Measuring device and drilling tool thereof

Abstract

The invention discloses a measuring device and a drilling tool thereof. The measuring device comprises a drill rod and a measuring rod arranged in the drill rod; the drill rod is provided with a measuring channel in the radial direction, and a first transparent blocking piece is arranged in the measuring channel. The measuring rod is arranged in the measuring channel, and the measuring rod is provided with a second transparent blocking piece and a photoelectric measuring assembly; the second transparent blocking piece abuts against the first transparent blocking piece in the radial direction, and a continuous photoelectric link is formed after the first transparent blocking piece abuts against the second transparent blocking piece; and the photoelectric measurement assembly sends the photoelectric signal to the outside of the drill rod through the photoelectric link. The first transparent blocking piece and the second transparent blocking piece form a photoelectric link, the measuring rod is provided with the photoelectric measuring assembly, and the photoelectric measuring assembly measures the underground side wall through the photoelectric link.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and more particularly to a measuring device and its drilling tool. Background Technology

[0002] In existing drilling measurement technologies, sensors are placed outside the drill pipe, following the drill string to acquire data. However, these sensors, being sensitive devices, are easily damaged during drilling. Current solutions involve applying a rigid, transparent protective cover to the sensor. This cover prevents the sensor from contacting the wellbore during drilling, but it also limits the use of certain sensors, such as temperature and pressure sensors.

[0003] Therefore, in different geological exploration scenarios, how to protect sensitive devices such as sensors while being able to use sensors to measure environmental data between the drill pipe and the well wall at the measurement location will be a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a measuring device to overcome the aforementioned shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention discloses a first aspect of a measuring device, comprising a drill rod and a measuring rod disposed within the drill rod; the drill rod has a measuring channel constructed radially, and a first transparent blocking member is disposed within the measuring channel; the measuring rod is disposed within the measuring channel, and the measuring rod is provided with a second transparent blocking member and a photoelectric measuring component; the first transparent blocking member is configured to allow at least one photoelectric signal to pass between the measuring channel and the outside of the drill rod; the second transparent blocking member abuts against the first transparent blocking member radially, and the abutment of the first transparent blocking member and the second transparent blocking member forms a continuous photoelectric link; the photoelectric measuring component transmits the photoelectric signal to the outside of the drill rod through the photoelectric link.

[0006] In this invention, the internal structure of the second transparent barrier has an installation space; the photoelectric measurement component is installed in the installation space.

[0007] In this invention, the first transparent blocking member includes at least two circumferentially surrounding and spaced apart transparent wedge-shaped members, at least a portion of the transparent wedge-shaped members penetrating through the drill rod, and at least a portion forming a lower wedge-shaped surface within the drill rod;

[0008] In this invention, the second transparent blocking member is constructed as a transparent frustum; the transparent frustum is installed at the bottom of the measuring rod, and the outer side of the transparent frustum abuts against all of the transparent wedge-shaped members.

[0009] The first transparent barrier comprises a transparent ring, and an inner wall of the transparent ring is in abutment with an outer wall of the second transparent barrier.

[0010] The measuring channel is provided with an annular grappling slot above the first transparent barrier, and a grappling mechanism is connected to the top of the measuring rod and cooperates with the annular grappling slot.

[0011] The bottom of the measuring rod is connected with a coring rod.

[0012] The photoelectric measuring assembly comprises a rotating platform, and a laser measuring device, a visual measuring device and a processing circuit are installed on the rotating platform.

[0013] The photoelectric measuring assembly is configured as a photoelectric pod.

[0014] In addition, the second aspect of the present application discloses a drilling tool for rope coring measurement, and part of the drill pipe and the measuring rod of the measuring device are applied.

[0015] Compared with the prior art, the measuring device of the present application comprises a photoelectric link through the first transparent barrier and the second transparent barrier between the drill pipe and the measuring rod, and the measuring rod is provided with a photoelectric measuring assembly, so that the photoelectric measuring assembly can measure the sidewall of the well through the photoelectric link. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 It is a first structural schematic view of the measuring device;

[0018] Figure 2 It is a partial enlarged schematic view of Figure 1

[0019] Figure 3 It is a partial enlarged schematic view of the second structure of the measuring device;

[0020] Figure 4 It is a partial enlarged schematic view of Figure 1

[0021] Figure 5 It is a third structural schematic view of the measuring device

[0022] Explanation of reference signs:

[0023] ​​100, drill pipe; 101, measurement channel; 102, communication groove; 103, annular mounting groove; 104, annular spear groove; 110, first transparent barrier;

[0024] 200, measurement rod; 210, second transparent barrier; 211, hollow cavity;

[0025] 300, optoelectronic measurement assembly;

[0026] 410, spear head;

[0027] 420, recovery pipe; 421, claw groove;

[0028] 431, elastic clamping column; 432, elastic clamping claw; 433, V-shaped spring;

[0029] 500, coring rod. DETAILED DESCRIPTION

[0030] For the purpose of facilitating the understanding of the present application, the present application will be described in more detail below with reference to the relevant drawings. The drawings show embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of disclosing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application.

