Measuring device and wire-line coring measuring drilling tool applying same

Abstract

The invention discloses a measuring device and a wire-line coring measuring drilling tool applying the same. The measuring device comprises a drill rod and a measuring rod; the drill rod comprises a measuring channel, a measuring window and a blocking switch structure; the measuring rod is provided with a measuring section; the blocking switch structure is used for blocking the measuring section from passing through the measuring channel in the axial direction, and the measuring window is opened when the blocking switch structure blocks the measuring section; the measuring section is provided with at least one sensor, and the sensor collects well data between the drill rod and the well wall through the measuring window. According to the measuring device, a sensor does not need to be arranged outside the drill rod, damage to a sensing device and the like during drilling along with the drill rod is avoided, and automatic opening of the measuring window when the measuring rod reaches the measuring position is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, in particular to a measuring device and a rope coring measuring drill tool using the same. Background Art

[0002] In existing drilling measurement techniques, sensors are placed on the outside of the drill pipe. These sensors follow the drill pipe as it drills and collect data. However, as sensitive components, sensors are easily damaged during drilling. Existing solutions include rigid, transparent protective covers over the sensors. While these covers prevent contact between the sensors and the wellbore wall during drilling, they also restrict the use of some sensors, such as temperature and pressure sensors.

[0003] Therefore, in different geological exploration scenarios, how to protect sensitive devices such as sensors and how 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 technicians in this field urgently need to solve. Summary of the Invention

[0004] The purpose of the present invention is to provide a measuring device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above objectives, the present invention discloses a first aspect of a measuring device.

[0006] The measuring device includes a drill rod and a measuring rod;

[0007] The drill rod includes a measuring channel, a measuring window and a blocking switch structure;

[0008] The measuring rod is configured with a measuring section;

[0009] The blocking switch structure is used to block the measuring section from passing through the measuring channel in the axial direction, and the blocking switch structure opens the measuring window when blocking the measuring section;

[0010] The measuring section is provided with at least one sensor, and the sensor collects in-well data between the drill pipe and the well wall through the measuring window.

[0011] In the present invention, the drill rod is provided with a connecting outer rod, a measuring outer rod and a drill bit in sequence along the axial direction;

[0012] The connecting outer rod and the interior of the measuring outer rod form the measuring channel;

[0013] The measuring outer rod is configured with at least one measuring window along the circumference.

[0014] The blocking switch structure is constructed in the measuring outer rod.

[0015] In the present invention, the blocking switch structure includes a blocking portion and a switch portion;

[0016] The blocking portion is used to block the measuring section from passing through the drill rod in the axial direction;

[0017] The switch portion is used to open or close the measurement window according to the blocking of the measurement outer rod by the blocking portion.

[0018] In the present invention, the blocking portion includes an upper blocking ring, a lower fixing ring and an annular elastic member which are sequentially arranged in the measuring channel along the axial direction;

[0019] The upper blocking ring is movably connected in the measuring channel along the axial direction;

[0020] The lower fixing ring is fixedly connected in the measuring channel;

[0021] The annular elastic member is fixedly connected between the upper blocking ring and the lower fixing ring;

[0022] The switch portion is used to open or close the measurement window according to the up and down displacement of the blocking ring.

[0023] In the present invention, the switch portion includes a first drive assembly and a curved window plate;

[0024] The first driving assembly drives the arc-shaped window plate to move closer to or away from the measuring window according to the up and down displacement of the upper blocking ring.

[0025] In the present invention, the first driving assembly includes a track ring, at least one fixed block, at least one push block and a first driving switch;

[0026] The track ring is fixedly connected in the measuring channel, the track ring is constructed with a ring track, and the fixed block and the push block are arranged in the ring track at intervals;

[0027] A first V-shaped connecting rod mechanism is rotatably connected between the fixed block and the push block;

[0028] The fixed block is provided with a drive shaft, and the drive shaft is coaxially fixedly connected to the end of the first V-shaped connecting rod mechanism relative to the fixed block;

[0029] The push rod is fixedly connected to the curved window panel;

[0030] The first drive switch is used to convert the up and down displacement of the upper blocking ring into the rotation of the drive shaft.

[0031] In the present invention, the first drive switch includes a drive rack and a drive gear;

[0032] The driving rack is arranged in the axial direction and is fixedly connected to the upper blocking ring;

[0033] The driving gear is engaged with the driving rack and is coaxially fixedly connected to the driving shaft.

[0034] In the present invention, the first driving assembly includes a plurality of push blocks;

[0035] A second V-shaped connecting rod mechanism is provided between two adjacent push blocks.

[0036] In the present invention, a balance spring is provided between two adjacent push blocks in the annular track.

[0037] In the present invention, at least two adjacent curved window panels are configured to jointly enclose the same measurement window.

