JP7127207B2 - Signal transmission method and system for rotary guide type oil field drilling tool - Google Patents

Description

The present application relates to the technical field of petroleum drilling, and more particularly to a signal transmission method and system for rotary guide type oil drilling tools.

The rotary guided oilfield drilling tool is an advanced automated oilfield drilling technology that can guide precisely, reduce development costs, and maximize the exploitation of oil and gas resources.

In the prior art, a rotary guide type oilfield drilling tool includes two parts, a non-rotating bushing and a rotating shaft, and the non-rotating bushing and the rotating shaft are connected by upper and lower bearings to form a relatively rotatable structure. forming. Normal for non-rotating bushings, an attitude measurement circuit (used to measure equipment deflection angle, azimuth angle, tool face angle, etc. downhole) and multiple independent hydraulic control circuits (each with a different plunger hydraulic pressure). It is used to control the tilt of the device by outputting and generating a resultant force of different magnitude and direction). The rotating shaft is provided with an integrated control circuit for controlling circuits such as the attitude measurement circuit and the hydraulic control circuit on the non-rotating sleeve). That is, it is necessary to perform signal transmission between the integrated control circuit provided on the rotating shaft, the attitude measurement circuit provided on the non-rotating sleeve, and the hydraulic pressure control circuit. In the prior art, signal transmission coils are provided on the rotating spindle and the non-rotating bushing respectively to achieve two-way communication of the circuits on the rotating spindle and the non-rotating bushing.

Rotating guide type oilfield drilling tools are generally used in oil wells, and due to the poor environment in oil wells, the coils for signal transmission installed on the rotating shaft and non-rotating bushings are subject to aging and failure. It is easy to occur, causing communication errors and affecting the normal use of rotary guide oil drilling tools.

Therefore, how to improve the reliability of signal transmission in the rotary guide type oil field drilling tool is a technical problem that should be solved as soon as possible.

The embodiments of the present specification provide a signal transmission method and system for a rotary guide type oilfield drilling tool. It is used to solve the technical problem that the signal transmission coil installed in the oilfield is prone to aging and failure, causing communication errors and affecting the normal use of rotary guide oilfield drilling tools.

The examples herein use the following technical solutions.

A method of signal transmission for a rotary guided oilfield drilling tool including a rotating axle, the method comprising:

A first collector acquires a primary signal collected by a primary signal transmission circuit, the primary signal transmission circuit including a primary coil unit provided on the rotating shaft, the primary coil unit comprising a first primary coil and a second primary coil. including two primary coils;

determining whether the primary signal transmission circuit is abnormal based on the primary signal;

When the primary signal transmission circuit is abnormal, a corresponding activation signal is transmitted to a first failure determination module provided in the primary signal transmission circuit to activate the first failure determination module. Determining an operating state of the primary coil unit;

determining an operating mode of signal transmission based on the operating state of the primary coil unit.

In some embodiments of the present application, the rotary guided oilfield drilling tool further comprises a non-rotating bushing, the method comprising:

A second collector acquires the collected secondary signal of a secondary signal transmission circuit, said secondary signal transmission circuit including a secondary coil unit provided on said non-rotating bushing, said secondary coil unit being first and a second secondary coil;

determining whether the secondary signal transmission circuit is abnormal based on the secondary signal;

When the secondary signal transmission circuit is abnormal, a corresponding activation signal is transmitted to a second failure determination module provided in the secondary signal transmission circuit to activate the second failure determination module. and determining the operating state of the secondary coil unit.

In some embodiments of the present application, the operating states include normal states and abnormal states,

The normal state of the primary coil unit is a state in which both the first primary coil and the second primary coil are operating normally,

The abnormal state of the primary coil unit is a state in which the first primary coil operates normally and the second primary coil fails, or a state in which the first primary coil fails and the second primary coil fails. the coil is in working order,

The normal state of the secondary coil unit is a state in which both the first secondary coil and the second secondary coil are operating normally,

The abnormal state of the secondary coil unit is a state in which the first secondary coil operates normally and the second secondary coil fails, or a state in which the first secondary coil fails and the The second secondary coil is operating normally.

In some embodiments of the present application, determining the operating mode of the signal transmission based on the operating state of the primary coil unit specifically includes:

When the primary coil unit is in a normal state and the secondary coil unit is in an abnormal state, the operation mode of the signal transmission is a first signal transmission mode.

In some embodiments of the present application, the first transmission mode of operation comprises:

a first controller in the primary signal transmission circuit splitting corresponding digital signals to obtain a first digital sub-signal and a second digital sub-signal;

modulate the first digital sub-signal to a carrier sub-signal of a first frequency by a first modulation/demodulation filtering module and transmit it to the first primary coil connected to the first modulation/demodulation filtering module; modulate the second digital sub-signal into a carrier sub-signal of a second frequency by a modulation/demodulation filtering module of and transmit it to a second primary coil connected to the second modulation/demodulation filtering module; has a different frequency value than the second frequency,

A normally operating secondary coil in the secondary coil unit receives the carrier sub-signal of the first frequency and the carrier sub-signal of the second frequency;

obtaining corresponding first digital sub-signals and second digital sub-signals by demodulation by a modulation/demodulation filtering module connected to a normal state secondary coil in the secondary coil unit;

A second controller in the secondary signal transmission circuit is to obtain a corresponding digital signal based on the first digital sub-signal, the second digital sub-signal.

In some embodiments of the present application, determining the operation mode of the signal transmission based on the operation state of the primary coil unit and the operation state of the secondary coil unit specifically includes:

The method further includes that the signal transmission mode is a second signal transmission operation mode when the primary coil unit is in an abnormal state and the secondary coil unit is in a normal state.

