Downhole sensing in borehole environments
AssigneeHalliburton Energy Services, Inc.
InventorsMichael S. BITTAR, Burkay DONDERICI
Life of this patent
Estimating the term…
Abstract
A drill string can include at least one transmit antenna and at least one receive antenna. The transmit antenna transmits at least one electromagnetic signal into a region of an earth formation. The receive antenna receives the signal from the region of the earth formation. The transmit antenna comprises one of a magnetic dipole and an electric dipole, and the receive antenna comprises the other of the magnetic dipole and the electric dipole. At least one characteristic of the region of the earth formation is determined, based at least partially on the signal received by the receive antenna. A homogeneous part of the electromagnetic signal may be reduced, to thereby increase a depth of detection of the characteristic.
Claims8
1-16. (canceled)
A method of sensing at least one characteristic of a region of a subterranean earth formation, the method comprising:
- transmitting, via a transmit antenna positioned on a drill string, an electromagnetic signal into the region;
- receiving, via a receive antenna positioned on the drill string, the electromagnetic signal from the region;
- and
- reducing a homogeneous part of the electromagnetic signal, thereby increasing a depth of detection of the characteristic.
Dependencies are inferred from the claim text.