Apparatus and method for synchronized formation measurement
AssigneeBaker Hughes Incorporated
InventorsThomas Kruspe, Hartmut Schrader
Life of this patent
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Abstract
The present invention provides an apparatus and method for minimizing movement of a drill string during MWD with vibration-sensitive instruments comprising conveying a drill string into a borehole with a sensor mounted on the drill string for sensing a parameter of interest of a formation. A clocked controller is disposed on the drill string for controlling timing of the sensor; and a second clocked controller is disposed at a surface location. During drilling operations, the clocked controllers are synchronized such that the surface controller is performing certain tasks in timed sequence with the sensor even though the surface controller is not connected to the sensor.
Claims23
An apparatus for MWD comprising:
- (a) a drill string;
- (b) a sensor mounted on the drill string for sensing a parameter of interest of a formation;
- (c) a first clocked controller disposed on the drill string for controlling operations of the sensor;
- and
- (d) a second clocked controller disposed at a surface location used for control of a drilling operation, the second clocked controller being synchronized with the first clocked controller.
A method for MWD comprising:
- (a) conveying a drill string into a well borehole;
- (b) operating a sensor for determining a parameter of interest of a formation traversed by the borehole with a sensor mounted on the drill string;
- (c) controlling operation of the sensor with a first clocked controller disposed on the drill string;
- and
- (d) synchronizing a second clocked controller disposed at a surface location with the first clocked controller, wherein the second clocked controller is used for control of a drilling operation.
Dependencies are inferred from the claim text.