Novel lithologic density logging instrument

Abstract

The utility model discloses a novel lithologic density logging instrument which comprises two sets of fixing plates, four sets of fixing rods are jointly and fixedly connected between the two sets of fixing plates, adjusting assemblies are jointly arranged on the surfaces of the two sets of fixing plates, and the adjusting assemblies are used for adjusting the detection angle of the device. Cables are fixedly connected to the four edges of the upper surface of one fixing plate, through the design of the fixing rods, the adjusting assemblies, the cables and the fixing plates, when the device is used, the device can be placed in a well through the cables, in the placing process, the four fixing rods are very close to the inner wall of the well, and in addition, due to the design of the four cables, the device is convenient to use. The device can be prevented from large-amplitude swing, and in the using process, the detection angle can be adjusted through the adjusting assembly, so that the effect that detection is more comprehensive is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of well logging instruments, and in particular relates to a novel lithology density well logging instrument. Background Art

[0002] As we all know, the lithology density logging tool measures the volume density and photoelectric absorption index of the formation, using the gamma rays of the radioactive source in the downhole instrument to interact with the electrons of the atoms of the formation material. The main forms of interaction between gamma rays and formation electrons are the Compton effect and the photoelectric effect. The Compton effect reflects the electron density of the formation material, and the electron density is a direct reflection of the material density. The strength of the photoelectric effect reflects the lithology of the formation material.

[0003] To this end, a new type of lithology density logging instrument with announcement number CN217233483U is provided, which can effectively improve the stability of the logging instrument and reduce the detection error of the logging instrument. It includes a cable, a driving motor is arranged at the bottom end of the cable, a driving shaft is arranged at the rotating end of the driving motor, a movable plate is arranged at the bottom of the driving shaft, several first support rods are arranged at the bottom end of the driving motor, several second support rods are arranged at the top of the movable plate, a connecting shaft is arranged at the bottom end of the driving shaft, a mounting plate is arranged at the bottom end of the connecting shaft, a logging instrument is arranged at the bottom end of the mounting plate, several connecting rods are arranged between the side wall of the driving motor and the side wall of the mounting plate, an external thread is arranged on the outside of the driving shaft, an internal thread is arranged on the middle part of the movable plate, the driving shaft and the movable plate are connected by threads, the top of the first support rod and the bottom end of the driving motor are rotationally connected, and the bottom of the second support rod and the top of the movable plate are rotationally connected.

[0004] The problem with the prior art is that although the above patent solves the problem of the logging instrument shaking during operation, since the logging instrument designed in the patent can only detect in one direction, the detection effect of the well is poor and the obtained detection data is inaccurate. Therefore, we propose a new type of lithology density logging instrument. Utility Model Content

[0005] The purpose of the utility model is to provide a novel lithology density logging instrument to solve the problems raised in the above background technology.

[0006] The utility model is implemented as follows: a new type of lithology density logging instrument comprises two groups of fixed plates, four groups of fixed rods are commonly fixedly connected between the two groups of fixed plates, adjustment components are commonly arranged on the surfaces of the two groups of fixed plates, and the adjustment components are used to adjust the detection angle of the device, wherein cables are fixedly connected to the four sides of the upper surface of one group of fixed plates.

[0007] As a preferred embodiment of the present invention, the adjustment component includes a movable shell, the movable shell is fixedly connected to the middle part of the upper surface of one group of fixed plates, and a sliding groove is opened on the upper surface of the movable shell.

[0008] As a preferred embodiment of the utility model, a plurality of groups of movable balls are movably connected in the slide groove, and surfaces of the plurality of groups of movable balls are fixedly connected to support rods.

[0009] As a preferred embodiment of the utility model, the upper ends of several groups of the support rods are commonly fixedly connected to a rotating shell, the inner bottom of the rotating shell is fixedly connected to a placement shell, and the upper surface of the placement shell is fixedly connected to three groups of spring pull rods.

[0010] As a preferred embodiment of the utility model, the three groups of spring pull rod piston ends are commonly and fixedly connected to a clamping shell, and a logging instrument is commonly and detachably connected between the clamping shell and the placement shell.

[0011] As a preferred embodiment of the present invention, a fixing column is fixedly connected to the middle of the upper surface of the rotating shell, the fixing column penetrates to the outside of one group of fixing plates, and a worm gear is fixedly connected to the upper end of the fixing column.

[0012] As a preferred embodiment of the utility model, a mounting seat is fixedly connected to the upper surface of one group of the fixed plates, a motor is fixedly connected inside the mounting seat, a worm corresponding to the worm wheel is fixedly connected to the output end of the motor, a support sleeve is movably connected to one end of the worm surface, and the support sleeve is fixedly connected to the upper surface of one group of the fixed plates.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model adopts the design of fixing rods, adjustment components, cables and fixing plates. When in use, the device can be placed in the well by using cables. During the placement process, the four groups of fixing rods are very close to the inner wall of the well, and the design of the four groups of cables can prevent the device from swinging significantly. During use, the adjustment components can be used to adjust the detection angle, thereby achieving a more comprehensive detection effect.

