Orifice drill rod direction accurate measuring device and method

Abstract

The invention provides an orifice drill rod direction accurate measuring device and method, and relates to the technical field of well drilling, the direction accurate measuring device comprises a drill rod, a pipe-following drill bit and a signal receiver; the drill rod comprises an upper sleeve and an anti-abrasion sleeve, and a driving motor and a position nail launching bin are arranged in the drill rod; the driving motor is arranged in the upper sleeve in a sliding mode, the upper end of the positioning nail launching bin is connected with an output shaft of the driving motor, and a positioning nail launcher is arranged on the positioning nail launching bin and used for launching positioning nails so that the positioning nails can be embedded into the side wall of the well body. The method has the beneficial effects that a plurality of positioning nails can be transmitted along a drilling path of a drill bit by using a measuring device, the positioning nails can form a local area network, the positioning nails transmit positioning information to a signal receiver, and the positioning information is mutually checked, so that the positioning accuracy is improved. Therefore, the orifice drill rod orientation accurate measuring device can accurately position the accurate motion trail of the drill rod and the drill bit orientation data, and the drilling angle of the drill rod can be conveniently adjusted in real time.

Description

Technical Field

[0001] The invention relates to the technical field of drilling, and in particular to a device and method for accurately measuring the orientation of a borehole drill pipe. Background Art

[0002] When detecting deep voids in the formation, accurate positioning of the bottom hole detection device is crucial, and the basis for bottom hole positioning is the borehole drill pipe azimuth data. It is crucial to give the borehole azimuth, and correctly giving the borehole azimuth is an important factor in measuring the borehole control range. Traditional methods for measuring the borehole drill pipe azimuth usually use sensors such as gyroscopes or compasses for measurement. However, these sensors are usually set separately on the drill pipe, and the positions of these sensors are constantly changing during the drilling process. In addition, a single sensor may be affected by magnetic field interference, temperature changes, or drift caused by long-term use, thereby affecting the measurement accuracy and stability.

[0003] In addition, underground drilling operations often involve magnetic materials or geomagnetic anomalies. These factors may interfere with the sensor's measurement results, resulting in inaccurate azimuth measurements. At the same time, a single sensor lacks real-time monitoring and calibration capabilities, and the bottom hole detection device cannot obtain real-time changes in the drill pipe's azimuth in a timely manner, which limits the bottom hole detection device's ability to adjust the drilling angle in real time and control the drilling operation. Summary of the invention

[0004] In view of this, the present invention provides a device for accurately measuring the azimuth of a borehole drill pipe, comprising a drill pipe, a pipe-following drill bit and a signal receiver;

[0005] The drill rod comprises an upper casing and an anti-wear sleeve, and a driving motor and a position nail launching chamber are arranged inside the drill rod;

[0006] The drive motor is slidably arranged in the upper casing, the upper end of the position nail launching chamber is connected to the output end of the drive motor, the lower end of the position nail launching chamber is fixedly connected to the anti-wear sleeve, the drill bit is connected to the lower end of the anti-wear sleeve, and the lower end of the upper casing and the upper end of the anti-wear sleeve are respectively provided with an upper rotating connection bayonet and a lower rotating connection bayonet;

[0007] The position nail launching chamber is provided with a position nail launching hole, the position nail launching hole is provided with a position nail launcher and a positioning position nail installed on the position nail launcher; the positioning position nail is provided with a sensor module and a signal transmitting module;

[0008] The driving motor is used to drive the anti-wear sleeve to rotate, so that the lower rotating connecting bayonet on the anti-wear sleeve and the lower rotating connecting bayonet on the upper casing are disengaged, so that the anti-wear sleeve moves downward relative to the upper casing under the action of gravity, thereby exposing the positioning nail launching chamber from between the upper casing and the anti-wear sleeve; the positioning nail launcher is used to launch the positioning nail, so that the positioning nail is embedded in the side wall of the well body; the sensor module is used to obtain the position information of the positioning nail, the signal transmitting module is used to send the position information obtained by the sensor module to the signal receiver, and the signal receiver is used to receive the position information and measure the position and angle of the pipe following drill bit according to the position information.