[0032] As used herein, the singular forms "a", "an" and "the" can also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "comprising" or "including" or "having" and the like specifies the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0033] The present application discloses a measurement device. The measurement device is applied to a measurement-while-drilling scene, allowing an optoelectronic measurement assembly 300 inside a drill pipe 100 to realize measurement of a downhole sidewall outside the drill pipe 100 through an optoelectronic link arranged between the drill pipe 100 and a measurement rod 200, while realizing protection of the optoelectronic measurement assembly 300 and measurement of the downhole sidewall.

[0034] For this purpose, Figure 1The measuring device comprises a drill pipe 100 and a measuring pipe 200. The drill pipe 100 is radially configured with a measuring channel 101 passing through, and a first transparent barrier 110 is arranged in the measuring channel 101. The first transparent barrier 110 is partially exposed to the outside of the drill pipe 100 to allow at least one photoelectric signal to pass between the measuring channel 101 and the sidewall of the well through the first transparent barrier 110 itself. The measuring pipe 200 is inserted into the measuring channel 101 from above the drill pipe 100 and is provided with a second transparent barrier 210. The second transparent barrier 210 can radially abut the first transparent barrier 110 to limit the downward movement of the measuring pipe 200 in the measuring channel 101. At the same time, the first transparent barrier 110 and the second transparent barrier 210 can form a stable and continuous photoelectric link after abutting to enable the photoelectric signal to pass between the first transparent barrier 110, the abutting surface of the first transparent barrier 110 and the second transparent barrier 210, and the second transparent barrier 210. The first transparent barrier 110 and the second transparent barrier 210 do not block the flow of drilling fluid through the measuring channel 101 when they abut. Therefore, the measuring device of the present application utilizes the abutment of the first transparent barrier 110 and the second transparent barrier 210. On the one hand, the measuring pipe 200 can be suspended in the drill pipe 100 to realize synchronous drilling with the drill pipe 100. On the other hand, the abutment of the first transparent barrier 110 and the second transparent barrier 210 forms a photoelectric link that is not affected by the drilling fluid, thereby realizing the measurement of the sidewall of the well outside the drill pipe 100 by the photoelectric measuring assembly 300 and avoiding the influence of the drilling fluid on the photoelectric measuring assembly 300.

[0035] Further, Figure 2 The first transparent barrier 110 comprises a plurality of transparent wedge-shaped members that are circumferentially arranged and embedded in the sidewall of the drill pipe 100. The side of the transparent wedge-shaped member away from the center of the drill pipe 100 is embedded in the communication groove 102 formed in the drill pipe 100, and the side close to the center of the drill pipe 100 is formed with a downwardly inclined lower wedge surface in the radial direction. The second transparent barrier 210 is configured as a transparent circular truncated cone body with a hollow cavity 211. The transparent circular truncated cone body is installed at the bottom of the measuring pipe 200 in a threaded connection manner, and the outer side of the transparent circular truncated cone body is formed with an upper wedge surface that radially abuts the lower wedge surface of each transparent wedge-shaped member. A liquid channel allowing the drilling fluid to pass through is formed between the adjacent two transparent wedge-shaped members, the transparent circular truncated cone body, and the drill pipe 100. The photoelectric measuring assembly 300 is installed between the hollow cavity 211 of the transparent circular truncated cone body and the bottom of the measuring pipe 200. Therefore, the measuring pipe 200 moves downwardly in the radial direction in the measuring channel 101 until the transparent circular truncated cone body abuts each transparent wedge-shaped member. The photoelectric measuring assembly 300 sends and receives the returned photoelectric signal to the outside of the drill pipe 100 through the first transparent barrier 110, the second transparent barrier 210, and the abutting surface therebetween. The photoelectric measuring assembly 300 measures the sidewall of the well according to the photoelectric signal.

[0036] Preferably, the transparent material of each transparent piece can be polycarbonate or Pasmo material, and the Pasmo material is a high-molecular amorphous polymer, which has mechanical properties close to metal, high pressure resistance and impact resistance.

