Wire-line coring type measurement while drilling device and method

By using a rope core-type drilling measurement device arranged with thin-walled outer tube and inner wall thickening sensor in the rope core-retrieval device, the problems of low core rate and poor data accuracy in complex formations are solved, and efficient and safe drilling parameters monitoring and analysis are achieved.

CN120487064APending Publication Date: 2025-08-15INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
View PDF 0 Cites 1 Cited by

Patent Information

Application Number
CN202510849412.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-24
Publication Date
2025-08-15

AI Technical Summary

Technical Problem

The existing rope core extraction device has low core extraction rate, poor data accuracy and high labor cost in complex formations, which cannot meet the efficient and high-precision formation measurement needs.

Method used

A rope core-taking type drilling measurement device is designed, using a thin-walled outer tube to arrange the strain gauge and the outer annular pressure sensor, a thickened inner wall to arrange the inner annular pressure sensor, a temperature sensor, a three-axis vibration sensor, etc., and a magnetic buckle is installed on the inner tube to realize real-time data collection and storage, and combined with deep learning to analyze the rock formation parameters.

Benefits of technology

It realizes real-time acquisition of drilling parameters in complex environments, reduces failure risks, reduces labor and equipment maintenance costs, ensures data accuracy and completeness, and improves drilling efficiency and safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120487064A_ABST
    Figure CN120487064A_ABST
Patent Text Reader

Abstract

The invention discloses a wire-line coring type measurement-while-drilling device and a wire-line coring type measurement-while-drilling method. The device comprises an outer pipe, an inner pipe and a drill bit, wherein the outer pipe is coaxially sleeved with the inner pipe, and the drill bit is connected with the outer pipe. The inner pipe is provided with a spear mechanism, a measuring mechanism and a coring mechanism in the axial direction. The measuring mechanism comprises a processing circuit, at least one first sensing device and a first electric connection assembly, and the first sensing device is used for collecting first environment data between the outer pipe and the inner pipe; a second sensing device, a signal transmission link and a second electric connection assembly are arranged at the position, corresponding to the measuring mechanism, of the outer pipe, and the second sensing device is used for collecting second environment data of the external environment of the outer pipe. The second sensing device is electrically connected with the processing circuit through the signal transmission link, the second electric connection assembly and the first electric connection assembly in sequence, and the first electric connection assembly and the second electric connection assembly are connected when the inner pipe is located at a measurement position.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and in particular to a rope coring type measurement-while-drilling device and method. Background Art

[0002] Rope coring uses a rope-type coring tool to be lowered inside the drill pipe, allowing core samples to be quickly obtained without having to pull the drill out. The core principle is to use a rope to lower the coring tool from the inside of the drill pipe to the bottom of the well. After coring is completed, the core is quickly recovered via the rope, significantly reducing the number of trips and drills, improving operational efficiency and economy. Rope coring technology has been widely used due to its advantages such as high efficiency and time saving, no need to pull the drill out, and accelerated exploration cycles. However, with the increasing complexity of drilling, the requirements for rope coring in engineering projects are constantly increasing. Existing improved devices still have defects such as the inability to obtain drilling engineering parameters, a low coring rate when drilling into complex formations, which makes it difficult to obtain accurate data, and high labor costs, making it unable to meet the needs of efficient and high-precision formation measurements.

[0003] Conventional wireline coring tools primarily consist of a twin-tube drill string and a salvage hook. The twin-tube drill string further comprises an outer tube and an inner tube. The outer tube includes conventional outer tube components, a strain chamber, a pressure chamber, and a waterproof magnetic lock arrangement; the inner tube comprises conventional inner tube components, a spearhead with a magnetic lock, and a measurement chamber; and the salvage hook comprises conventional salvage hook components and a salvage hook with a magnetic lock. Recent technological developments include adding hydraulic hammers and rotary motors to the inner tube to improve efficiency, and integrating sensors into the outer tube to obtain drilling data.