[0009] Furthermore, the positioning pin launching hole is perpendicular to the positioning pin launching chamber, and the positioning pin launcher launches the positioning pin along the positioning pin launching hole in a direction perpendicular to the positioning pin launching chamber.

[0010] Furthermore, a thrust block is provided in the upper sleeve, and the thrust block is used to limit the sliding distance of the driving motor.

[0011] Furthermore, an upper shock-absorbing spring is provided in the upper sleeve, a lower shock-absorbing spring is provided in the anti-wear sleeve, the upper shock-absorbing spring is sleeved outside the driving motor, and the lower shock-absorbing spring is sleeved outside the positioning nail launching chamber.

[0012] Furthermore, the drill rod is a cable drill rod, a cable connector is provided in the upper casing, and the cable connector is connected to the drive motor.

[0013] Furthermore, there are multiple nail launching holes, and the multiple nail launching holes are relatively arranged on the nail launching bin in the upper and lower directions.

[0014] The present invention also provides a method for accurately measuring the orientation of a borehole drill pipe, the device for accurately measuring the orientation of a borehole drill pipe, the method comprising the following steps:

[0015] S1: Connect the drill bit to the lower end of the drill pipe, and connect the upper end of the drill pipe to the drilling rig;

[0016] S2: The drilling rig drives the drill pipe and the pipe drill bit to rotate, and the pipe drill bit drills into the formation;

[0017] S3: After reaching the predetermined depth, the driving motor drives the nail launching chamber to rotate, so that the lower rotating connecting bayonet on the anti-wear sleeve and the lower rotating connecting bayonet on the upper casing are disengaged;

[0018] S4: The drilling rig lifts the drill rod, and the anti-wear sleeve moves downward relative to the upper casing under the action of gravity, so that the positioning nail launching chamber is exposed from between the upper casing and the anti-wear sleeve; the positioning nail launcher launches the positioning nail in a direction perpendicular to the positioning nail launching chamber, and the positioning nail is embedded in the side wall of the well body; the positioning nail obtains the position information and sends it to the signal receiver, and the signal receiver obtains the position information to calculate the position and angle of the following drill bit.

[0019] Furthermore, the method further comprises the following steps:

[0020] S5: The drilling rig presses down the drill rod, so that the lower rotating connection bayonet on the anti-wear sleeve and the lower rotating connection bayonet on the upper casing are closed, and the driving motor drives the position nail launching chamber to reset, so that the lower rotating connection bayonet and the upper rotating connection bayonet are engaged, and the drilling rig drives the drill rod to rotate and continue drilling;

[0021] S6: Repeat the above steps S3-S5, so that a nail is driven into the well wall at intervals, thereby obtaining a drilling trajectory of the pipe-following drill bit.

[0022] Furthermore, the method further comprises the following steps:

[0023] The positioning pin is provided with an inclination gyroscope and a sonar rangefinder; the signal receiver includes a positioning device,

[0024] In step S4, the signal receiver calculates the position and angle of the drill bit as follows: the positioning pin is measured by the sonar rangefinder, and the sonar sensor transmits sound waves to the locator on the ground, so that the distance from the positioning pin to the locator can be measured; the inclination sensor measures the inclination angle of the pin, and the signal receiver obtains the vertical distance of drilling through trigonometric relationship and integration method, and then determines the direction of the positioning pin from the ground locator by converting the side length and angle of the trigonometric relationship.

[0025] The beneficial effects of the device and method for accurately measuring the azimuth of a borehole drill pipe of the present invention are as follows:

[0026] 1) The measuring device of the present invention measures the position of the drill rod during drilling by arranging a position nail launching cabin on the drill rod for launching position nails, and a shock absorbing spring, an anti-wear sleeve and a thrust slider are installed inside the drill rod to reduce the vibration during the drilling process and improve the position nail launching accuracy.

