Stress wave telemetry system for drillstems and tubing strings

Patent · Tue Feb 12 04:00:00 EST 1991

OSTI ID:5090314

Bseisu, R A

This paper describes a system for transmitting signals along one of an elongated tubular drillstem and tubing string between a point in a wellbore and a point at or near the earth's surface. It comprises: an elongated tubular stem extending into a wellbore and supported by support means at the earth's surface; means associated with the stem for sensing a condition in the wellbore related to wellbore operations; means for converting signals related to the condition to a digital signal; means interposed in the stem for generating a compressional wave at a selected frequency in the stem for transmission along the stem toward the earth's surface; means connected to the stem for sensing the vibrations and for transmitting signals related to the vibrations to receiving means at or near the earth's surface.

• Assignee: Atlantic Richfield Co., Los Angeles, CA (USA)
• Patent Number(s): A; US 4992997
• Application Number: PPN: US 7-188231
• OSTI ID: 5090314
• 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
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMMUNICATIONS
DATA PROCESSING
DATA TRANSMISSION
DIGITAL SYSTEMS
DRILLING
GEOPHYSICAL SURVEYS
PROCESSING
SEISMIC SURVEYS
SURVEYS
TELEMETRY
WAVE PROPAGATION
WELL DRILLING