David K Conn

US Patent:

8294591, Oct 23, 2012

Filed:

Mar 29, 2010

Appl. No.:

12/748555

Inventors:

Christopher Paul Reed - West University Place TX, US
David Kirk Conn - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 3/00
H03M 7/00

US Classification:

3408554, 341 50

Abstract:

A digital signal processing receiver, a system and/or a method identifies a decoded signal. The receiver, system and/or method extract at least one sequence of one or more symbols from a digital incoming signal to generate an extracted sequence of symbols. The receiver, system and/or method generate a first result based on a comparison of the extracted sequence of symbols and one or more possible matching digital signals of a set of idealized model data according to a Bayesian probability theory. The receiver, system and/or method generates a second result based on a comparison of an equalized version of the digital incoming signal and the one or more possible matching digital signals. The receiver, system and/or method generates a third result based on a comparison of the extracted sequence of symbols and one or more possible matching digital signals of a modified set of idealized model data. The receiver, system and/or method compare the first, second and third results to determine an idealized result, and identify a decoded signal for the actual incoming signal based on the idealized result.

US Patent:

20130082845, Apr 4, 2013

Filed:

Aug 22, 2012

Appl. No.:

13/591670

Inventors:

David Conn - Sugar Land TX, US
Julius Kusuma - Somerville MA, US

International Classification:

E21B 47/18

US Classification:

3408554

Abstract:

A method for reconstituting a signal due to a flow distortion in a mud-pulse telemetry system, having steps of obtaining at least one parameter to be transmitted by a transmitter to a receiver through the mud-pulse telemetry system, estimating a change in a flow rate in a borehole fluid along a trajectory of the mud-pulse telemetry system undergoing a fluid distortion, estimating a Doppler rate of the signal traveling through the borehole fluid along the trajectory of the mud-pulse telemetry system, calculating a Doppler compensation value for the signal sent along the trajectory in the borehole fluid, transmitting the signal of the at least one parameter through the mud-pulse telemetry system, receiving a portion of the signal of the at least one parameter and reconstituting at least a portion of the signal using the Doppler compensation value.

US Patent:

20130118249, May 16, 2013

Filed:

Jun 16, 2011

Appl. No.:

13/704623

Inventors:

David Conn - Sugar Land TX, US

International Classification:

E21B 47/10

US Classification:

7315221, 7315219

Abstract:

An apparatus for detecting fluid modulation signals transmitted by an instrument in a wellbore includes a motion sensor coupled to a selected position on an exterior of a conduit coupled between a discharge side of a fluid pump and an inlet to a pipe string suspended in the wellbore. The instrument is coupled to the pipe string. A signal detector is in signal communication with the motion sensor.

US Patent:

20130168084, Jul 4, 2013

Filed:

Dec 20, 2012

Appl. No.:

13/721072

Inventors:

Schlumberger Technology Corporation - Sugar Land TX, US
David Conn - Sugar Land TX, US

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION - Sugar Land TX

International Classification:

G01N 19/02
E21B 47/06

US Classification:

16625001, 73 9

Abstract:

A method for determining stick slip conditions. The method may include disposing an operating apparatus in fluid communication with a pressure wave transmission medium. At least one pressure measurement device may be disposed at least partially within the pressure wave transmission medium and at some distance from the operating apparatus. One or more pressure waves generated by the operating apparatus may be measured within the pressure wave transmission medium with the at least one pressure measurement device and pressure measurement data may be generated therefrom. The pressure measurement data from the at least one pressure measurement device may be transmitted to a data acquisition system. The pressure measurement data may be analyzed to detect one or more stick slip conditions from one or more variations in the pressure measurement data.

US Patent:

20220412211, Dec 29, 2022

Filed:

Jun 24, 2022

Appl. No.:

17/808772

Inventors:

- Sugar Land TX, US
David Kirk Conn - Katy TX, US
Pavel Annenkov - Houston TX, US

International Classification:

E21B 47/12

Abstract:

A method, a non-transitory computer-readable medium, and a computing system are provided for determining a telemetry mode of a signal. A drilling telemetry signal is received from a downhole tool in a wellbore. A transformation is determined based at least partially upon the drilling telemetry signal. Multiple features are extracted based at least partially upon the transformation. A decision region is identified based at least partially upon the features. A telemetry parameter is identified based at least partially upon the decision region. A telemetry mode of the drilling telemetry signal is determined based at least partially upon the telemetry parameter. The drilling telemetry signal is decoded based at least partially upon the telemetry mode.

US Patent:

20220412212, Dec 29, 2022

Filed:

Jun 24, 2022

Appl. No.:

17/808651

Inventors:

- Sugar Land TX, US
Pavel Annenkov - Houston TX, US
Arnaud Jarrot - Clamart, FR
David Kirk Conn - Katy TX, US
Robert Tennent - Cambridge MA, US
Richard Hunter - Katy TX, US

International Classification:

E21B 47/18
H04B 11/00
H04B 17/336

Abstract:

A method includes receiving a signal having a telemetry portion and a noise portion. The method may also include identifying one or more harmonic frequencies in the signal. The method may also include determining whether the one or more harmonic frequencies are in a predetermined frequency band. The method may also include determining whether a signal-to-noise ratio (SNR) of the signal is below a predetermined SNR threshold. The method may also include generating one or more notifications in response to the determination whether the one or more harmonic frequencies are in the predetermined frequency band and the determination whether the SNR is below the predetermined SNR threshold.

US Patent:

20220373591, Nov 24, 2022

Filed:

Oct 26, 2020

Appl. No.:

17/755238

Inventors:

- Sugar Land TX, US
David Conn - Katy TX, US

International Classification:

G01R 31/28
G01D 3/08

Abstract:

Methods, computing systems, and computer-readable media for detecting sensor malfunctioning status. The method includes receiving sensor measurements of a first type from a first type of sensor, deriving a first value for a metric from the sensor measurements of the first type, receiving sensor measurements of a second type from a second type of sensor, wherein the second measurements of the second type include a second value for the metric, comparing the first value to the second value, determining whether the first type of sensor or the second type of sensor is malfunctioning based on the comparing, and storing or outputting information indicating whether first type of sensor and the second type of sensor are malfunctioning.

US Patent:

20210302612, Sep 30, 2021

Filed:

Aug 21, 2018

Appl. No.:

17/250701

Inventors:

- Sugar Land TX, US
Oney Erge - Houston TX, US
Sylvain Chambon - Katy TX, US
Richard Meehan - Houston TX, US
Mohammad Khairi Hamzah - Katy TX, US
Darine Mansour - Katy TX, US
David Conn - Katy TX, US

International Classification:

G01V 1/50
G01V 1/36
G01V 1/34
G06N 7/00

Abstract:

A method can include acquiring data associated with a field operation in a geologic environment; processing the data by partitioning operationally and representing symbolically; formulating a symbolic query for an operating procedure specification; performing a search of the symbolically represented data utilizing the symbolic query and a probabilistic chain model; receiving a search result responsive to the search; assessing compliance with the operation procedure specification utilizing the search result; and issuing a control signal to field equipment utilizing the assessment of compliance.