Richard M Plumb

US Patent:

48887404, Dec 19, 1989

Filed:

May 30, 1986

Appl. No.:

6/869384

Inventors:

Alain Brie - Mendon, FR
Kai Hsu - Danbury CT
Richard A. Plumb - North Tarrytown NY

Assignee:

Schlumberger Technology Corporation - New York NY

International Classification:

G01S 130

US Classification:

367 30

Abstract:

A method for acoustically investigating characteristics of formations penetrated by a borehole such as fractures by taking differential Stoneley wave acoustic energy measurements between pairs of receivers of an array of receivers carried by a logging tool. The receivers of each pair all have the same spacing. The energy is that detected by the receivers in response to acoustic pulses generated by a transmitter spaced from the receivers on the tool. The differential energy measurements are stacked to obtain a stacked differential energy log.

US Patent:

48706272, Sep 26, 1989

Filed:

Dec 26, 1984

Appl. No.:

6/686127

Inventors:

Kai Hsu - Danbury CT
Alain Brie - Bethel CT
Richard A. Plumb - North Tarrytown NY

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

G01V 100

US Classification:

367 69

Abstract:

A method and apparatus are described for generating a quick look display of an acoustic investigation of a borehole wherein a parameter of interest is derived from vertically spaced sonic receivers and displayed in a laterally continuous display log where the parameter values from respective receivers are recorded at preassigned positions. A fracture sensitive parameter is measured such as the energy in a low frequency Stoneley wave and when the parameter values are laterally recorded areas indicative of fractures become visually enhanced particularly with a laterally expanded display log. Techniques for the detection and evaluation of fractures are described.

US Patent:

55178545, May 21, 1996

Filed:

Apr 29, 1994

Appl. No.:

8/236356

Inventors:

Richard A. Plumb - North Tarrytown NY
Yogesh S. Dave - Stamford CT

Assignee:

Schlumberger Technology Corporation - New York NY

International Classification:

E21B 4900
E21B 4910

US Classification:

73151

Abstract:

A modular sonde may be configured in various ways for measurements in open or cased boreholes. The sonde is conveyed on an electric wireline with or without a coiled tubing for conveying hydraulic energy from the surface. Modules common to the configurations include telemetry electronics, orientation, hydraulic energy accumulator, fluid chambers, hydraulic power, pumpout, and flow control. Each configuration has a stress/rheology module suited to the borehole situation. An open-hole sonde configuration has a stress/rheology module with an instrumented, inflatable packer module, an orienting module, and a probe module. A second open-hole sonde configuration has a stress/rheology module with an instrumented straddle-packer assembly. A cased-hole sonde configuration has a gunblock assembly, a gunblock orienting module hydraulics for formation pretest and hydraulics for stressing the formation to obtain data related to formation stress characteristics. A second cased-hole sonde configuration has a straddle-packer assembly, a casing perforation device in the straddle interval, and hydraulics for stressing the formation to obtain data related to formation stress characteristics.

US Patent:

53536371, Oct 11, 1994

Filed:

Jun 9, 1992

Appl. No.:

7/896116

Inventors:

Richard A. Plumb - North Tarrytown NY
Yogesh S. Dave - Stamford CT

International Classification:

E21B 4700

US Classification:

73151

Abstract:

A modular sonde may be configured in various ways for measurements in open or cased boreholes. The sonde is conveyed on an electric wireline with or without a coiled tubing for conveying hydraulic energy from the surface. Modules common to the configurations include telemetry electronics, orientation, hydraulic energy accumulator, fluid chambers, hydraulic power, pumpout, and flow control. Each configuration has a stress/rheology module suited to the borehole situation. An open-hole sonde configuration has a stress/rheology module with an instrumented, inflatable packer module, an orienting module, and a probe module. A second open-hole sonde configuration has a stress/rheology module with an instrumented straddlepacker assembly. A cased-hole sonde configuration has a gunblock assembly, a gunblock orienting module hydraulics for formation pre-test and hydraulics for stressing the formation to obtain data related to formation stress characteristics. A second cased-hole sonde configuration has a straddle-packer assembly, a casing perforation device in the straddle interval, and hydraulics for stressing the formation to obtain data related to formation stress characteristics.