A well logging device, integrated probe and control method thereof for horizontal well logging

Abstract

The embodiment of the present invention provides a logging device, an integrated probe and a control method thereof for horizontal well logging. The horizontal well logging device includes a transmission part and an integrated probe, and the transmission part is fixedly connected to the integrated probe; the integrated probe includes a detection part and a fitting control part, and the detection part is fixedly connected to the fitting control part; the fitting control part includes a body, a driving device, a control unit and a gravity sensing unit; the gravity sensing unit can detect the deflection angle of the integrated probe relative to gravity, and the control unit will control the driving device to drive the integrated probe to rotate to achieve the effect of adjusting the fitting angle. The horizontal well logging device of the present application uses gravity sensing to detect the deflection angle of the integrated probe relative to the gravity direction, and can rotate the integrated probe to a preset state, thereby ensuring that the detection sensor in the detection part remains in contact with the well wall.

Description

Technical Field

[0001] The present invention relates to the technical field of horizontal well logging, and in particular to a well logging device, an integrated probe and a control method thereof for horizontal well logging. Background Art

[0002] Horizontal well logging is also called "horizontal well logging", "horizontal hole logging" or "horizontal borehole logging". In the process of underground engineering construction such as oil field development or tunnel excavation, in order to fully understand the formation rock and structural characteristics, it is usually necessary to carry out horizontal drilling work and horizontal well logging operations. Horizontal well logging mainly relies on the drilling tool to drive the logging probe to implement measurements in the well. The logging probe has a variety of sensors built in. Different types of probes have different sensors, and each sensor has a specific detection direction. During the logging operation, due to the limitations of the logging equipment and the materials of the equipment itself, the effect of gravity will cause the logging equipment to have an eccentric phenomenon of the probe deviating to the bottom. During the long-distance pushing process, the logging probe may cause uncontrollable deflection in the well, resulting in the failure to ensure the fit between the probe sensor and the medium (hole wall), resulting in abnormal test data.

[0003] The existing solutions mainly use stabilizers to make the logging equipment as close to the well wall as possible to reduce the occurrence of data anomalies, or use software processing methods to correct the test data later, but neither can control or guarantee the angle between the probe sensor and the medium (hole wall), so stable and correct signal data cannot be directly obtained.

[0004] Therefore, a new technical solution is needed to solve the above problems. Summary of the invention

[0005] In view of this, an embodiment of the present application provides a logging device for horizontal well logging, an integrated probe and a control method thereof that facilitates controlling the fit between a detection sensor and a well wall.

[0006] To achieve the above-mentioned purpose, an embodiment of the present application hopes to provide an integrated probe for horizontal well logging, including a detection part and a fitting control part; the detection part is configured with a detection sensor, and the detection sensor has a first installation position; the fitting control part includes a main body, a driving device, a control unit and a gravity sensing unit, the main body is fixedly connected to the detection part, the integrated probe has a rotation axis extending along the extension direction of the horizontal well, and the driving device can drive the integrated probe to rotate around the rotation axis; the gravity sensing unit has a second installation position, the second installation position has a first preset angle with the gravity direction, and the first installation position and the second installation position are relatively stationary; the gravity sensing unit is fixedly arranged inside the fitting control part, and is used to detect the deflection angle of the second installation position relative to the gravity direction. When the deflection angle is different from the first preset angle, the control unit is used to control the driving device to drive the integrated probe to rotate according to the deviation angle between the deflection angle and the first preset angle until the deflection angle is the same as the first preset angle.

[0007] Furthermore, the first preset angle is -10° to 10°, the first installation position has a second preset angle with the gravity direction, and the second preset angle is -10° to 10°.

[0008] Furthermore, the first preset angle is 0; and / or the second preset angle is 0.

[0009] Furthermore, the gravity sensing unit is a gravity sensor or a gyroscope.

[0010] Furthermore, the body is cylindrical and rotationally symmetrical about the rotation axis.

[0011] Furthermore, the transition connection between the main body and the detection part is smooth.

[0012] Furthermore, the driving device is a motor, and the motor includes a motor shaft and a power part. The power part is fixedly arranged in the body, and the motor shaft extends from a side of the body away from the detection part.

