Glenn J Smollinger

US Patent:

20110204897, Aug 25, 2011

Filed:

Apr 8, 2008

Appl. No.:

12/680868

Inventors:

Guoyu Hu - Houston TX, US
Glenn Smollinger - Eagleville PA, US
Michael S. Bittar - Houston TX, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

G01V 3/18

US Classification:

324351

Abstract:

Various disclosed resistivity imaging tools and methods provide a high-resolution electrode configuration for imaging in oil-based imaging in oil-based muds. Some tool embodiments have a sensing surface that comprises: a measurement electrode, a focus electrode surrounding the measurement electrode, and a return electrode surrounding the focus electrode. The sensing surface can be provided on an extendable sensor pad or on the wall-contacting portion of a stabilizer. Some method embodiments include measuring the measurement electrode current while driving a voltage signal between the measurement electrode and the return electrode. The voltage signal may simultaneously or sequentially provide energy at different frequencies. The resistivity measurements are combined with tool position and orientation measurements to form a borehole wall image. Robust and reliable performance is expected in the hostile conditions often experienced by logging while drilling (LWD) tools, coupled with the ability to make micro-resistivity measurements with a resolution approaching that of electrode-grid tool designs.

US Patent:

42008301, Apr 29, 1980

Filed:

Aug 10, 1977

Appl. No.:

5/823249

Inventors:

George W. Oughton - Horsham PA
Glenn J. Smollinger - Cornwells Heights PA

Assignee:

ESB Incorporated - Philadelphia PA

International Classification:

H02J 710
H02M 3315

US Classification:

320 32

Abstract:

An inverting circuit of the series resonant type and including a pair of SCR's operated at variable off-times for controlling the charging of a battery. A control circuit is provided for gating the SCR's at appropriate times in response to sensed circuit current, and battery voltage. Instantaneous resonant circuit current is monitored to derive timing information for firing the SCR's and for anticipating commutation failures.

US Patent:

43119204, Jan 19, 1982

Filed:

May 2, 1979

Appl. No.:

6/035288

Inventors:

Glenn J. Smollinger - Fairless Hills PA

Assignee:

ESB United States, Inc. - Wilmington DE

International Classification:

H02J 906

US Classification:

307 66

Abstract:

An emergency power supply designed to furnish sinusoidally varying alternating current to a load under emergency conditions is disclosed. It features a fixed phase shift between input and battery charging waveforms, and intermittent inverter operation under normal (i. e. , non-emergency ) conditions.