Replaceable antennas for subsurface monitoring apparatus
AssigneeSchlumberger Technology Corporation
InventorsBrian Clark, John E. Edwards
Life of this patent
Estimating the term…
Abstract
An antenna structure is separately and independently formed with respect to a tubular adapted for long-term disposal within a wellbore. The antenna is adapted for easy and rapid deployment on the tubular. An independently formed ‘partial ring section’ (or arcuate shaped member) contains an antenna coil. In one embodiment, one or more of the independently formed partial ring sections is placed on the exterior of the tubular to form a well completion. In another embodiment, a plurality of partial ring sections are coupled to a spooled cable for rapid deployment of the antennas onto a tubular in the field. Another embodiment includes partial ring sections forming an antenna with multiple coils of differing orientation to provide directional sensitivity.
Claims42
A wellbore apparatus, comprising:
- an elongated tubular adapted for long-term disposal within said a wellbore;
- at least one arcuate shaped member adapted to function as an antenna and for disposal on said tubular, said arcuate shaped member being independently formed with respect to said tubular;
- and
- each at least one arcuate shaped member having a coil disposed therein.
A method of deploying an antenna on a tubular adapted for long-term disposal in a wellbore, comprising:
- a) disposing an arcuate shaped member on the exterior of said tubular, said arcuate shaped member being independently formed with respect to said tubular and including a coil disposed therein;
- and
- b) coupling an electrical source to said coil.
A system for deployment of antennas within a wellbore, said antennas adapted to transmit or receive electromagnetic energy, comprising:
- an electrical cable having said antennas coupled thereto;
- a tubular adapted for disposal within said wellbore and to receive each of said antennas;
- wherein each of said antennas comprises an arcuate shaped member independently formed with respect to said tubular;
- and
- each said arcuate shaped member having a coil disposed therein.
A method for deploying antennas within a wellbore, said antennas adapted to transmit or receive electromagnetic energy, comprising:
- a) mounting each of said antennas along a tubular adapted for disposal within said wellbore, each said antenna being coupled to an electrical cable and comprising an arcuate shaped member independently formed with respect to said tubular, each said arcuate shaped member having a coil disposed therein;
- and
- b) disposing said tubular within said wellbore.
Dependencies are inferred from the claim text.