In some embodiments of the present application, the second transmission mode of operation comprises:

A first controller in the primary signal transmission circuit modulates a corresponding digital signal by a modulation/demodulation filtering module connected to a normally operating primary coil to obtain a carrier signal of a corresponding frequency,

A secondary coil in the secondary coil unit receives the carrier signal, and a second controller in the secondary signal transmission circuit demodulates the carrier signal by a corresponding modulation/demodulation filtering module to produce a corresponding digital signal is to obtain

In some embodiments of the present application, if both the primary signal transmission circuit and the secondary signal transmission circuit are normal, the signal transmission operation mode is determined to be a third signal transmission operation mode. ,
The third signal transmission operation mode includes:
a first controller in the primary signal transmission circuit splitting the corresponding digital signal to obtain a third digital sub-signal, a fourth digital sub-signal;
modulate the third digital sub-signal to a carrier sub-signal of a third frequency by a first modulation/demodulation filtering module and transmit to the first primary coil connected to the first modulation/demodulation filtering module; modulating the fourth digital sub-signal into a carrier sub-signal of a fourth frequency by the modulating/demodulating filtering module of and transmitting it to a second primary coil connected to the second modulating/demodulating filtering module; has a different frequency value from the fourth frequency,
both the first secondary coil and the second secondary coil are capable of inducing the third frequency carrier sub-signal and the fourth frequency carrier sub-signal;
demodulating a carrier sub-signal of a third frequency by a third modulation/demodulation filtering module connected to the first secondary coil to obtain the corresponding third digital sub-signal; demodulate the carrier sub-signal at the fourth frequency by a fourth modulation/demodulation filtering module connected to to obtain a corresponding fourth digital sub-signal;
A second controller in the secondary signal transmission circuit generates corresponding digital signals based on the third digital sub-signal and the fourth digital sub-signal.

In some embodiments of the present application, the first failure determination module determining the operating state of the primary coil unit specifically includes:
the first fault determination module transmitting corresponding excitation signals to the input terminals of the first primary coil and the input terminals of the second primary coil, respectively;
The first failure judgment module collects the signals of the first primary coil output terminal and the second primary coil output terminal after transmitting the corresponding excitation signal, and obtains judgment data based on the collected signals. and
determining an operating state of the primary coil unit based on the determination data.

1. A signal transmission system for a rotary guided oil drilling tool including a rotating axle, said system comprising:
A primary signal transmission circuit is used for collecting primary signals, the primary signal transmission circuit includes a primary coil unit provided on the rotating shaft, the primary coil unit comprises a first primary coil and a second primary coil. a first collector including a coil;
electrically connected to the first collector to acquire the primary signal, determine whether the primary signal transmission circuit is abnormal based on the primary signal, and determine whether the primary signal transmission circuit is abnormal; optionally, a first processor used to send a corresponding activation signal to the first fault determination module;
The first failure determination module is provided in the primary signal transmission circuit, activated based on the activation signal, and used to determine the operating state of the primary coil unit.

The above at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects: by installing the primary coil unit, the rotary guide type oilfield drilling tool It can improve the reliability of signal transmission, reduce maintenance costs, and improve service life. In addition, according to the working state of the primary coil unit, determine the working mode of signal transmission, provide different working modes, ensure that the signal transmission works normally, and maximize the signal transmission speed, Energy consumption can be saved.

The drawings described herein are used to provide a further understanding of the application and form part of the application, and schematic examples of the application and their descriptions are used to interpret the application. are not intended to unduly limit this application.

FIG. 3 is a schematic diagram illustrating the configuration of a signal transmission system of a rotary guide type oilfield drilling tool provided by an embodiment of the present specification; FIG. 4 is a flow diagram of a signal transmission method for a rotary guide type oilfield drilling tool provided by embodiments herein; FIG. 4 is a schematic diagram illustrating another configuration of a signal transmission system for a rotary guide type oilfield drilling tool provided by embodiments herein; FIG. 4 is another flow diagram of a signal transmission method for a rotary guide type oilfield drilling tool provided by embodiments herein;

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present application are further described in detail below with reference to the specific examples and drawings in the specification. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. All other embodiments obtained by persons skilled in the art based on the embodiments of the specification without creative efforts shall fall within the protection scope of the present application.

The technical solutions in the embodiments of the present application are described below with reference to the drawings.

The examples herein provide a schematic diagram illustrating the configuration of a signal transmission system for a rotary guide type oilfield drilling tool. As shown in FIG. 1, the system includes a primary signal transmission circuit 100 and a secondary signal transmission circuit 200. As shown in FIG.

Here, the primary signal transmission circuit 100 includes a first controller 110, a first modulation/demodulation filtering module 121, a second modulation/demodulation filtering module 122, a first switching module 130, a first resonance compensation module 141, a second It may include a resonance compensation module 142, a first processor 150, a first collector 160, a first fault determination module 170, a primary coil unit 180 (including a first primary coil 181, a second primary coil 182). can.

