CN113670180A - Oil and gas well casing pipe distance measuring equipment and distance measuring method thereof - Google Patents
Oil and gas well casing pipe distance measuring equipment and distance measuring method thereof Download PDFInfo
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- CN113670180A CN113670180A CN202110771290.XA CN202110771290A CN113670180A CN 113670180 A CN113670180 A CN 113670180A CN 202110771290 A CN202110771290 A CN 202110771290A CN 113670180 A CN113670180 A CN 113670180A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
Abstract
The invention provides a distance measuring device for a casing of an oil and gas well, which comprises: a non-magnetic body; nonmagnetic extension nipple joint, power module, power management module, data acquisition module and signal transmission module, a plurality of electromagnetic ranging units, every the electromagnetic ranging unit include the electromagnetic ranging probe, with the torque measurement subassembly that the electromagnetic ranging probe is connected, electromagnetic ranging probe circular telegram back, adjacent oil gas well casing pipe makes the moment of torsion that the electromagnetic ranging probe produced, the torque measurement subassembly is used for measuring the moment of torsion. This scheme is through power module, to the power supply of the electromagnetic distance measuring probe of different positions for electromagnetic distance measuring probe circular telegram back, produce mutual appeal with neighbouring oil gas well sleeve pipe, the moment of torsion that the electromagnetic distance measuring probe received is measured to the torque measurement subassembly, can calculate the relative position who obtains adjacent well according to measured torque information.
Description
Technical Field
The invention relates to the field of oil and gas drilling, in particular to oil and gas well casing pipe distance measuring equipment and a distance measuring method thereof.
Background
Petroleum and other underground mineral resources are widely used in the current society. Due to the rapid development of society, a large amount of resources are consumed, some resources with shallow burial depth are exploited in large quantities, and in order to meet the increasing energy demand, the resources with deep burial depth are exploited more and more.
The depth of drilling of oil and gas wells is getting larger and larger due to deeper resource burial, and the drilling of some complex structures requires the detection while drilling of the distance between the adjacent oil and gas well casings. Currently, there is no device that can directly and effectively detect the location of the casing adjacent to the oil and gas well.
Disclosure of Invention
The invention aims to provide a distance measuring device and a distance measuring method for an oil and gas well casing, which aim to solve the problem of detection of the position of the adjacent oil and gas well casing.
The invention provides a distance measuring device for a casing of an oil and gas well, which comprises:
a non-magnetic body;
the non-magnetic extension short section is connected with the non-magnetic body;
the power supply module is arranged on the nonmagnetic extension short section;
the power management module, the data acquisition module and the signal transmission module are respectively connected with the power supply module;
the device comprises N electromagnetic ranging units, wherein each electromagnetic ranging unit comprises an electromagnetic ranging probe and a torque measuring assembly connected with the electromagnetic ranging probe, and N is an integer greater than 2;
the nonmagnetic protective cover is arranged on the outer side of the nonmagnetic body;
the height or/azimuth angle of each electromagnetic ranging unit on the nonmagnetic body is different;
each torque measuring assembly is arranged in the non-magnetic body and is connected with the power management module, the data acquisition module and the signal transmission module; after the electromagnetic distance measuring probe is electrified, the adjacent oil and gas well casing pipe enables the electromagnetic distance measuring probe to generate torque, and the torque measuring assembly is used for measuring the torque and sending measured torque information to the data acquisition module and the signal transmission module.
As a preferred technical scheme, the electromagnetic distance measuring probes are distributed at equal intervals in the circumferential direction of the non-magnetic body to form a detection group.
Preferably, there are at least two detection groups.
As a preferable technical scheme, the interval between two adjacent detection groups is not less than 3 meters.
As a preferred technical scheme, the torque measuring component comprises a torque transmission rod, a torque measuring rod and a strain sensor, the torque measuring rod is fixedly installed in the nonmagnetic body, and the strain sensor is connected with the torque measuring rod;
one end of the torque transmission rod is connected with the electromagnetic distance measuring probe, and the other end of the torque transmission rod is connected with the torque measuring rod.
As a preferred technical scheme, the number of the non-magnetic extension short sections is at least two.
