CN220415342U

CN220415342U - Density pushing structure and natural gamma density lateral well diameter combined logging instrument

Info

Publication number: CN220415342U
Application number: CN202321916160.1U
Authority: CN
Inventors: 刘玉静; 原波; 魏秋园
Original assignee: Beijing Zhong Di Ying Jie Geophysical Exploration Instrument Institute Co ltd
Current assignee: Beijing Zhong Di Ying Jie Geophysical Exploration Instrument Institute Co ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2024-01-30
Anticipated expiration: 2033-07-20

Abstract

The utility model relates to a density pushing structure and a natural gamma density lateral well diameter combined logging instrument, wherein the pushing structure comprises an outer tube, a driving assembly, a piston and a well diameter arm, the inner part of the outer tube is hollow, and measuring holes penetrating through the outer part and the inner part are arranged on the side wall of the outer tube; the well diameter arm is rotatably arranged at the measuring hole, and one end of the well diameter arm penetrates through the measuring hole and extends into the outer tube; the piston is eccentrically arranged in the outer tube and is in transmission connection with one end of the well diameter arm; the driving assembly is arranged in the outer tube, is in transmission connection with the piston through the transmission piece and is used for driving the piston to slide back and forth along the axial direction of the outer tube and driving the well diameter arm to rotate until the other end of the well diameter arm extends out of the outer tube or is contained in the measuring hole. The utility model has the advantages of simple structure, reasonable design, realization of rapid measurement of the well diameter, realization of the adhesion between equipment and the well wall and very convenient measurement.

Description

Density pushing structure and natural gamma density lateral well diameter combined logging instrument

Technical Field

The utility model relates to the technical field of logging instruments, in particular to a density pushing structure and a natural gamma density lateral well diameter combined logging instrument.

Background

The logging instrument is used in geophysical logging field, and is one application technological discipline for measuring various physical information of rock stratum in well by means of geophysical method, researching geological profile of oil-gas field, coal field, etc. and solving some technological problems of underground geology, production and drilling.

Specifically, the method is a method for measuring geophysical parameters such as conductivity, acoustic properties, radioactivity, electrochemical properties and the like of the rock stratum along a drilling section by a downhole special instrument. Logging is a vast number of methods, acoustic, electrical, and radioactive being the only most basic. Each logging method can only indirectly and conditionally reflect one side of the rock stratum characteristic, and various logging methods should be comprehensively applied to comprehensively know the underground geological condition and discover and evaluate the hydrocarbon reservoir.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art by providing a density pushing structure and a natural gamma density lateral well diameter combined logging instrument.

The technical scheme for solving the technical problems is as follows:

the density pushing structure comprises an outer tube, a driving assembly, a piston and a well diameter arm, wherein the inner part of the outer tube is hollow, and measuring holes penetrating through the outer wall and the inner wall are formed in the side wall of the outer tube; the caliper arm is rotatably arranged at the measuring hole, and one end of the caliper arm penetrates through the measuring hole and extends into the outer tube; the piston is eccentrically arranged in the outer tube and is in transmission connection with one end of the well diameter arm; the driving assembly is arranged in the outer tube, is in transmission connection with the piston through a transmission piece, and is used for driving the piston to slide back and forth along the axial direction of the outer tube and driving the well diameter arm to rotate until the other end of the well diameter arm extends out of the outer tube or is contained in the measuring hole.

The beneficial effects of the utility model are as follows: in the well diameter measuring process, the driving assembly drives the piston to slide along the axis of the outer tube through the transmission piece, and the well diameter arm is rotated by utilizing the transmission connection of the piston and the well diameter arm, so that the other end of the well diameter arm is attached to a well wall, and the radius of the well is measured, so that the measurement is convenient;

when not measuring, the drive assembly can drive the piston to reversely slide through the transmission piece, and the well diameter arm is accommodated in the measuring hole.

The utility model has simple structure and reasonable design, can realize the rapid measurement of the well diameter and has very convenient measurement.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the well diameter arm is of an arc plate-shaped structure, and the middle of the well diameter arm is rotatably connected with the wall of the measuring hole through a rotating shaft.