[0015] 2. The utility model adopts the design of a rotating shell, a spring pull rod, a placement shell, a well logging instrument, a clamping shell, a movable shell, a slide groove, a movable ball and a support rod. When the well logging instrument is placed inside the placement shell, the spring pull rod will pull the clamping shell to clamp and fix the well logging instrument to prevent it from moving during operation, and the rotating shell can rotate by utilizing the characteristics of the support rod and the movable ball moving in the slide groove in the movable shell, thereby achieving the effect of facilitating the installation and fixation of the well logging instrument and adjusting the detection angle of the well logging instrument.

[0016] 3. The utility model adopts the design of a fixed column, a worm wheel, a support sleeve, a worm, a motor and a mounting seat. The mounting seat is used to fix the motor, and the support sleeve is used to support the worm. When working, the motor is started, the motor drives the worm to rotate, and the worm drives the worm wheel to rotate. Finally, the worm wheel drives the rotating shell to rotate by the fixed column, thereby achieving the effect of providing power for the angle adjustment of the well logging instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the adjustment component provided by the embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the local structure of the adjustment component provided in the embodiment of the utility model.

[0020] In the figure: 1. fixing rod; 2. adjusting assembly; 201. rotating shell; 202. spring pull rod; 203. placing shell; 204. logging instrument; 205. clamping shell; 206. fixing column; 207. worm gear; 208. supporting sleeve; 209. worm; 210. motor; 211. mounting seat; 212. movable shell; 213. slide groove; 214. movable ball; 215. supporting rod; 3. cable; 4. fixing plate. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 3 As shown, a new type of lithologic density logging instrument provided by an embodiment of the utility model includes two groups of fixed plates 4, four groups of fixed rods 1 are commonly fixedly connected between the two groups of fixed plates 4, and adjustment components 2 are commonly arranged on the surfaces of the two groups of fixed plates 4. The adjustment components 2 are used to adjust the detection angle of the device, and cables 3 are fixedly connected to the four sides of the upper surface of one group of fixed plates 4.

[0024] The above scheme is adopted: through the design of the fixed rod 1, the adjustment component 2, the cable 3 and the fixed plate 4, when in use, the device can be placed in the well using the cable 3. During the placement process, the four groups of fixed rods 1 are very close to the inner wall of the well, and the design of the four groups of cables 3 can prevent the device from swinging significantly. During use, the adjustment component 2 can be used to adjust the detection angle, thereby achieving a more comprehensive detection effect.

[0025] refer to Figure 3 The adjusting assembly 2 includes a movable shell 212, which is fixedly connected to the middle part of the upper surface of one group of fixed plates 4, and a slide groove 213 is provided on the upper surface of the movable shell 212; a plurality of groups of movable balls 214 are movably connected in the slide groove 213, and a plurality of groups of movable balls 214 are fixedly connected to the surfaces of the plurality of groups of movable balls 214; the upper ends of the plurality of groups of support rods 215 are commonly fixedly connected to the rotating shell 201, a placement shell 203 is fixedly connected to the bottom of the rotating shell 201, and three groups of spring pull rods 202 are fixedly connected to the upper surface of the placement shell 203; the piston ends of the three groups of spring pull rods 202 are commonly fixedly connected to the clamping shell 205, and a logging instrument 204 is detachably connected between the clamping shell 205 and the placement shell 203.

[0026] The above scheme is adopted: through the design of the rotating shell 201, the spring pull rod 202, the placement shell 203, the logging instrument 204, the clamping shell 205, the movable shell 212, the slide groove 213, the movable ball 214 and the support rod 215, when the logging instrument 204 is placed inside the placement shell 203, the spring pull rod 202 will pull the clamping shell 205 to clamp and fix the logging instrument 204 to prevent it from moving during work, and the rotating shell 201 can rotate by utilizing the characteristics of the support rod 215 and the movable ball 214 moving in the slide groove 213 in the movable shell 212, thereby achieving the effect of facilitating the installation and fixation of the logging instrument 204 and adjusting the detection angle of the logging instrument 204.

[0027] refer to Figure 2 A fixing column 206 is fixedly connected to the middle part of the upper surface of the rotating shell 201, and the fixing column 206 penetrates to the outside of one group of fixed plates 4, and a worm gear 207 is fixedly connected to the upper end of the fixing column 206; a mounting seat 211 is fixedly connected to the upper surface of one group of fixed plates 4, and a motor 210 is fixedly connected inside the mounting seat 211, and a worm 209 corresponding to the worm gear 207 is fixedly connected to the output end of the motor 210, and a support sleeve 208 is movably connected to one end of the surface of the worm 209, and the support sleeve 208 is fixedly connected to the upper surface of one group of fixed plates 4.