The invention also provides a distance measurement method for the oil-gas well casing, which comprises the following steps:
the power supply module responds to a preset detection instruction and supplies power to at least two electromagnetic ranging units;
each torque measuring assembly respectively acquires torque information of each electromagnetic ranging probe and sends the torque information to a data acquisition module and a signal transmission module;
the data acquisition module and the signal transmission module send the torque information to the processing module, and the processing module acquires position information of an adjacent oil and gas well casing pipe according to the torque information.
The power supply module of this scheme is according to predetermineeing the detection instruction, to the power supply of the electromagnetic ranging probe of different positions on the no magnetic body, and the electromagnetic ranging probe circular telegram back can produce mutual appeal with the sleeve pipe of neighbouring oil gas well, and the moment of torsion that the electromagnetic ranging probe received is measured to the moment of torsion measuring subassembly, because the moment of torsion that the electromagnetic ranging probe of different positions, different azimuths received is different, can calculate the relative position of neighbouring well promptly according to the moment of torsion of measurement. The problem of position detection between the adjacent wells is effectively solved, and the device is simple in structure and low in cost.
As a preferred technical solution, the power supply module supplies power to at least two electromagnetic ranging units in response to a preset detection instruction, and includes:
the processing module receives a control instruction;
according to the control instruction, the processing module searches a preset detection instruction corresponding to the control instruction in a preset instruction comparison table;
the processing module sends a preset detection instruction to the power management module;
and the power management module controls the power supply module to supply power to at least two electromagnetic ranging units.
In the adjacent well detection process, different requirements are often made on the adjacent well detection according to the actual conditions, such as the depth of a drilled well, the type of the drilled well and the like. In general, if a small number of electromagnetic ranging probes or electromagnetic ranging probes with similar positions are used for measurement in a deeper hoistway, the measurement results are occasionally deviated. Therefore, the power supply sequence of the plurality of electromagnetic ranging probes is arranged, so that various preset detection instructions are formed, and an operator can input a control instruction according to actual conditions. The control instructions and the preset detection instructions form an instruction comparison table and are prestored in the processing module, an operator inputs the control instructions to the processing module, the processing module can search the corresponding preset detection instructions in the instruction comparison table according to the control instructions and sends the preset detection instructions to the power management, data acquisition and signal transmission module, and the power management, data acquisition and signal transmission module controls the power supply module to supply power to the electromagnetic ranging probe.
As a preferred technical solution, the preset detection instruction includes a first power supply sequencing instruction, a second power supply sequencing instruction, and a third power supply sequencing instruction;
the first power supply sequencing instruction is that the electromagnetic ranging probes at the same azimuth angle are sequentially powered from bottom to top along the axial direction of the non-magnetic body;
the second power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body;
the third power supply sequencing instruction is to simultaneously supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: through the power supply module, the power is supplied to the electromagnetic distance measuring probes at different positions, so that after the electromagnetic distance measuring probes are electrified, the electromagnetic distance measuring probes generate mutual attraction with the casing pipe of the adjacent well, the torque measuring assembly measures the torque received by the electromagnetic distance measuring probes, and the relative positions of the casing pipes of the adjacent well can be calculated according to the measured torque information because the torques received by the electromagnetic distance measuring probes at different positions and different azimuth angles are different. The problem of position detection between the adjacent wells is effectively solved, and the device is simple in structure and low in cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a distance measuring device according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of a ranging apparatus according to a first embodiment of the present invention;
fig. 3 is a flowchart of a ranging method according to a second embodiment of the present invention.
Icon: 1-drill rod, 2-non-magnetic extension short section, 3-non-magnetic body and 4-electromagnetic distance measuring probe. 5-pressing sheet, 6-bending-resistant cylinder, 7-strain sensor, 8-torque measuring rod and 9-torque transmission rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1 and fig. 2, the present embodiment provides an oil and gas well casing ranging apparatus, including: drilling rod 1, no magnetism body 3, no magnetism extension nipple joint 2, no magnetism protection casing, power module, power management module, data acquisition module and signal transmission module, a plurality of electromagnetism ranging unit.