The further scheme has the beneficial effects of simple structure and reasonable design, and the special structure of the well diameter arm can be used for realizing connection with the piston and measuring the well radius.

Further, the circle center angle of the well diameter arm is in the range of 0-40 degrees.

The beneficial effect of adopting above-mentioned further scheme is simple structure, and the appearance design of well bore arm is reasonable, convenient rotation and measurement.

Further, one end of the well diameter arm is provided with a penetrating bayonet, the piston is fixedly provided with a bayonet, and the bayonet extends into the bayonet and is rotationally attached to the bayonet.

The beneficial effect of adopting above-mentioned further scheme is simple structure, reasonable in design, utilizes the rotation laminating of bayonet lock and bayonet socket to realize the transmission connection between piston and the caliper arm to realize the connection of piston and caliper arm, and can not take place the slippage.

Further, the driving assembly comprises a motor and a screw rod, the motor is fixedly arranged in the outer tube, the driving end of the motor is connected with one end of the screw rod, and the other end of the screw rod extends along the axial direction of the outer tube; the screw rod is provided with a screw nut in a threaded sleeve manner, the other end of the screw rod is also provided with a pushing spring in a sleeved manner, and two ends of the pushing spring are respectively abutted to the screw nut and the transmission piece.

The technical scheme has the advantages that when the screw rod is used, the motor drives the screw rod to rotate, and the screw rod is in threaded connection with the screw rod to realize the linear movement of the screw rod along the axial direction of the screw rod; the nut extrudes the pushing spring, the pushing spring is used for pushing the transmission piece and the piston to slide, the structure is simple, and the design is reasonable;

in addition, the pushing spring is designed to play a certain buffering role, so that rigid contact between the screw rod and the piston is avoided, and the service life of the piston is prolonged.

The device further comprises a limit switch and a controller, wherein the limit switch is fixedly arranged in the outer tube, is positioned between the screw nut and the transmission piece and is used for detecting the position of the screw nut; and the limit switch and the motor are respectively in communication connection with the controller.

The beneficial effect of adopting above-mentioned further scheme is that in the measurement process, utilize limit switch real-time supervision screw to remove to give the controller with corresponding position signal, the controller receives corresponding position signal, and judges the distance that the piston moved according to corresponding position signal, control motor's start and stop simultaneously, prevent that the piston from removing excessively, simple structure, reasonable in design.

Further, the screw rod is a trapezoidal screw rod, and the trapezoidal screw rod is connected with the driving end of the motor through a thrust bearing.

The trapezoidal screw has the advantages of high transmission power, accurate positioning and the like; moreover, the bearing capacity is large, and the self-locking function is achieved.

Further, the transmission piece comprises a middle joint, one end of the middle joint is abutted with one end of the pushing spring, and the other end of the middle joint is in transmission connection with the piston.

The beneficial effect of adopting above-mentioned further scheme is simple structure, reasonable in design, utilizes the middle joint to realize the transmission connection between lead screw and the piston, and is convenient to connect.

Further, the middle joint is hollow and is open at two ends, a spring seat is arranged in the middle joint, and one end of the spring seat extends out of the corresponding end of the middle joint and is fixedly connected with the corresponding end of the piston; the spring seat is provided with an annular groove, a protection spring is sleeved in the annular groove, and two ends of the protection spring are respectively abutted to the bottom of the annular groove and a fixed seat fixedly installed in the middle joint.

The beneficial effect of adopting above-mentioned further scheme is that when there is resistance in the well, can utilize the protection spring to realize certain buffering, protect whole equipment.

The utility model also relates to a natural gamma density lateral well diameter combined logging instrument which comprises the density pushing structure.

The utility model also provides a natural gamma density lateral well diameter combined logging instrument which has the advantages of simple structure, reasonable design, realization of rapid well diameter measurement, realization of equipment and well wall adhesion and convenient measurement.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is an enlarged view of a in fig. 1.

