Electrical power transmission for well construction apparatus
Apparatus and methods pertaining to a moveable well construction apparatus to be electrically energized via an electrical power transmission path extending between a stationary power source and the moveable well construction apparatus. The path comprises cables and connectors. A system comprises a detector operable for generating information indicative of whether the path is properly installed. The system permits the path to be electrically energized when the detector-generated information indicates the path is properly installed, and prevents the path from being electrically energized when the detector-generated information indicates the path is not properly installed.
1. An apparatus comprising:
a power source at a stationary side;
an electrical power cable extending from the stationary side to a moveable well construction apparatus;
a first processing system at the moveable well construction apparatus and comprising a processor and a memory including computer program code, wherein the first processing system is operable to transmit a first message; and
a second processing system at the stationary side and comprising a processor and a memory including computer program code, wherein the second processing system is operable to:
receive the first message from the first processing system;
receive a second message input through an input device of the second processing system;
permit the electrical power cable to be electrically coupled to the power source when the first message and the second message are authorized; and
prohibit the electrical power cable from being electrically coupled to the power source when at least one of the first message and the second message is not authorized.
2. The apparatus of claim 1 wherein:
the first processing system is further operable to encrypt the first message; and
the second processing system is further operable to decrypt the first message.
3. The apparatus of claim 2 wherein the first message is encrypted employing a public key received from the second processing system.
4. The apparatus of claim 1 wherein the first processing system is further operable to repeatedly transmit the first message until a termination condition occurs.
5. The apparatus of claim 4 wherein the first processing system is further operable to terminate transmitting the first message when the termination condition occurs.
6. The apparatus of claim 5 wherein the termination condition occurs in response to user input that is input to the first processing system.
7. The apparatus of claim 5 wherein the second processing system is further operable to prohibit the electrical power cable from being electrically coupled to the power source upon failing to receive the first message after a predefined period of time after previously receiving the first message.
8. The apparatus of claim 1 wherein the second processing system is further operable to maintain the first message and the second message by a protected process.
9. The apparatus of claim 8 wherein the first message and the second message are ones of plural first messages and plural second messages, respectively.
10. The apparatus of claim 9 wherein the plural first messages and the plural second messages expire at respective conclusions of predetermined time periods.
11. The apparatus of claim 1 wherein the first and second processing systems respectively transmit and receive the first message via a communication cable, a wireless communication channel, or a combination thereof.
12. A method comprising:
receiving a first message as user input at a first processing system, wherein the first processing system is at a moveable well construction apparatus and comprises a processor and a memory including computer program code;
transmitting the first message from the first processing system;
receiving the first message at a second processing system, wherein the second processing system is at a stationary side and comprises a processor and a memory including computer program code;
receiving a second message as user input at the second processing system;
permitting, by the second processing system, an electrical power cable to be electrically coupled to a power source at the stationary side when the first message and the second message are authorized; and
prohibiting, by the second processing system, the electrical power cable from being electrically coupled to the power source when at least one of the first message and the second message is not authorized.
13. The method of claim 12 further comprising:
encrypting the first message by the first processing system before transmitting the first message, wherein transmitting the first message comprises transmitting the encrypted first message; and
decrypting the first message by the second processing system.
14. The method of claim 13 wherein the first message is encrypted employing a public key received from the second processing system.
15. The method of claim 12 wherein:
the first processing system repeatedly transmits the first message until a termination condition occurs; and
the termination condition occurs in response to user input that is input to the first processing system.
16. The method of claim 15 wherein the prohibiting, by the second processing system, the electrical power cable from being electrically coupled to the power source occurs upon the second processing system failing to receive the first message after a predefined period of time after previously receiving the first message.
17. The method of claim 12 wherein the second processing system maintains the first message and the second message by a protected process.
18. The method of claim 17 wherein the first message and the second message are ones of plural first messages and plural second messages, respectively.
19. The method of claim 18 wherein the plural first messages and the plural second messages expire at respective conclusions of predetermined time periods.
20. The method of claim 12 wherein the first and second processing systems respectively transmit and receive the first message via a communication cable, a wireless communication channel, or a combination thereof.