CN115653501A - Controllable rotary sliding guide drilling signal transmission and identification method and system - Google Patents
Controllable rotary sliding guide drilling signal transmission and identification method and system Download PDFInfo
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- CN115653501A CN115653501A CN202211142360.6A CN202211142360A CN115653501A CN 115653501 A CN115653501 A CN 115653501A CN 202211142360 A CN202211142360 A CN 202211142360A CN 115653501 A CN115653501 A CN 115653501A
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Abstract
The invention relates to a controllable rotary sliding guide drilling signal transmission and identification method and system. Mainly comprises the following steps: firstly, setting a controllable rotary sliding guide drilling tool in a state 0 (composite drilling) and a state 1 (rotary sliding guide drilling) on the ground; step two: initializing the system to a state 0 before running in, and running a drilling tool to the bottom of the well; step three: if the rotary sliding guide drilling is needed, the top drive stops rotating, the tool face angle of the bent screw rod is adjusted, the pump is stopped for 30-60 s, the state is set to be 1, and the measurement and control system controls the controllable rotary sliding guide drilling tool to perform rotary sliding guide drilling according to the target tool face angle; step four: if the composite drilling is needed, the pump is stopped for 30-60 s, the state of the measurement and control system is set to be 0 (composite drilling), or the state of the measurement and control system is set to be 0 when the rotating speed is increased to the rotating speed R > 5R/min. The invention has the advantages of small signal capacity, high decoding success rate and good reliability; the system has simple structure and low cost; high efficiency and the like.
Description
Technical Field
The invention relates to the field of petroleum and natural gas drilling engineering, in particular to a controllable rotary sliding guide drilling signal transmission and identification method and system.
Background
The curved screw sliding guiding technology is low in cost, so that the curved screw sliding guiding is still the main part of horizontal well guiding in China, for example, in 2020, the ratio of the curved screw sliding guiding of dense oil gas in Changqing is over 90%. In the sliding guiding process of the bent screw, a drill column does not rotate, the drill column is high in friction resistance and easy to support pressure, so that the drill pressure cannot be effectively transferred, and the mechanical drilling speed is only 1/10-1/5 of that of rotary drilling generally; the 'pressure support' causes the tool surface to be difficult to adjust and control, and the drilling time efficiency is reduced by over 30 percent; and the formation of a rock debris bed is easy, and the risk of sticking and drilling is high.
The rotation of the drill string is one of the most effective means for solving the 'pressure supporting' problem in sliding drilling, a drill string torsional pendulum system is developed in Zhongyangtouqing, the reciprocating rotation of the upper drill string is realized, the speed is increased by over 30 percent, but the application well depth of the system is limited, and the speed increase is limited above 2000m horizontal section. Based on the fact that the larger the rotation range of the sliding drilling drill string is, the better the drilling effect is, the new idea of the sliding guidance of the controllable rotary sliding of the drill string above the MWD and the drill string below the MWD is provided. Based on the principle, a plurality of similar patents are invented at home and abroad, such as: US5458208, US5311952, CN 2651413Y, CN105525875A, CN201910386427.2, US9109402B1, CN208040307U, CN109750989A and the like are all pure mechanical types, no electronic equipment is provided, signal transmission is not needed, technical problems of uncontrollable tool face angle, large error and the like exist, and reports of success conversion of the patents are not found. The patent CN201710028105.1 can realize real-time regulation and control of a tool face, but the regulation and control of the tool face relate to a mud signal downlink technology, the technology needs to be matched with a ground mud pulse transmitting system and an underground decoding system, the rotary sliding guiding operation cost is increased, the rotary sliding guiding technology is not beneficial to reducing the drilling cost, and the controllable rotary sliding bent screw guiding drilling technology is still not mature enough and cannot be applied to production practice, so that a new signal transmission technology with low cost and good reliability is urgently needed to be invented.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a controllable rotary sliding guide drilling signal transmission and identification method and system. The following steps: the method comprises the following steps:
s1, on the ground, setting a controllable rotary sliding guide drilling tool (4) in a state 0 and a state 1, wherein the state 0 is a composite drilling: top drive rotation and bent screw mandrel rotation, wherein the state 1 is rotary sliding guide drilling, and a corresponding program is written into a measurement and control system (7);
s2, before going down the well, the controllable rotary sliding guiding drilling tool (4) is initialized to be in a state of 0, the drilling tool is put down to the bottom of the well, the drilling tool is driven to rotate by a top driver, and the drilling bit (1) is driven to perform composite drilling;
s3, if the rotary sliding steering drilling is required to be carried out according to the target tool face angle beta, the top drive stops rotating, the ground receives the real-time tool face angle alpha measured by the MWD (3), the tool face angle of the bending screw (2) is adjusted, and when the beta-alpha-is less than the delta gamma, the tool face angle adjustment is finished; stopping the pump for 30-60 s, identifying an effective signal of the pump stopping for 30-60 s by the measurement and control system (7), setting the state of the controllable rotary sliding guiding drilling tool (4) to be 1, controlling the electromagnetic valve group to control the controllable rotary sliding guiding drilling tool (4) to isolate the upper part rotation and the lower part torque according to the target tool face angle beta by the measurement and control system (7), and controlling the bent screw (2) to perform rotary sliding guiding drilling according to the target tool face angle beta +/-delta gamma;
and S4, if the composite drilling is needed, stopping the pump for 30-60S, recognizing an effective signal of stopping the pump for 30-60S by the measurement and control system (7), and setting the state of the controllable rotary sliding guiding drilling tool (4) to be 0 (composite drilling).