In the drawings, the list of components represented by the various numbers is as follows:

1. an outer tube; 2. a piston; 3. a well bore arm; 4. measuring holes; 5. a bayonet; 6. a bayonet lock; 7. a motor; 8. a screw rod; 9. a nut; 10. a pushing spring; 11. a limit switch; 12. a thrust bearing; 13. a middle joint; 14. a spring seat; 15. and protecting the spring.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a density pushing structure, which includes an outer tube 1, a driving assembly, a piston 2 and a caliper arm 3, wherein the inner portion of the outer tube 1 is hollow, and a measuring hole 4 penetrating inside and outside is provided on the side wall of the outer tube 1; the caliper arm 3 is rotatably arranged at the measuring hole 4, and one end of the caliper arm extends into the outer tube 1 through the measuring hole 4; the piston 2 is coaxially arranged in the outer tube 1 and is in transmission connection with one end of the well diameter arm 3; the driving assembly is arranged in the outer tube 1, is in transmission connection with the piston 2 through a transmission piece, and is used for driving the piston 2 to slide back and forth along the axial direction of the outer tube 1 and driving the caliper arm 3 to rotate until the other end of the caliper arm extends out of the outer tube 1 or is accommodated in the measuring hole 4.

In the well diameter measuring process, the driving assembly drives the piston 2 to slide along the axis of the outer tube 1 through the transmission piece, and the well diameter arm 3 rotates by utilizing the transmission connection of the piston 2 and the well diameter arm 3, so that the other end of the well diameter arm 3 is attached to a well wall, and the radius of the well is measured, so that the measurement is convenient;

when not measuring, the drive assembly can drive the piston 2 to reversely slide through the transmission piece, and the caliper arm 3 is accommodated in the measuring hole 4.

Preferably, in this embodiment, the outer tube 1 is preferably a circular tube, and both ends thereof are open.

Preferably, in this embodiment, the piston 2 is preferably cylindrical.

Preferably, in this embodiment, the measuring hole 4 may be a square hole or a circular hole, and the size of the measuring hole may ensure that the caliper arm 3 normally rotates inside the caliper arm.

The embodiment has simple structure and reasonable design, can realize the rapid measurement of the well diameter, and is very convenient to measure.

Example 2

Based on embodiment 1, in this embodiment, the caliper arm 3 has an arc-shaped plate structure, and the middle portion of the caliper arm is rotatably connected with the wall of the measuring hole 4 through a rotating shaft.

The scheme has simple structure and reasonable design, and can realize the connection with the piston 2 and the measurement of the well radius by utilizing the special structure of the well diameter arm 3.

Preferably, in this embodiment, the rotating shaft is fixedly connected with the caliper arm 3, two ends of the rotating shaft extend to two sides of the caliper arm 3 respectively, and two ends of the rotating shaft are rotatably connected with two sides of a wall of the measuring hole 4 respectively.

Example 3

In this embodiment, the center angle of the well diameter arm 3 is in the range of 0-40 ° on the basis of embodiment 2.

The scheme has simple structure, reasonable design of the appearance of the well diameter arm 3 and convenient rotation and measurement.

Preferably, in this embodiment, the center angle of the well diameter arm 3 is preferably 20 °.

Example 4

In this embodiment, a through bayonet 5 is provided at one end of the caliper arm 3, and a bayonet 6 is fixedly mounted on the piston 2, and the bayonet 6 extends into the bayonet 5 and rotationally engages with the bayonet 5.

This scheme simple structure, reasonable in design utilizes bayonet lock 6 and bayonet socket 5's rotation laminating to realize the transmission between piston 2 and the caliper arm 3 and is connected to realize that piston 2 and caliper arm 3's connection, and can not take place the slippage.

Preferably, in this embodiment, the bayonet 5 is preferably an arc-shaped bayonet at the bottom, which is reasonable in design and convenient for rotationally attaching to the bayonet 6.

In addition, the bayonet 6 is arranged perpendicular to the piston 2, i.e. the bayonet 6 extends in the radial direction of the outer tube 1, and is designed reasonably to cooperate with the bayonet 5.

Example 5

On the basis of any one of the embodiment 1 to the embodiment 4, in the present embodiment, the driving assembly includes a motor 7 and a screw rod 8, the motor 7 is fixedly installed in the outer tube 1, a driving end of the motor is connected with one end of the screw rod 8, and the other end of the screw rod 8 extends along the axial direction of the outer tube 1; the screw rod 8 is sleeved with a screw nut 9 in a threaded manner, the other end of the screw rod 8 is sleeved with a pushing spring 10, and two ends of the pushing spring 10 are respectively abutted to the screw nut 9 and the transmission piece.

