the third compression spring is arranged to act on the outer wall of the inner box body.

[0022] The utility model discloses the beneficial effect lies in:

[0023] 1, the outer wall of the guide ring of oval shape is slidably connected with the inner wall of the well, has greater arc-shaped guide surface, can be well guided and avoided the obstacles such as well wall protruding object, reduces direct collision, reduces oscillation. The guide ring can also compress the first compression spring to move into the mounting groove, play the role of buffering, and can adapt to the change of the diameter of the well.

[0024] 2, the guide ring can drive the sliding block to slide up and down in the sliding groove, when the lower end of the guide ring is suddenly blocked by a larger protruding object, the sliding block can slide up relative to the outer box body, reducing the collision and oscillation transmission to the outer box body. DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 is a front view structural schematic diagram of the utility model;

[0027] Figure 3 is a bottom structure schematic diagram of the utility model; Figure 2 is a A-A position cross-sectional structure schematic diagram of the utility model;

[0028] Figure 4 is a bottom structure schematic diagram of the utility model; Figure 3 is a a place local amplification structure schematic diagram of the utility model;

[0029] Figure 5 is a bottom structure schematic diagram of the utility model;

[0030] Marking in the drawing: 1, outer box body;101, traction rope;102, sliding groove;103, second compression spring;104, third compression spring;2, inner box body;201, buckle;3, sliding block;301, installation groove;302, first compression spring;4, guide ring;5, electric push rod;6, bottom plate;601, avoiding groove;7, seismometer body. DETAILED DESCRIPTION

[0031] The utility model will be explained further in detail in combination with the drawings and specific implementation.

[0032] In order to make the drawing simple, only the part relevant to the utility model is shown in each drawing, and it does not represent the actual structure of the product as a product.In addition, in order to make the drawing simple and convenient to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked.In this paper, "one" not only means "only one", but also can mean "more than one", and "several" includes "two" and "more than two".

[0033] In this paper, it is necessary to point out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0034] In addition, in the description of the present application, the terms "first", "second" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0035] As Figures 1-5As shown, a seismic meter downhole device comprises: an outer box 1 for connecting with a traction rope 101, the outer box 1 has a plurality of spaced sliding grooves 102 circumferentially arranged on the outer box 1, and the sliding grooves 102 are vertically arranged; an inner box 2 is arranged inside the outer box 1, and a seismic meter body 7 is movably arranged in the inner box 2; a sliding block 3 is vertically arranged in the sliding groove 102, and the sliding block 3 has a mounting groove 301; a guide ring 4 is elliptical, and is movably arranged relative to the sliding block 3; the guide ring 4 moves to be close to or away from the sliding block 3, and the long axis direction of the guide ring 4 is vertically arranged; the guide ring 4 is used for slidingly abutting against the inner wall of the well; and a first compression spring 302 is arranged in the mounting groove 301, one end of the first compression spring 302 acts on the side wall of the mounting groove 301, and the other end of the first compression spring 302 acts on the guide ring 4; when the guide ring 4 moves into the mounting groove 301, the first compression spring 302 is compressed.

[0036] In use, the upper end of the outer box 1 can be connected with the traction rope 101 for downhole operation, and the outer box 1 can be arranged at equal angles around the annular four sliding grooves 102; the guide ring 4 is used for slidingly abutting against the inner wall of the well; the four guide rings 4 can be used for abutting against each other, or some of the guide rings 4 can be used for slidingly abutting against the inner wall of the well; when the device is lowered, the outer wall of the guide ring 4 slides against the inner wall of the well; when the device encounters protrusions such as staggered gaps and small protrusions on the inner wall of the well, the lower part of the elliptical guide ring 4 is arc-shaped, which can play a guiding role, reduce direct impact, and reduce the shaking of the outer box 1; the guide ring 4 can compress the first compression spring 302 to move into the mounting groove 301, thereby playing a buffering role and reducing the shaking of the outer box 1; when the device encounters relatively large protrusions, the lower arc surface of the guide ring 4 can still play a guiding role; at this time, the guide ring 4 can still be subjected to a relatively large upward force, and the sliding block 3 can be moved upward in the sliding groove 102 to reduce the force of direct impact and the shaking of the outer box 1; after the device passes the obstacle, the sliding block 3 naturally slides downward to the bottom end of the sliding groove 102 under the action of gravity.

