Patent ID: 9476297
Filing Date: 2016-10-25
CPC Classification: E21B

Claim Text:
1. A mud pulse telemetry system comprising: a first pulse sensor in fluid communication with a first pulse generator by way of a drillstring; and a second pulse generator in fluid communication with a second pulse sensor by way of the drillstring; wherein: the first pulse generator is configured to transmit a benchmark pulse with a known characteristic to the first pulse sensor, the benchmark pulse propagating in a first direction along the drillstring; the first pulse sensor is configured to measure the known characteristic of the received benchmark pulse; a first processor is configured to generate one or more telemetry parameters based at least in part on the known characteristic of the received benchmark pulse; and the first processor is configured to control and/or cause a second processor to control the second pulse generator to transmit to the second pulse sensor a set of one or more mud pulses according to the one or more telemetry parameters, the set of one or more mud pulsed propagating along the drillstring in a second direction opposite to the first direction wherein the first processor is configured to determine an attenuation prediction factor according to: where: C