As shown in FIG. 1, the first controller 110 is connected to one end of the first modulation/demodulation filtering module 121, one end of the second modulation/demodulation filtering module 122, and the first processor 150 respectively. The other end of the first modulation/demodulation filtering module 121 is connected to one end of the first resonance compensation module 141 by the first switching module 130 , and the other end of the first resonance compensation module 141 is connected to the first primary coil 181 . , and the output terminal of the first primary coil 181 is connected to the first controller 110 . The other end of the second modulation/demodulation filtering module 122 is connected to one end of the second resonance compensation module 142 through the first switching module 130, and the other end of the second resonance compensation module 142 is connected to the second primary It is connected to the input terminal of the coil 182 and the output terminal of the second primary coil 182 is connected to the first controller 110 . One end of the first collector 160 is connected to the input terminal of the first primary coil 181 , and the other end is connected to the input terminal of the second primary coil 182 . The input terminal of the first primary coil 181 and the input terminal of the second primary coil 182 are connected to one end of the first failure determination module 170, and the other end of the first failure determination module 170 is connected to the input terminal of the second primary coil 182. , the output terminal of the first primary coil 181 and the output terminal of the second primary coil 182 are connected. Also, the first collector 160 and the first fault determination module 170 are both connected to the first processor 150 .

The secondary signal transmission circuit 200 may include a third secondary coil 210 , a fifth resonance compensation module 220 , a third switching module 230 , a fifth modulation/demodulation filtering module 240 and a third controller 250 . . Here, to one end of the third controller 250, the input terminals of the fifth modulation/demodulation filtering module 240, the third switching module 230, the fifth resonance compensation module 220, and the third secondary coil 210 are sequentially connected. , the output terminal of the third secondary coil 210 is connected to the other end of the third controller 250 to form the secondary signal transmission circuit 200, as shown in FIG.

Based on the signal transmission system for rotary guide type oilfield drilling tool shown in FIG. 1, an embodiment of the present application provides a signal transmission method for rotary guide type oilfield drilling tool, as shown in FIG.

At S<b>201 , the first collector 160 collects the primary signal of the primary signal transmission circuit 100 and transmits it to the first processor 150 .

A first collector 160 collects the signal on the first branch circuit where the first primary coil 181 is located and the signal on the second branch circuit where the second primary coil 182 is located. That is, if the first branch and the second branch are normal, the collected primary signals include the signal on the first branch circuit and the signal on the second branch circuit.

The first branch circuit may be composed of the first modulation/demodulation filtering module 121 , the first switching module 130 , the first resonance compensation module 141 and the first primary coil 181 . A second branch circuit may consist of a second modulation/demodulation filtering module 122 , a first switching module 130 , a second resonance compensation module 142 and a second primary coil 182 .

Preferably, the first collector 160 collects the signals of the first primary coil 181 , the second primary coil 182 .

In S202, the first processor 150 determines whether or not the primary signal transmission circuit 100 is abnormal based on the primary signal.

Specifically, the first processor 150 can determine whether the primary signal transmission circuit 100 is abnormal based on the signal included in the primary signal. That is, when the first collector 160 collects the signals on the first branch circuit and the second branch circuit, it indicates that the primary signal transmission circuit 100 is normal, and one branch circuit (eg, the first branch circuit, second branch circuit) are collected, or if all the signals on the first branch circuit and the second branch circuit are not collected, the primary signal transmission circuit 100 is Indicates an abnormality.

It is clear that the anomaly of the primary signal transmission circuit 100 is due to interruption of the first branch circuit and/or the second branch circuit.

In S<b>203 , if primary signal transmission circuit 100 is abnormal, first processor 150 transmits a start signal to first failure determination module 170 provided in primary signal transmission circuit 100 .

At S204, after receiving the activation signal, the first fault determination module 170 transmits corresponding excitation signals to the input terminals of the first primary coil 181 and the second primary coil 182, respectively.

In S205, the first failure determination module 170 collects signals from the output terminals of the first primary coil 181 and the output terminals of the second primary coil 182, respectively.

In S206, the first failure determination module 170 determines the operating state of the primary operating coil unit 180 by collecting signals from the output terminals of the first primary coil 181 and the output terminal of the second primary coil 182. do.

In some embodiments of the present application, the operational states of the primary operating coil unit 180 may include normal, abnormal, and fault conditions.

A normal state of the primary coil unit 180 is a state in which both the first primary coil 181 and the second primary coil 182 are operating normally.

Incidentally, when the primary signal transmission circuit 100 is normal, it can be indicated that the primary coil unit 180 is in a normal state.

The abnormal state of the primary coil unit 180 is the first primary coil 181 operating normally and the second primary coil 182 malfunctioning, or the first primary coil 181 malfunctioning and the second primary coil 182 is in normal operation. Simply put, the abnormal condition of the primary coil unit 180 means that either the first primary coil 181 or the second primary coil 182 is out of order.

A fault state of the primary coil unit 180 is a state in which both the first primary coil 181 and the second primary coil 182 are faulty.

Specifically, when the first failure determination module 170 can collect the signal of the output terminal of the first primary coil 181, it can be determined that the first primary coil 181 is operating normally. show. Conversely, the first primary coil 181 has failed. The second primary coil 182 is similar and will not be described here.

At S<b>207 , the first processor 150 determines the operation mode of signal transmission based on the operating state of the primary coil unit 180 from the first failure determination module 170 .

As described above, by providing the first primary coil 181 and the second primary coil 182, it is possible to effectively improve the reliability of the coils, and to prevent any problem from occurring in any of the primary coils. In this case, it is possible to avoid the loss of signal transmission between the rotating shaft and the non-rotating socket.

In some embodiments of the present application, the first processor 150 determines the operating mode of signal transmission based on the operating state of the primary coil unit 180 from the first failure determination module 170, specifically ,

If the state of the primary coil unit 180 is abnormal, that is, if any of the primary coils in the primary coil unit 180 fails, the normal signal transmission method is used, that is, the primary coils of the primary coil unit 180 are normal. is working properly.

In some embodiments of the present application, when the primary signal transmission circuit 100 is normal, its signal transmission operation mode can be realized as follows.

First processor 150 transmits corresponding instructions to first controller 110 .