The following steps: the pump stop signal is identified by the pressure difference delta P between the pressure P1 in the pipe measured by the pressure sensor (11) in the pipe and the pressure P2 outside the pipe measured by the pressure sensor (10) outside the pipe.
The following steps: in S3, the rotary sliding guide drilling of the bending screw (2) according to the target tool face angle beta +/-delta gamma comprises the following steps:
s31, a measurement and control system (7) measures the pressure difference delta P between the pressure P1 in the pipe measured by a pipe pressure sensor (11) and the pressure P2 outside the pipe measured by an pipe pressure sensor (10) in real time;
s32, storing initial time t0 when the pressure difference delta P is less than 0.5-1 MPa;
s33, when the pressure difference delta P is less than 0.5-1 MPa for 30S, storing the tool face angle delta of the bent screw rod measured by the tool face angle measuring instrument (12) according to the frequency of 1-10 Hz;
s34, when the pressure difference delta P is less than 0.5-1 MPa for the duration t = 30S-60S, filtering the stored tool face angle delta of the bent screw, and averaging to obtain the tool face angle delta 1 of the bent screw;
s35, controlling the rotary sliding guiding drilling tool (4) to be in the state 1;
and S36, performing rotary sliding guide drilling by the bent screw (2) according to the target tool face angle delta 1 +/-delta gamma.
The following steps: in S1, state 0 and state 1 are opposite states to each other, that is: the controllable rotary sliding guiding drilling tool (4) is always in a state 0 or a state 1; when the controllable rotary sliding guiding well drilling tool (4) is in a state 0, the measurement and control system (7) recognizes an effective signal of 30-60 s, and the controllable rotary sliding guiding well drilling tool (4) is changed into a state 1; when the controllable rotary sliding guiding well drilling tool (4) is in the state 1, the measurement and control system (7) recognizes effective signals of 30-60 s, and the controllable rotary sliding guiding well drilling tool (4) is changed into the state 0.
The following steps: the measurement and control system (7) utilizes the tool face measuring instrument (12) to measure the rotation speed R of the MWD (3) and the bent screw (2) in real time, when the rotation speed R is more than 5R/min, the measurement and control system (7) sets the state of the controllable rotary sliding guiding drilling tool (4) to be 0, the pump stopping process of switching from the sliding guiding drilling state to the composite drilling state can be avoided, the non-drilling operation time is shortened, and the drilling time is prolonged.
Compared with the prior art, the invention has the advantages that:
(1) The signal capacity is small, the decoding success rate is high, and the reliability is good. The invention only has two signals of '0' and '1', and the signals are alternatively implemented, the signal capacity is very small, the bottom hole measurement and control system is easy to identify and decode, and the reliability is very high.
(2) The system has simple structure and low cost. The down-signal of the invention does not need a mud pulse transmitting system and a complex mud pulse decoding system at the bottom of the well, and has simple software and hardware systems and low cost.
(3) High efficiency and short signaling auxiliary operation time. The invention can realize signal transmission only by stopping the pump for 30-60 s or increasing the rotating speed, and has short time consumption and extremely high efficiency.
Drawings
FIG. 1 is a schematic diagram of a method for transmitting and identifying signals for drilling with controllable rotary sliding steerable;
FIG. 2 is a method of signal identification for controlled rotary sliding steerable drilling;
FIG. 3 is a controlled rotary sliding steerable drilling mud pulse control signal;
FIG. 4 is a controlled rotary sliding steerable drilling mud pulse and rotation combined signal;
fig. 5 is a schematic diagram of a controlled rotary sliding steerable drilling system.
In the figure: 1-drill bit, 2-bent screw, 3-MWD, 4-controllable rotary sliding guiding drilling tool, 5-drill rod, 6-electromagnetic valve group, 7-measurement and control system, 8-external pipe pressure sensor, 9-internal pipe pressure sensor and 10-tool face angle measuring instrument.
Detailed Description
In order to make the technical features and objects of the present invention more clearly understood, embodiments of the present invention will be described with reference to the accompanying drawings.
