Well logging device with guiding and positioning functions

Abstract

The invention provides a well logging device with guiding and positioning functions, which comprises an outer pipe, the side wall of the outer pipe is provided with a strip-shaped hole arranged along the axis direction of the outer pipe, and the inner side of the outer pipe is fixedly provided with mounting pipes corresponding to the two ends of the strip-shaped hole; one end of the collector sleeve is connected with one end of the outer pipe, the other end of the collector sleeve is provided with a guide head, and a signal collector is installed in the collector sleeve; the elastic sheet is mounted on the inner side of the strip-shaped hole, and mounting columns are arranged at the two ends of the elastic sheet; and the driving ring is used for driving the elastic sheet to be bent. The device has the beneficial effects that according to the diameter of a well, the position of the driving ring is adjusted, then the bending degree of the elastic piece is adjusted, the device is suitable for well logging work of well drilling with different diameters, the application range of the device is widened, when the device moves in the well drilling process and the well wall is uneven, the elastic piece can elastically deform, and the device is prevented from being knocked; and the device can be always coaxially arranged with a drilling well, so that the accuracy of a test result is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering well logging, and in particular relates to a well logging device with a guiding and positioning function. Background Art

[0002] Well logging, also known as geophysical logging, is a method of measuring geophysical parameters by utilizing the geophysical properties of rock formations, such as electrochemical properties, electrical conductivity, acoustic properties, and radioactivity. It is one of the applied geophysical methods. During oil drilling, well logging, also known as completion electrical logging, must be carried out after drilling to the designed well depth in order to obtain various petroleum geological and engineering technical data.

[0003] The existing logging devices have the following problems during use: first, there is a lack of guiding support structure, the device gets stuck during movement in the borehole, and the surface of the device is severely worn; second, there is a lack of positioning structure. Some logging projects require the sensor to be coaxially set with the drilling, and the lack of positioning structure leads to inaccurate test results. Summary of the invention

[0004] In view of this, the present invention aims to provide a logging device with a guiding and positioning function, in order to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A well logging device with a guiding and positioning function, comprising:

[0007] An outer tube, wherein a strip hole arranged along the axis direction of the outer tube is opened on the side wall of the outer tube, and a mounting tube corresponding to two ends of the strip hole is fixedly arranged on the inner side of the outer tube;

[0008] A collector sleeve, one end of which is connected to one end of the outer tube, and the other end is provided with a guide head, and a signal collector is installed in the collector sleeve;

[0009] An elastic sheet, the elastic sheet is installed on the inner side of the strip hole, and mounting posts are provided at both ends of the elastic sheet, and two mounting posts are respectively installed in two mounting tubes;

[0010] A driving ring is used to drive the elastic sheet to bend.

[0011] Furthermore, mounting seats are provided at both ends of the elastic sheet, and the mounting posts are fixedly connected to the mounting seats;

[0012] The outer diameter of the driving ring matches the inner diameter of the outer tube. The driving ring is installed on the inner side of the outer tube away from the collector sleeve. The driving ring is arranged corresponding to the mounting post at one end of the elastic sheet. The driving ring is provided with a guide tube matching the mounting post. The mounting post is installed on the inner side of the guide tube. The guide tube is installed on the inner side of the mounting tube.

[0013] A first connecting tube is provided at one end of the outer tube away from the collector sleeve, the outer diameter of the first connecting tube matches the outer diameter of the outer tube, a rotating tube is provided on the inner side of the first connecting tube, an internal thread is provided on the inner side of the first connecting tube, an external thread is provided on the outer side of the rotating tube, the rotating tube is threadedly connected to the first connecting tube, and the outer diameter of the rotating tube is larger than the inner diameter of the driving ring.

[0014] Furthermore, the inner sides of both ends of the outer tube are provided with internal threads, the first connecting tube is fixed with a first threaded tube, and the first threaded tube is threadedly connected to the inner side of the outer tube;

[0015] A hanging tube is provided at one end of the first connecting tube away from the outer tube, and a second threaded tube is provided at one end of the hanging tube adjacent to the first connecting tube. The second threaded tube is threadedly connected to the inner side of the first connecting tube. A hanging rod is fixed on the hanging tube, and the axis of the hanging rod is arranged perpendicular to the axis of the outer tube.

[0016] Furthermore, a compression spring is provided between the driving ring and the mounting column, and the compression spring is located on the inner side of the guide tube.