The first controller 110 divides the corresponding digital signals according to instructions from the first processor 150 to obtain corresponding fifth digital sub-signals and sixth digital sub-signals.

The fifth digital sub-signal is modulated by the first modulation/demodulation filtering module 121 to obtain a carrier sub-signal with a fifth frequency F5, and the sixth digital sub-signal is modulated by the second modulation/demodulation filtering module 122. , a carrier sub-signal of a sixth frequency F6 is obtained, the fifth frequency F5 being different from the sixth frequency F6.

The carrier sub-signal of the fifth frequency F5 is capacitively compensated by the first resonance compensation module 141 and transmitted to the first primary coil 181, and the carrier sub-signal of the sixth frequency F6 is the second resonance compensation module. Capacitance compensation is performed by the module 142 and transmitted to the second primary coil 182 .

Due to electromagnetic induction, the sub-coils in the secondary signal transmission circuit 200 receive the carrier sub-signal of the fifth frequency F5 and the carrier sub-signal of the sixth frequency F6.

A fifth modulation/demodulation filtering module 240 in the secondary signal transmission circuit 200 activates dual channels in parallel to demodulate the fifth frequency carrier sub-signal and the sixth frequency carrier sub-signal to generate the corresponding digital get the signal.

From the above, it can be seen that normal operation of signal transmission is not affected when the primary coil fails. Furthermore, when the primary coil unit 180 is in a normal state, that is, when the first primary coil 181 and the second primary coil 182 are operating normally, the corresponding digital signal is divided and the corresponding primary It can be transmitted through the coil unit 180, and the speed of signal transmission can be greatly improved.

Note that the modulation/demodulation filtering module described in the embodiments of the present application may be composed of a modulation section, a filtering section, and a demodulation section, such as the first modulation/demodulation filtering module 121 and the second modulation/demodulation filtering module 122 . Here, the modulator can modulate the digital signal into a carrier signal of each frequency, and can adjust the frequency of the carrier signal modulated by the modulator according to actual demand. The demodulator is used to demodulate the carrier signal of the corresponding frequency to obtain the corresponding digital signal, and the frequency of demodulation can be adjusted according to actual needs. A filtering unit is used to optimize filtering for the carrier signal. Also, the modulator, filter, and demodulator may have single-channel communications, dual-channel communications, multi-channel communications, and the like.

In some embodiments of the present application, a secondary signal transmission circuit 300 is constructed on the same principle as the primary signal transmission circuit 100, as shown in FIG. 3, in order to further increase the reliability of the above signal transmission system. , as shown in FIG. 3 (FIG. 3 is another block diagram of the signal transmission system of the rotary guide type oilfield drilling tool provided in the embodiment of this specification). As shown in FIG. 3, the system includes a primary signal transmission circuit 100 and a secondary signal transmission circuit 300. Note that the primary signal transmission circuit 100 is the same as the primary signal transmission circuit shown in FIG. 1, and will not be described in the embodiments of the present application.

As shown in FIG. 3, the secondary signal transmission circuit 300 includes a second controller 310, a third modulation/demodulation filtering module 321, a fourth modulation/demodulation filtering module 322, a second switching module 330, and a third resonance compensation module. 341, a fourth resonance compensation module 342, a second processor 350, a second collector 360, a second failure determination module 370, a secondary coil unit 380 (first secondary coil 381, second secondary coil 382).

The connection method in the secondary signal transmission circuit 300 is the same or similar to the primary signal transmission circuit 100 shown in FIG. 1, but will not be described in the embodiments of the present application.

As shown in FIG. 3, the primary signal transmission circuit 100 includes the primary coil unit 180, and the secondary signal transmission circuit 300 also includes the secondary coil unit 380. Therefore, the safety of signal transmission, Accuracy can be further improved, further improving the user experience.

Based on the signal transmission system provided by the embodiment of the present application shown in FIG. 3, the signal transmission method of the rotary guide type oilfield drilling tool provided by the embodiment of the present application further includes the following steps (see FIG. 4: show).

S401, the second collector 360 collects the secondary signal of the secondary signal transmission circuit 300;

The method by which the second collector 360 collects the secondary signal of the secondary transmission circuit 300 is similar to the principle by which the first collector 160 collects the primary signal of the primary signal transmission circuit 100 .

Specifically, the second collector 360 collects the signal on the third branch circuit where the first secondary coil 381 is located and the signal on the fourth branch circuit where the second secondary coil 382 is located. do. That is, if the third branch and the fourth branch are normal, the above secondary signals include the signal on the third branch circuit and the signal on the fourth branch circuit.

The third branch circuit may be composed of the third modulation/demodulation filtering module 321 , the second switching module 330 , the third resonance compensation module 341 and the first secondary coil 381 . A fourth branch circuit may consist of a fourth modulation/demodulation filtering module 322 , a second switching module 330 , a fourth resonance compensation module 342 and a second secondary coil 382 .

Preferably, the second collector 360 collects the signals at the input terminals of the first secondary coil 381 and the input terminals of the second secondary coil 382 .

In S402, the second processor 350 acquires the secondary signal, and determines whether or not the secondary signal transmission circuit 300 is abnormal based on the secondary signal.

Step S402 is similar to the operating principle of step S202 above, and will not be described in the embodiments of the present application.

In step S403, if the secondary signal transmission circuit 300 is abnormal, a corresponding activation signal is transmitted to the second failure determination module 370 provided in the secondary signal transmission circuit 300 to detect the second failure. Activating the determination module 370 to determine the operating state of the secondary coil unit 380 .

Note that this step S403 is similar to the operation principle of steps S203-S206, so it will not be described in the embodiments of the present application.

