ANTENNA OF AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS
First Claim
1. An antenna (3) of an electromagnetic probe used in investigation of geological formations (GF) surrounding a borehole (WBH) comprising a conductive base (31) and an antenna element (32), the conductive base (31) comprising an opened non-resonant cavity (33), the antenna element (32) being embedded in the cavity (33) and going right through the cavity, the antenna element (32) being isolated from the conductive base (31), the antenna element (32) being coupled to at least one electronic module via a first (34A) and a second (34B) port, respectively, the electronic module operating the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole.
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Accused Products
Abstract
An antenna 3 of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base 31 and an antenna element 32. The conductive base 31 comprises an opened non-resonant cavity 33. The antenna element 32 is embedded in the cavity 33 and goes right through the cavity. The antenna element 32 is isolated from the conductive base 31. The antenna element 32 is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole.
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Citations
16 Claims
- 1. An antenna (3) of an electromagnetic probe used in investigation of geological formations (GF) surrounding a borehole (WBH) comprising a conductive base (31) and an antenna element (32), the conductive base (31) comprising an opened non-resonant cavity (33), the antenna element (32) being embedded in the cavity (33) and going right through the cavity, the antenna element (32) being isolated from the conductive base (31), the antenna element (32) being coupled to at least one electronic module via a first (34A) and a second (34B) port, respectively, the electronic module operating the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole.
Specification