[0013] Another aspect of an embodiment of the present application provides a logging device, comprising a transmission part and any one of the above-mentioned integrated probes, wherein the integrated probe is detachably connected to the transmission part via the driving device, the transmission part can drive the fitting control part and the detection part to feed or retract, and the driving device can drive the detection part and the fitting control part to rotate relative to the transmission part.

[0014] Furthermore, the driving device is a motor, which includes a motor shaft and a power unit. The power unit is fixedly arranged in the main body, and the motor shaft of the driving device extends from the side of the main body away from the detection unit. The driving device is connected to the transmission unit through the motor shaft, and the power unit can rotate relative to the motor shaft to drive the fitting control unit and the detection unit to rotate synchronously.

[0015] Another aspect of an embodiment of the present application provides a control method for an integrated probe, which is applied to any of the above-mentioned integrated probes, including: the integrated probe detects the deflection angle of the first installation position relative to the gravity direction; when the deflection angle is different from the first preset angle, the integrated probe controls the driving device to drive the integrated probe to rotate according to the deviation angle between the deflection angle and the first preset angle until the deflection angle is the same as the first preset angle.

[0016] Furthermore, the first preset angle is 0; and / or the first installation position has a second preset angle with the gravity direction, and the second preset angle is 0.

[0017] An embodiment of the present application provides a logging device, an integrated probe and a control method thereof for horizontal well logging. When the logging device is performing horizontal well logging operations, if the logging device or the integrated probe produces uncontrollable deflection, the gravity sensing unit of the integrated probe can detect the deflection angle of the second installation position relative to the gravity direction and provide the deflection angle information to the control unit. The control unit determines whether the deflection angle information is different from the first preset angle. If different, the control unit controls the driving device to drive the main body to rotate a certain angle, so that the integrated probe rotates to a state where the deflection angle is the same as the first preset angle, thereby ensuring that the detection sensor in the detection part remains in contact with the well wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a well logging device according to an embodiment of the present application;

[0019] Figure 2 A simplified schematic diagram of a cross section of an integrated probe according to an embodiment of the present application located in a horizontal well;

[0020] Figure 3 A simplified schematic diagram of a cross section of an integrated probe according to an embodiment of the present application located in a horizontal well;

[0021] Figure 4 This is a flow chart of the control method of the integrated probe according to an embodiment of the present application.

[0022] Description of Reference Numerals

[0023] Transmission unit 1; Lamination control unit 2; Body 201; Driving device 202; Motor shaft 2021; Power unit 2022; Data line 203; Control unit 204; Gravity sensing unit 205; Detection unit 3; Detection sensor 301 DETAILED DESCRIPTION

[0024] The specific implementation methods of the present application will be described below in conjunction with the drawings of the present application. Obviously, the specific implementation methods described are only some embodiments. Based on the implementation methods of the present application, other embodiments obtained by ordinary technicians in this field without making any creative work are all within the protection scope of the present application.

[0025] The present application embodiment provides an integrated probe for horizontal well logging, see Figure 1 , including a detection part 3 and a fitting control part 2; the detection part 3 is provided with a detection sensor 301, and the detection sensor 301 has a first installation position; the fitting control part 2 includes a main body 201, a driving device 202, a control unit 204 and a gravity sensing unit 205, the main body 201 is fixedly connected to the detection part 3, the integrated probe has a rotation axis extending along the extension direction of the horizontal well, and the driving device 202 can drive the integrated probe to rotate around the rotation axis; the gravity sensing unit 205 has a second installation position, the second installation position has a first preset angle with the gravity direction, and the first installation position and the second installation position are relatively stationary; the gravity sensing unit 205 is fixedly arranged inside the fitting control part 2, and is used to detect the deflection angle of the second installation position relative to the gravity direction. When the deflection angle is different from the first preset angle, the control unit 204 is used to control the driving device 202 to drive the integrated probe to rotate according to the deviation angle between the deflection angle and the first preset angle until the deflection angle is the same as the first preset angle.