[0017] Furthermore, the inner sides of both ends of the collector sleeve are provided with internal threads, and a third threaded tube is fixedly provided at one end of the guide head adjacent to the collector sleeve, and the third threaded tube is threadedly connected to the inner side of the collector sleeve;

[0018] The end of the guide head away from the collector sleeve is a spherical surface;

[0019] The outer diameter of the collector sleeve matches the outer diameter of the outer tube.

[0020] Furthermore, an inner tube is provided on the inner side of the outer tube, and a limiting ring is provided on the outer side. There are two limiting rings, wherein the end face of one limiting ring limits the mounting seat of the elastic sheet near one end of the collector sleeve, and the outer side wall of the other limiting ring limits the middle end of the elastic sheet.

[0021] Furthermore, a flange is fixedly provided at one end of the inner tube adjacent to the collector sleeve, and a through hole corresponding to the mounting column is opened on the flange;

[0022] The mounting column is located inside the through hole;

[0023] A notch matching the mounting tube is formed on the side wall of the limiting ring, and the position of the notch does not correspond to the position of the through hole.

[0024] Furthermore, a second connecting tube is provided inside one end of the outer tube adjacent to the collector sleeve, one end of the second connecting tube is threadedly connected to the outer tube, and the other end is fixedly provided with a fourth threaded tube;

[0025] The fourth threaded tube is threadably connected to the collector casing.

[0026] Furthermore, the fourth threaded pipe matches the internal thread of the first connecting pipe.

[0027] Furthermore, there are multiple outer tubes, which are coaxially arranged, each outer tube is connected to a collector sleeve, and the outer tubes are connected to the collector sleeves of adjacent outer tubes.

[0028] Compared with the prior art, the well logging device with guiding and positioning function described in the present invention has the following beneficial effects:

[0029] (1) The logging device with guiding and positioning function described in the present invention can adjust the position of the driving ring and the bending degree of the elastic sheet according to the diameter of the well, and is suitable for logging work in wells of different diameters, thereby broadening the scope of application of the device. When the device moves during drilling, if the well wall is uneven, the elastic sheet can undergo elastic deformation to prevent the device from being damaged, and can always be set coaxially with the well, thereby ensuring the accuracy of the test results.

[0030] (2) In the well logging device with a guiding and positioning function described in the present invention, the fourth threaded pipe matches the internal thread of the first connecting pipe, and the second connecting pipe and the first connecting pipe are arranged to facilitate the combined use of multiple devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of the device in the first use state according to an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the three-dimensional structure of the device in the second use state according to an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the device in the third use state according to the embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the three-dimensional structure of the hoisting pipe according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the three-dimensional structure of the guide head according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the three-dimensional structure of the inner tube according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the three-dimensional structure of the driving tube according to an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the three-dimensional structure of the first connecting pipe according to an embodiment of the present invention;

[0040] Fig. 9 This is a schematic diagram of the three-dimensional structure of the outer tube according to an embodiment of the present invention;

[0041] Fig.10 This is a schematic diagram of the three-dimensional structure of the elastic sheet according to an embodiment of the present invention;

[0042] Fig.11 A schematic diagram of a cross-sectional structure of a device according to an embodiment of the present invention;

[0043] Fig.12 For the embodiment of the present invention Fig.11 Schematic diagram at A in the middle;

[0044] Fig.13 For the embodiment of the present invention Fig.11 Schematic diagram at point B in the middle;

[0045] Fig.14 For the embodiment of the present invention Fig.11 Schematic diagram at point C in the middle.

[0046] Description of reference numerals:

[0047] 1. Outer tube; 2. Collector sleeve; 3. Hoisting tube; 4. Elastic sheet; 5. First connecting tube; 6. Driving ring; 7. Inner tube; 8. Second connecting tube; 9. Rotating tube; 10. Compression spring; 11. Universal coupling; 101. Strip hole; 102. Mounting tube; 201. Guide head; 20101. Third threaded tube; 302. Second threaded tube; 301. Hanging rod; 401. Mounting column; 402. Mounting seat; 501. First threaded tube; 601. Guide tube; 701. Limiting ring; 70101. Notch; 702. Flange; 70201. Through hole; 801. Fourth threaded tube. DETAILED DESCRIPTION