When the screw rod 8 is used, the motor 7 drives the screw rod 8 to rotate, and the screw nut 9 moves linearly along the axial direction of the screw rod 8 by utilizing the threaded connection between the screw rod 8 and the screw nut 9; the nut 9 extrudes the pushing spring 10, and the pushing spring 10 is used for pushing the transmission piece and the piston 2 to slide, so that the structure is simple, and the design is reasonable;

in addition, the pushing spring 10 is designed to play a certain buffering role, so that rigid contact between the screw rod 8 and the piston 2 is avoided, and the service life of the piston is prolonged.

Based on the scheme, the outer tube 1 is internally and fixedly provided with a mounting seat, and the motor 7 is fixedly arranged on the mounting seat.

Example 6

On the basis of embodiment 5, the present embodiment further includes a limit switch 11 and a controller, where the limit switch 11 is fixedly installed in the outer tube 1 and located between the nut 9 and the driving member, and is used for detecting the position of the nut 9; the limit switch 11 and the motor 7 are respectively in communication connection with the controller.

In the measuring process, the position of the movement of the screw 9 is monitored in real time by utilizing the limit switch 11, a corresponding position signal is sent to the controller, the controller receives the corresponding position signal, the moving distance of the piston 2 is judged according to the corresponding position signal, and meanwhile, the motor 7 is controlled to be started and stopped, so that the piston 2 is prevented from moving excessively, and the device is simple in structure and reasonable in design.

Based on the above, the screw 9 naturally stops moving after the motor 7 is turned off.

Example 7

In this embodiment, the screw rod 8 is a trapezoidal screw rod, and the trapezoidal screw rod is connected to the driving end of the motor 7 through a thrust bearing 12.

The trapezoidal screw has the characteristics of high transmission power, accurate positioning and the like; moreover, the bearing capacity is large, and the self-locking function is achieved.

In addition to the above embodiment, the above screw 8 may be a common screw, for example, a screw having a uniform diameter.

Example 8

In this embodiment, the transmission member includes a middle joint 13, one end of the middle joint 13 abuts against one end of the pushing spring 10, and the other end is in transmission connection with the piston 2.

The scheme has simple structure and reasonable design, the transmission connection between the screw rod 8 and the piston 2 can be realized by utilizing the middle joint 13, and the connection is convenient.

Preferably, in this embodiment, the middle joint 13 has a structure with a thin end and a thick end, and the thin end abuts against one end of the pushing spring 10.

Example 9

In this embodiment, on the basis of embodiment 8, the middle joint 13 is hollow and has two open ends, and a spring seat 14 is installed in the middle joint, and one end of the spring seat 14 extends out of the corresponding end of the middle joint 13 and is fixedly connected with the corresponding end of the piston 2; the spring seat 14 is provided with an annular groove, a protection spring 15 is sleeved in the annular groove, and two ends of the protection spring 15 are respectively abutted with the bottom of the annular groove and a fixed seat fixedly installed in the middle joint 13.

When there is resistance in the well, a protection spring 15 can be used to realize a certain buffer to protect the whole equipment.

Based on the scheme, the above-mentioned a plurality of parts that involve are the inside cavity and both ends open structure to supply the circuit to pass.

Example 10

Based on the above embodiments, the present embodiment further provides a natural gamma density lateral borehole diameter combination logging tool, including the density pushing structure as described above.

The embodiment also provides a natural gamma density lateral well diameter combined logging instrument which is simple in structure, reasonable in design, capable of realizing rapid measurement of well diameter, capable of realizing adhesion between equipment and a well wall and very convenient in measurement.