[0004] However, wireline coring drilling devices with integrated outer tubes are susceptible to external interference, resulting in data deviations. Furthermore, the excessive number of sensors integrated into the outer tube results in excessive wall thickness, which mismatches the drill bit size and affects drilling efficiency. Therefore, a wireline coring measurement-while-drilling device and method are urgently needed to address these issues. Summary of the Invention

[0005] The object of the present invention is to provide a wireline coring type measurement while drilling device and method to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned objectives, the first aspect of the present invention discloses a rope coring-type downhole measurement device, the device comprising an outer tube, an inner tube coaxially sleeved on the outer tube, and a drill bit connected to the outer tube; the inner tube is axially provided with a spear scooping mechanism, a measuring mechanism and a coring mechanism; it is characterized in that the measuring mechanism comprises a processing circuit, at least one first sensing device and a first electrical connection component, the first sensing device collects first environmental data between the outer tube and the inner tube; the outer tube is provided with a second sensing device, a signal transmission link and a second electrical connection component at a position corresponding to the measuring mechanism, the second sensing device is used to collect second environmental data of the external environment of the outer tube, the second sensing device is electrically connected to the processing circuit through the signal transmission link, the second electrical connection component and the first electrical connection component in sequence, and the first electrical connection component and the second electrical connection component are connected when the inner tube is in the measuring position.

[0007] In some embodiments disclosed in the present invention, the spear scooping mechanism includes a recovery tube (4), the upper end of the recovery tube (4) is provided with a spear scooping head (2), the interior of the recovery tube (4) is provided with an axially movable spring clip (6), and the side wall of the recovery tube (4) is provided with a spring clip groove that allows the spring clip (6) to open and abut against the inner wall of the outer tube.

[0008] In some embodiments disclosed in the present invention, a card holder (11) is provided below the recovery pipe (4), and a card seat (10) for axial movement of the card (6) is formed between the card holder (11) and the card (6).

[0009] In some embodiments disclosed in the present invention, the lower portion of the card holder (11) is connected to the coring mechanism via an adjusting assembly.

[0010] In some embodiments disclosed in the present invention, the regulating assembly includes a valve body (13) arranged below the ejection bracket (11), and an elastic reset assembly is provided between the ejection bracket (11) and the valve body (13);

[0011] The lower end of the ejection bracket (11) is connected to an adjusting shaft, the valve body (13) extends out of the lower end of the ejection bracket (11) and is connected to the adjusting rod, the adjusting rod passes through the lower end of the adjusting shaft and is connected to a plug, the plug blocks the adjusting hole at the lower end of the adjusting shaft, and the side wall of the adjusting shaft is constructed with at least one water hole.

[0012] In some embodiments disclosed in the present invention, the lower end of the adjusting shaft is connected to a suspension ring (21), and the measuring mechanism is arranged above the suspension ring (21);

[0013] The outer tube is provided with the second sensing device, the signal transmission link and the second electrical connection component at a position close to the suspension ring (21).

[0014] In some embodiments disclosed in the present invention, the first electrical connection component is a magnetic buckle (331);

[0015] The second electrical connection component magnetic buckle 2 (332);

[0016] The magnetic buckle 1 (331) and the magnetic buckle 2 (332) are connected in a magnetic attraction manner.

[0017] In some embodiments disclosed herein, the measuring mechanism includes a measuring cabin;

[0018] The processing circuit and at least one first sensing device are arranged in the measuring cabin;

[0019] The first electrical connector is installed between the measuring cabin and the outer tube.

[0020] In some embodiments disclosed in the present invention, the measurement cabin is provided with the data storage chamber (34), the inner annular pressure chamber (35), the battery chamber (36), the outer annular pressure chamber (37), the strain chamber (38), the data acquisition chamber (39) and the temperature measurement chamber (40).