[0026] The integrated probe of the embodiment of the present application has a preset calibration of the relative installation positions of the detection sensor 301 and the gravity sensing unit 205. Therefore, it is only necessary to detect the angle of the gravity sensing unit 205 relative to the gravity direction to obtain the angle of the detection sensor 301 relative to the gravity direction. By driving the main body 201 through the driving device 202, the main body 201 and the detection part 3 can be driven to rotate synchronously.

[0027] Specifically, the integrated probe is extended into the horizontal well. Before the integrated probe starts logging, the position of the integrated probe relative to the horizontal well wall is adjusted. When the deflection angle detected by the gravity sensing unit 205 is the first preset angle, it means that the position of the integrated probe relative to the horizontal well wall is at the target position. That is, the first preset angle corresponds to the angle with the gravity direction when the integrated probe is at the target position of the horizontal well wall. For example, when it is necessary to keep the detection sensor 301 close to the bottom wall of the horizontal well, the first preset angle can be set to zero. Then the logging operation can be started. Due to the effect of gravity and friction with the well wall, the integrated probe may produce uncontrollable deflection during the feeding process, resulting in poor fit between the probe sensor and the well wall. When the integrated probe is deflected, the angle between the second installation position and the direction of gravity will change. The gravity sensing unit 205 can detect the deflection of the second installation position relative to the direction of gravity and provide the deflection information to the control unit 204. The control unit 204 determines whether the deflection information is different from the first preset angle. If different, the drive device 202 is controlled to drive the main body 201 to rotate a certain angle, so that the integrated probe is rotated to a state where the deflection angle is the same as the first preset angle, thereby ensuring that the detection sensor 301 in the detection part 3 remains in contact with the well wall.

[0028] Specifically, this embodiment defines that the direction of the integrated probe rotating clockwise around the rotation axis relative to the first preset angle is positive, and the direction of the integrated probe rotating counterclockwise is negative. Figure 2 As shown, the rotation axis is simplified to point O, the direction perpendicular to the paper surface is the feeding direction, the arrow is the first installation position of the gravity sensing unit 205, the axis a-a' is the gravity direction, and taking the first preset angle as 0 as an example, the integrated probe rotates clockwise by an angle of α, then the value of α is positive; Figure 3 As shown in FIG. 1 , if the integrated probe is rotated by an angle β in a counterclockwise direction, the value β is negative.

[0029] In the embodiment of the present application, the first preset angle is -10° to 10°, and the first installation position has a second preset angle with the direction of gravity, and the second preset angle is -10° to 10°. Since the outer surface of the detection part 3 has a certain contact area with the bottom of the well wall during the actual operation, the first preset angle and the second preset angle are limited to a certain range, which can also ensure that the detection sensor 301 has a good fit with the bottom of the well wall. Furthermore, the first preset angle is 0 and / or the second preset angle is 0, so that the sensing direction of the gravity sensing unit 205 can always be referenced to the direction of gravity, so that the control target of the integrated probe is to keep the detection sensor 301 vertically downward.

[0030] In the embodiment of the present application, the gravity sensing unit 205 is a gravity sensor or a gyroscope, or may be other devices that can sense deflection angles, and can detect the deflection angle of the second installation position relative to the gravity direction in real time.

[0031] In the embodiments of this application, please refer to Figure 1 The body 201 is cylindrical and rotationally symmetrical about the rotation axis, so that the body 201 can rotate normally without being affected by the well environment as much as possible. Furthermore, the transition between the body 201 and the detection part 3 is smooth, which reduces the possibility of the probe being stuck by debris in the well during the insertion or retraction process.

[0032] It is understandable that the main body 201 and the detection unit 3 may also be designed as an integral structure.

[0033] In the embodiments of this application, please refer to Figure 1 The driving device 202 is a motor, and the motor includes a motor shaft 2021 and a power unit 2022. The motor shaft 2021 extends from the side of the body 201 away from the detection unit 3. The driving device 202 can drive the integrated probe to rotate around the rotation axis in the extension direction of the horizontal well. The power unit 2022 of the driving device 202 is installed integrally with the body 201, and the motor shaft 2021 extends away from the side of the detection unit 3 to connect to the transmission unit that provides feeding or recovery power to the integrated probe; the driving device 202 drives the integrated probe to rotate by driving the power unit 2022 to rotate around the motor shaft 2021, thereby driving the body 201 and the detection unit 3 to rotate synchronously. It can be understood that the driving device 202 can also be other devices or equipment that can drive the body 201 to rotate, and in this case, the motor shaft 2021 can be called a transmission shaft.

