Single well reservoir characterization apparatus and methods
AssigneeSchlumberger Technology Corporation
InventorsKais Gzara, Kamal Babour, Michael Wilt, Ahmed El-Banbi
Life of this patent
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Abstract
An apparatus and a method for characterizing parts of a reservoir surrounding a borehole are provided including using at least one transmitter to emit a probing signal into the borehole and at least one receiver to receive a signal representing a response of the formation to the probing signal, with the distance separating the transmitter and the receiver being variable while suspended in the borehole using for example an apparatus which can be decoupled in the borehole into a stationary and a mobile section, carrying transmitter and receiver.
Claims15
An apparatus for characterizing parts of a reservoir surrounding a borehole, said apparatus comprising at least one transmitter to emit a probing signal and at least one receiver to receive a signal representing a response of said reservoir to said probing signal, with the distance separating said transmitter and said receiver being variable while said transmitter and said receiver are located in said borehole;
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- a stationary section, located between the at least one transmitter and the at least one receiver, designed to maintain a fixed position in the borehole during successive measurements and a mobile section, located between the at least one transmitter and the at least one receiver, designed to change position within said borehole during or between said successive measurements with said stationary section and said mobile section being adapted to decouple while being located in said borehole.
A method for characterizing parts of a reservoir surrounding a borehole, said method comprising the steps of lowering into the borehole an apparatus comprising at least one transmitter to emit a probing signal and at least one receiver to receive a signal representing a response of said reservoir to said probing signal into said borehole, wherein the distance separating said transmitter and said receiver is varied while being located in said borehole;
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- the apparatus further comprising a stationary section, located between the at least one transmitter and the at least one receiver, designed to maintain a fixed position in said borehole during successive measurements and a mobile section, located between the at least one transmitter and the at least one receiver, designed to change position within said borehole during or between said successive measurements and, while remaining in said borehole, decoupling said stationary section and said mobile section.
Dependencies are inferred from the claim text.