[0021] In a second aspect, the present invention discloses a wireline coring type measurement while drilling method, using the wireline coring type measurement while drilling device, the measurement method comprises the following steps:

[0022] The outer tube drives the drill bit to drill, the first sensing device and the second sensing device collect environmental data, and the processing circuit stores the environmental data; a salvage device cooperates with the spear fishing mechanism to remove at least the inner tube spear fishing mechanism, the measuring mechanism and the coring mechanism; and the environmental data stored in the processing circuit is read.

[0023] Compared to existing technologies, the present invention utilizes a thin-walled outer tube with strain gauges, an outer annular pressure sensor wired to a magnetic clasp that connects to the inner tube. The inner tube is thickened to house the inner annular pressure sensor, temperature sensor, triaxial vibration sensor, battery, NFC short-range magnetic communication interface, data acquisition template, and data storage module (self-contained and capable of storing data). The inner tube's spearhead is equipped with a magnetic clasp that connects to a fishing hook for real-time data transmission. This invention can acquire various parameters during drilling into deep rock formations in real time. Based on this information, deep learning and other methods can be used to inversely calculate the mechanical parameters and physical properties of the rock formation, which can then be compared with the obtained core for analysis and verification. This invention reduces the risk of failure caused by complex equipment, while also reducing labor and maintenance costs. Combined with advanced data analysis techniques, it can promptly identify potential problems and risks, enabling real-time monitoring and optimization of drilling parameters, thereby improving efficiency. The present invention also stores data in a module to prevent various unexpected situations, such as signal interference and attenuation during real-time data transmission, ensuring data accuracy and integrity. It is also adaptable to complex environments, such as those with high temperature, high pressure, and high radiation. Compared with traditional rope coring devices, the present invention has the ability to measure bit pressure, torque, internal and external annular pressure and temperature, providing reliable protection for the safe and continuous drilling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 It is the structural front view of the present invention.

[0026] Figure 2 It is the front view of the internal local structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the salvage structure of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the present invention.

[0029] Description of reference numerals:

[0030] 1. Spring stopper; 2. Spearhead; 201. Spearhead communication magnetic buckle; 3. Spring pin; 4. Recovery tube; 5. Spring 1; 6. Spring; 7. Spring chamber; 8. Spring pin 1; 9. Spring pin 2; 10. Spring seat; 11. Spring frame; 12. Return spring; 13. Valve body; 14. Upper positioning spring; 15. Screw; 16. Positioning sleeve; 17. Washer; 18. Retaining ring; 19. Lower positioning spring; 20. Adjusting screw; 21. Suspension ring; 22. Seat ring; 23. Hole expander; 2 4. Joint; 25. Sleeve; 26. Shaft; 27. Disc spring; 28. Gasket; 29. Bearing 1; 31. Bearing 2; 30. Bearing seat; 32. Spring pin 3; 33. Measuring cabin communication magnetic buckle pair; 331. Magnetic buckle 1; 332. Magnetic buckle 2; 34. Data storage chamber; 35. Inner annular pressure chamber; 36. Battery chamber; 37. Outer annular pressure chamber; 38. Strain chamber; 39. Data acquisition chamber; 40. Temperature measurement chamber; 41. Salvage hook; 411. Salvage hook communication magnetic buckle. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figures 1 to 4 As shown, an embodiment of the present invention discloses a wireline coring measurement-while-drilling device. The device includes an outer tube, an inner tube, and a drill bit. The outer tube serves as the drill rod, the inner tube serves as the wireline coring section that follows the drill rod during drilling, and the drill bit serves as the drilling section that cooperates with the drill rod.

[0033] In the present invention, the inner tube is provided with a spear scooping mechanism, a measuring mechanism and a coring mechanism in sequence along the axial direction.

[0034] The spear scooping mechanism includes a portion of a recovery tube 4 disposed within an outer tube. The recovery tube 4 is connected to the spear scooping head 2 via at least one spring pin 3. A spring catch 6 is disposed below the recovery tube 4. The spring catch 6 comprises a spring catch column that moves axially up and down within the recovery tube 4, a V-shaped spring catch secured to the spring catch column, and a V-shaped spring 5. The V-shaped ends of the V-shaped spring 5 are controlled by the spring 5 to move closer or further apart. The recovery tube 4 has a spring catch slot axially defined near the spring catch 6. This slot allows the V-shaped ends of the V-shaped spring 5 to extend between the outer tube and the recovery tube 4.

