CN117514151A - Magnetic positioning method for resisting magnetic interference and drilling device - Google Patents
Magnetic positioning method for resisting magnetic interference and drilling device Download PDFInfo
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- CN117514151A CN117514151A CN202410022805.XA CN202410022805A CN117514151A CN 117514151 A CN117514151 A CN 117514151A CN 202410022805 A CN202410022805 A CN 202410022805A CN 117514151 A CN117514151 A CN 117514151A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 179
- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 88
- 238000012545 processing Methods 0.000 claims abstract description 38
- 238000012937 correction Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Abstract
The application relates to a magnetic positioning method for resisting magnetic interference and a drilling device, and relates to the technical field of drilling measurement. The method of the application comprises the following steps: s1, initial installation; s2, starting drilling; s3, sending and measuring position information; s4, data processing; s5, position judgment and correction; s6, re-measurement; s7, data calculation. The device of this application includes strong magnetic joint, drill bit, drill collar and probe, strong magnetic joint connects the drill bit with between the drill collar, probe fixed connection is in the target position of target horizontal well, data processing terminal with the probe passes through cable junction, data processing terminal is used for calculating strong magnetic joint's space position coordinate. The method has the function of accurately measuring the distance and azimuth relation of the target point relative to the drill bit in the magnetic interference environment.
Description
Technical Field
The application relates to the technical field of drilling measurement, in particular to a magnetic positioning method for resisting magnetic interference and a drilling device.
Background
Geological resource exploitation is a main supply mode for ensuring the living necessary energy sources of people, and in the geological exploitation process, a target position of an exploration drilling tool is usually required to be positioned by means of magnetic positioning. The magnetic positioning is to use a strong magnetic joint with known magnetic moment and space posture as a signal source, a probe tube as a signal receiving source and calculate the relative space position relation of the two by analyzing an alternating magnetic field.
At present, the magnetic positioning method is to measure in an environment without magnetic interference, a probe tube for detecting magnetic signals needs to be placed in a target well, an iron sleeve is generally arranged in the target well, and the probe tube needs to pass through the iron sleeve to reach an open hole section. In use, the probe is at least 3 meters away from the iron sleeve and the formation around the probe and between the ferromagnetic joint and the probe cannot contain any ferrous material (including but not limited to various iron ores). Otherwise, the measurement result is inaccurate, and the drill bit cannot be guided to hit the target point.
Such demanding measurement requirements are often not met in an actual field environment. Thereby greatly limiting the use of magnetic positioning techniques in directional communication drilling engineering. If the communication is unsuccessful, the well is filled and the drilling is restarted, which takes time and labor. Multiple drilling can cause engineering accidents such as well wall collapse, drilling burying and the like.
Disclosure of Invention
In order to accurately measure the distance and azimuth relation of a target point relative to a drill bit in a magnetic interference environment, the application provides an anti-magnetic interference magnetic positioning method and a drilling device.
The application provides a magnetic positioning method and drilling device of anti-magnetic interference, adopts following technical scheme:
a magnetic positioning method for resisting magnetic interference and a drilling device, wherein the method comprises the following steps:
s1, initial installation: connecting a strong magnetic joint between the drill bit and the drill collar, wherein the strong magnetic joint is used for outputting magnetic field signals; the method comprises the steps that a probe tube is fixedly connected to the top of a target horizontal well, and the probe tube is used for measuring self-posture and collecting magnetic field signals and outputting the self-posture and the magnetic field signals to a data processing terminal;
s2, starting drilling: drilling a drill bit from the initial horizontal well towards a target point direction of the target horizontal well;
s3, transmitting and measuring position information: after the drill bit drills to a depth set by one person, an operator controls the drill bit to stop drilling, the probe tube collects magnetic field signals sent by the strong magnetic connector, and the self posture and the magnetic field signals are output to the data processing terminal through the cable;
s4, data processing: the data processing terminal analyzes and calculates the magnetic field signal to obtain the space position coordinate of the strong magnetic joint;
s5, position judgment and correction: the operator judges the deviation between the current position of the drill bit and the target spot direction of the target horizontal well, and if the deviation occurs, the position of the drill bit is corrected;
s6, re-determination: the operator controls the drill bit to continuously drill towards the target point direction, the drill bit stops drilling after drilling to a manually set depth, S3 to S5 are repeated, the data processing terminal measures the space position coordinates of the strong magnetic joint, and the operator corrects the position of the drill bit;
s7, data calculation: according to the spatial position relation between the strong magnetic joint and the probe tube, the following formula is obtained:
(1)
(2)
(3)
(4)
(5)
(6)
wherein:
b is the magnetic field intensity of the measuring point;
B x for measuring the component of the point magnetic field strength in the X axis;
B y the component of the magnetic field intensity in the Y axis is used as a measuring point;
B Z the component of the magnetic field intensity in the Z axis is used as a measuring point;
alpha is the deviation angle of the well inclination;
epsilon is the drill bit well bevel angle;
delta is the probe well bevel angle;
beta is the azimuth off angle;
η is the bit orientation;
lambda is the azimuth of the probe;
d is the distance between the strong magnetic joint and the probe;
M 0 is magnetic moment, measured on the ground;
θ is the initial orientation;
h1 is the left-right deviation distance when the drill bit drills to a target point along the current direction;
h2 is the front-back deviation distance when the drill bit drills to a target point along the current direction;
and solving the position information of the strong magnetic joint relative to the probe tube at the measuring point according to the formula.