The working principle of the utility model is as follows:

during measurement, the motor 7 drives the screw rod 8 to rotate, the screw rod 8 is connected with the screw nut 9 through threads to enable the screw nut 9 to linearly move, the screw nut 9 extrudes the pushing spring 10 to enable the pushing spring 10 to compress, the pushing spring 10 pushes the middle joint 13 to move, the middle joint 13 drives the spring seat 14 to push the piston 2 to slide, and the piston 2 is jointed with the bayonet 5 through the rotation of the bayonet 6 on the piston 2 to drive the caliper arm 3 to rotate until the other end of the caliper arm 3 extends out of the outer tube 1 and is jointed with a well wall to measure the caliper; or is stored in the measuring hole 4, thereby saving space.

It should be noted that, all the electronic components related to the present utility model adopt the prior art, and the above components are electrically connected to the controller, and the control circuit between the controller and the components is the prior art.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A density pushing structure, characterized in that: the device comprises an outer tube (1), a driving assembly, a piston (2) and a well diameter arm (3), wherein the inner part of the outer tube (1) is hollow, and a measuring hole (4) penetrating through the outer wall and the inner wall is formed in the side wall of the outer tube; the caliper arm (3) is rotatably arranged at the measuring hole (4), and one end of the caliper arm extends into the outer tube (1) through the measuring hole (4); the piston (2) is eccentrically arranged in the outer tube (1) and is in transmission connection with one end of the well diameter arm (3); the driving assembly is arranged in the outer tube (1), is in transmission connection with the piston (2) through a transmission piece, and is used for driving the piston (2) to slide back and forth along the axial direction of the outer tube (1) and driving the well diameter arm (3) to rotate until the other end of the well diameter arm extends out of the outer tube (1) or is contained in the measuring hole (4).

2. The density pushing structure of claim 1 wherein: the well diameter arm (3) is of an arc plate-shaped structure, and the middle of the well diameter arm is rotatably connected with the wall of the measuring hole (4) through a rotating shaft.

3. The density pushing structure of claim 2, wherein: the circle center angle range of the well diameter arm (3) is 0-40 degrees.

4. A density pushing structure according to any one of claims 1-3, characterized in that: one end of the well diameter arm (3) is provided with a penetrating bayonet (5), a bayonet lock (6) is fixedly arranged on the piston (2), and the bayonet lock (6) extends into the bayonet (5) and is rotationally attached to the bayonet (5).

5. A density pushing structure according to any one of claims 1-3, characterized in that: the driving assembly comprises a motor (7) and a screw rod (8), the motor (7) is fixedly arranged in the outer tube (1), the driving end of the motor is connected with one end of the screw rod (8), and the other end of the screw rod (8) extends along the axial direction of the outer tube (1); the screw rod (8) is provided with a screw nut (9) in a threaded sleeve manner, the other end of the screw rod (8) is also provided with a pushing spring (10) in a sleeved manner, and two ends of the pushing spring (10) are respectively abutted with the screw nut (9) and the transmission piece.

6. The density pushing structure of claim 5 wherein: the device further comprises a limit switch (11) and a controller, wherein the limit switch (11) is fixedly arranged in the outer tube (1) and is positioned between the screw nut (9) and the transmission piece and used for detecting the position of the screw nut (9); the limit switch (11) and the motor (7) are respectively connected with the controller in a communication way.

7. The density pushing structure of claim 5 wherein: the screw rod (8) is a trapezoidal screw rod, and the trapezoidal screw rod is connected with the driving end of the motor (7) through a thrust bearing (12).

8. The density pushing structure of claim 5 wherein: the transmission piece comprises a middle joint (13), one end of the middle joint (13) is abutted with one end of the pushing spring (10), and the other end of the middle joint is in transmission connection with the piston (2).

9. The density pushing structure of claim 8 wherein: the middle joint (13) is hollow and is open at two ends, a spring seat (14) is arranged in the middle joint, and one end of the spring seat (14) extends out of the corresponding end of the middle joint (13) and is fixedly connected with the corresponding end of the piston (2); the spring seat (14) is provided with an annular groove, a protection spring (15) is sleeved in the annular groove, and two ends of the protection spring (15) are respectively abutted with the bottom of the annular groove and a fixed seat fixedly installed in the middle joint (13).

10. A natural gamma density lateral well diameter combination logging instrument is characterized in that: a density pushing structure comprising any of claims 1-9.