[0035] Furthermore, an ejection card rack 11 is fixedly connected to the lower side of the recovery pipe 4 , and an ejection card seat 10 for axial movement of the ejection card column is formed between the ejection card rack 11 and the ejection card 6 .

[0036] Furthermore, the spear scooping mechanism in this embodiment further includes an adjusting component.

[0037] The adjustment assembly includes a valve body 13, which serves as the valve shaft. The upper section of the valve body 13 is axially restrained within the detent holder 11, while the lower section extends beyond the detent holder 11. The upper section of the valve body 13 is restrained in axial movement within the detent holder 11 by an elastic member. The detent holder 11 defines an upper adjustment slot and a lower adjustment slot axially downward, with the lower adjustment slot having a larger diameter than the upper adjustment slot. A return spring 12 is positioned between the top of the valve body 13 and the top of the upper adjustment slot. The lower adjustment slot is axially divided into an upper chamber and a lower chamber by a retaining ring 18. The portion of the valve body 13 within the upper chamber is circumferentially fixedly connected to a retaining sleeve 16. An upper retaining spring 14 is axially connected to the retaining sleeve 16, with a gasket interposed between the retaining sleeve 16 and the retaining ring. The portion of the valve body 13 within the lower chamber is sheathed by a lower retaining spring 19. The upper end of the retaining spring 19 is connected to the retaining ring 18, and the lower end is fixedly connected to an adjustment screw 20. The adjusting screw 20 is connected to the lower cavity along the axial thread.

[0038] The adjustment assembly also includes an adjustment shaft and an adjustment rod. The adjustment shaft is axially fixed to the lower end of the ejection bracket 11. The adjustment shaft is hollow, with an adjustment hole at its bottom and a water hole in its side that flows into the outer tube. The adjustment rod extends axially downward through the adjustment hole, and a plug is provided at the portion of the rod that exits the adjustment hole to seal it.

[0039] Preferably, the positioning sleeve 16 is fixedly connected to the valve body 13 via screws 15 .

[0040] Furthermore, the lower end of the adjustment shaft is connected to a suspension ring 21, which enables relative axial rotation. A seat ring 22 is provided on the outer tube near the suspension ring 21, which cooperates with the suspension ring 21. The coring mechanism is axially arranged below the adjustment shaft and rotates relative to the adjustment shaft via the suspension ring 21. Preferably, the suspension ring 21 may be a bearing member for axial load bearing. The adjustment shaft and the coring mechanism are connected to different ends of the bearing member, which are relatively rotatable.

[0041] In some embodiments, the coring mechanism of the inner tube can be configured to rotate synchronously with the rest of the inner tube and the outer tube. Therefore, the optional suspension ring 21 can be configured as a fixed member connected between the adjustment shaft and the coring mechanism, with the suspension ring 21 simply being used to cooperate with the seat ring 22 to block the measuring mechanism.

[0042] Preferably, a reamer 23 is provided on the inner wall of the outer tube.

[0043] Furthermore, a joint 24 is provided on the outside of the seat ring 22, a sleeve 25 is provided on the outside below the joint 24, a shaft 26 is inserted into the bottom end of the sleeve 25, a disc spring 27 is provided on the outside of the shaft 26, and a spring pin 32 is provided on the outside of the sleeve 25. The shaft 26 can be connected to the coring mechanism through the sleeve. The coring mechanism in this embodiment is a prior art, such as a core barrel, and will not be described in detail here. It is worth mentioning that the combination of the spear scooping mechanism and the coring mechanism is a key component of the coring rod in the prior art. The measuring mechanism can be understood as a combination of electrical components arranged between the spear scooping mechanism and the coring mechanism, or arranged on the rod wall portion of the spear scooping mechanism or the coring mechanism corresponding to the coring rod. Therefore, the present invention does not limit the positional relationship of the measuring mechanism relative to the spear scooping mechanism or the coring mechanism. This embodiment only provides an exemplary positional relationship and structural composition of a measuring mechanism to illustrate its possible implementation prospects.

