Apparatus and Method for Oil-Based Mud Formation Imaging Using Resonators

摘要

An oil-based mud formation imaging tool for measuring electrical properties of surrounding formation includes at least one base plate, a first port and a second port deployed on the base plate, surface conductors covering both sides of the base plate, and inside conductors deployed in the first port and the second ports and with gaps from the edges of the first and second ports. The first port is fed with electromagnetic signals by a waveguide and a coupling is formed between the imaging tool and the surrounding formation accordingly. Resonance signals are induced at the second port to be used to compute corresponding formation resistivity and dielectric constant. A corresponding imaging method is also provided.

主权项

1. An imaging system for measuring electrical properties of surrounding formation comprising:
at least one pad; at least one resonator deployed on said at least one pad; an electrical circuit coupled with said at least one resonator to process data derived on said at least one resonator; at least one arm to hold said at least one pad; and a pusher to extract or stretch said at least one arm.