Wherein, every the electromagnetic distance measuring unit includes an electromagnetic distance measuring probe 4, with a torque measurement subassembly of electromagnetic distance measuring probe 4 connection.
The nonmagnetic protective cover is arranged on the outer side of the nonmagnetic body, the nonmagnetic extension short section is connected with the nonmagnetic body, and the power supply module is arranged on the nonmagnetic extension short section 2; the power supply management module, the data acquisition module and the signal transmission module are connected with the power supply module; the electromagnetic distance measuring probes 4 are exposed out of the nonmagnetic body 3, a nonmagnetic protective cover is arranged outside the nonmagnetic body, each electromagnetic distance measuring probe 4 is connected with the power supply module, and the heights and/or azimuth angles of the electromagnetic distance measuring probes 4 on the nonmagnetic body 3 are different; each torque measurement component is arranged in the non-magnetic body 3 and connected with the power management module, the data acquisition module and the signal transmission module, after the electromagnetic ranging probe 4 is electrified, the torque generated by the electromagnetic ranging probe 4 is enabled to be close to an oil-gas well casing, and the torque measurement component is used for measuring the torque and sending the measured torque information to the data acquisition module and the signal transmission module.
In the above embodiment, the power supply module supplies power to the phase torque measurement component, and supplies power to the electromagnetic distance measurement probe 4 at different positions on the nonmagnetic body 3, and after the electromagnetic distance measurement probe 4 is powered on, the electromagnetic distance measurement probe 4 generates mutual attraction with the adjacent oil and gas well casing, and the torque measurement component can measure the torque received by the electromagnetic distance measurement probe 4, and the torque received by the electromagnetic distance measurement probe 4 is different due to different heights of the electromagnetic distance measurement probe 4 on the nonmagnetic body 3 and/or different azimuth angles of the electromagnetic distance measurement probe 4 and the adjacent oil and gas well casing, so that the relative position of the adjacent well can be calculated according to the measured torque information. The problem of position detection between the adjacent wells is effectively solved, and the device is simple in structure and low in cost.
The height and/or azimuth angle of the electromagnetic ranging probe 4 on the nonmagnetic body 3 are different, including but not limited to the following embodiments.
Firstly, the electromagnetic distance measuring probes 4 are distributed at equal intervals in the circumferential direction of the non-magnetic body 3 to form a detection group. The electromagnetic distance measuring probes 4 on the same circumference are located at the same height, but have different azimuth angles with the adjacent oil and gas well casing, so after the electromagnetic distance measuring probes 4 are electrified, different electromagnetic distance measuring probes 4 can generate different torques for the same adjacent oil and gas well casing, and the relative positions of adjacent wells can be calculated according to the torques.
Secondly, the electromagnetic distance measuring probes 4 are distributed on the circumferential direction of the non-magnetic body 3 at equal intervals to form detection groups, the number of the detection groups is at least two, and 3 detection groups are usually arranged. Because some well bores are not drilled vertically, the problem of whether adjacent well bores are parallel or not needs to be considered, and two or more detection groups are arranged in the embodiment, the detection groups are not positioned on the same circumference, so the heights of the detection groups on the non-magnetic body 3 are different, so that whether the adjacent oil-gas well casing pipes are parallel or not to the well bore of the local side can be analyzed by measuring the torque of the electromagnetic ranging probes 4 in the multiple detection groups, or the included angle between the two well bores according to the current well bore trend can be obtained, and the data can be used as the reference basis of the subsequent construction operation of technicians. In addition, preferably, the interval between the adjacent detection groups is not less than 3 meters. Because the electromagnetic ranging probe 4 generates a magnetic field after being powered on, the magnetic field will cause certain interference with each other, in order to reduce the interference, the detection groups are spaced at a certain distance, and preferably spaced at 3 meters or more through experimental calculation, and the generated interference belongs to a tolerable range for the measurement in the embodiment.
And thirdly, the electromagnetic distance measuring probes 4 are spirally distributed on the non-magnetic body 3, and the spacing distances between the adjacent electromagnetic distance measuring probes 4 are equal. The effect achieved by this distribution mode is similar to the second distribution mode, and is not described here again.