[0044] To this end, in this embodiment, the inner tube is provided with a portion of a measuring mechanism on the sidewall of the adjustment shaft near the suspension ring 21, and another portion of the measuring mechanism is provided on the outer tube portion corresponding thereto. The measuring mechanism includes a processing circuit disposed around the sidewall of the adjustment shaft, at least one first sensing device, and a first electrical connection assembly. The first sensing device collects first environmental data between the outer and inner tubes. In conjunction with the measuring mechanism, the outer tube is provided with an outward-facing second sensing device, a signal transmission link, and an inward-facing second electrical connection assembly at a corresponding position on its sidewall. The second sensing device is used to collect second environmental data of the environment outside the outer tube. The second sensing device is electrically connected to the processing circuit via the signal transmission link, the second electrical connection assembly, and the first electrical connection assembly in sequence. The first and second electrical connection assemblies are connected when the inner tube is in the measuring position (e.g., the inner tube is held in a fixed position by the suspension ring 21).

[0045] Specifically, the various circuit units in the processing circuit are distributed in the data storage chamber 34, battery chamber 36, data acquisition chamber 39, and other locations. Multiple first sensing devices are distributed in the inner annular pressure chamber 35 and temperature measurement chamber 40, among other locations. The various circuit units and first sensing devices on the inner tube are electrically connected via wiring similarly provided on the inner tube's sidewalls. Multiple second sensing devices are distributed in the outer annular pressure chamber 37 and strain chamber 38, among other locations. The first and second electrical connection components are the first and second magnetic clasps 331 and 332 of the measurement chamber communication magnetic clasp pair 33. Therefore, the measuring cabin is composed of a communication magnetic buckle 33 of the measuring cabin, a data storage chamber 34, an inner annular pressure chamber 35, a battery chamber 36, an outer annular pressure chamber 37, a strain chamber 38, a data acquisition chamber 39 and a temperature measurement chamber 40. The battery is arranged inside the battery chamber 36. It is a detachable, rechargeable waterproof battery that provides energy for the sensor operation, data acquisition and storage module. A three-axis vibration sensor is arranged on the inside of the temperature measurement chamber 40. It is a posture sensor chip that can support the serial port to measure three-axis vibration velocity, acceleration, displacement, frequency, etc. A temperature sensor is arranged on the inside of the temperature measurement chamber 40, which generates a change in resistance value at the same time as the temperature change of the flushing fluid, and obtains temperature data through the action of the data acquisition module. There is an NFC short-range magnetic communication interface inside the data storage chamber 34, which can support workers to use NFC to realize secondary data reading after taking out the core. A data storage module is also arranged inside the data storage chamber 34, and the software and hardware work together to write data into the NANA Flash The SSD uses technologies like RAID and ECC to protect data, ensuring efficient storage and stable access. A data acquisition module is housed within data acquisition chamber 39. The sensor output signal is amplified and noise-reduced by the module's conditioning circuitry. The conditioned analog signal is then converted to a digital signal via an analog-to-digital converter (ADC). The digital signal is further processed by a microcontroller (MCU) or digital signal processor (DSP), undergoing calibration, filtering, and unit conversion to obtain the required data, which is then transmitted to the data storage module via a cable hole. The outer annular pressure sensor within outer annular pressure chamber 37 deforms the silicon diaphragm due to external liquid pressure, causing a change in resistance. The acquisition module then obtains outer annular pressure data.

[0046] In some embodiments, the adjustment component is not provided in the spearing mechanism. The measuring mechanism can be arranged in the side wall groove of the recovery pipe 4.