Through adopting above-mentioned technical scheme, creep into the drill bit to the measuring point position, the probe gathers the magnetic signal that strong magnetic joint sent and measures self gesture (the gyroscope measures the position and does not receive the magnetic interference influence) through the gyroscope, and export magnetic field signal and self gesture to data processing terminal through the cable for operating personnel easily judges strong magnetic joint's spatial position, thereby easily improve probe measuring response speed, and then make operating personnel easily confirm strong magnetic joint at the relative positional information of probe of measuring point position.
When the drill bit drills to different measuring positions, the probe tube analyzes and calculates the received magnetic field signals to obtain the current direction of the drill bit and the deviation angle and the deviation distance (including horizontal and vertical directions) of the connecting line between the probe tube and the drill bit.
Optionally, the data processing terminal is a computer.
Through adopting above-mentioned technical scheme, through setting up data processing terminal as the computer, the computer is after receiving cable transmission's magnetic field signal and probe self gesture, and the computer can be quick and accurate calculate the magnetic field strength of strong magnetic joint position to easily calculate the space position coordinate of strong magnetic joint, and then easily calculate the space position coordinate of drill bit.
Optionally, the probe is an anti-magnetic interference probe.
By adopting the technical scheme, the anti-magnetic interference probe can accurately measure the azimuth of the probe by using the gyroscope in the magnetic interference environment, and the azimuth is an indispensable input condition for calculating the relative position between the drill bit and the probe.
Optionally, in S2, the drill bit is positioned in the well being drilled, the drill bit beginning to drill from the bottom of the original horizontal well.
Through adopting above-mentioned technical scheme, place the drill bit in initial horizontal well bottom for drill bit and anti-magnetic interference probe produce the distance, thereby make the drill bit be convenient for creep into towards the target horizontal well, and then make anti-magnetic interference probe easily measure and fix a position strong magnetic joint.
Optionally, the drill bit has a well angle in the range of 0 ° to 180 ° while traveling.
Through adopting above-mentioned technical scheme, through setting up the well oblique angle, the magnetic field signal of strong magnetic joint is gathered to the probe, and measures self well oblique angle to be convenient for data processing terminal calculates the well oblique deviation angle and the offset of drill bit, and then makes operating personnel easily confirm the spatial position of drill bit.
Optionally, the drill bit has an azimuth angle during travel, the azimuth angle ranging from 0 ° to 360 °.
Through adopting above-mentioned technical scheme, through setting up the azimuth, the magnetic field signal of strong magnetic joint is gathered to the probe, and measures self azimuth to be convenient for data processing terminal calculates the position departure angle and the offset of drill bit, and then makes operating personnel easily further confirm the spatial position of drill bit.
Optionally, a drilling device includes strong magnetic joint, drill bit, drill collar and probe, and strong magnetic joint connects between drill bit and drill collar, and probe fixed connection is in the target position of target horizontal well, and data processing terminal passes through cable connection with the probe, and data processing terminal is used for calculating strong magnetic joint's space position coordinate.