The embodiment also provides an implementation mode of the torque measuring component, the torque measuring component comprises a torque transmission rod 9, a torque measuring rod 8 and a strain sensor 7, the torque measuring rod 8 is fixedly installed in the nonmagnetic body 3, and the strain sensor 7 is connected with the torque measuring rod 8; one end of the torque transmission rod 9 is connected with the electromagnetic distance measuring probe 4, and the other end of the torque transmission rod is connected with the torque measuring rod 8.
In addition, it is worth mentioning that the nonmagnetic body 3 comprises a shell, a pressing sheet 5 arranged in the shell, a bearing connected with the pressing sheet 5, and a bending-resistant cylinder 6 connected with the bearing; the electromagnetic distance measuring probe 4 is mounted on the bending-resistant cylinder 6. The non-magnetic body 3 and the non-magnetic extension short section 2 cannot be magnetized and cannot interfere with the magnetic field of the electromagnetic ranging probe 4. Generally, the non-magnetic body 3 is longer, but the diameter of the non-magnetic body 3 is not large, and in order to prevent the deformation of the electromagnetic ranging probe 4 under a large tensile force, the rigidity of the bending-resistant cylinder 6 is large; the bending-resistant cylinder 6 can rotate freely, so that torque can be transmitted to the torque measuring rod 8 conveniently through the torque transmission rod 9, the two ends of the torque measuring rod 8 are fixed and cannot rotate, and strain of the torque measuring rod 8 is measured through the strain sensor 7.
Specifically, the electromagnetic distance measuring probe 4 is electrified to generate a magnetic field, the magnetic field is mutually attracted with the adjacent casing, and if the direction is not opposite to the straight direction, the electromagnetic distance measuring probe 4 tends to rotate. The electromagnetic distance measuring probe 4 can rotate freely around the bending-resistant cylinder 6, and the acting force of the electromagnetic distance measuring probe can act on the torque measuring rod 8 which is easy to elastically deform through the torque transmission rod 9. The torque measuring rod 8 cannot rotate, but strain is generated when the torque measuring rod is subjected to torsional acting force, and what is needed is torque information when the torque measuring rod 8 is subjected to torsional acting force, and the torque information reflects the stress of the electromagnetic ranging probe 4.
The bending-resistant cylinder mentioned above, due to its high rigidity, is not sufficiently deformed by the force applied to the electromagnetic ranging probe 4. When the electromagnetic distance measuring probe 4 is under the action of axial component force (pulling force), the bending-resistant cylinder 6 is not deformed, and the length of the force arm of the moment acting on the torque measuring rod 8 is kept unchanged.
When the electromagnetic distance measuring probe 4 is subjected to a circumferential component (tangential rotational component), the rotatable bending-resistant cylinder 6 does not hinder the action of this component on the torque measuring rod 8 via the torque transmission rod 9.
As a preferred technical scheme, at least two nonmagnetic extension short sections 2 are provided.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: through power module, to the power supply of the electromagnetic distance measuring probe 4 of different positions for after the electromagnetic distance measuring probe 4 circular telegram, produce mutual appeal with the sleeve pipe of adjacent well, the moment of torsion that the moment of torsion measuring unit measured electromagnetic distance measuring probe 4 received, because the moment of torsion that the electromagnetic distance measuring probe 4 of different positions, different azimuths received is different, can calculate the relative position of adjacent well according to the measured torque information. The problem of position detection between the adjacent wells is effectively solved, and the device is simple in structure and low in cost.
Example two
As shown in fig. 3, the present embodiment provides a method for measuring a distance of a casing of an oil and gas well, including:
step S1, the power supply module responds to a preset detection instruction and supplies power to at least two electromagnetic ranging units;
wherein, step S1 specifically includes:
s101, the processing module receives a control instruction;
s102, according to the control instruction, the processing module searches a preset detection instruction corresponding to the control instruction in a preset instruction comparison table;
s103, the processing module sends a preset detection instruction to the power management module;
s104, the power management module controls the power supply module to supply power to at least two electromagnetic ranging units.