[0034] In the embodiment of the present application, the control unit 204 is connected to the driving device 202 and the gravity sensing unit 205 respectively through the data line 203. The control unit 204 can be a controller or chip such as a PLC or CPU, and is written with a corresponding control program to normally process the deflection angle information and control the rotation of the driving device 202.

[0035] The present application also provides a horizontal well logging device. Figure 1 , including a conveying part and the above-mentioned integrated probe, the integrated probe is detachably connected to the conveying part through a driving device 202, the extension or retraction of the conveying part can drive the feeding or recovery of the integrated probe, and the driving device 202 can drive the integrated probe to rotate relative to the conveying part.

[0036] Specifically, during horizontal well logging operations, the transmission part is connected to the integrated probe to form the logging device. The integrated probe is extended into the horizontal well due to the extension of the transmission part. Affected by gravity and the friction of the well wall, if the integrated probe produces uncontrollable deflection resulting in poor fit between the probe sensor and the well wall, the drive device 202 controls the integrated probe to rotate and adjust to ensure the fit between the probe sensor and the well wall.

[0037] After the logging operation is completed, the transmission unit 1 is retracted from the well, and the integrated probe is detached from the transmission unit 1 .

[0038] The integrated probe of the embodiment of the present application is modularly designed. When it is needed, the driving device 202 of the integrated probe can be connected to the transmission part; after use, the connection between the driving device 202 and the transmission part can be disassembled. Therefore, the connection between the driving device 202 and the transmission part needs to be easy to disassemble and assemble.

[0039] In the case where the driving device 202 is a motor, one of the power unit 2022 and the motor shaft 2021 may be connected to the transmission unit. Specifically, when the power unit 2022 is connected to the driving device 202, that is, the power unit 2022 is tightly connected to the driving device 202, the motor shaft 2021 is tightly connected to the body 201, and the motor shaft 2021 and the power unit 2022 rotate relative to each other, so that the body 201 drives the detection unit 3 to rotate synchronously relative to the power unit 2022. In the embodiment of the present application, the power unit 2022 is tightly connected to the body 201, and the motor shaft 2021 extends from the side of the body 201 away from the detection unit 3. In this way, when the integrated probe is not needed, the power unit 2022 is supported by the body 201, and the motor shaft 2021 is basically not subjected to other forces except its own gravity, so that the force condition of the motor can be greatly improved; furthermore, the overall size of the motor shaft 2021 is small, which can facilitate the connection of the electrode shaft and the transmission unit, and the space requirement for the installation position of the connection is small.

[0040] The embodiment of the present application further provides a control method for any of the above-mentioned integrated probes, wherein the gravity sensing unit 205 detects the deviation angle of the integrated probe, and controls the driving unit through the control unit 204 to drive the integrated probe to rotate a corresponding angle.

[0041] See also Figure 4 , which is a schematic diagram of a control method for an integrated probe provided in an embodiment of the present application. In a specific scenario, the integrated probe body 201 is deflected during the detection process, and its posture needs to be adjusted to control the detection direction to meet the requirements of fitting. The specific control method includes the following steps:

[0042] Step 401: Detect the deflection angle of the first installation position relative to the gravity direction.

[0043] When the integrated probe is deflected, the gravity sensing unit 205 will detect the current deflection angle between the second installation position and the gravity direction, and transmit the result to the control unit 204. It can be understood that the theoretical range of the deflection angle is -180° to 180°. In other embodiments, the clockwise rotation direction of the integrated probe around the rotation axis can also be defined as negative, and the counterclockwise rotation direction can be defined as positive.

[0044] Step 402: When the deflection angle is different from the first preset angle, the driving device 202 is controlled according to the deviation angle between the deflection angle and the first preset angle to drive the integrated probe to rotate until the deflection angle is the same as the first preset angle.

