Mud pulse transmission time delay correction
AssigneeBaker Hughes Oilfield Operations LLC
InventorJohn Macpherson
Life of this patent
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Abstract
Methods and systems for performing borehole operations are described. The methods include generating an information signal in a borehole using a pulse generation member, wherein the information signal comprises a pressure variation within a borehole fluid, detecting, in the borehole, a first signal that correlates to the information signal at a first time, detecting, in the borehole, a second signal that correlates to the information signal at a second time, and performing a borehole operation using the first signal and the second signal.
Claims20
A method for performing a borehole operation comprising:
- generating an information signal in a borehole using a pulse generation member, wherein the information signal comprises a pressure variation within a borehole fluid;
- detecting, in the borehole, a first signal that correlates to the information signal at a first time;
- detecting, in the borehole, a second signal that correlates to the information signal at a second time;
- and
- performing a borehole operation using the first signal and the second signal.
A downhole system for performing a downhole operation, the downhole system comprising:
- a downhole assembly disposed in a borehole;
- a pulse generation member disposed on the downhole assembly and configured to generate an information signal, wherein the information signal comprises a pressure variation within a borehole fluid;
- a pressure sensor arranged on the downhole assembly and configured to detect a first signal that correlates to the information signal at a first time and a second signal that correlates to the information signal at a second time;
- and
- a processor configured to estimate data indicative of a transmit time, the data indicative of the transmit time estimated by using the first signal and the second signal.
Dependencies are inferred from the claim text.