[0037] The lower end of the sliding block 3 can be provided with a rubber pad or the like, and the sliding block 3 can play a buffering role when sliding downward to the bottom end of the sliding groove 102.

[0038] The inner box 2 can be fixedly or movably arranged in the outer box 1, and the seismic meter body 7 can be arranged in the inner box 2 according to the prior art; after reaching the bottom of the well, the seismic meter body moves downward relative to the inner box 2 to the outside of the inner box 2 and the outer box 1, and is placed at the bottom of the well, thereby completing the lowering operation.

[0039] The sliding block 3 and the sliding groove 102 can rely on friction to reduce the sliding speed. The sliding groove 102 can semi-surround the sliding block 3 to prevent the sliding block 3 from being separated from the sliding groove 102.

[0040] Further, the guide ring 4 is arranged to swing upward and downward relative to the sliding block 3, the length of the mounting groove 301 in the vertical direction is greater than the diameter of the first compression spring 302, the first compression spring 302 is arranged to swing upward and downward in the mounting groove 301, and the first compression spring 302 swings upward and downward together with the guide ring 4.

[0041] In use, the vertical length of the installation groove 301 provides space for the up-and-down swing of the first compression spring 302, and when the guide ring 4 is blocked by a large obstacle, the guide ring 4 can move upward relative to the outer box body 1, and at the same time, upward swing can also occur, the end of the first compression spring 302 connected with the guide ring 4 swings upward, and plays a buffering role.

[0042] One end of the first compression spring 302 is fixed on the sliding block 3, and can be compressed and buffered in the axial direction, and at the same time, can swing a small distance in the vertical direction. Similarly, after the seismometer main body is lowered, the traction rope 101 still needs to hoist the outer box body 1 and the inner box body 2 out, and during the upward movement, the guide ring 4 still slides and abuts against the well wall, and when an obstacle is encountered, it guides and avoids or swings downward to buffer.

[0043] Further, when the sliding block 3 is located at the lower side in the installation groove 301, the lower part of the guide ring 4 extends to below the outer box body 1.

[0044] In use, the lower side of the guide wire ring protrudes from the lower end of the outer box body 1 and the inner box body 2, and when the bottom of the well is touched, the guide ring 4 first contacts the bottom of the well to buffer, and then the outer box body 1 and the inner box body 2 continue to lower, the guide ring 4 moves upward relative to the outer box body 1, avoiding direct and rapid impact on the bottom of the well, and playing a protection role.

[0045] Further, it further comprises: a second compression spring 103 arranged in the outer box body 1, the upper end of the second compression spring 103 is arranged at the top end in the outer box body 1, and the lower end of the second compression spring 103 is arranged at the outer upper end of the inner box body 2; an electric push rod 5 arranged on the upper side in the inner box body 2, used for driving the seismometer main body to move to the outside of the inner box body 2; and a bottom plate 6 inserted and arranged at the lower part of the inner box body 2, and the seismometer main body is arranged on the upper side of the bottom plate 6.

[0046] In use, the inner box body 2 is hoisted inside the outer box body 1 through the second compression spring 103, which can play a buffering role, reducing the transmission of vibration to the seismometer main body in the inner box body 2. The bottom plate 6 is inserted at the bottom of the inner box body 2, and drags the seismometer main body, which can be pushed out by the electric push rod 5 at the same time, and placed at the bottom of the well, which is the prior art.

[0047] Further, the inner box body 2 has a plurality of buckles 201 along the annular lower part, and the buckles 201 are clamped at the lower end of the bottom plate 6.

