FIELD: measurement equipment.
SUBSTANCE: invention relates to well measurement devices, used to measure electromagnetic properties of a well shaft. A well measurement instrument is proposed, which includes at least one non-flat antenna configured to transmit and/or receive electromagnetic radiation. At the same time the non-flat antenna includes at least one non-flat loop of an antenna wire turned around the instrument body. Besides, in one version of realisation the non-flat antenna may be considered double-planar, including the first and second sections of semi-elliptical shape, forming the first and second crossing geometric planes. In the other version of realisation axial separation between the non-flat loop of the antenna wire and the central line of the antenna passing along the circumference changes substantially in a sinusoid manner relative to the azimuthal angle along the circumference of the instrument. The sample non-flat antenna according to the invention may be preferably made as capable of receiving and transmitting radiation substantially of purely x-, y- and z-mode.
EFFECT: provision of directional action of an antenna with the possibility to receive signals from different sides.
15 cl, 13 dwg