That is, the operating state of the secondary coil unit 380 is the same as the operating state of the primary coil unit 180, and may include a normal state, an abnormal state, and a failure state.

Similarly, the normal state of the secondary coil unit 380 is a state in which both the first secondary coil and the second secondary coil 382 are operating normally. The abnormal state of the secondary coil unit 380 is a state in which the first secondary coil 381 operates normally and the second secondary coil 382 malfunctions, or a state in which the first secondary coil 381 malfunctions and the second secondary coil 381 malfunctions. 2 secondary coil 382 is operating normally. Simply put, an abnormal condition of the secondary coil unit 380 means that one of the first secondary coil 381 and the second secondary coil 382 is out of order. A fault state of the secondary coil unit 380 is a state where both the first secondary coil 381 and the second secondary coil 382 are faulty.

Although steps S201-S206 are first performed before steps S401-S403 in some embodiments of the present application as described above, steps S401-S403 may be performed before steps S201-S206. Alternatively, steps S201-S206 and steps S401-S403 may be performed simultaneously, and the specific execution order is not limited in the embodiments of the present application.
According to those skilled in the art, the first processor 150 and the second processor 350 may be the same processor or different processors. If the first processor 150 and the second processor 350 are not the same, embodiments of the present application provide a processor for managing the first processor 150 and the second processor 350 and determining the operational mode of signal transmission. A general processor may be designed.

When the secondary signal transmission circuit 300 includes the first secondary coil 381 and the second secondary coil 382, in step S207, the operating state of the primary coil unit 180 is determined from the first failure determination module 170. Specifically, determining the operation mode of signal transmission based on the operation state of the primary coil unit 180 from the first failure determination module 170 and the operation state of the secondary coil unit 380 from the second failure determination module 370 determining the mode of operation of signal transmission based on the operating state of the .

Specifically, the operational mode of signal transmission can include a first signal transmission operational mode, a second signal transmission operational mode, and a fourth signal transmission operational mode.

When the primary coil unit 180 is in a normal state and the secondary coil unit 380 is in an abnormal state, the signal transmission operation mode is the first signal transmission mode.

When the primary coil unit 180 is in an abnormal state and the secondary coil unit 380 is in a normal state, the signal transmission mode is the second signal transmission operation mode.

When both the primary coil unit 180 and the secondary coil unit 380 are in an abnormal state, the signal transmission mode is the fourth signal transmission operation mode.

Here, the first signal transmission operation mode is as follows.

A first controller in the primary signal transmission circuit 100 splits 110 the corresponding digital signals to obtain a first digital sub-signal, a second digital sub-signal,

modulate a first digital sub-signal into a carrier sub-signal of a first frequency F1 by a first modulation/demodulation filtering module 121 and transmit to a first primary coil 181 connected to said first modulation/demodulation filtering module 121; The second digital sub-signal is modulated by the second modulation/demodulation filtering module 122 into a carrier sub-signal of a second frequency F2 and transmitted to a second primary coil 182 connected to the second modulation/demodulation filtering module 122; The frequency F1 of 1 is different in frequency value from the second frequency F2,
Through electromagnetic induction, the normal secondary coil of the secondary coil unit 380 receives the carrier sub-signal of the first frequency F1 and the carrier sub-signal of the second frequency F2.
obtaining corresponding first digital sub-signals and second digital sub-signals by demodulation by the modulation/demodulation filtering module connected to the normal state secondary coil in the secondary coil unit 380;
A second controller 310 in the secondary signal transmission circuit 300 obtains a corresponding digital signal based on the first digital sub-signal and the second digital sub-signal.

Note that F1 and F5 described above may be the same or different, and F2 and F6 described above may be the same or different.

In the claimed embodiment, the frequency of the modulated carrier signal is determined based on the corresponding parameters of the corresponding modulation/demodulation filtering module, and if the modulation parameter of the modulation/demodulation filtering module changes, the modulated The frequencies of the carrier signals are also different.

Simply put, when the primary coil unit 180 is in a normal state and the secondary coil unit 380 is in an abnormal state, the operation mode is such that the primary coil unit 180 in the signal transmission system shown in FIG. , and will not be described in the embodiments of the present application.

Also, the second signal transmission operation mode is as follows.

The first controller 110 of the primary signal transmission circuit 100 modulates the corresponding digital signal by means of a modulation/demodulation filtering module connected to a normally operating primary coil to obtain a carrier signal of a corresponding frequency,
The secondary coil in the secondary coil unit 380 receives the carrier signal, and the second controller 310 in the secondary signal transmission circuit 300 demodulates the carrier signal with a corresponding modulation/demodulation filtering module to generate a corresponding digital signal. obtain.

Taking as an example the case where the first primary coil 181 in the primary coil unit 180 operates normally and the second secondary coil 182 fails, the second signal transmission operation mode is as follows.
A digital signal to be handled by the first controller 110 in the primary signal transmission circuit 100 is transmitted to the first modulation demodulation filter module 121 to obtain a carrier signal of the seventh frequency F7, and the first resonance compensation module 141 to the first primary coil 181 via . Both the first secondary coil 381 and the second secondary coil 382 in the secondary coil unit 380 can induce a carrier signal of the seventh frequency F7.

A third modulation/demodulation filtering module 321 connected to the first secondary coil 381 can demodulate the received carrier signal to obtain a corresponding digital signal. The fourth modulation/demodulation filtering module 322 connected to the second secondary coil 382 can also demodulate the received carrier signal to obtain a corresponding digital signal.

