专利名称：Electromagnetic wave resistivity tool having
a tilted antenna for determining the
horizontal and vertical resistivities and
relative dip angle in anisotropic earth
formations
发明人：Michael S. Bittar
申请号：US09/238832
申请日：19990128
公开号：US06163155A
公开日：
20001219
专利内容由知识产权出版社提供
摘要：This invention is directed to a downhole method and apparatus for simultaneously determining the horizontal resistivity, vertical resistivity, and relative dip angle for anisotropic earth formations. The prent invention accomplishes this objective by using an antenna configuration in which a transmitter antenna and a receiver antenna are oriented in non-parallel planes such that the vertical resistivity and the relative dip angle are decoupled. Preferably, either the transmitter or the receiver is mounted in a conventional orientation in a first plane that is normal to the tool axis, and the other antenna is mounted in a cond plane that is not parallel to the first plane. Although this inv
ention is primarily intended for MWD or LWD applications, this invention is also applicable to wireline and possible other applications.
申请人：DRESSER INDUSTRIES, INC.
代理机构：Cox & Smith Incorporated
更多信息请下载全文后查看