[0048] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0051] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0052] like Figure 1-Figure 14 As shown, a logging device with a guiding and positioning function comprises: an outer tube 1, three strip holes 101 arranged along the axial direction of the outer tube 1 are opened on the side wall of the outer tube 1, and mounting tubes 102 corresponding to the two ends of the strip holes 101 are fixedly arranged on the inner side of the outer tube 1; a collector casing 2, one end of the collector casing 2 is connected to one end of the outer tube 1, and the other end is provided with a guide head 201, and a signal collector is installed in the collector casing 2; three elastic sheets 4, each strip hole 101 has an elastic sheet 4, the elastic sheet 4 is installed on the inner side of the strip hole 101, and mounting columns 401 are provided at both ends of the elastic sheet 4, and the two mounting columns 401 are respectively installed in the two mounting tubes 102; a driving ring 6, and the driving ring 6 is used to drive the elastic sheet 4 to bend.

[0053] Signal collectors are used to measure physical properties such as natural gamma rays, neutrons, and sound waves.

[0054] The signal collector measures parameters such as temperature, pressure, and resistivity.

[0055] The signal collector may also be an imaging device, such as a camera, for acquiring high-definition images of the well wall.

[0056] Mounting seats 402 are provided at both ends of the elastic sheet 4, and mounting posts 401 are fixedly connected to the mounting seats 402; the outer diameter of the driving ring 6 matches the inner diameter of the outer tube 1, and the driving ring 6 is installed on the inner side of the end of the outer tube 1 away from the collector sleeve 2. The driving ring 6 is arranged corresponding to the mounting posts 401 at one end of the elastic sheet 4, and a guide tube 601 matching the mounting posts 401 is provided on the driving ring 6, and the mounting posts 401 are installed on the inner side of the guide tube 601, and the guide tube 601 is installed on the inner side of the mounting tube 102; a first connecting tube 5 is provided at the end of the outer tube 1 away from the collector sleeve 2, and the outer diameter of the first connecting tube 5 matches the outer diameter of the outer tube 1, and a rotating tube 9 is provided on the inner side of the first connecting tube 5, and an inner thread is provided on the inner side of the first connecting tube 5, and an outer thread is provided on the outer side of the rotating tube 9, and the rotating tube 9 is threadedly connected to the first connecting tube 5, and the outer diameter of the rotating tube 9 is larger than the inner diameter of the driving ring 6. The position of the driving ring 6 is adjusted by rotating the rotating tube 9. The driving ring 6 drives the mounting column 401 at one end of the elastic sheet 4 to move. The middle end of the elastic sheet 4 bends outward. The rotating tube 9 is adjusted according to the diameter of the well, thereby increasing the use range of the device.

[0057] Internal threads are provided on the inner sides of both ends of the outer tube 1, and the first connecting tube 5 is fixedly provided with a first threaded tube 501, which is threadedly connected to the inner side of the outer tube 1; a hanging tube 3 is provided at one end of the first connecting tube 5 away from the outer tube 1, and a second threaded tube 302 is provided at one end of the hanging tube 3 adjacent to the first connecting tube 5, which is threadedly connected to the inner side of the first connecting tube 5, and a hanging rod 301 is fixedly provided on the hanging tube 3, and the axis of the hanging rod 301 is arranged perpendicular to the axis of the outer tube 1, so that the hanging rod 301 can be easily fixed to the cable.

[0058] In other embodiments, a compression spring 10 is provided between the drive ring 6 and the mounting column 401, and the compression spring 10 is located inside the guide tube 601. The compression spring 10 plays a buffering role. When the maximum deformation of the elastic sheet 4 cannot pass through the well, the compression spring 10 is further compressed to provide deformation, preventing the device from getting stuck in the well and preventing the elastic sheet 4 from being damaged. A damper can be selectively installed between the compression spring 10 and the drive ring 6.

[0059] Internal threads are provided on the inner sides of both ends of the collector sleeve 2, and a third threaded tube 20101 is fixedly provided on the end of the guide head 201 adjacent to the collector sleeve 2, and the third threaded tube 20101 is threadedly connected to the inner side of the collector sleeve 2; the end of the guide head 201 away from the collector sleeve 2 is a spherical surface; the outer diameter of the collector sleeve 2 matches the outer diameter of the outer tube 1.