In the actual use process, due to some other factors, the signal stability and interference resistance of the circuit where the first secondary coil 381 and the second secondary coil 382 are positioned may not match at different timings. be. Therefore, the quality of the signals received at different timings by the circuit where the first secondary coil 381 and the second secondary coil 382 are located is different, and the digital signal demodulated by the third modulation/demodulation filtering module 321 at different timings and the By comparing and complementing the digital signal demodulated by the fourth modulation/demodulation filtering module 322, data with high demodulation quality can be preferentially selected as final received data, thereby improving the accuracy of the entire received data. can be done.

In addition, in the case of the carrier signal of the seventh frequency F7 that the third modulation/demodulation filtering module 321 or the fourth modulation/demodulation filtering module 322 cannot demodulate, the third modulation/demodulation filtering module 321 or the fourth modulation/demodulation filtering module 322 The parameters may be pre-adjusted to achieve a carrier signal at the seventh frequency F7 that can be demodulated.

The first primary coil 181 operates normally, the second primary coil 182 fails, the first secondary coil 381 operates normally, and the second secondary coil 382 fails as an example. , the fourth signal transmission operation mode will be described.

whether the first modulation/demodulation filtering module 121 corresponds to the third modulation/demodulation filtering module 321, i.e. whether the third modulation/demodulation filtering module 321 can demodulate the carrier signal modulated by the first modulation/demodulation filtering module 121; can be determined first. If both of the above do not correspond, the carrier frequency during modulation of the third modulating and demodulating filtering module 321 or the first modulating and demodulating filtering module 121 can be adjusted first to make both correspond. Depending on whether the first modulation/demodulation filtering module 121 corresponds to the third modulation/demodulation filtering module 321 or not, the signal transmission can be performed according to the conventional signal transmission method. This can further improve the reliability of signal transmission.

In some embodiments of the present application, when both the primary signal transmission circuit 100 and the secondary signal transmission circuit 200 are normal, the signal transmission operation mode may be the third signal transmission operation mode. . Specifically, the third signaling mode of operation is as follows.

A first controller 110 in the primary signal transmission circuit 100 divides the corresponding digital signal to obtain a third digital sub-signal, a fourth digital sub-signal,
The first modulation/demodulation filtering module 121 modulates the third digital sub-signal into a carrier sub-signal of a third frequency F3, which is transmitted to the first primary coil 181 by the first resonance compensation module 141, and the second The fourth digital sub-signal is modulated by the modulation/demodulation filtering module 122 into a carrier sub-signal of a fourth frequency F4, transmitted by the second resonance compensation module 142 to the second primary coil 182, and transmitted to the third frequency F3 and F3. The frequency values of the fourth frequency F4 are different,
Through electromagnetic induction, both the first secondary coil 381 and the second secondary coil 382 can receive the carrier sub-signal of the third frequency F3 and the carrier sub-signal of the fourth frequency F4.

The carrier sub-signal of the third frequency F3 is demodulated by the third modulation/demodulation filtering module 321 connected to the first secondary coil 381 to obtain the corresponding third digital sub-signal, which is sent to the second secondary coil. demodulating the carrier sub-signal at the fourth frequency F4 by a fourth modulation/demodulation filtering module 322 connected to 382 to obtain a corresponding fourth digital sub-signal;
The second controller 310 in the secondary signal transmission circuit 300 generates corresponding digital signals according to the third digital sub-signal and the fourth digital sub-signal to complete the signal transmission.

Note that F3 and F1 may be the same or different, F4 and F2 may be the same or different, and are not limited in the embodiments of the present application.

In this way, the first controller 110 can split the corresponding digital signals and modulate them with different carrier frequencies to obtain carrier sub-signals of different carrier frequencies. The carrier sub-signals are transmitted to different primary coils 181, 182, and due to electromagnetic induction, any of the secondary coils 381, 382 in the secondary coil unit 380 can induce carrier sub-signals. By filtering and demodulating the signal by the third modulation/demodulation filtering module 321 and the fourth modulation/demodulation filtering module 322 in the secondary signal transmission circuit 300, the corresponding digital signal is obtained. In addition, compared with the signal transmission method in the prior art, the speed of signal transmission is greatly improved in terms of improving the reliability of the signal transmission system.

When both the primary signal transmission circuit 100 and the secondary signal transmission circuit 200 are normal, the signal transmission operation mode can be the fifth signal transmission operation mode. Specifically, the fifth signaling mode of operation is as follows.

A first controller 110 in the primary signal transmission circuit 100 divides the corresponding digital signals to obtain a seventh digital sub-signal, an eighth digital sub-signal,
Also, the first modulation/demodulation filtering module 121 modulates the seventh digital sub-signal into a carrier sub-signal of the eighth frequency F8, and the first resonance compensation module 141 transmits it to the first primary coil 181. 2 modulation/demodulation filtering module 122 modulates the fourth digital sub-signal into a carrier sub-signal of a ninth frequency F9 and is transmitted by a second resonance compensation module 142 to a second primary coil 182, here an eighth has a different frequency value from the ninth frequency F9.

Similarly, F8 and F1 may be the same or different, and F9 and F2 may be the same or different.