Example 1: as shown in fig. 1 to 3, the present embodiment provides a method and a system for transmitting and identifying a controllable rotary sliding steerable drilling signal, which comprises the following steps:
s1, setting a controllable rotary sliding guiding drilling tool (4) in a state 0 and a state 1 on the ground, wherein the state 0 is a composite drilling: top drive rotation and bent screw mandrel rotation, wherein the state 1 is rotary sliding guide drilling, and a corresponding program is written into a measurement and control system (7);
s2, before going down the well, the controllable rotary sliding guiding drilling tool (4) is initialized to be in a state of 0, the drilling tool is put down to the bottom of the well, the drilling tool is driven to rotate by a top driver, and the drilling bit (1) is driven to perform composite drilling;
s3, if the rotary sliding steering drilling is required to be carried out according to the target tool face angle beta, the top drive stops rotating, the ground receives the real-time tool face angle alpha measured by the MWD (3), the tool face angle of the bending screw (2) is adjusted, and when the beta-alpha-is less than the delta gamma, the tool face angle adjustment is finished; stopping the pump for 30-60 s, identifying an effective signal of the pump stopping for 30-60 s by the measurement and control system (7), setting the state of the controllable rotary sliding guiding drilling tool (4) to be 1, controlling the electromagnetic valve group to control the controllable rotary sliding guiding drilling tool (4) to isolate the upper part rotation and the lower part torque according to the target tool face angle beta by the measurement and control system (7), and controlling the bent screw (2) to perform rotary sliding guiding drilling according to the target tool face angle beta +/-delta gamma;
and S4, if the composite drilling is needed, stopping the pump for 30-60S, recognizing an effective signal of stopping the pump for 30-60S by the measurement and control system (7), and setting the state of the controllable rotary sliding guiding drilling tool (4) to be 0 (composite drilling).
Example 2: s1, on the ground, setting a controllable rotary sliding guide drilling tool (4) in a state 0 and a state 1, wherein the state 0 is a composite drilling: top drive rotation and bent screw mandrel rotation, wherein the state 1 is rotary sliding guide drilling, and a corresponding program is written into a measurement and control system (7);
s2, before going down the well, the controllable rotary sliding guiding drilling tool (4) is initialized to be in a state of 0, the drilling tool is put down to the bottom of the well, the drilling tool is driven to rotate by a top driver, and the drilling bit (1) is driven to perform composite drilling;
s3, if the rotary sliding steering drilling is required to be carried out according to the target tool face angle beta, the top drive stops rotating, the ground receives the real-time tool face angle alpha measured by the MWD (3), the tool face angle of the bending screw (2) is adjusted, and when the beta-alpha-is less than the delta gamma, the tool face angle adjustment is finished; stopping the pump for 30-60 s, identifying an effective signal of the pump stopping for 30-60 s by the measurement and control system (7), setting the state of the controllable rotary sliding guiding drilling tool (4) to be 1, controlling the electromagnetic valve group to control the controllable rotary sliding guiding drilling tool (4) to isolate the upper part rotation and the lower part torque according to the target tool face angle beta by the measurement and control system (7), and controlling the bent screw (2) to perform rotary sliding guiding drilling according to the target tool face angle beta +/-delta gamma;
s4, if composite drilling is needed, the measurement and control system (7) measures the rotation speed R of the MWD (3) and the bent screw (2) in real time by using the tool face measuring instrument (12), when the rotation speed R is larger than 5R/min, the measurement and control system (7) sets the state of the controllable rotary sliding guiding drilling tool (4) to be 0, the pump stopping process of switching from the sliding guiding drilling state to the composite drilling state can be avoided, the non-drilling operation time is shortened, and the drilling time is improved.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the scope of the invention.
Claims (5)
1. A controllable rotary sliding guide drilling signal transmission and identification method and system are characterized in that: the method comprises the following steps:
s1: on the ground, the controllable rotary sliding guiding drilling tool (4) is set to be in two states, namely a state 0 and a state 1, wherein the state 0 is a composite drilling: top drive rotation + bent screw mandrel rotation, wherein the state 1 is rotary sliding guide drilling, and programs of the state 1 and the state 0 are written into a measurement and control system (7);
s2: before descending the well, the controllable rotary sliding guiding drilling tool (4) is initialized to a state 0, a drilling tool is descended to the bottom of the well, the drilling tool is driven to rotate by a top drive, and the drilling bit (1) is driven to perform composite drilling;
s3: if the rotary sliding guide drilling is required to be carried out according to the target tool face angle beta, the top drive stops rotating, the ground receives the real-time tool face angle alpha measured by the MWD (3), the ground rotary drill rod (5) adjusts the target tool face angle beta of the bending screw rod (2), and when the beta-alpha-is less than the delta gamma, the tool face angle adjustment is finished; stopping the pump for 30-60 s, identifying an effective signal of the pump stopping for 30-60 s by the measurement and control system (7), setting the state of the controllable rotary sliding guiding drilling tool (4) to be 1, controlling the electromagnetic valve group to control the controllable rotary sliding guiding drilling tool (4) to isolate the upper part rotation and the lower part torque according to the target tool face angle beta by the measurement and control system (7), and controlling the bent screw (2) to perform rotary sliding guiding drilling according to the target tool face angle beta +/-delta gamma;
s4: if composite drilling is needed, the pump is stopped for 30-60 s, the measurement and control system (7) identifies effective signals of the pump 30-60 s, and the controllable rotary sliding guide drilling tool (4) is set to be 0 (composite drilling) from the state 1 (rotary sliding guide drilling).