[0045] Specifically, the control unit 204 determines whether the deflection angle is different from the first preset angle through an internal program. If different, the deviation angle value between the deflection angle and the first preset angle is calculated. The control unit 204 will control the rotation of the motor of the driving device 202 to the same angle according to the angle difference between the deflection angle and the first preset angle. Since the motor shaft 2021 is fastened to the transmission part, the power unit 2022 will rotate in the opposite direction by a corresponding angle, thereby driving the integrated probe to return to a state where the deflection angle is the same as the first preset angle; for example, the deflection angle received by the control unit 204 is -14°, and the first preset angle in the program is 0°, then the value of the deviation angle is -14°-0°=-14°, and the control unit 204 will control the driving device 202 to drive the integrated probe to rotate 14° in the clockwise direction. At this time, the deflection angle detected by the sensing unit will be 0°, returning to the same state as the first preset angle;

[0046] If the control unit 204 determines through an internal program that the deflection angle is the same as the first preset angle, no action is taken.

[0047] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A logging device for horizontal well logging, characterized in that: It comprises a transmission part (1) and an integrated probe, wherein the integrated probe comprises: A detection part (3), the detection part (3) being provided with a detection sensor (301), the detection sensor (301) having a first installation position; A lamination control unit (2), the lamination control unit (2) comprising a body (201), a driving device (202), a control unit (204) and a gravity sensing unit (205), the body (201) being fixedly connected to the detection unit (3), the integrated probe having a rotation axis extending along the extension direction of the horizontal well, and the driving device (202) being capable of driving the integrated probe to rotate around the rotation axis; The gravity sensing unit (205) has a second installation position, the second installation position has a first preset angle with the gravity direction, and the first installation position and the second installation position are relatively stationary; The gravity sensing unit (205) is fixedly arranged inside the fitting control part (2) and is used to detect the deflection angle of the second installation position relative to the gravity direction. When the deflection angle is different from the first preset angle, the control unit (204) is used to control the driving device (202) to drive the integrated probe to rotate according to the deviation angle between the deflection angle and the first preset angle until the deflection angle is the same as the first preset angle; The integrated probe is detachably connected to the conveying part (1) via the driving device (202); the conveying part (1) can drive the laminating control part (2) and the detecting part (3) to feed or retract; and the driving device (202) can drive the detecting part (3) and the laminating control part (2) to rotate relative to the conveying part (1); The driving device (202) is a motor, comprising a motor shaft (2021) and a power unit (2022); the power unit (2022) is fixedly arranged in the body (201); the motor shaft (2021) of the driving device (202) extends from a side of the body (201) away from the detection unit (3); the driving device (202) is connected to the transmission unit (1) via the motor shaft (2021); the power unit (2022) can rotate relative to the motor shaft (2021) to drive the fitting control unit (2) and the detection unit (3) to rotate synchronously; The control unit (204) is respectively connected to the power unit (2022) of the driving device (202) and the gravity sensing unit (205) via a data line (203).

2. The well logging device according to claim 1, characterized in that: The first preset angle is between -10° and 10°, the first installation position has a second preset angle with the gravity direction, and the second preset angle is between -10° and 10°.

3. The logging device according to claim 2, characterized in that: The first preset angle is 0; and / or the second preset angle is 0.

4. The well logging device according to claim 1, characterized in that: The gravity sensing unit (205) is a gravity sensor or a gyroscope.

5. The well logging device according to claim 1, characterized in that: The body (201) is cylindrical and rotationally symmetrical about the rotation axis.

6. The well logging device according to claim 1, characterized in that: The transition connection between the main body (201) and the detection part (3) is smooth.

7. A control method for an integrated probe, applied to the integrated probe in the well logging device according to claim 1, characterized in that: The steps include: Detecting the deflection angle of the first installation position relative to the gravity direction; When the deflection angle is different from the first preset angle, the driving device is controlled according to the deviation angle between the deflection angle and the first preset angle to drive the integrated probe to rotate until the deflection angle is the same as the first preset angle.

8. The control method according to claim 7, characterized in that: The first preset angle is 0; and / or, the first installation position has a second preset angle with the gravity direction, and the second preset angle is 0.

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