[0038] Two adjacent curved window panels are arranged to be telescopically connected to each other.

[0039] In addition, a second aspect of the present invention discloses a wireline coring and measuring drill tool, which uses the drill rod and part of the measuring rod of the measuring device.

[0040] Compared with the existing technology, the measuring device of the present invention can be loaded on drilling tools in different geological exploration scenarios. There is no need to set sensors and other sensing devices outside the drill rod, which avoids damage to the sensing devices and the like when drilling with the drill rod, and realizes the automatic opening of the measurement window when the measuring rod reaches the measurement position. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0042] Figure 1 Schematic diagram of the structure of the measuring device of the present invention;

[0043] Figure 2 It is a structural schematic diagram of the drill rod part of the present invention;

[0044] Figure 3 for Figure 2 A schematic cross-sectional view in one direction;

[0045] Figure 4 for Figure 2 A schematic cross-section on the other hand;

[0046] Figure 5 A partial structural diagram of a blocking switch structure.

[0047] Description of reference numerals:

[0048] 100. Drill rod; 111. Measuring window; 200. Measuring rod; 210. Rod blocking ring; 220. Measuring cabin; 300. Blocking switch structure; 310. Upper blocking ring; 311. Protective cover; 320. Lower fixing ring; 330. Annular elastic member; 341. Track ring; 342. Fixed block; 343. Push block; 344. First V-shaped connecting rod mechanism; 345. Second V-shaped connecting rod mechanism; 346. Drive rack; 347. Limiting bar; 348. Drive gear; 400. Arc-shaped window panel. DETAILED DESCRIPTION

[0049] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The drawings illustrate embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, the purpose of disclosing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0051] As used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include", "comprising", "having", etc. specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0052] The present invention discloses a measuring device. The measuring device includes a drill rod 100 and a measuring rod 200. The drill rod 100 consists of an outer rod and a drill bit. The measuring rod 200 serves as an inner rod, following the drill rod 100 during coring. In the present invention, the measuring rod 200 extends into the drill rod 100. When the measuring rod 200 is in a measuring section, one or more measuring windows 111 are opened. One or more sensors in the measuring rod 200 collect in-well data between the outer rod and the wellbore wall through the measuring windows 111.

[0053] In this regard, Figure 1The measurement device is shown in FIG. A measurement channel is formed axially within the drill pipe 100, through which the measuring rod 200 extends. A blocking switch structure 300 is provided within the measurement channel, which blocks the axial passage of a measuring section of the measuring rod 200. Furthermore, a measurement window 111 is provided on the sidewall of the drill pipe 100, connecting the exterior to the measurement channel. The blocking switch structure 300 can simultaneously open the measurement window 111 while blocking the measuring section. The measuring section of the measuring rod 200 is provided with a measurement chamber 220, which integrates at least one sensor. Therefore, the measurement device can measure in-well data between the exterior of the drill pipe 100 and the wellbore wall.

[0054] as well as, Figure 1 The measuring rod 200 is shown with a rod blocking ring 210 configured in the measuring section to cooperate with a blocking switch structure 300. Rod blocking ring 210 is positioned above a measuring chamber 220. When the measuring rod 200 is inserted into the drill pipe 100, the measuring chamber 220 can pass through the blocking switch structure 300, while the rod blocking ring 210 is blocked axially by the blocking switch structure 300. The blocking switch structure 300 simultaneously opens the measuring window 111 when the rod blocking ring 210 is blocked, and closes the measuring window 111 when the rod blocking ring 210 is unblocked.

[0055] as well as, Figure 2 The blocking switch structure 300 includes a blocking portion and a switch portion. The blocking portion is used to block the rod blocking ring 210. The switch portion opens or closes the measurement window 111 according to the blocking of the rod blocking ring 210 by the blocking portion.

[0056] In this regard, Figures 3 to 5 A preferred embodiment of the blocking switch structure 300 is shown.

[0057] in, Figure 3The blocking portion of the blocking switch structure 300 is shown to include an upper blocking ring 310, a lower fixing ring 320, and an annular elastic member 330, which are sequentially arranged axially within the measuring channel. The upper blocking ring 310 is axially sleeved within the measuring channel. The lower fixing ring 320 is fixedly connected to the inner wall of the measuring channel. The annular elastic member 330 is fixedly connected between the upper blocking ring 310 and the lower fixing ring 320. Simultaneously, the annular diameters of the upper blocking ring 310 and the lower fixing ring 320 are both larger than the maximum diameter of the measuring rod 200 body and its measuring chamber 220, and smaller than the outer diameter of the rod blocking ring 210. Therefore, the measuring rod 200 body and the measuring chamber 220 can pass smoothly through the upper blocking ring 310 and the lower fixing ring 320. The rod blocking ring 210 then axially contacts the upper blocking ring 310. At this time, gravity or an external force applied axially causes the upper blocking ring 310 to move downward, compressing the annular elastic member 330 and moving it closer to the lower fixing ring 320. The upper blocking ring 310 will trigger the switch portion when moving downward, and the switch portion will change from a closed state to an open state with respect to the measuring window 111. Optionally, the annular elastic member 330 is a spring coil arranged along the axial direction.