[0060] An inner tube 7 is provided inside the outer tube 1, and a limiting ring 701 is provided outside. There are two limiting rings 701, and the end face of one limiting ring 701 limits the mounting seat 402 near one end of the collector sleeve 2 of the elastic sheet 4, and the outer wall of the other limiting ring 701 limits the middle end of the elastic sheet 4. A flange 702 is fixedly provided at one end of the inner tube 7 near the collector sleeve 2, and a through hole 70201 corresponding to the mounting column 401 is formed on the flange 702; the mounting column 401 is located inside the through hole 70201; a notch 70101 matching the mounting tube 102 is formed on the side wall of the limiting ring 701, and the position of the notch 70101 does not correspond to the position of the through hole 70201. When installing the inner tube 7, align the notch 70101 with the mounting tube 102, and insert the flange 702 when it contacts the mounting column 401. Rotate the inner tube 7 so that the through hole 70201 of the flange 702 is aligned with the mounting column 401, and insert the mounting column 401 into the through hole 70201. Tighten the second connecting tube 8 to fix the inner tube 7. The end of the inner tube 7 away from the flange 702 is located on the inner side of the drive ring 6. The setting of the inner tube 7 serves to protect the cable. The end of one of the limiting rings 701 limits the mounting seat 402 at one end of the elastic sheet 4 near the collector sleeve 2 to prevent the mounting column 401 from detaching from the mounting tube 102. The outer wall of the other limiting ring 701 limits the middle end of the elastic sheet 4 to prevent the elastic sheet 4 from bending toward the inner side of the outer tube 1.

[0061] A second connecting tube 8 is provided inside one end of the outer tube 1 near the collector sleeve 2. One end of the second connecting tube 8 is threadedly connected to the outer tube 1, and the other end is fixedly provided with a fourth threaded tube 801; the fourth threaded tube 801 is threadedly connected to the collector sleeve 2. The second connecting tube 8 serves to limit the flange 702. The fourth threaded tube 801 is convenient for connecting to the collector sleeve 2.

[0062] The fourth threaded tube 801 matches the internal thread of the first connecting tube 5. The arrangement of the second connecting tube 8 and the first connecting tube 5 facilitates the combined use of multiple devices.

[0063] like Figure 1 Shown is a single device in use.

[0064] like Figure 2 As shown, there are two outer tubes 1, which are coaxially arranged. Each outer tube 1 is connected to a collector sleeve 2, and the inner side of the first connecting tube 5 at one end of the outer tube 1 is threadedly connected to the fourth threaded tube 801 of the collector sleeve 2 of the adjacent outer tube 1.

[0065] like Figure 3 As shown, there are two outer tubes 1, which are coaxially arranged. Each outer tube 1 is connected to a collector sleeve 2. The first connecting tube 5 at one end of the outer tube 1 is connected to the fourth threaded tube 801 of the collector sleeve 2 of the adjacent outer tube 1 through a universal coupling 11.

[0066] Working process:

[0067] When this solution is implemented, the position of the drive ring 6 is adjusted according to the diameter of the well, thereby adjusting the bending degree of the elastic sheet 4. This is suitable for logging work in wells of different diameters, and the application range of the device is expanded. When the device moves during drilling, when the well wall is uneven, the elastic sheet 4 can undergo elastic deformation to prevent damage to the device, and can always be set coaxially with the drilling.

[0068] The elastic sheet 4 plays a dual role of guiding and supporting, and the two ends of the elastic sheet 4 are convenient for installation and disassembly through the mounting columns 401. The inner tube 7 is moved, and then the mounting columns 401 away from the driving ring 6 are moved toward the driving ring 6 to separate it from the tube to complete the disassembly, thereby improving maintenance efficiency.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A well logging device with a guiding and positioning function, characterized in that: include: An outer tube (1), wherein a strip hole (101) arranged along the axial direction of the outer tube (1) is opened on the side wall of the outer tube (1), and mounting tubes (102) corresponding to the two ends of the strip hole (101) are fixedly arranged on the inner side of the outer tube (1); A collector sleeve (2), one end of the collector sleeve (2) is connected to one end of the outer tube (1), and the other end is provided with a guide head (201), and a signal collector is installed in the collector sleeve (2); An elastic sheet (4), the elastic sheet (4) being installed on the inner side of the strip-shaped hole (101), and mounting columns (401) being provided at both ends of the elastic sheet (4), and the two mounting columns (401) being respectively installed in the two mounting tubes (102); A driving ring (6), wherein the driving ring (6) is used to drive the elastic sheet (4) to bend.