[0037] Based on this, the first aspect of the measuring device uses the cooperation of each transparent wedge-shaped piece and the transparent circular truncated cone to limit the radial direction of the measuring rod 200, so that the measuring rod 200 can be suspended in the drill rod 100, and the synchronous drilling of the measuring rod 200 with the drill rod 100 is realized; the second aspect is that the liquid channel formed between the adjacent two transparent wedge-shaped pieces, the transparent circular truncated cone and the drill rod 100 ensures the normal passage of the drilling fluid along the measuring channel 101, so that the measuring device can be used in the scene that needs the assistance of the drilling fluid; the third aspect uses the abutment of each transparent wedge-shaped piece and the transparent circular truncated cone to form a stable optical-electric link, which avoids the occlusion of the transmission and / or reception of the optical-electric signal of the optical-electric measuring assembly 300 when the drilling fluid passes through the gap between the drill rod 100 and the measuring rod 200, and ensures the reliability of the measurement of the downhole sidewall outside the drill rod 100.

[0038] In addition, Figure 3 The first transparent blocking piece 110 includes a transparent ring. The drill rod 100 is formed with an annular mounting groove 103 in the measuring channel 101, in which the transparent ring is embedded and mounted. One or more communication grooves 102 are opened on the sidewall of the drill rod 100 and are respectively communicated to the annular mounting groove 103, and when the transparent ring is partially embedded and mounted in the annular mounting groove 103, it will completely cover all the communication grooves 102.

[0039] The second transparent blocking piece 210 is a transparent circular truncated cone with a hollow cavity 211. The inner side section of the transparent ring is a conical surface and can abut the upper wedge surface of the transparent circular truncated cone in the radial direction. The abutting surfaces of the transparent ring and the transparent circular truncated cone are formed with a plurality of liquid channels that allow the flow of drilling fluid. Then, the transparent ring in this structure is directly mounted in the measuring channel 101 and covers the communication grooves 102, serving as a passage between the measuring channel 101 and the downhole sidewall, and the structure is simple and easy to install.

[0040] Further, Figure 1 and Figure 4The measuring channel 101 is provided with an annular fish groove 104 above the first transparent barrier 110, and the top of the measuring rod 200 is connected with a fish mechanism matched with the annular fish groove 104. The fish mechanism comprises a fish head 410, a recovery tube 420 and a spring catch. The recovery tube 420 is integrally arranged at the top of the measuring rod 200, and the fish head 410 is fixedly installed at the top of the recovery tube 420. The recovery tube 420 is hollow and is provided with symmetrical catch groove 421. The spring catch is composed of a spring catch column 431, a spring catch paw 432 and a V-shaped spring 433. The spring catch paw 432 is fixedly connected to the spring catch column 431. The spring catch column 431 is installed in the recovery tube 420 and can move radially in the recovery tube 420. The V-shaped spring 433 is fixedly connected between the two wings of the spring catch paw 432. The V-shaped spring 433 makes the two wings of the spring catch paw 432 relatively far away. The two wings of the spring catch paw 432 can respectively extend into the corresponding catch groove 421, and after extending into the catch groove 421, abut against the side wall of the annular fish groove 104 in the radial direction upward. Then, after the measuring rod 200 penetrates into the measuring channel 101, the two wings of the spring catch paw 432 extend into the catch groove 421 and are constrained by the inner wall of the measuring channel 101. When the measuring rod 200 reaches the preset position, on the one hand, the two wings of the spring catch paw 432 extend into the annular fish groove 104 and are limited by the side wall of the annular fish groove 104 and cannot move upward, and on the other hand, the first transparent barrier 110 and the second transparent barrier 210 abut against each other, and the measuring rod 200 is limited and cannot move downward, so that the measuring rod 200 is completely fixed in the measuring channel 101.

[0041] Therefore, in the process of penetrating the measuring rod 200 into the measuring channel 101 from top to bottom, the fish mechanism, the first transparent barrier 110 and the second transparent barrier 210 are used to automatically fix the measuring rod 200 in the drill rod 100 when the measuring rod 200 reaches the preset position. In the process of taking out the measuring rod 200 from the measuring channel 101 (i.e. recovering the measuring rod 200), the recovery tube 420 moves upward relative to the spring catch, the edges of the catch groove 421 of the recovery tube 420 compress the two wings of the spring catch paw 432 inward to release the abutment of the two wings of the spring catch paw 432 and the annular fish groove 104, so that the measuring rod 200 can be moved upward and taken out from the measuring channel 101.

[0042] In addition, Figure 5 The measuring device comprises a coring rod 500. The coring rod 500 is spirally connected to the bottom of the transparent circular table body. The bottom of the coring rod 500 is provided with a coring cavity. Then when the drill rod 100 drills, part of the rock sample is pressed into the coring cavity by the drill bit, realizing the synchronous operation of measurement while drilling and coring.