In the adjacent well detection process, different requirements are often made on the adjacent well detection according to the actual conditions, such as the depth of a drilled well, the type of the drilled well and the like. In general, if a small number of electromagnetic ranging probes or electromagnetic ranging probes with similar positions are used for measurement in a deeper hoistway, the measurement results are occasionally deviated. Therefore, in the embodiment, the power supply sequence of the plurality of electromagnetic ranging probes is arranged, the power supply sequence forms a plurality of preset detection instructions, and an operator can input a control instruction according to actual conditions. The control instructions and the preset detection instructions form an instruction comparison table, and the instruction comparison table is prestored in the processing module. An operator inputs a control instruction to a processing module, the processing module can search a corresponding preset detection instruction in an instruction comparison table according to the control instruction and sends the preset detection instruction to a power management, data acquisition and signal transmission module, the power management, data acquisition and signal transmission module controls a power supply module to supply power to an electromagnetic distance measurement probe, the electromagnetic distance measurement probe generates mutual attraction with an adjacent sleeve after being electrified, a torque measurement component measures torque received by the electromagnetic distance measurement probe, the torque information is transmitted to the processing module through the data acquisition module and the transmission module, the processing module can calculate the relative distance of a measured sleeve according to the obtained torque information, the calculation method of the relative distance is the prior art, in brief, an experimental device is designed through a laboratory, a permanent magnet in the device represents the electromagnetic distance measurement probe, and the angle or the position of the permanent magnet and a metal sleeve is changed, and measuring the rotating torque of the permanent magnet so as to obtain a large amount of data, and constructing a distance measurement model formula according to the data, which is not described herein any more.
Step S2, each torque measurement component respectively acquires torque information of each electromagnetic distance measurement probe and sends the torque information to a data acquisition module and a signal transmission module;
and step S3, the data acquisition module and the signal transmission module send the torque information to a processing module, and the processing module acquires position information of the adjacent oil and gas well casing pipe according to the torque information.
It should be noted that there are various embodiments of the preset detection instruction mentioned above, but the preset detection instruction includes, but is not limited to, the following embodiments.
Specifically, the preset detection instruction comprises a first power supply sequencing instruction, a second power supply sequencing instruction and a third power supply sequencing instruction;
the first power supply sequencing instruction is that the electromagnetic ranging probes at the same azimuth angle are sequentially powered from bottom to top along the axial direction of the non-magnetic body;
the second power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body;
the third power supply sequencing instruction is to simultaneously supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body.
The first power supply sequencing command and the second power supply sequencing command are both used for supplying power to only one electromagnetic ranging probe at a time and measuring, and the electromagnetic ranging probe has the advantage of avoiding electromagnetic interference influence among the electromagnetic ranging probes. And the third power supply sequencing instruction simultaneously supplies power to a plurality of electromagnetic ranging probes, but because the electromagnetic ranging probes are positioned on the same circumference and are mostly distributed equidistantly and symmetrically, the electromagnetic interference between the electromagnetic ranging probes can be mutually counteracted, and the influence on the detection of an adjacent well can be ignored.
In addition, it is worth mentioning that the control instruction includes a first execution instruction, a second execution instruction, and a third execution instruction;
the first execution instruction is a preset detection instruction sent by the processing module to the power supply module;
the second execution instruction is that the processing module sequentially sends at least two different preset detection instructions to the power supply module;
and the third execution instruction is that the processing module sequentially sends all preset detection instructions to the power supply module.
The operator can select a proper control instruction according to specific conditions so as to meet the actual drilling requirements, and particularly, under the conditions of deeper drilling, complex drilling structure and the like, the second execution instruction and the third execution instruction can enable the measurement result to be more accurate. The first execution instruction is more suitable for simple adjacent well detection, and time efficiency can be considered, because the detection environment is underground, signal data transmission is limited, and the first execution instruction is small in detected data and convenient to transmit.