Through adopting above-mentioned technical scheme, strong magnetic joint connects between drill bit and drill collar, and the drill bit drives strong magnetic joint and drills towards the target direction for the probe easily gathers strong magnetic joint's magnetic field signal, through measuring strong magnetic joint's position coordinate, thereby makes the data processing terminal easily calculate the spatial position coordinate of drill bit, and then makes operating personnel easily correct the position of drill bit.
In summary, the present application includes at least one of the following beneficial technical effects:
the space position coordinates of the strong magnetic joint are easy to calculate by operators through calculating the position deviation angle and the well deviation angle and the distance between the strong magnetic joint and the probe;
by measuring the posture of the drill bit, under the condition that the azimuth angle and the well inclination angle of the drill bit are known in the effective distance measurement, the probe tube is convenient to collect magnetic field signals sent by the strong magnetic connector, the azimuth angle and the well inclination angle of the probe tube are convenient to transmit to the data processing terminal, and the data processing terminal is further convenient to calculate the distance and the azimuth relation of a target point relative to the drill bit;
through setting up strong magnetic joint and anti-magnetic interference probe, make anti-magnetic interference probe easy to carry out accurate measurement to strong magnetic joint, thereby make the space position coordinate of easy to confirm the drill bit of operating personnel, and then make the operating personnel easily carry out the position correction to the drill bit;
through setting up anti-magnetic interference probe for under the magnetic interference environment, anti-magnetic interference probe can be accurately measured and the position of probe itself is obtained, thereby calculates accurate result.
Drawings
FIG. 1 is an elevation view intended to illustrate a drilling apparatus;
fig. 2 is a top view intended to illustrate a drilling apparatus.
Reference numerals illustrate:
1. a strong magnetic joint; 2. a drill bit; 3. a drill collar; 4. a probe tube.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-2.
In one aspect, an embodiment of the present application discloses a magnetic positioning method for magnetic interference resistance. Referring to fig. 1 and 2, a magnetic positioning method of magnetic disturbance resistance includes the steps of:
s1, initial installation: the strong magnetic connector 1 is fixedly connected between the drill bit 2 and the drill collar 3, the strong magnetic connector 1 is used for outputting magnetic field signals, in the embodiment, the strong magnetic connector 1 is preferably a strong magnetic connector, the strong magnetic connector can provide a stable magnetic field, and in other embodiments, the strong magnetic connector 1 also adopts an electromagnet, and the electromagnet has the property of easily adjusting the magnetic field intensity.
The probe tube 4 is fixedly connected to the top of the horizontal well far away from the strong magnetic connector 1, and the probe tube 4 is used for measuring self-posture and collecting magnetic field signals and outputting the self-posture and the magnetic field signals to the data processing terminal; the probe tube 4 is preferably an anti-magnetic interference probe tube, and the anti-magnetic interference probe tube has anti-magnetic interference performance in a magnetic interference environment; in this embodiment, the data processing terminal is preferably a computer, and the computer has accurate performance.
The strong magnetic joint 1 is positioned in the well drilling, the strong magnetic joint 1 is positioned at one side close to the initial horizontal well, and the probe 4 is fixedly connected to the top of the target horizontal well.
S2, starting drilling: the drill bit 2 drills from the bottom of the initial horizontal well towards the target point direction of the target horizontal well, and the drill bit 2 has a well inclination angle (the well inclination angle refers to the included angle between the tangent line of a point on the track and the gravity line) and an azimuth angle (the azimuth angle refers to the included angle between the projection of the tangent line of the point on the track on the horizontal plane and the north direction line) when travelling.
S3, transmitting and measuring position information: after the drill bit 2 drills to a depth set by one person, an operator controls the drill bit 2 to stop drilling, and the probe 4 collects magnetic field signals emitted by the strong magnetic connector 1 to obtain a component B of the magnetic field intensity of the measuring point on the X axis X Component By of the magnetic field strength of the measuring point in the Y axis and component B of the magnetic field strength of the measuring point in the Z axis Z 。
The gyroscope in the probe 4 measures the well inclination and the azimuth of the probe 4 to obtain the probe well inclination delta and the probe azimuth lambda, and the self-posture well is output through the cableOblique angle delta and azimuth lambda and component B of magnetic field intensity of measuring point in X axis X Component By of the magnetic field strength of the measuring point in the Y axis and component B of the magnetic field strength of the measuring point in the Z axis Z To the data processing terminal.
