Side scan down hole video tool having two camera
First Claim
1. A down hole video tool for inspecting the interior of a bore hole using a suspension cable for suspending said tool in said bore hole, said suspension cable being capable of supporting said tool, carrying signals and carrying electrical power, said tool comprising:
- a connection portion for attachment to said suspension cable to suspend said tool in said hole;
a rotatable housing rotatably attached to said connection portion at one end of said rotatable housing;
a down hole video camera in said rotatable housing adapted to produce down hole video images for transmission as video signals from said tool through said cable;
a side scan video camera in said rotatable housing adapted to produce side scan video images for transmission as video signals from said tool through said cable;
at least one light source in said rotatable housing adapted to receive electrical power transmitted to said tool through said cable; and
a rotation actuator for rotating said rotatable housing relative to said upper housing so as to scan said side scan video camera, said rotation actuator adapted to receive electrical power transmitted to said tool through said cable.
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Accused Products
Abstract
An apparatus and method of visually examining the sidewalls of a bore hole include a down hole video tool lowered into the bore hole by means of a cable and winch on the surface. The apparatus includes a wide angle end video camera positioned at the tip of a lower section and a rotatable side scan video camera mounted inboard from the end video camera. The end video provides a panorama view of a portion of the bore hole, and the side scan video camera provides a detailed close-up 360 degree view of a portion of the bore hole. An upper section houses a power supply/triplexer, a telemetry board, an FM modulator video amplifier transmission board, gyroscope data interface board, and a gyroscope for showing the directional orientation of either camera and apparatus in the bore hole. The gyroscope orientation and the visual image of the portion of the sidewall viewed is transmitted to a video display monitor in an equipment van on the surface. The image on the screen includes a directional reference point so that the direction of a portion of the sidewall being viewed can be ascertained. The camera images are recorded by a video cassette recorder for a permanent record of the visualization of the entire length of the bore hole. The tool is used to inspect exploratory bore holes, or bore holes previously encased by steel tubing to detect any leaks or other deterioration in the tubing system.
106 Citations
31 Claims
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1. A down hole video tool for inspecting the interior of a bore hole using a suspension cable for suspending said tool in said bore hole, said suspension cable being capable of supporting said tool, carrying signals and carrying electrical power, said tool comprising:
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a connection portion for attachment to said suspension cable to suspend said tool in said hole; a rotatable housing rotatably attached to said connection portion at one end of said rotatable housing; a down hole video camera in said rotatable housing adapted to produce down hole video images for transmission as video signals from said tool through said cable; a side scan video camera in said rotatable housing adapted to produce side scan video images for transmission as video signals from said tool through said cable; at least one light source in said rotatable housing adapted to receive electrical power transmitted to said tool through said cable; and a rotation actuator for rotating said rotatable housing relative to said upper housing so as to scan said side scan video camera, said rotation actuator adapted to receive electrical power transmitted to said tool through said cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A tool for inspecting the interior of a passage, said tool adapted to be inserted into said passage in the direction of a longitudinal axis of said tool, said tool comprising:
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a head portion for supporting said tool in said passage; a rotatable housing rotatably attached to said head portion at one end of said rotatable housing; an axial camera in said rotatable housing having a longitudinal view facing generally along a longitudinal axis of said tool and adapted to produce images for transmission as video signals from said tool through said head portion; a transverse camera in said rotatable housing having a transverse view facing generally transverse to said longitudinal axis of said tool and adapted to produce images for transmission as video signals from said tool through said head portion; and a rotation actuator for rotating said rotatable housing relative to said upper housing so as to scan said transverse camera. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A down hole video inspection system for inspecting the interior of a bore hole, said system comprising:
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(a) a vehicle having a controllable winch, a power supply proximal said vehicle, a video monitor proximal said vehicle, processing circuits proximal said vehicle connected to said video monitor and a terminal proximal said vehicle for entering control commands; (b) a suspension cable connected to said winch, said suspension cable being capable of carrying signals to and from said processing circuits and carrying electrical power from said power supply; and (c) a down hole video tool comprising; (1) a connection portion for attachment to said suspension cable to suspend said tool, whereby said winch controls the position of said tool in said hole; (2) a rotatable housing rotatably attached to said connection portion at one end of said rotatable housing; (3) a down hole video camera in said rotatable housing adapted to produce down hole video images for transmission as video signals from said tool through said cable to said processing circuits for display on said monitor; (4) a side scan video camera in said rotatable housing adapted to produce side scan video images for transmission as video signals from said tool through said cable to said processing circuits for display on said monitor; (5) at least one light source in said rotatable housing adapted to receive electrical power transmitted to said tool through said cable from said power supply; (6) a rotation actuator for rotating said rotatable housing relative to said upper housing so as to scan said side scan video camera, said rotation actuator adapted to receive electrical power transmitted to said tool through said cable. - View Dependent Claims (29, 30, 31)
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Specification