2. A well logging device with a guiding and positioning function according to claim 1, characterized in that: The elastic sheet (4) is provided with mounting seats (402) at both ends, and the mounting column (401) is fixedly connected to the mounting seats (402); The outer diameter of the driving ring (6) matches the inner diameter of the outer tube (1); the driving ring (6) is mounted on the inner side of the end of the outer tube (1) away from the collector sleeve (2); the driving ring (6) is arranged corresponding to the mounting column (401) at one end of the elastic sheet (4); a guide tube (601) matching the mounting column (401) is provided on the driving ring (6); the mounting column (401) is mounted on the inner side of the guide tube (601); and the guide tube (601) is mounted on the inner side of the mounting tube (102); A first connecting tube (5) is provided at one end of the outer tube (1) away from the collector sleeve (2); the outer diameter of the first connecting tube (5) matches the outer diameter of the outer tube (1); a rotating tube (9) is provided on the inner side of the first connecting tube (5); an internal thread is formed on the inner side of the first connecting tube (5); an external thread is formed on the outer side of the rotating tube (9); the rotating tube (9) is threadedly connected to the first connecting tube (5); and the outer diameter of the rotating tube (9) is larger than the inner diameter of the driving ring (6).

3. A well logging device with guiding and positioning function according to claim 2, characterized in that: The inner sides of both ends of the outer tube (1) are provided with internal threads, the first connecting tube (5) is fixed with a first threaded tube (501), and the first threaded tube (501) is threadedly connected to the inner side of the outer tube (1); A hanging tube (3) is provided at one end of the first connecting tube (5) away from the outer tube (1); a second threaded tube (302) is provided at one end of the hanging tube (3) adjacent to the first connecting tube (5); the second threaded tube (302) is threadedly connected to the inner side of the first connecting tube (5); a hanging rod (301) is fixedly provided on the hanging tube (3); the axis of the hanging rod (301) is arranged perpendicular to the axis of the outer tube (1).

4. A logging device with a guiding and positioning function according to claim 2, characterized in that: A compression spring (10) is provided between the driving ring (6) and the mounting column (401), and the compression spring (10) is located on the inner side of the guide tube (601).

5. The well logging device with guiding and positioning function according to claim 1, characterized in that: Internal threads are formed on the inner sides of both ends of the collector sleeve (2); a third threaded tube (20101) is fixedly provided on one end of the guide head (201) adjacent to the collector sleeve (2); and the third threaded tube (20101) is threadedly connected to the inner side of the collector sleeve (2); The end of the guide head (201) away from the collector sleeve (2) is a spherical surface; The outer diameter of the collector sleeve (2) matches the outer diameter of the outer tube (1).

6. A well logging device with a guiding and positioning function according to claim 1, characterized in that: An inner tube (7) is provided on the inner side of the outer tube (1), and a limiting ring (701) is provided on the outer side. The limiting rings (701) are two in number, wherein the end face of one limiting ring (701) limits the elastic sheet (4) against a mounting seat (402) adjacent to one end of the collector sleeve (2), and the outer side wall of the other limiting ring (701) limits the middle end of the elastic sheet (4).

7. A well logging device with guiding and positioning function according to claim 6, characterized in that: A flange (702) is fixedly provided at one end of the inner tube (7) adjacent to the collector sleeve (2), and a through hole (70201) corresponding to the mounting column (401) is opened on the flange (702); The mounting column (401) is located inside the through hole (70201); A notch (70101) matching the mounting tube (102) is formed on the side wall of the limiting ring (701), and the positions of the notch (70101) and the through hole (70201) do not correspond.

8. A well logging device with guiding and positioning function according to claim 7, characterized in that: A second connecting tube (8) is provided on the inner side of one end of the outer tube (1) close to the collector sleeve (2); one end of the second connecting tube (8) is threadedly connected to the outer tube (1), and the other end is fixedly provided with a fourth threaded tube (801); The fourth threaded tube (801) is threadedly connected to the collector sleeve (2).

9. A well logging device with a guiding and positioning function according to claim 8, characterized in that: The fourth threaded tube (801) matches the internal thread of the first connecting tube (5).

10. A well logging device with a guiding and positioning function according to claim 9, characterized in that: The outer tubes (1) are multiple in number, the multiple outer tubes (1) are coaxially arranged, each outer tube (1) is correspondingly connected to a collector sleeve (2), and the outer tube (1) is connected to the collector sleeve (2) of an adjacent outer tube (1).

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