[0058] Further, Figure 3 and Figure 4 The blocking portion is shown to further include a protective sleeve 311 extending axially downward through the lower fixing ring 320. The bottom of the protective sleeve 311 is turned outward, forming an annular installation space between the protective sleeve 311 and the inner wall of the drill pipe 100. The switch portion is partially protected within the installation space.

[0059] as well as, Figure 4 The switch unit is shown to include a first drive assembly and a curved window plate 400. The first drive assembly is fixedly connected to the inner wall of the drill rod 100 and the lower retaining ring 320 and is disposed within the mounting space. The curved window plate 400 is connected to the first drive assembly and abuts against the inner wall of the drill rod 100. Therefore, the first drive assembly can drive the curved window plate 400 toward or away from the measurement window 111 based on the vertical displacement of the upper blocking ring 310.

[0060] Preferably, the curved window plate 400 is made of elastic material and has inclined edges on both sides. When the curved window plate 400 approaches the measuring window 111 in the circumferential direction, it is partially squeezed into the measuring window 111, thereby achieving a better sealing of the measuring window 111.

[0061] Specifically, Figure 5The first drive assembly is shown to include a track ring 341, a fixed block 342, a push block 343, and a first drive switch. The track ring 341 is connected to the bottom of the lower fixed ring 320 and forms a downward-facing circular track. The fixed block 342 and the push block 343 are installed within the circular track at intervals. The fixed block 342 is fixed in position within the circular track. The push block 343 can move in a circular motion along the track. A first V-shaped linkage 344 is rotatably connected between the fixed block 342 and the push block 343. The fixed block 342 is provided with a drive shaft, which is coaxially fixedly connected to the end of the first V-shaped linkage 344 opposite the fixed block 342. The push block 343 is fixedly connected to the curved window plate 400. The curved window plate 400 extends downward from the other end of the push block 343 and covers the measurement window 111. The area of the curved window plate 400 is at least larger than that of the measurement window 111, allowing the measurement window 111 to be opened or closed.

[0062] Preferably, the first drive switch includes a drive gear 348 and a drive rack 346. The drive gear 348 rotates coaxially with the drive shaft of the fixed block 342. The drive rack 346 is arranged axially, with its lower end meshing with the drive gear 348 and its upper end fixedly connected to the upper blocking ring 310. Therefore, when the upper blocking ring 310 moves up and down axially, the drive rack 346 rotates the drive gear 348. The drive gear 348, via the first V-shaped linkage 344, moves the push block 343 away from or toward the fixed block 342. The curved window panel 400 then moves circumferentially to cover or release the measurement window 111.

[0063] Preferably, the first drive switch further includes a limit bar 347. The limit bar 347 is parallel to the drive rack 346. The drive gear 348 will be maintained between the limit bar 347 and the drive rack 346 to ensure that the drive rack 346 and the drive gear 348 are always engaged.

[0064] In some embodiments, such as Figure 5 It is shown that the first drive assembly can be provided with multiple push blocks 343. A second V-shaped connecting rod mechanism 345 is provided between two adjacent push blocks 343. Each push block 343 is connected to its own arc-shaped window plate 400. Therefore, when the drill rod 100 is provided with multiple measurement windows 111 in some embodiments, the multiple push blocks 343 will synchronously move toward or away from the fixed block 342 along the circular track to simultaneously open or close the multiple measurement windows 111. Furthermore, a balance spring with the same elastic coefficient can be provided between all adjacent push blocks 343 and fixed blocks 342 in the circular track. The balance spring is used to compensate for the possible distance difference between adjacent push blocks 343 or between the fixed block 342 and the push block 343.

[0065] In some embodiments, at least two adjacent curved window panels 400 are configured to jointly open or close the same measurement window 111. The two adjacent curved window panels 400 are configured to slide, retract, and retract relative to each other. Thus, two small curved window panels 400 can accommodate a large measurement window 111.

[0066] Optionally, the drill rod 100 of the present invention employs a conventional drilling tool structure, namely, a connecting outer rod, a measuring outer rod, and a drill bit are sequentially arranged axially along the drill rod 100. The connecting outer rod and the measuring outer rod internally form a measuring channel; the measuring outer rod is circumferentially provided with at least one measuring window 111, and the blocking switch structure 300 is internally provided within the measuring outer rod.

[0067] Optionally, in the present invention, one or more pressure sensors and temperature sensors are integrated in the measuring cabin 220 , and the sensors can detect different wellbore environmental data inside and outside the drill pipe 100 through the measuring window 111 .