[0048] In use, the buckles 201 at the lower part of the inner box body 2 can clamp and position the bottom plate 6, avoiding the bottom plate 6 from uncontrollably separating from the inner box body 2, causing the seismometer main body to fall, and making the use safer. When the electric push rod 5 pushes the seismometer main body to lower, the buckles 201 are deformed under stress, and the bottom plate 6 can be separated.

[0049] Further, the bottom plate 6 has a plurality of avoidance grooves 601 at the lower end.

[0050] In use, the avoiding slot 601 at the lower end of the bottom plate 6 can be used to accommodate sundries at the well bottom, so that the bottom plate 6 can be placed more stably at the well bottom, and the placing stability is improved. The avoiding slot 601 is in a blind hole structure, higher sundries can be pressed down, and the sundries can be prevented from directly pressing against the seismometer main body.

[0051] Further, the third compression springs 104 are arranged between the outer annular wall of the inner box 2 and the inner annular wall of the outer box 1, one end of the third compression spring 104 is arranged to act on the inner wall of the outer box 1, and the other end is arranged to act on the outer wall of the inner box 2.

[0052] In use, the inner box 2 and the outer box 1 are annularly spaced in the radial direction, can be filled with buffer foam, or the third compression spring 104 can be arranged to play a buffering role, and the vibration of the inner box 2 is reduced.

[0053] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A geophone downhole device, characterized by, The utility model relates to a seismic sensor, including: The outer box (1) is used for being connected with the traction rope (101), and the outer box (1) periphery has a plurality of interval setting chute (102) along the circumference, and the chute (102) is vertically arranged; The inner box (2) is located inside the outer box (1), and the seismic sensor body (7) is movably arranged in the inner box (2); The slider (3) is vertically arranged in the chute (102), and the slider (3) has a mounting groove (301) on it; The guide ring (4) is elliptical, and is movably arranged relative to the slider (3), the guide ring (4) is close to or away from the slider (3) after moving, the long axis direction of the guide ring (4) is vertically arranged, and the guide ring (4) is used for slidingly abutting with the well wall; The first compression spring (302) is arranged in the mounting groove (301), one end of the first compression spring (302) acts on the side wall of the mounting groove (301), and the other end of the first compression spring (302) acts on the guide ring (4), and the guide ring (4) moves into the mounting groove (301) and compresses the first compression spring (302).

2. A borehole geophone assembly according to claim 1, wherein, The guide ring (4) is swingably arranged relative to the slider (3), the length of the mounting groove (301) in the vertical direction is greater than the diameter of the first compression spring (302), the first compression spring (302) is swingably arranged in the mounting groove (301), and the first compression spring (302) swings up and down along with the guide ring (4).

3. A borehole geophone assembly according to claim 1, wherein: When the slider (3) is located in the lower side of the mounting groove (301), the lower part of the guide ring (4) extends below the outer box (1).

4. A borehole geophone assembly according to claim 1 wherein, Further including: The second compression spring (103) is arranged in the outer box (1), and the upper end of the second compression spring (103) is arranged at the top end in the outer box (1), and the lower end of the second compression spring (103) is arranged at the upper end outside the inner box (2); The electric push rod (5) is arranged on the upper side in the inner box (2) and is used for driving the seismic sensor body to move to the outside of the inner box (2); The bottom plate (6) is inserted and arranged at the lower part of the inner box (2), and the seismic sensor body is arranged on the upper side of the bottom plate (6).

5. A borehole geophone assembly according to claim 4, wherein: The lower part of the inner box (2) has a plurality of buckles (201) along the annular, and the buckle (201) is clamped at the lower end of the bottom plate (6).

6. A borehole geophone assembly according to claim 4, wherein: The lower end of the bottom plate (6) has a plurality of avoidance grooves (601).

7. A borehole geophone assembly according to claim 1 wherein, Further including: The third compression spring (104) has a plurality of, the third compression spring (104) is located between the outer annular wall of the inner box (2) and the inner annular wall of the outer box (1), one end of the third compression spring (104) acts on the inner wall of the outer box (1), and the other end of the third compression spring (104) acts on the outer wall of the inner box (2).

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