| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: disclosed method for geo-steering a bored well, which includes: controlling activation of a transmitter sensor on a tool structure arranged relative to a drill bit in a well; receiving a signal in a receiver sensor of the tool structure in response to activation of the transmitter sensor; real-time signal processing, which includes generating data corresponding to formation properties ahead of the drill bit; wherein the receiver sensor is set apart from the transmitter sensor by a separation distance sufficiently large to provide real-time processing of the signal before reaching a boundary of a target zone. Furthermore, data processing includes an inversion operation on the received signal and verifying accuracy of results of the inversion operation before using the results of the inversion operation to geo-steer the well. Geo-steering of the well is based on monitoring the generated data such that the well approaches a target in the target zone with minimal or no overshoot of the target zone. The separation distance is sufficiently large to sense ahead of a drill bit by a sensing distance ranging from 10 to 200 ft (3-61 m) ahead of the drill bit. The invention also discloses a computer-readable storage device, a system and an apparatus for carrying out said method using said computer-readable device.EFFECT: high accuracy of determining the direction of a well during drilling on given deviated or horizontal well trajectory.26 cl, 13 dwg |