[0047] The inner tube is an irregular thick-walled cylindrical structure. A slot is cut into the sidewall of the upper half of the inner tube, near the spearhead, to house the inner annulus pressure sensor, a Platinum Thermite PT100 temperature sensor, a data acquisition module, a data storage module, a battery, a triaxial vibration sensor, an NFC short-range magnetic communication interface, and a magnetic clasp. The outer tube, corresponding to the inner tube, is a thin-walled cylindrical structure. A strain chamber housing a 120-3CA-D150 strain chamber and a pressure chamber housing an RS485 communication outer annulus pressure sensor are located on the sidewall above the outer tube's suspension ring. A magnetic clasp is installed on the inner wall of the outer tube.

[0048] Preferably, a snap-on stopper 1 is provided at the top of the outer tube. Connected to the top of this stopper is a fishing hook 41, which is mounted on the overshot device to enable real-time data transmission during salvage. When the fishing hook 41 is engaged with the fishing head 2, the hook's communication magnetic clasp 411 electrically connects to the spearhead's communication magnetic clasp 201, establishing a communication link between the devices in the measurement chamber and the outside world, enabling real-time transmission of sensor-collected data out of the wellbore.

[0049] It's worth mentioning that when an external force is applied to an elastomeric diaphragm with strain gauges attached, the base diaphragm and the strain gauges attached to it undergo physical deformation, causing the resistance of the strain gauges to change, thereby changing the voltage. The specific WOB torque value is obtained through signal acquisition and calculation by the circuit. The strain gauges form a half-bridge or full-bridge four-strain gauge measurement method. The arrangement of the strain chambers should be variable to reduce the influence of stress concentration when grooving the cylindrical sidewall. The spacing of the strain chambers is greater than 2.5*d. The WOB torque is measured according to the different arrangement angles of the strain gauges. To further reduce errors and sense pressure and torque in different directions, three sets of measurement bridges are formed to calculate the WOB and torque based on the changes in resistance.

[0050] Furthermore, embodiments of the present invention disclose a wireline coring measurement-while-drilling method. The measurement method comprises the following steps: driving the drill bit through the outer tube, collecting environmental data by the first and second sensing devices, and processing and storing the collected environmental data by the processing circuit. A fishing device cooperates with the spear mechanism to remove at least the inner tube spear mechanism, the measurement mechanism, and the coring mechanism. The environmental data stored by the processing circuit is read.

[0051] Among them, when the combined rope coring self-contained engineering parameter measurement device is drilling, the outer tube drives the drill bit to rotate, and the sensor arrangement of the inner tube is fixed at the spring clip and other parts to rotate synchronously with the outer tube, ensuring data collection during the drilling process. The core tube of the inner tube is separated from the sensor arrangement of the inner tube by a suspension mechanism, and the core tube does not rotate with the rotation of the upper part of the inner tube, ensuring the integrity of the drilled core. Through holes are constructed between the necessary components and structures to ensure normal signal transmission. They are connected to the magnetic buckle on the salvage spear. When the salvage device and the salvage spear are connected to each other, the magnetic buckle connection communication is normal, and the data is uploaded to the host computer and stored. The deep learning model is trained in real time based on the drilling pressure, torque, temperature, internal and external annular space data, and the drilled core. Then, the rock properties can be predicted in real time during drilling and salvage.

[0052] The test process in this embodiment involves connecting the inner tube to the outer tube, the suspension ring contacting the seat ring, the spring latch opening, and entering the spring latch chamber to achieve relative positioning. The suspension ring and the magnetic interface on the seat ring begin to connect. The strain measurement module measures the strain value of the outer tube, and various sensors begin recording data. After drilling is completed, the overshot is lowered, the spearhead is clamped to the inner tube, and then lifted up. During the lifting process, data reading and charging are achieved. The inner tube is salvaged to the wellhead, and workers operate to remove the core. NFC short-range communication can also be used to read the data again. After the core and data are removed, the inner tube can be returned to the drill pipe, and the second drilling operation can begin.

[0053] 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.

