Ronald Cherry

US Patent:

6525534, Feb 25, 2003

Filed:

Jun 15, 2001

Appl. No.:

09/882316

Inventors:

Ridvan Akkurt - Kingwood TX
Ronald E. Cherry - Kingwood TX

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G01V 300

US Classification:

324303, 324300

Abstract:

A system and methods for improving the vertical resolution of NMR logs based on data acquisition methods and signal processing techniques that need not apply Phase Alternated Pair Stacking (PAPS). The method is based on reducing the level of coherent non-formation signals, by estimating these signals and removing the estimates from the underlying NMR pulse echo trains. Once the estimated non-formation signal components have been removed, standard NMR processing methods are applied to derive petrophysical properties of the formation being investigated. In a preferred embodiment the NOPAPS method of this invention is practiced along with a data acquisition sequence, which can be used to further increase the logging speed of the tool or vertical resolution of the measurements.

US Patent:

8215388, Jul 10, 2012

Filed:

Mar 19, 2007

Appl. No.:

12/526716

Inventors:

Anthony H. van Zuilekom - Houston TX, US
Mark A. Proett - Houston TX, US
Ronald E. Cherry - Humble TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 49/10

US Classification:

166264, 166166

Abstract:

A separator for downhole measuring during sampling in a subterranean formation. The separator allows for mixed fluid phases to be separated while flowing formation fluid therethrough.

US Patent:

8395384, Mar 12, 2013

Filed:

Jan 18, 2007

Appl. No.:

12/519956

Inventors:

Ronald E. Cherry - Humble TX, US
Carla B. Hara Fransson - Cleveland TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G01V 3/00

US Classification:

324303, 324300

Abstract:

In some embodiments, apparatus and systems, as well as methods, may operate to acquire fluid signature data representing a plurality of nuclear magnetic resonance echo trains associated with fluids in a material, to simultaneously invert a plurality of relaxation time models to provide inverted results, and to determine fluid properties using the inverted results. The relaxation time models may be associated with the fluids using the fluid signature data after constraining ratios of Trelaxation times to Trelaxation times.

US Patent:

20170212270, Jul 27, 2017

Filed:

Sep 29, 2014

Appl. No.:

15/500842

Inventors:

- Houston TX, US
Da Lou - Houston TX, US
Ronald E. Cherry - Humble TX, US

International Classification:

G01V 5/12
G01T 1/40

Abstract:

A neutron detection apparatus, method, and system includes a scintillation device that emits photons in response to received neutron energy incident on the device. A gamma radiation source, coupled to the scintillation device and configured to emit a reference energy, is also detected by the scintillation device. The reference energy has a different energy than the neutron radiation. A light sensor is coupled to the scintillation device. The light sensor receives and converts the emitted photons into an electrical signal comprising an indication of both the reference energy and the received neutron energy.

US Patent:

20150212227, Jul 30, 2015

Filed:

Mar 1, 2013

Appl. No.:

14/237898

Inventors:

- Houston TX, US
Ronald E. Cherry - Humble TX, US
Magdalena Sandor - Humble TX, US

International Classification:

G01V 3/32
G01V 3/38
G01V 3/34

Abstract:

Downhole nuclear magnetic resonance (NMR) methods that utilize oleophilic nanoparticle may allow for differentiation of light oil and oil-based filtrates. For example, a method may involve drilling a wellbore penetrating a subterranean formation using an oil-based drilling fluid that comprises an oil base fluid and a plurality of oleophilic nanoparticles; performing a plurality of NMR measurements at a plurality of depths of investigation (DOI) of a near-wellbore portion of the subterranean formation; and producing an invasion profile of an oil-based drilling fluid filtrate into the near-wellbore portion of the subterranean formation based on the plurality of NMR measurements.

US Patent:

20150145512, May 28, 2015

Filed:

Feb 10, 2014

Appl. No.:

14/176181

Inventors:

- Houston TX, US
Ronald E. Cherry - Humble TX, US
Magdalena Sandor - Humble TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G01V 3/32

US Classification:

324303

Abstract:

Downhole nuclear magnetic resonance (NMR) methods that utilize oleophilic nanoparticle may allow for differentiation of light oil and oil-based filtrates. For example, a method may involve drilling a wellbore penetrating a subterranean formation using an oil-based drilling fluid that comprises an oil base fluid and a plurality of oleophilic nanoparticles; performing a plurality of NMR measurements at a plurality of depths of investigation (DOI) of a near-wellbore portion of the subterranean formation; and producing an invasion profile of an oil-based drilling fluid filtrate into the near-wellbore portion of the subterranean formation based on the plurality of NMR measurements.