2. The controllable rotary sliding guide drilling signal transmission and identification method and system according to claim 1, wherein: in S1, state 0 and state 1 are opposite states to each other, that is: the controllable rotary sliding guiding drilling tool (4) is always in a state 0 or a state 1; when the controllable rotary sliding guiding well drilling tool (4) is in a state 0, the measurement and control system (7) recognizes an effective signal of 30-60 s, and the controllable rotary sliding guiding well drilling tool (4) is changed into a state 1; when the controllable rotary sliding guiding well drilling tool (4) is in the state 1, the measurement and control system (7) recognizes effective signals of 30-60 s, and the controllable rotary sliding guiding well drilling tool (4) is changed into the state 0.
3. The controllable rotary sliding guide drilling signal transmission and identification method and system according to claim 1, wherein: the pump stop signal is identified by the pressure difference delta P between the pressure P1 in the pipe measured by the pressure sensor (9) in the pipe and the pressure P2 outside the pipe measured by the pressure sensor (8) outside the pipe.
4. The controllable rotary sliding guide drilling signal transmission and identification method and system according to claim 1, wherein: in S3, the rotary sliding guide drilling of the bending screw (2) according to the target tool face angle beta +/-delta gamma comprises the following steps:
s31: the measurement and control system (7) measures the pressure difference delta P between the pressure P1 in the pipe measured by the pipe pressure sensor (9) and the pressure P2 outside the pipe measured by the pipe pressure sensor (8) in real time;
s32: when the pressure difference delta P is less than 0.5-1 MPa, storing the initial time t0;
s33: when the pressure difference delta P is less than 0.5-1 MPa for 30s, storing the tool face angle delta of the bent screw, which is measured by the tool face angle measuring instrument (12), according to the frequency of 1-10 Hz;
s34: when the pressure difference delta P is less than 0.5-1 MPa and the lasting time t =30 s-60 s, filtering the stored tool face angle delta of the bent screw, and averaging to obtain a tool face angle delta 1 of the bent screw;
s35: the measuring and controlling system (7) changes the state 0 of the rotary sliding guiding well drilling tool (4) into the state 1;
s36: and starting a pump and rotating a drill rod (5), and simultaneously controlling the rotary sliding guiding drilling tool (4) to perform rotary sliding guiding drilling by the measurement and control system (7) according to the target tool face angle delta 1 +/-delta gamma.
5. The controllable rotary sliding guide drilling signal transmission and identification method and system according to claim 1, wherein: s4, before the pump is stopped, the rotating speed of the drill rod (5) is increased, the measuring and controlling system (7) measures the rotating speeds R of the MWD (3) and the bent screw rod (2) in real time by using the tool face measuring instrument (10), and when the rotating speed R is larger than 10R/min, the measuring and controlling system (7) sets the state of the controllable rotary sliding guide drilling tool (4) to be 0; if the rotating speed of the drill rod (5) cannot be set to the state 0 from the state 1, the pump is started and stopped for 30-60 s, the state of the controllable rotary sliding guiding drilling tool (4) is set to the state 0 from the state 1, the pump stopping process of switching from the sliding guiding drilling state to the composite drilling state can be avoided, the non-drilling operation time is shortened, and the drilling time is prolonged; the signal identification reliability of the controllable rotary sliding guiding drilling tool (4) can be improved by improving two signals of rotating speed and stopping the pump.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211142360.6A CN115653501A (en) | 2022-09-20 | 2022-09-20 | Controllable rotary sliding guide drilling signal transmission and identification method and system |
| US18/470,510 US20240093589A1 (en) | 2022-09-20 | 2023-09-20 | Wireless remote control method and system for controllable rotary sliding guiding drilling |
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| CN202211142360.6A CN115653501A (en) | 2022-09-20 | 2022-09-20 | Controllable rotary sliding guide drilling signal transmission and identification method and system |
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| CN115653501A true CN115653501A (en) | 2023-01-31 |
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| CN202211142360.6A Pending CN115653501A (en) | 2022-09-20 | 2022-09-20 | Controllable rotary sliding guide drilling signal transmission and identification method and system |
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