[0043] Further, the photoelectric measuring assembly 300 in the present application comprises a rotating platform, a laser measuring device, a visual measuring device, a processing circuit and a power supply installed on the rotating platform. The rotating platform enables the laser measuring device and the visual measuring device to rotate horizontally in the measuring channel 101 to measure the sidewall in different directions, the processing circuit is used for processing and storing the measurement data and can send the stored data to an external device in a wired interface or wireless communication manner, and the power supply can supply power to the above devices within a certain time range.

[0044] Preferably, Figure 1 It is shown that the photoelectric measuring assembly 300 can comprise a photoelectric pod. The photoelectric pod is a task load device integrating photoelectric sensors (such as visible light cameras, infrared thermal imagers, laser range finders, etc.) on a gyro-stabilized platform, which can be used in the dark and high-turbidity environment downhole to effectively measure the sidewall. At the same time, the gyro-stabilized system of the photoelectric pod can isolate the vibration of the drill pipe 100 to a certain extent during drilling to ensure the synchronous work of various photoelectric sensors during the drilling process.

[0045] Based on this, the measuring device in the present application can adapt to different geological exploration scenes, and the photoelectric measuring assembly 300 does not need to be arranged outside the drill pipe 100, avoiding the damage of the sensing device when following the drill pipe 100 to drill, and also avoiding the influence of the drilling fluid on the sidewall measurement of the photoelectric measuring assembly 300.

[0046] Further, the measuring device in the present application can be applied to a wireline coring measuring drilling tool. The measuring rod 200 is used as an inner rod part of the wireline coring measuring drilling tool, and the drill pipe 100 is used as an outer rod part of the wireline coring measuring drilling tool. The outer rod of the wireline coring measuring drilling tool is used for drilling, and the inner rod is installed in the outer rod and is synchronized with the drilling, coring and measuring according to the outer rod.

[0047] It can be inferred that the measuring device in the present application can also be applied to a through-the-bit MWD device, which is not described here.

[0048] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is not doubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

[0049] The above is only a preferred embodiment of the present application and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A measuring device, characterized in that, The measuring device includes a drill pipe and a measuring rod deployed inside the drill pipe; The drill pipe is radially constructed with a measuring channel, and a first transparent blocking element is provided in the measuring channel; The measuring rod is deployed within the measuring channel, and the measuring rod is equipped with a second transparent blocking element and a photoelectric measuring component; The first transparent barrier is configured to allow at least one photoelectric signal to pass between the measurement channel and the outside of the drill pipe; The second transparent barrier abuts against the first transparent barrier in the radial direction, and the first transparent barrier and the second transparent barrier form a continuous photoelectric link after they abut against each other. The photoelectric measurement component transmits the photoelectric signal to the outside of the drill pipe via the photoelectric link.

2. The measuring device according to claim 1, characterized in that, The second transparent barrier has an internal structure with installation space; The photoelectric measurement component is installed in the mounting space.

3. The measuring device according to claim 2, characterized in that, The first transparent blocking member includes at least two circumferentially surrounding and spaced apart transparent wedges, at least a portion of the transparent wedges penetrating through the drill rod, and at least a portion forming a lower wedge-shaped surface within the drill rod; The second transparent barrier is provided with an upper wedge-shaped surface that mates with the lower wedge-shaped surface.

4. The measuring device according to claim 3, characterized in that, The second transparent barrier is constructed as a transparent frustum. The transparent frustum is mounted on the bottom of the measuring rod, and the outer side of the transparent frustum abuts against all of the transparent wedge-shaped parts.

5. The measuring device according to claim 2, characterized in that, The first transparent barrier includes a transparent ring; The inner wall of the transparent ring abuts against the outer wall of the second transparent barrier.

6. The measuring device according to claim 1, characterized in that, The measuring channel has an annular spear-catching groove above the first transparent barrier. The top of the measuring rod is connected to a spear-retrieving mechanism that mates with the annular spear-retrieving groove.

7. The measuring device according to claim 1, characterized in that, The bottom of the measuring rod is connected to a core-taking rod.

8. The measuring device according to claim 1, characterized in that, The photoelectric measurement component includes a rotating platform and a laser measurement device, a vision measurement device, and a processing circuit installed on the rotating platform.

9. The measuring device according to claim 1, characterized in that, The photoelectric measurement component is configured as a photoelectric pod.

10. A wireline coring measurement drilling tool, characterized in that, The measuring device described in any one of claims 1 to 9 is used.

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