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Multi-stage multi-channel downhole low-power control execution system and control method

It is an execution system and multi-channel technology, which is applied to the automatic control system of drilling, drilling equipment, earthwork drilling and production, etc. It can solve the problem of reducing the performance of the power supply system of intelligent drilling tools, shortening the downhole working time of intelligent drilling tools, and difficulty in meeting communication requirements, etc. problem, to achieve the effect of prolonging the working time of entering the well, improving the success rate and ensuring the stability

Pending Publication Date: 2017-09-29
CNPC BOHAI DRILLING ENG
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Problems solved by technology

The choice of underground and surface communication methods is closely related to various factors such as communication distance, transmission medium type, formation characteristics, and underground working conditions. It is difficult to meet the communication requirements under complex working conditions by relying on a single communication method
In addition, during the process of drilling, waiting, and pulling out of intelligent drilling tools, the entire control execution system usually does not need to work continuously. , storage at the same time, it will inevitably reduce the performance of the intelligent drilling tool power supply system, shorten the downhole working time of the intelligent drilling tool, and affect the drilling efficiency

Method used

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  • Multi-stage multi-channel downhole low-power control execution system and control method

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Embodiment Construction

[0027]The multi-level and multi-channel downhole low power consumption control execution system and control method provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] Such as figure 1 As shown, the multi-level multi-channel downhole low power consumption control execution system provided by the present invention includes:

[0029] Ground control unit 100, multi-channel data communication unit 200, system coordination, wake-up unit 300, downhole control unit 400, drive wake-up unit 500, drive actuator 600, downhole power supply management unit 700, wherein: ground control unit 100 passes multi-channel data The communication unit 200 is connected with the system coordination and wake-up unit 300, the system coordination an...

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Abstract

Provided is a multi-stage multi-channel downhole low-power control execution system and control method. The system includes a ground control unit, a multi-channel data communication unit, a system coordination and wake-up unit, a downhole control unit, a drive wake-up unit, a driving actuator, and a downhole power management unit. The control execution system is designed in a multi-channel communication mode to ensure the stability of data communication between a ground control system and an intelligent drilling tool and improve the success rate of communication data decoding; through the multi-stage wake-up mechanism, the module corresponding to the intelligent drilling tool can be waken up only when the work needs to be done, and an electronic control system of the intelligent drilling tool is in a low-power consumption state in the rest of the time; therefore the control execution system improves the occupancy rate of the effective data in the storage space, prolongs the working time of the intelligent drilling tool entering a well, and has important significance and application value.

Description

technical field [0001] The invention belongs to the technical field of petroleum and natural gas drilling, and in particular relates to a multi-stage and multi-channel downhole low power consumption control execution system and a control method. Background technique [0002] In the field of oil drilling, intelligent drilling tools record downhole pressure, temperature and other parameter information in real time during the measurement while drilling or post-production process, and upload them to the ground control system through the transmission medium. At the same time, the commands issued by the ground control system are transmitted to the intelligent drilling The control unit of the tool drives the actuator to perform corresponding operations after decoding. The choice of downhole and surface communication methods is closely related to various factors such as communication distance, transmission medium type, formation characteristics, downhole working conditions, etc. It ...

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Application Information

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IPC IPC(8): E21B44/00E21B4/00
CPCE21B4/00E21B44/00E21B44/005
Inventor 李绍辉冯强
Owner CNPC BOHAI DRILLING ENG
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