[0027] 2) The measuring device of the present invention launches the positioning nail through the upper and lower separation protection tube transmission mechanism. During the drilling process, the upper and lower protection tubes are butted and closed, and the launch cabin is protected inside. When reaching the designated position, the upper and lower protection tubes are separated, and the launch cabin launches the positioning nail. Each positioning nail is an independent system, and all data will not be lost due to damage to a certain sensor.

[0028] 3) In the measurement method of the present invention, each emitted position pin can be used to calculate the azimuth data through the data obtained by the sensor, and the azimuth of each position pin forms a local area network, so as to obtain the drilling trajectory and real-time azimuth data of the drill pipe, and track its movement, which is important for controlling the drilling depth, avoiding deviation, and avoiding conflicts with other underground structures. At the same time, the method emits multiple positioning pins along the drilling path of the drill bit, and these positioning pins can form a local area network. The positioning information emitted by multiple positioning pins to the signal receiver and the mutual verification, so that the hole mouth drill pipe azimuth accurate measurement device can accurately locate the precise movement trajectory of the drill pipe and the drill pipe azimuth data of the hole mouth, which is convenient for adjusting the drilling angle of the drill pipe and the management of drilling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a structural schematic diagram of a device for accurately measuring the azimuth of a borehole drill rod in a drill rod opening state according to an embodiment of the present invention.

[0030] Figure 2 The present invention is a schematic structural diagram of a device for accurately measuring the orientation of a borehole drill pipe in a closed state according to an embodiment of the present invention.

[0031] Figure 3 The present invention is a working principle diagram of a positioning pin of a device for accurately measuring the orientation of a borehole drill pipe according to an embodiment of the present invention.

[0032] Figure 4 The present invention discloses a flow chart of a device and method for accurately measuring the orientation of a borehole drill pipe.

[0033] In the above figure: 1-upper casing, 11-upper rotating connecting bayonet, 12-thrust bearing, 13-upper shock-absorbing spring, 14-thrust slider, 2-anti-wear sleeve, 21-lower rotating connecting bayonet, 22-axis connector, 23-lower shock-absorbing spring, 3-position nail launching chamber, 31-position nail launching device, 4-positioning position nail, 5-following pipe drill bit, 6-driving motor, 7-cable connector, 71-connecting cable, 8-signal receiver. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0035] Please refer to Figures 1 to 3 The device for accurately measuring the orientation of a borehole drill pipe of the present invention comprises a drill pipe, a follow-up drill bit 5 and a signal receiver 8.

[0036] The drill pipe is a hollow structure, including an upper casing 1 and an anti-wear sleeve 2. The upper casing 1 and the anti-wear sleeve 2 are separated. Asana settings, The two can be separated and closed, and a driving motor 6 and a nail launching chamber 3 are arranged in the drill rod.

[0037] The driving motor 6 is slidably arranged in the upper casing 1, and the driving motor 66 can slide up and down in the upper casing 1. The output shaft of the driving motor 6 is limited in the upper casing 1 by the thrust bearing 12. The thrust bearing 12 can make the output shaft of the driving motor 6 rotate stably. The upper end of the position nail launching chamber 3 is connected to the output shaft of the driving motor 6, and the lower end of the position nail launching chamber 3 is fixedly connected to the anti-wear sleeve 2 through the shaft connector 22. In this way, the motor 6 can drive the anti-wear sleeve 2 and the position nail launching chamber 3 to rotate as a whole. The follow-up drill bit 5 is connected to the lower end of the anti-wear sleeve 2, and the lower end of the upper casing 1 and the upper end of the anti-wear sleeve 2 are respectively provided with an upper rotating connecting bayonet 11 and a lower rotating connecting bayonet 21.

[0038] The pin launching chamber 3 is provided with a pin launching hole, in which a pin launcher 31 and a positioning pin 4 installed on the pin launcher 31 are arranged; the positioning pin 4 is provided with a sensor module and a signal transmitting module.