Through electromagnetic induction, both the first secondary coil 381 and the second secondary coil 382 can receive the carrier sub-signal of the eighth frequency F8 and the carrier sub-signal of the ninth frequency F9,
Both the third modulation/demodulation filtering module 321 and the fourth modulation/demodulation filtering module 322 are set to dual-channel communication, and the third modulation/demodulation filtering module 321 filters the carrier sub-signal of the eighth frequency F8 and the carrier sub-signal of the ninth frequency F9. and the carrier sub-signals of F8 to obtain corresponding seventh and eighth digital sub-signals, and the fourth modulation/demodulation filtering module 322 demodulates the carrier sub-signals of the eighth frequency F8. The sub-signal and the carrier sub-signal of the ninth frequency F9 can also be demodulated to obtain the corresponding seventh digital sub-signal and eighth digital sub-signal.

comparing the seventh digital sub-signals obtained by the third modulation/demodulation filtering module 321 with the seventh digital sub-signals obtained by the fourth modulation/demodulation filtering module 322 at different times;
comparing the eighth digital sub-signal obtained by the third modulation/demodulation filtering module 321 with the eighth digital sub-signal obtained by the fourth modulation/demodulation filtering module 322;
A seventh digital sub-signal and an eighth digital sub-signal with high demodulation quality at different timings are selected as signals to be received by the secondary coil unit.

The fifth signal transmission operation mode can not only improve the signal transmission efficiency, but also ensure the accuracy of the signal transmission.

In the embodiments of the present application, the primary signal transmission circuit 100 is the signal transmission side, and the secondary signal transmission circuit 300 is the signal reception side. According to the above embodiments, as will be appreciated by those skilled in the art, the secondary signal transmission path may be the transmission side of the signal, and the mode of operation of the signal transmission is the same or similar to the embodiments of the present application. , are not described in the examples of this application.

The signal transmission method of the rotary guide type oilfield drilling tool provided by the embodiment of the present application effectively improves the reliability of the signal transmission of the rotary guide type oilfield drilling tool by installing the primary coil unit 180, and makes maintenance easier. Reduce costs and improve service life. In addition, according to the working state of the primary coil unit 180, the working mode of signal transmission is determined to provide different working modes, and the signal transmission speed can be increased as much as possible to ensure that the signal transmission works normally. , energy consumption can be saved.

Each embodiment of the present application has been described recursively, and the common and similar parts among the embodiments can be referred to each other, and each embodiment is different from other embodiments. will be focused on. In particular, since the system embodiment is basically similar to the method embodiment, the description is simple, and the relevant points can be referred to part of the description of the method embodiment.

Since the systems and methods provided in the embodiments of the present application have one-to-one correspondence, the systems also have similar beneficial technical effects to the corresponding methods, and the beneficial technical effects of the above methods For the sake of detail, we will not discuss the useful technical effects of the system here.

As will be appreciated by those skilled in the art, embodiments of the invention may be provided as a method, system or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. The present invention may also be embodied on one or more computer-usable storage media (including but not limited to magnetic disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program code. It may also take the form of a computer program product.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It is to be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing apparatus to produce an apparatus whereby the processor of the computer or other programmable data processing apparatus may The executed instructions may produce an apparatus for performing the functions specified in the process or processes of the flow diagrams and/or the block or blocks of the block diagrams.

These computer program instructions may be stored in a computer readable memory that boots a computer or other programmable data processing apparatus to operate in a particular manner, thereby storing in the computer readable memory. The instructions produce a product that includes instruction devices that implement the functions specified in one or more processes of the flow diagrams and/or one or more blocks of the block diagrams.

These computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause the computer or other programmable data processing apparatus to perform a series of operational steps on the computer or other programmable data processing apparatus. The instructions executed on a computer or other programmable device to produce the operations specified in the process or processes of the flow diagrams and/or the block or blocks of the block diagrams. provide steps for doing

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory can include non-persistent memory, random access memory (RAM), and/or non-volatile memory among computer-readable media, such as read-only memory (ROM) and flash memory (flash RAM). etc. Memory is an example of a computer-readable medium.

Computer-readable media include persistent and non-persistent, removable and non-removable media, and any method or technology for storing information can be used. The information may be computer readable instructions, data structures, program modules, or other data. Examples of computer storage media include phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or Other Memory Technology, Read Only Optical Disk Read Only Memory (CD-ROM), Digital Versatile Optical Disk (DVD) or Other Optical Memory, Magnetic Cassette Tape, Magnetic Any tape, cartridge memory, or other magnetic storage device or other non-transmission medium, including, but not limited to, may be used to store information accessible from the computing device. As described herein, computer readable media does not include non-transitory computer readable media such as modulated data signals or carriers.

It should be noted that the terms "comprising," "comprising," or any other variation are intended to cover non-exclusive inclusion, whereby a process, method, article of commerce or equipment comprising a set of elements consists solely of those elements. may contain other elements not expressly recited or specific to such processes, methods, goods or equipment. Unless further limited, an element qualified by the phrase "comprising" indicates that there are other similar elements in the process, method, goods or equipment containing the above element. not excluded.

The above are only examples of the present application and are not intended to limit the present application. For those skilled in the art, the present application is capable of various modifications and alterations. Any modification, equivalent replacement, improvement, etc. made based on the spirit and principle of the present invention shall fall within the protection scope of this application.

Claims (10)

