Methods and systems for analyzing formation properties when performing subterranean operations
AssigneeHalliburton Energy Services, Inc.
InventorsLi Gao, Michael Bittar
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Abstract
A method of analyzing a subterranean formation is disclosed. A first signal is transmitted from a transmitter to the formation and a second signal which is a reflection of the first signal is received. A third signal, which is the second signal reversed in time, is then transmitted to the formation. A fourth signal which is a reflection of the third signal from the formation is then received and monitored.
Claims20
A method of analyzing a subterranean formation comprising:
- transmitting a first signal from a transmitter to the formation;
- receiving a second signal from the formation;
- wherein the second signal is a reflection of the first signal from the formation;
- generating a third signal,
- wherein the third signal is the second signal reversed in time;
- transmitting the third signal to the formation;
- receiving a fourth signal;
- wherein the fourth signal is a reflection of the third signal from the formation;
- monitoring the fourth signal.
A system for analyzing formation properties comprising:
- an information handling system;
- a transmitter placed in a formation and communicatively coupled to the information handling system;
- a receiver placed in the formation and communicatively coupled to the information handling system;
- wherein the transmitter transmits a first signal in response to instructions from the information handling system;
- wherein the receiver receives a second signal, the second signal being a reflection of the first signal;
- wherein the receiver communicates the second signal to the information handling system;
- wherein the transmitter transmits a third signal in response to instructions from the information handling system, the third signal being the second signal reversed in time;
- wherein the receiver receives a fourth signal, the fourth signal being a reflection of the third signal;
- wherein the information handling system uses the fourth signal to at least one of determine a property of an upcoming bed and determine a distance to a bed boundary.
A method for anticipating an upcoming bed when performing subterranean operations in a formation, comprising:
- generating a first signal into the formation;
- receiving a reflection of the first signal as a second signal;
- generating a third signal into the formation, wherein the third signal is the second signal reversed in time;
- receiving a reflection of the third signal as a fourth signal;
- determining a calculated signal using assumed formation properties;
- comparing the fourth signal with the calculated signal;
- modifying the assumed formation properties if the difference between the fourth signal and the calculated signal exceeds a threshold value.
Dependencies are inferred from the claim text.