[0039] The driving motor is used to drive the anti-wear sleeve 2 to rotate, so that the lower rotating connecting bayonet 21 on the anti-wear sleeve 2 and the lower rotating connecting bayonet 21 on the upper casing 1 are disengaged, so that the anti-wear sleeve 2 moves downward relative to the upper casing 1 under the action of gravity, thereby exposing the positioning nail launching chamber 3 from between the upper casing and the anti-wear sleeve 2; the positioning nail launcher 31 is used to launch the positioning nail 4, so that the positioning nail 4 is embedded in the side wall of the well body; the sensor module is used to obtain the position information of the positioning nail 4, and the signal transmitting module is used to send the position information obtained by the sensor module to the signal receiver 8, and the signal receiver 8 is used to receive the position information and measure the position and angle of the pipe following drill bit 5 according to the position information.

[0040] When the device for accurately measuring the orientation of the drill pipe at the hole mouth is working, the positioning pin transmitter 31 can be used to transmit multiple positioning pins 4 along the drilling direction of the follow-pipe drill bit 5. These positioning pins 4 sense their relative positions through the sensor module and the signal transmission module, so that these positioning pins 4 can form a local area network and verify the position information with each other to ensure that the signal receiver 8 can accurately receive the position information of all positioning pins 4, thereby enabling the device for accurately measuring the orientation of the drill pipe at the hole mouth to accurately locate the precise movement trajectory of the drill pipe and the orientation data of the drill pipe at the hole mouth, which is convenient for adjusting the drilling angle of the drill pipe and managing the drilling operation.

[0041] In a preferred embodiment, the positioning nail launching hole is perpendicular to the positioning nail launching chamber 3, and the positioning nail launcher 31 launches the positioning nail 4 along the positioning nail launching hole in a direction perpendicular to the positioning nail launching chamber 3, so that the positioning nail 4 can determine the drilling angle of the lower end of the positioning drill rod through its own incident angle.

[0042] In a preferred embodiment, a thrust block 14 is further provided in the upper casing 1, and the thrust block 14 is used to limit the sliding distance of the drive motor to prevent the drive motor from slipping out of the upper casing and causing failure of the entire hole drill pipe azimuth precise measurement device.

[0043] In a preferred embodiment, an upper shock-absorbing spring 13 is further provided in the upper casing 1, and a lower shock-absorbing spring 23 is provided in the anti-wear sleeve 2. The upper shock-absorbing spring 13 is sleeved on the outside of the driving motor 6, and the lower shock-absorbing spring 23 is sleeved on the outside of the position nail launching chamber 3. The upper shock-absorbing spring 13 and the lower shock-absorbing spring 23 are used to buffer the impact force when the upper casing 1 and the anti-wear sleeve 2 are separated, and reduce the vibration of the drill rod during the drilling process, thereby improving the position nail launching accuracy.

[0044] In a preferred embodiment, the drill rod is a cable drill rod, and a cable connector 7 is provided in the upper casing 1. The cable connector 7 is connected to the drive motor 6 and the position nail launcher 31 through a connecting cable 71, thereby interfering to enable the drive motor 6 to be connected to the imported control device, so that the staff can control the separation and closing process of the upper casing 1 and the anti-wear sleeve 2 and the process of the position nail launcher 31 launching the positioning nail 4.

[0045] In a preferred embodiment, there are multiple positioning nail launching holes, and the multiple positioning nail launching holes are relatively arranged on the positioning nail launching chamber 3 up and down, so that the positioning nail launching chamber 3 can launch multiple positioning nails 4, and the multiple positioning nails 4 cooperate with each other to complete the precise movement trajectory of the drill rod and the positioning process of the drill rod orientation of the hole mouth.