[0028] The above scheme is adopted: through the design of the fixed column 206, the worm wheel 207, the support sleeve 208, the worm 209, the motor 210 and the mounting seat 211, the mounting seat 211 is used to install and fix the motor 210, and the support sleeve 208 is used to support the worm 209. When working, the motor 210 is started, and the motor 210 will drive the worm 209 to rotate, so that the worm 209 drives the worm wheel 207 to rotate, and finally the worm wheel 207 drives the rotating shell 201 to rotate by the fixed column 206, thereby achieving the effect of providing power for the angle adjustment of the logging instrument 204.

[0029] The working principle of this utility model:

[0030] During use, after the logging instrument 204 is placed inside the placement shell 203, the spring pull rod 202 will pull the clamping shell 205 to clamp and fix the logging instrument 204 to prevent it from moving during operation, and the rotating shell 201 can rotate by utilizing the support rod 215 and the movable ball 214 to move in the slide groove 213 in the movable shell 212, which is convenient for the installation and fixation of the logging instrument 204 and the adjustment of the detection angle of the logging instrument 204. The mounting seat 211 is used for the installation and fixation of the motor 210, and the support sleeve 208 is used to support the worm 209. During operation, the motor 210 is started, and the motor 210 will drive the worm 209 to rotate, thereby causing the worm 209 to drive the worm wheel 207 to rotate, and finally the worm wheel 207 uses the fixed column 206 to drive the rotating shell 201 to rotate, which can provide power for the angle adjustment of the logging instrument 204.

[0031] In summary: this new type of lithologic density logging instrument, through the structure of the adjustment component 2, the rotating shell 201, the spring pull rod 202, the placement shell 203, the logging instrument 204, the clamping shell 205, the fixed column 206, the worm gear 207, the support sleeve 208, the worm 209, the motor 210, the mounting seat 211, the movable shell 212, the slide groove 213, the movable ball 214 and the support rod 215, solves the problem that the above patent solves the problem of the logging instrument shaking during operation, but because the logging instrument designed in the patent can only detect in one direction, the detection effect of the well is poor and the obtained detection data is inaccurate.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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 other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel lithology density logging tool, comprising two sets of fixed plates (4), characterized in that: Four groups of fixing rods (1) are commonly fixedly connected between the two groups of fixing plates (4), and adjustment components (2) are commonly arranged on the surfaces of the two groups of fixing plates (4). The adjustment components (2) are used to adjust the detection angle of the device, and cables (3) are fixedly connected to the four sides of the upper surface of one group of fixing plates (4).

2. A new type of lithology density logging tool as claimed in claim 1, characterized in that: The adjustment component (2) comprises a movable shell (212), the movable shell (212) being fixedly connected to the middle part of the upper surface of one set of fixed plates (4), and a sliding groove (213) being provided on the upper surface of the movable shell (212).

3. A new type of lithology density logging tool as claimed in claim 2, characterized in that: A plurality of groups of movable balls (214) are movably connected in the slide groove (213), and surfaces of the plurality of groups of movable balls (214) are fixedly connected with support rods (215).

4. A new type of lithology density logging tool as claimed in claim 3, characterized in that: The upper ends of the plurality of groups of support rods (215) are commonly fixedly connected to a rotating shell (201), the inner bottom of the rotating shell (201) is fixedly connected to a placement shell (203), and the upper surface of the placement shell (203) is fixedly connected to three groups of spring pull rods (202).

5. A new type of lithology density logging tool as claimed in claim 4, characterized in that: The piston ends of the three groups of spring pull rods (202) are all fixedly connected to a clamping shell (205), and a logging instrument (204) is detachably connected between the clamping shell (205) and the placement shell (203).

6. A new type of lithology density logging tool as claimed in claim 4, characterized in that: A fixing column (206) is fixedly connected to the middle of the upper surface of the rotating shell (201), and the fixing column (206) passes through the outside of one set of fixing plates (4). A worm gear (207) is fixedly connected to the upper end of the fixing column (206).

7. A new type of lithology density logging tool as claimed in claim 6, characterized in that: A mounting seat (211) is fixedly connected to the upper surface of one group of the fixing plates (4), a motor (210) is fixedly connected inside the mounting seat (211), a worm (209) corresponding to the worm wheel (207) is fixedly connected to the output end of the motor (210), a support sleeve (208) is movably connected to one end of the surface of the worm (209), and the support sleeve (208) is fixedly connected to the upper surface of one group of the fixing plates (4).

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