[0068] Based on this, the measuring device of the present invention can be installed in different geological exploration scenarios. There is no need to set sensors and other sensing devices outside the drill rod 100, which avoids damage to the sensing devices and the like when drilling with the drill rod 100, and realizes the automatic opening of the measuring window 111 when the measuring rod 200 reaches the measurement position.

[0069] Furthermore, the present invention discloses a rope coring measurement drill. The rope coring measurement drill includes an outer rod and an inner rod. The outer rod is constructed with an axial channel, and a suspension ring (replaced by a lower fixed ring 320) is provided in the axial channel. The inner rod is axially provided with a spear fishing mechanism, a suspension mechanism (with the same function as the rod blocking ring 210) and a coring mechanism. In the present invention, at least one measuring window 111 is provided on the outer rod, a blocking switch structure 300 is provided in the axial channel, and the suspension ring is replaced by a lower fixed ring 320. According to the present invention, the upper blocking ring 310, the annular elastic member 330, the switch part and other structures are provided near the original suspension ring. The inner rod is provided with a measuring cabin 220 near the measuring window 111. Therefore, the suspension mechanism of the inner rod plays the same technical function as the rod blocking ring 210 in the present invention, that is, it is blocked by the lower fixed ring 320 and triggers the blocking switch structure 300, so that the measuring window 111 opened on the outer rod is opened, thereby realizing synchronous measurement inside and outside the outer rod.

[0070] It can be inferred that the measuring device in the present invention can also be applied to a through-the-drill measurement device, which will not be described in detail here.

[0071] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A measuring device, characterized in that: The measuring device includes a drill rod and a measuring rod; The drill rod includes a measuring channel, a measuring window and a blocking switch structure; The measuring rod is configured with a measuring section; The blocking switch structure is used to block the measuring section from passing through the measuring channel in the axial direction, and the blocking switch structure opens the measuring window when blocking the measuring section; The measuring section is provided with at least one sensor, and the sensor collects in-well data between the drill pipe and the well wall through the measuring window.

2. The measuring device according to claim 1, characterized in that The drill rod is provided with a connecting outer rod, a measuring outer rod and a drill bit in sequence along the axial direction; The connecting outer rod and the interior of the measuring outer rod form the measuring channel; The measuring outer rod is configured with at least one measuring window along the circumference. The blocking switch structure is constructed in the measuring outer rod.

3. The measuring device according to claim 1, characterized in that The blocking switch structure includes a blocking portion and a switch portion; The blocking portion is used to block the measuring section from passing through the drill rod in the axial direction; The switch portion is used to open or close the measurement window according to the blocking of the measurement outer rod by the blocking portion.

4. The measuring device according to claim 3, characterized in that The blocking portion includes an upper blocking ring, a lower fixing ring and an annular elastic member which are sequentially arranged in the measuring channel along the axial direction; The upper blocking ring is movably connected in the measuring channel along the axial direction; The lower fixing ring is fixedly connected in the measuring channel; The annular elastic member is fixedly connected between the upper blocking ring and the lower fixing ring; The switch portion is used to open or close the measurement window according to the up and down displacement of the blocking ring.

5. The measuring device according to claim 4, characterized in that The switch portion includes a first drive assembly and a curved window plate; The first driving assembly drives the arc-shaped window plate to move closer to or away from the measuring window according to the up and down displacement of the upper blocking ring.

6. The measuring device according to claim 5, characterized in that The first driving assembly includes a track ring, at least one fixed block, at least one push block and a first driving switch; The track ring is fixedly connected in the measuring channel, the track ring is constructed with a ring track, and the fixed block and the push block are arranged in the ring track at intervals; A first V-shaped connecting rod mechanism is rotatably connected between the fixed block and the push block; The fixed block is provided with a drive shaft, and the drive shaft is coaxially fixedly connected to the end of the first V-shaped connecting rod mechanism relative to the fixed block; The push rod is fixedly connected to the curved window panel; The first drive switch is used to convert the up and down displacement of the upper blocking ring into the rotation of the drive shaft.

7. The measuring device according to claim 6, characterized in that The first drive switch includes a drive rack and a drive gear; The driving rack is arranged in the axial direction and is fixedly connected to the upper blocking ring; The driving gear is engaged with the driving rack and is coaxially fixedly connected to the driving shaft.

8. The measuring device according to claim 6, characterized in that The first drive assembly includes a plurality of push blocks; A second V-shaped connecting rod mechanism is provided between two adjacent push blocks.

9. The measuring device according to claim 8, characterized in that A balance spring is arranged between two adjacent push blocks in the annular track.

10. A wireline coring drilling tool, characterized in that: The drill rod and the portion of the measuring rod using the measuring device according to any one of claims 1 to 9.

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