[0046] refer to Figure 4 The present invention also provides a method for accurately measuring the orientation of a borehole drill pipe, the method using the above-mentioned device for accurately measuring the orientation of a borehole drill pipe, and the method comprises the following steps:

[0047] S1: Connect the pipe drill bit 5 to the lower end of the drill pipe, and connect the upper end of the drill pipe to the drilling rig;

[0048] S2: The drilling rig drives the drill pipe and the pipe drill bit 5 to rotate, and the pipe drill bit 5 drills into the formation;

[0049] S3: After reaching the predetermined depth, the driving motor 6 drives the nail launching chamber 3 to rotate, so that the lower rotating connecting bayonet 21 on the anti-wear sleeve 2 and the lower rotating connecting bayonet 21 on the upper casing 1 are disengaged;

[0050] S4: The drilling rig lifts the drill rod, and the anti-wear sleeve 2 moves downward relative to the upper casing 1 under the action of gravity, thereby exposing the space between the upper casing 1 and the anti-wear sleeve 2 in the positioning nail launching chamber 3; the positioning nail launcher 31 launches the positioning nail 4 in a direction perpendicular to the positioning nail launching chamber 3, and the positioning nail 4 is embedded in the side wall of the well body; the positioning nail 4 obtains the position information and sends it to the signal receiver 8, and the signal receiver 8 obtains the position information to calculate the position and angle of the follow-up drill bit 5.

[0051] In a preferred embodiment, the method further comprises the following steps:

[0052] S5: The drilling rig presses down the drill rod, so that the lower rotating connection bayonet 21 on the anti-wear sleeve 2 and the lower rotating connection bayonet 21 on the upper casing 1 are closed, and the driving motor 6 drives the position nail launching chamber 3 to reset, so that the lower rotating connection bayonet 21 and the lower rotating connection bayonet 21 are engaged, and the drilling rig drives the drill rod to rotate and continue drilling;

[0053] S6: Repeat the above steps S3-S5, so that a nail is driven into the well wall at intervals, thereby obtaining a drilling trajectory of the pipe-following drill bit.

[0054] In a preferred embodiment, the method further comprises the steps of:

[0055] The positioning pin 4 is provided with an inclination gyroscope and a sonar rangefinder; the signal receiver 8 is provided with a positioning device;

[0056] In step S4, the signal receiver 8 calculates the position and angle of the follow-up drill bit 5 in the following process: the positioning pin 4 is measured by the sonar rangefinder sonar sensor to transmit sound waves to the locator on the ground, and the distance from the positioning pin 4 to the locator can be measured; the inclination sensor measures the inclination angle of the positioning pin, and the signal receiver 8 obtains the vertical distance of drilling through trigonometric relationship and integration method, and then converts the side length and angle to obtain the azimuth of the positioning pin 4 from the ground locator.

[0057] Among them, in step S4, multiple positioning pins 4 in the well drilled by the drill pipe sense their relative positions through the sensor module and the signal transmission module, so that these positioning pins 4 can form a local area network, verify the position information with each other, and ensure that the signal receiver 8 can accurately receive the position information of all positioning pins 4.

[0058] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0059] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0060] 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 device for accurately measuring the position of a borehole drill pipe, characterized in that: Including drill pipe, pipe drill bit and signal receiver; The drill rod comprises an upper casing and an anti-wear sleeve, and a driving motor and a position nail launching chamber are arranged inside the drill rod; The drive motor is slidably arranged in the upper casing, the upper end of the position nail launching chamber is connected to the output end of the drive motor, the lower end of the position nail launching chamber is fixedly connected to the anti-wear sleeve, the drill bit is connected to the lower end of the anti-wear sleeve, and the lower end of the upper casing and the upper end of the anti-wear sleeve are respectively provided with an upper rotating connection bayonet and a lower rotating connection bayonet; The position nail launching chamber is provided with a position nail launching hole, the position nail launching hole is provided with a position nail launcher and a positioning position nail installed on the position nail launcher; the positioning position nail is provided with a sensor module and a signal transmitting module; The driving motor is used to drive the anti-wear sleeve to rotate, so that the lower rotating connecting bayonet on the anti-wear sleeve and the lower rotating connecting bayonet on the upper casing are disengaged, so that the anti-wear sleeve moves downward relative to the upper casing under the action of gravity, thereby exposing the positioning nail launching chamber from between the upper casing and the anti-wear sleeve; the positioning nail launcher is used to launch the positioning nail, so that the positioning nail is embedded in the side wall of the well body; the sensor module is used to obtain the position information of the positioning nail, the signal transmitting module is used to send the position information obtained by the sensor module to the signal receiver, and the signal receiver is used to receive the position information and measure the position and angle of the pipe following drill bit according to the position information.