S4, data processing: component B of magnetic field intensity of measuring point on X axis by data processing terminal X Component By of the magnetic field strength of the measuring point in the Y axis and component B of the magnetic field strength of the measuring point in the Z axis Z And (3) analyzing and calculating to obtain the magnetic field intensity B, the well deviation angle alpha and the azimuth deviation angle beta of the measuring point, thereby obtaining the space position coordinates of the strong magnetic connector 1.
S5, position judgment and correction: the operator judges the deviation between the current position of the drill bit 2 and the target direction of the target horizontal well, and if the deviation occurs, the position of the drill bit 2 is corrected by adjusting the screw on the drill bit 2.
S6, re-determination: the operator controls the drill bit 2 to continuously drill towards the target point direction, after the drill bit 2 drills to the artificially set depth, the drilling is stopped, S3 to S5 are repeated, the data processing terminal measures the coordinates of the strong magnetic connector 1, and the operator corrects the position of the drill bit 2.
S7, data calculation: according to the spatial position relation between the strong magnetic joint 1 and the probe 4, the following formula is obtained:
(1)
(2)
(3)
(4)
(5)
(6)
wherein:
b is the magnetic field intensity of the measuring point;
B x for measuring the component of the point magnetic field strength in the X axis;
B y the component of the magnetic field intensity in the Y axis is used as a measuring point;
B Z the component of the magnetic field intensity in the Z axis is used as a measuring point;
alpha is the deviation angle of the well inclination;
epsilon is the drill bit well bevel angle;
delta is the probe well bevel angle;
beta is the azimuth off angle;
η is the bit orientation;
lambda is the azimuth of the probe;
d is the distance between the strong magnetic joint 1 and the probe 4;
M 0 is magnetic moment, measured on the ground;
θ is the initial orientation;
h1 is the left-right offset distance when the drill bit 2 drills to a target point along the current direction;
h2 is the front-back deviation distance when the drill bit 2 drills to a target point along the current direction;
and solving the position information of the ferromagnetic joint 1 at the position of the measuring point relative to the probe tube 4 according to the formula.
During the use, creep into drill bit 2 to the measuring point position, operating personnel control drill bit 2 stops to creep into, and the magnetic field signal that strong magnetic coupling 1 sent is gathered to probe 4, and measures self gesture, and probe 4 passes through cable output magnetic field signal and self gesture to data processing terminal for probe 4 easily measures strong magnetic coupling 1, thereby easily improves probe 4 measuring response speed, and then makes operating personnel easily confirm the relative positional information of probe 4 in the measuring point position of strong magnetic coupling 1.
The implementation principle of the magnetic positioning method for resisting magnetic interference in the embodiment of the application is as follows: after the drill bit 2 is drilled to the artificially set measuring point position, an operator controls the drill bit 2 to stop drilling, the probe tube 4 collects magnetic field signals emitted by the strong magnetic connector 1, and the self posture is measured through the gyroscope in the environment with magnetic interference (the measuring azimuth of the gyroscope is not interfered by the magnetic field). The probe 4 outputs a magnetic field signal and the self gesture to the data processing terminal through the cable, an operator judges the position of the drill bit 2 according to the measurement result, if the position of the drill bit 2 is deviated, the operator adjusts the direction of the drill bit 2 to continue drilling, so that the probe 4 is easy to measure the strong magnetic connector 1, the response speed of the measurement of the probe 4 is easy to improve, and the operator is easy to determine the position information of the strong magnetic connector 1 relative to the probe 4 at the position of the measurement point.
On the other hand, the embodiment of the application also discloses a drilling device. Referring to fig. 1, a drilling apparatus includes: the device comprises a strong magnetic joint 1, a drill bit 2, a drill collar 3 and a probe tube 4, wherein the strong magnetic joint 1 is fixedly connected between the drill bit 2 and the drill collar 3, the probe tube 4 is fixedly connected to a target point position of a target horizontal well, a data processing terminal is connected with the probe tube 4 through a cable, and the data processing terminal is used for calculating the space position coordinate of the strong magnetic joint 1.
