Downhole orbital seismic source

Patent · Tue Oct 17 04:00:00 EDT 1989

OSTI ID:7270611

Cole, J H

This patent describes a downhole seismic source for the simultaneous generation of elliptically polarized shear wave seismic energy and compression wave seismic energy into a fluid-filed borehole wall. It comprises: an elongated cylindrical frame means immersible in the fluid-filled borehole. The frame means having a central axis and first and second ends and an outer wall supportable at a point along the borehole wall; means including a cable connected to the cylindrical frame means first end for supporting the frame means at selected positions along the borehole; and drive means disposed in the frame means in approximately equal spacing from the first and second ends and energizable to impart an eccentric orbital motion to at least a circumferal portion of the frame means outer wall thereby to generate an elliptically polarized shear wave in the borehole wall.

• Assignee: Conoco Inc., Ponca City, OK
• Patent Number(s): US 4874061
• Application Number: PPN: US 7145019A
• OSTI ID: 7270611
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
CABLES
DESIGN
EXPLORATION
EXPLORATORY WELLS
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
RESOURCES
SEISMIC SOURCES
SEISMIC SURVEYS
SURVEYS
WELLS