2. The device for accurately measuring the position of a borehole drill pipe according to claim 1, characterized in that: The positioning nail launching hole is perpendicular to the positioning nail launching chamber, and the positioning nail launcher launches the positioning nail along the positioning nail launching hole in a direction perpendicular to the positioning nail launching chamber.

3. The device for accurately measuring the position of a borehole drill pipe according to claim 1, characterized in that: A thrust block is also provided in the upper sleeve, and the thrust block is used to limit the sliding distance of the driving motor.

4. A device for accurately measuring the position of a borehole drill pipe according to claim 3, characterized in that: An upper shock-absorbing spring is also arranged in the upper sleeve, a lower shock-absorbing spring is arranged in the anti-wear sleeve, the upper shock-absorbing spring is sleeved outside the driving motor, and the lower shock-absorbing spring is sleeved outside the position nail launching chamber.

5. The device for accurately measuring the position of a borehole drill pipe according to claim 3, characterized in that: The drill rod is a cable drill rod, a cable connector is arranged in the upper casing, and the cable connector is connected to the drive motor.

6. The device for accurately measuring the position of a borehole drill pipe according to claim 1, characterized in that: There are multiple nail launching holes, and the multiple nail launching holes are relatively arranged on the nail launching bin up and down.

7. A method for accurately measuring the position of a drill pipe at a hole, characterized in that: The method uses a device for accurately measuring the position of a borehole drill pipe as described in any one of claims 1 to 6, and the method comprises the following steps: S1: Connect the pipe drill bit to the lower end of the drill pipe, and connect the upper end of the drill pipe to the drilling rig; S2: The drilling rig drives the drill pipe and the pipe drill bit to rotate, and the pipe drill bit drills into the formation; S3: After reaching the predetermined depth, the driving motor drives the nail launching chamber to rotate, so that the lower rotating connecting bayonet on the anti-wear sleeve and the lower rotating connecting bayonet on the upper casing are disengaged; S4: The drilling rig lifts the drill pipe, and the anti-wear sleeve moves downward relative to the upper casing under the action of gravity, thereby exposing the positioning nail launching chamber; the positioning nail launcher launches the positioning nail, and the positioning nail is embedded in the side wall of the well body; the positioning nail obtains its position information and sends it to the signal receiver, and the signal receiver obtains the position information to calculate the position and angle of the following drill bit.

8. A method for accurately measuring the position of a borehole drill pipe according to claim 7, characterized in that: The method further comprises the steps of: S5: The drilling rig presses down the drill rod, so that the lower rotating connection bayonet on the anti-wear sleeve and the lower rotating connection bayonet on the upper casing are closed, and the driving motor drives the position nail launching chamber to reset, so that the lower rotating connection bayonet and the upper rotating connection bayonet are engaged, and the drilling rig drives the drill rod to rotate and continue drilling; S6: Repeat the above steps S3-S5, so that a nail is driven into the well wall at intervals, thereby obtaining a drilling trajectory of the pipe-following drill bit.

9. A method for accurately measuring the position of a borehole drill pipe according to claim 7, characterized in that: The method further comprises the steps of: An inclination gyroscope and a sonar rangefinder are provided in the positioning pin; a locator is provided in the signal receiver, and the process in step S4 by which the signal receiver calculates the position and angle of the follow-up drill bit is as follows: the positioning pin measures the sonar rangefinder sonar sensor to transmit sound waves to the locator on the ground, and measures the distance from the positioning pin to the locator; the inclination sensor measures the inclination angle of the positioning pin, and the signal receiver obtains the vertical distance of drilling through trigonometric relationship and integration method, and then determines the direction of the positioning pin from the ground locator by converting the side length and angle of the trigonometric relationship.

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