When the magnetic field sensor is used, the strong magnetic connector 1 is fixedly connected to the drill bit 2, the drill bit 2 drives the strong magnetic connector 1 to move, the probe 4 collects magnetic field signals and self gestures of the strong magnetic connector 1 and outputs the magnetic field signals and the self gestures to the data processing terminal, and the data processing terminal analyzes and calculates the magnetic field signals and the self gestures, so that an operator can easily obtain space position coordinates of the strong magnetic connector 1 and further obtain space position coordinates of the drill bit 2.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. A magnetic positioning method for resisting magnetic interference is characterized by comprising the following steps:
s1, initial installation: connecting a strong magnetic joint (1) between a drill bit (2) and a drill collar (3), wherein the strong magnetic joint (1) is used for outputting magnetic field signals; the method comprises the steps that a probe tube (4) is fixedly connected to the top of a target horizontal well, and the probe tube (4) is used for measuring self-posture and collecting magnetic field signals and outputting the self-posture and the magnetic field signals to a data processing terminal;
s2, starting drilling: the drill bit (2) drills from the initial horizontal well towards the target point direction of the target horizontal well;
s3, transmitting and measuring position information: after the drill bit (2) drills to a manually set depth, an operator controls the drill bit (2) to stop drilling, the probe tube (4) collects magnetic field signals sent by the strong magnetic connector (1) and outputs self gestures and the magnetic field signals to the data processing terminal through a cable;
s4, data processing: the data processing terminal analyzes and calculates the magnetic field signal to obtain the space position coordinate of the strong magnetic connector (1);
s5, position judgment and correction: an operator judges the deviation between the current position of the drill bit (2) and the target point direction of the target horizontal well, and if the deviation occurs, the position of the drill bit (2) is corrected;
s6, re-determination: the operator controls the drill bit (2) to continuously drill towards the target point direction, after the drill bit (2) drills to a manually set depth, the drilling is stopped, S3 to S5 are repeated, the data processing terminal measures the space position coordinates of the strong magnetic joint (1), and the operator corrects the position of the drill bit (2);
s7, data calculation: according to the spatial position relation between the strong magnetic joint (1) and the probe tube (4), the following formula is obtained:
(1)
(2)
(3)
(4)
(5)
(6)
wherein:
b is the magnetic field intensity of the measuring point;
B x for measuring the component of the point magnetic field strength in the X axis;
B y the component of the magnetic field intensity in the Y axis is used as a measuring point;
B Z the component of the magnetic field intensity in the Z axis is used as a measuring point;
alpha is the deviation angle of the well inclination;
epsilon is the drill bit well bevel angle;
delta is the well bevel angle of the probe;
beta is the azimuth off angle;
η is the bit orientation;
lambda is the azimuth of the probe;
d is the distance between the strong magnetic joint (1) and the probe tube (4);
M 0 is magnetic moment, measured on the ground;
θ is the initial orientation;
h1 is the left-right deviation distance of the drill bit (2) when the drill bit drills to a target point along the current direction;
h2 is the front-back deviation distance of the drill bit (2) when the drill bit drills to a target point along the current direction;
and solving the position information of the strong magnetic joint (1) relative to the probe tube (4) at the measuring point according to the formula.
2. The method for magnetic positioning against magnetic interference of claim 1, wherein: in S1, the data processing terminal is a computer.
3. The method for magnetic positioning against magnetic interference of claim 1, wherein: in S1, the probe tube (4) is an anti-magnetic interference probe tube.
4. The method for magnetic positioning against magnetic interference of claim 1, wherein: in S2, the drill bit (2) is positioned within the well being drilled and drilling is initiated from the bottom of the initial horizontal well.
5. The method for magnetic positioning against magnetic interference of claim 4, wherein: the drill bit (2) has a well angle in the range of 0 DEG to 180 DEG while traveling.
6. The method for magnetic positioning against magnetic interference of claim 4, wherein: the drill bit (2) has an azimuth angle during travel, the azimuth angle being in the range of 0 DEG to 360 deg.
7. A drilling apparatus for use in a method of magnetic positioning against magnetic interference as claimed in any one of claims 1 to 6, characterized in that: the device comprises a strong magnetic joint (1), a drill bit (2), a drill collar (3) and a probe tube (4), wherein the strong magnetic joint (1) is connected between the drill bit (2) and the drill collar (3), the probe tube (4) is fixedly connected to the target position of a target horizontal well, a data processing terminal is connected with the probe tube (4) through a cable, and the data processing terminal is used for calculating the spatial position coordinates of the strong magnetic joint (1).
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