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US 5,790,185 AGranted
Video inspection or logging tool
OwnerFran.cedilla.ois Auzerais, Robert J. Schroeder +2inventors
InventorsFran.cedilla.ois Auzerais, Robert J. Schroeder, Benoit Couet, Jeffrey A. Tarvin
Life of this patent
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Abstract
A video logging tool is described which is particularly well adapted for production logging of oil or gas wells. The tool has both an end view optical system and a side view optical system for imaging side and end view on a CCD array in a camera.
Claims28
A video inspection tool for inspecting the inside of a borehole or pipeline, comprising:
- a housing having an end and a side and being adapted to moved through the borehole or pipeline
- a camera mounted in the housing;
- end lighting means adapted to light an outer end zone;
- side lighting means adapted to light an outer side zone;
- an end window for viewing outwardly into the end zone;
- a side window for viewing outwardly into the side zone;
- an end optical system for transmitting light from the end zone through the end window and to the camera;
- and
- a side optical system for transmitting light from the side zone through the side window and to the camera.
6 more elements
A video inspection or logging tool, comprising
- a housing;
- a camera mounted in the housing and comprising an image plane;
- an optical block mounted in the housing said optical block having a concave surface coated with a mirror for reflecting light from the side of the housing towards the camera;
- a camera lens group disposed between the block and the camera for focusing light reflected from the mirror onto the image plane of the camera;
- and
- side lighting means disposed in the housing for lighting a side zone outside the optical block.
3 more elements
Dependencies are inferred from the claim text.