[0054] 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 wireline coring measurement while drilling device, The device includes an outer tube, an inner tube coaxially sleeved on the outer tube, and a drill bit connected to the outer tube; The inner tube is provided with a spearing mechanism, a measuring mechanism and a coring mechanism along the axial direction; It is characterized by: The measuring mechanism includes a processing circuit, at least one first sensing device and a first electrical connection component, wherein the first sensing device collects first environmental data between the outer tube and the inner tube; The outer tube is provided with a second sensing device, a signal transmission link and a second electrical connection component at a position corresponding to the measuring mechanism. The second sensing device is used to collect second environmental data of the external environment of the outer tube. The second sensing device is electrically connected to the processing circuit through the signal transmission link, the second electrical connection component and the first electrical connection component in sequence. The first electrical connection component and the second electrical connection component are connected when the inner tube is in the measuring position.

2. The wireline coring measurement while drilling device according to claim 1, characterized in that: The spear catching mechanism comprises a recovery tube (4), the upper end of which is provided with a spear catching head (2), the interior of which is provided with an axially movable spring clip (6), and the side wall of which is provided with a spring clip groove allowing the spring clip (6) to open and abut against the inner wall of the outer tube.

3. The wireline coring measurement while drilling device according to claim 2, characterized in that: An ejection card rack (11) is provided below the recovery pipe (4), and an ejection card seat (10) for the ejection card (6) to move axially is formed between the ejection card rack (11) and the ejection card (6).

4. The wireline coring measurement while drilling device according to claim 4, characterized in that: The lower portion of the card holder (11) is connected to the coring mechanism via an adjusting assembly.

5. The wireline coring measurement while drilling device according to claim 5, characterized in that: The regulating assembly comprises a valve body (13) arranged below the spring-loaded holder (11), and an elastic reset assembly is provided between the spring-loaded holder (11) and the valve body (13); The lower end of the ejection bracket (11) is connected to an adjusting shaft, the valve body (13) extends out of the lower end of the ejection bracket (11) and is connected to the adjusting rod, the adjusting rod passes through the lower end of the adjusting shaft and is connected to a plug, the plug blocks the adjusting hole at the lower end of the adjusting shaft, and the side wall of the adjusting shaft is constructed with at least one water hole.

6. The wireline coring measurement while drilling device according to claim 1, characterized in that: The lower end of the adjusting shaft is connected to a suspension ring (21), and the measuring mechanism is arranged above the suspension ring (21); The outer tube is provided with the second sensing device, the signal transmission link and the second electrical connection component at a position close to the suspension ring (21).

7. The wireline coring measurement while drilling device according to claim 1, characterized in that: The first electrical connection component is a magnetic buckle (331); The second electrical connection component magnetic buckle 2 (332); The magnetic buckle 1 (331) and the magnetic buckle 2 (332) are connected in a magnetic attraction manner.

8. The wireline coring measurement while drilling device according to claim 1, characterized in that: The measuring mechanism includes a measuring cabin; The processing circuit and at least one first sensing device are arranged in the measuring cabin; The first electrical connector is installed between the measuring cabin and the outer tube.

9. The wireline coring measurement while drilling device according to claim 1, characterized in that: The measurement cabin is provided with the data storage chamber (34), an inner annular pressure chamber (35), a battery chamber (36), an outer annular pressure chamber (37), a strain chamber (38), a data acquisition chamber (39) and a temperature measurement chamber (40).

10. A wireline coring-type measurement while drilling method, using the wireline coring-type measurement while drilling device according to any one of claims 1 to 9, characterized in that: The measuring method comprises the following steps, The outer tube drives the drill bit to drill, the first sensing device and the second sensing device collect environmental data, and the processing circuit stores the environmental data; At least the inner tube spear mechanism, the measuring mechanism and the coring mechanism are removed by using a salvage device in cooperation with the spear mechanism; The environmental data stored in the processing circuit is read.

Citation Information

Cited By

  • Rope type coring drilling tool device and method capable of carrying out tensile strength in-situ test

    CN121185747A