A method of signal transmission for a rotary guide type oil drilling tool including a rotating axle, the method comprising:
A first collector acquires a primary signal collected by a primary signal transmission circuit, the primary signal transmission circuit including a primary coil unit provided on the rotating shaft, the primary coil unit comprising a first primary coil and a second primary coil. including two primary coils;
determining whether the primary signal transmission circuit is abnormal based on the primary signal;
When the primary signal transmission circuit is abnormal, a corresponding activation signal is transmitted to a first failure determination module provided in the primary signal transmission circuit to activate the first failure determination module. Determining an operating state of the primary coil unit;
and determining an operation mode of signal transmission based on the operation state of the primary coil unit. The rotating guided oilfield drilling tool further comprises a non-rotating bushing, the method comprising:
A second collector acquires the collected secondary signal of a secondary signal transmission circuit, said secondary signal transmission circuit including a secondary coil unit provided on said non-rotating bushing, said secondary coil unit being first and a second secondary coil;
determining whether the secondary signal transmission circuit is abnormal based on the secondary signal;
When the secondary signal transmission circuit is abnormal, a corresponding activation signal is transmitted to a second failure determination module provided in the secondary signal transmission circuit to activate the second failure determination module. and determining the operational state of the secondary coil unit. The operating state includes a normal state and an abnormal state,
The normal state of the primary coil unit is a state in which both the first primary coil and the second primary coil are operating normally,
The abnormal state of the primary coil unit is a state in which the first primary coil operates normally and the second primary coil fails, or a state in which the first primary coil fails and the second primary coil fails. the coil is in working order,
The normal state of the secondary coil unit is a state in which both the first secondary coil and the second secondary coil are operating normally,
The abnormal state of the secondary coil unit is a state in which the first secondary coil operates normally and the second secondary coil fails, or a state in which the first secondary coil fails and the 3. The method of claim 2, wherein the second secondary coil is in normal operation. Determining the operation mode of the signal transmission based on the operation state of the primary coil unit specifically includes:
4. The method of claim 3, wherein when the primary coil unit is in a normal state and the secondary coil unit is in an abnormal state, the operating mode of the signal transmission is a first signal transmission mode. The first signal operation transmission mode includes:
a first controller in the primary signal transmission circuit splitting corresponding digital signals to obtain a first digital sub-signal and a second digital sub-signal;
modulate the first digital sub-signal to a carrier sub-signal of a first frequency by a first modulation/demodulation filtering module and transmit it to the first primary coil connected to the first modulation/demodulation filtering module; modulate the second digital sub-signal into a carrier sub-signal of a second frequency by a modulation/demodulation filtering module of and transmit it to a second primary coil connected to the second modulation/demodulation filtering module; has a different frequency value than the second frequency,
A normally operating secondary coil in the secondary coil unit receives the carrier sub-signal of the first frequency and the carrier sub-signal of the second frequency;
obtaining corresponding first digital sub-signals and second digital sub-signals by demodulation by a modulation/demodulation filtering module connected to a normal state secondary coil in the secondary coil unit;
5. The method according to claim 4, wherein a second controller in said secondary signal transmission circuit obtains a corresponding digital signal based on said first digital sub-signal and said second digital sub-signal. described method. Determining the operation mode of the signal transmission based on the operation state of the primary coil unit and the operation state of the secondary coil unit specifically includes:
5. The method of claim 4, further comprising: when the primary coil unit is in an abnormal state and the secondary coil unit is in a normal state, the signal transmission mode is a second signal transmission operation mode. Method. The second signal transmission operation mode includes:
A first controller in the primary signal transmission circuit modulates a corresponding digital signal by a modulation/demodulation filtering module connected to a normally operating primary coil to obtain a carrier signal of a corresponding frequency,
A secondary coil in the secondary coil unit receives the carrier signal, and a second controller in the secondary signal transmission circuit demodulates the carrier signal by a corresponding modulation/demodulation filtering module to produce a corresponding digital signal 7. A method according to claim 6, characterized in that it is obtained by: The method includes:
determining that the signal transmission operation mode is a third signal transmission operation mode when both the primary signal transmission circuit and the secondary signal transmission circuit are normal;
The third signal transmission operation mode includes:
a first controller in the primary signal transmission circuit splitting the corresponding digital signal to obtain a third digital sub-signal, a fourth digital sub-signal;
modulate the third digital sub-signal to a carrier sub-signal of a third frequency by a first modulation/demodulation filtering module and transmit to the first primary coil connected to the first modulation/demodulation filtering module; modulating the fourth digital sub-signal into a carrier sub-signal of a fourth frequency by the modulating/demodulating filtering module of and transmitting it to a second primary coil connected to the second modulating/demodulating filtering module; has a different frequency value from the fourth frequency,
both the first secondary coil and the second secondary coil are capable of inducing the third frequency carrier sub-signal and the fourth frequency carrier sub-signal;
demodulating a carrier sub-signal of a third frequency by a third modulation/demodulation filtering module connected to the first secondary coil to obtain the corresponding third digital sub-signal; demodulate the carrier sub-signal at the fourth frequency by a fourth modulation/demodulation filtering module connected to to obtain a corresponding fourth digital sub-signal;
3. The method according to claim 2, wherein the second controller in the secondary signal transmission circuit generates corresponding digital signals based on the third digital sub-signal and the fourth digital sub-signal. Method. Specifically, when the first failure determination module determines the operating state of the primary coil unit,
the first fault determination module transmitting corresponding excitation signals to the input terminals of the first primary coil and the input terminals of the second primary coil, respectively;
The first failure judgment module collects the signals of the first primary coil output terminal and the second primary coil output terminal after transmitting the corresponding excitation signal, and obtains judgment data based on the collected signals. and
and determining an operational state of the primary coil unit based on the determination data. 1. A signal transmission system for a rotary guided oil drilling tool including a rotating axle, said system comprising:
A primary signal transmission circuit is used for collecting primary signals, the primary signal transmission circuit includes a primary coil unit provided on the rotating shaft, the primary coil unit comprises a first primary coil and a second primary coil. a first collector including a coil;
electrically connected to the first collector to acquire the primary signal, determine whether the primary signal transmission circuit is abnormal based on the primary signal, and determine whether the primary signal transmission circuit is abnormal; optionally, a first processor used to send a corresponding activation signal to the first fault determination module;
The system, wherein the first failure determination module is provided in the primary signal transmission circuit, is activated based on the activation signal, and is used to determine the operating state of the primary coil unit.

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