Borehole communication and measurement system
First Claim
Patent Images
1. A method usable with a well, comprising:
- using at least one downhole sensor to establish telemetry within the well;
using said at least one sensor as a permanent sensing device to measure a characteristic of the well other than a characteristic associated with the telemetry; and
using the telemetry established by the sensor to decode a command communicated downhole, the command targeting a downhole tool other than said at least one downhole sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
A technique that is usable with a well includes using at least one downhole sensor to establish telemetry within the well. The sensor(s) are used as a permanent sensing device.
85 Citations
51 Claims
-
1. A method usable with a well, comprising:
-
using at least one downhole sensor to establish telemetry within the well; using said at least one sensor as a permanent sensing device to measure a characteristic of the well other than a characteristic associated with the telemetry; and using the telemetry established by the sensor to decode a command communicated downhole, the command targeting a downhole tool other than said at least one downhole sensor. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A system usable with a well, comprising:
-
at least one sensor adapted to establish telemetry within the well and measure a characteristic of the well other than a characteristic associated with telemetry; a downlink circuit coupled to said at least one sensor to use said at least one sensor to receive a command communicated downhole, the command targeting a tool other than said at least one sensor; and an uplink circuit coupled to said at least one sensor to communicate a well condition sensed by the sensor uphole. - View Dependent Claims (7, 8, 9, 10, 11)
-
-
12. A method usable with a well, comprising:
-
encoding a first code sequence with a synchronization code to produce a second code sequence; and generating a stimulus in fluid of the well to communicate the second code sequence downhole, comprising; adjusting a pressure of the fluid at the surface of the well; measuring the pressure; and repeating the acts of adjusting and measuring in a feedback loop to establish predetermined pressure profiles for logical bit states. - View Dependent Claims (13, 14, 15, 16)
-
-
17. A method usable with a well, comprising:
-
receiving a code sequence indicative of information to be communicated downhole; modulating the code sequence to remove a portion of spectral energy of the code sequence located near zero frequency to create a signal; and generating a stimulus in fluid of the well to communicate the signal downhole. - View Dependent Claims (18, 19, 20, 21, 22)
-
-
23. A method usable with a well, comprising:
-
decoding a flow signal downbole to generate a first code sequence; decoding a pressure signal downhole to generate a second code sequence; and selectively combining the first code sequence and the second code sequence to generate a third code sequence indicative of information communicated downhole. - View Dependent Claims (24, 25, 26, 27, 28, 29)
-
-
30. A system usable with a well, comprising:
-
an uplink modulator located dowuhole in the well to modulate a carrier stimulus to generate a second stimulus transmitted uphole indicative of a downhole measurement; and a downlink module adapted to decode a flow signal communicated from the surface of the well and a pressure signal communicated from the surface of the well and selectively combine the decoded flow and pressure signals to provide a command for a downbole tool. - View Dependent Claims (31, 32, 33, 34)
-
-
35. A system usable with a well, comprising:
-
an encoder to encode a first code sequence with a synchronization code to generate an encoded code sequence; a stimulus generator to generate a stimulus in fluid of the well to communicate the encoded code sequence downhole; and a sensor located at the surface of the well to measure a pressure of the fluid, wherein the stimulus generator uses the measurement in a feedback loop to regulate the pressure. - View Dependent Claims (36, 37, 38, 39)
-
-
40. A system usable with a well, comprising:
-
a modulator to receive a code sequence indicative of information to be communicated downhole and modulate the code sequence to remove a portion of spectral energy of the code sequence located near zero frequency to create a signal; and stimulus generator to generate a stimulus in fluid of the well to communicate the modulated code sequence downhole. - View Dependent Claims (41, 42, 43, 44, 45, 46)
-
-
47. A downhole receiver usable with a well, comprising:
-
a flaw signal detector adapted to decode a flow signal downhole to generate a first code sequence; a pressure signal detector adapted to decode a pressure signal downhole to generate a second code sequence; and a combiner to selectively combine the first code sequence and the second code sequence to generate a third code sequence indicative of information communicated from a surface of the well. - View Dependent Claims (48, 49, 50, 51)
-
Specification