In summary, the power supply module of this embodiment supplies power to the electromagnetic ranging probes at different positions according to the preset detection instruction, after the electromagnetic ranging probes are powered on, the electromagnetic ranging probes generate mutual attraction with the casing of the adjacent well, the torque measurement assembly measures the torque received by the electromagnetic ranging probes, and the processing module can calculate the position information of the adjacent well according to the measured torque because the torques received by the electromagnetic ranging probes at different positions and different azimuth angles are different. The problem of position detection between the adjacent wells is effectively solved, and the device is simple in structure and low in cost.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An oil and gas well casing ranging apparatus, comprising:
a non-magnetic body;
the non-magnetic extension short section is connected with the non-magnetic body;
the power supply module is arranged on the nonmagnetic extension short section;
the power management module, the data acquisition module and the signal transmission module are respectively connected with the power supply module;
the device comprises N electromagnetic ranging units, wherein each electromagnetic ranging unit comprises an electromagnetic ranging probe and a torque measuring assembly connected with the electromagnetic ranging probe, and N is an integer greater than 2;
the nonmagnetic protective cover is arranged on the outer side of the nonmagnetic body;
the electromagnetic distance measuring units are arranged on the nonmagnetic body at different heights or/different azimuth angles;
each torque measuring assembly is arranged in the non-magnetic body and is connected with the power management module, the data acquisition module and the signal transmission module;
each electromagnetic distance measuring probe is connected with the torque measuring assembly;
after the electromagnetic distance measuring probe is electrified, the adjacent oil and gas well casing pipe enables the electromagnetic distance measuring probe to generate torque, and the torque measuring assembly is used for measuring the torque and sending measured torque information to the data acquisition module and the signal transmission module.
2. The oil and gas well casing ranging apparatus of claim 1, wherein the electromagnetic ranging probes are equidistantly distributed in a circumferential direction of the nonmagnetic body to form a detection group.
3. The oil and gas well casing ranging apparatus of claim 2 wherein there are at least two of the probe sets.
4. The oil and gas well casing ranging apparatus of claim 3 wherein the spacing between adjacent sets of probes is not less than 3 meters.
5. The oil and gas well casing ranging apparatus of claim 1, wherein the torque measurement assembly comprises a torque transmission rod, a torque measurement rod, a strain sensor, the torque measurement rod is fixedly installed in the nonmagnetic body, and the strain sensor is connected with the torque measurement rod;
one end of the torque transmission rod is connected with the electromagnetic distance measuring probe, and the other end of the torque transmission rod is connected with the torque measuring rod.
6. The oil and gas well casing ranging apparatus of claim 1 wherein at least one of the nonmagnetic extension subs.
7. A method for measuring distance of a casing of an oil and gas well is characterized by comprising the following steps:
the power supply module responds to a preset detection instruction and supplies power to at least two electromagnetic ranging units;
each torque measuring assembly respectively acquires torque information of each electromagnetic ranging probe and sends the torque information to a data acquisition module and a signal transmission module;
the data acquisition module and the signal transmission module send the torque information to the processing module, and the processing module acquires position information of an adjacent oil and gas well casing pipe according to the torque information.
8. The oil and gas well casing ranging method according to claim 7, wherein the power supply module supplies power to at least two electromagnetic ranging units in response to a preset detection command, and comprises:
the processing module receives a control instruction;
according to the control instruction, the processing module searches a preset detection instruction corresponding to the control instruction in a preset instruction comparison table;
the processing module sends a preset detection instruction to the power management module;
and the power management module controls the power supply module to supply power to at least two electromagnetic ranging units.
9. The oil and gas well casing ranging method according to claim 7, wherein the preset detection command comprises a first power supply sequencing command, a second power supply sequencing command and a third power supply sequencing command;
the first power supply sequencing instruction is that the electromagnetic ranging probes at the same azimuth angle are sequentially powered from bottom to top along the axial direction of the non-magnetic body;
the second power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body;
the third power supply sequencing instruction is to simultaneously supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body.
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| CN114000869A (en) * | 2021-11-25 | 2022-02-01 | 四川轻化工大学 | Shaft liquid level detection device and method |
| CN115949388A (en) * | 2023-02-20 | 2023-04-11 | 四川轻化工大学 | Collision-prevention distance-measurement early warning method and measurement unit for casing |
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