Li Jiang

US Patent:

7339160, Mar 4, 2008

Filed:

Nov 19, 2003

Appl. No.:

10/532578

Inventors:

Bhavani Raghuraman - Wilton CT, US
Anthony Robert Holmes Goodwin - Sugar Land TX, US
Oliver Clinton Mullins - Ridgefield CT, US
Philip Andrew Rabbito - Milford CT, US
Li Jiang - Ridgefield CT, US
Timothy Gareth John Jones - Cottenham, GB
Andrew Loris Kurkjian - Sugar Land TX, US
Gale Hyslip Gustavson - Brookfield CT, US

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

G01V 5/04
G01V 5/08

US Classification:

250259, 2502691

Abstract:

The invention concerns an apparatus for analysing water chemistry. According to the invention, the apparatus is adapted to operate downhole and comprises a colouring agent supply device for supplying a colouring agent to a water sample, the colour of the water sample thus supplied being indicative of the water sample chemistry, and a colorimetric analyser arranged to determine the colour of the water sample.

US Patent:

7644611, Jan 12, 2010

Filed:

Sep 13, 2007

Appl. No.:

11/854551

Inventors:

Akira Kamiya - Sagamihara, JP
Gary Oddie - Cambridgeshire, GB
Stephane Vannuffelen - Southampton, GB
Tsutomu Yamate - Yokohama, JP
Oliver C. Mullins - Ridgefield CT, US
Bhavani Raghuraman - Wilton CT, US
Albert Ballard Andrews - Wilton CT, US
Andrew Carnegie - Kuala Lumpur, MY
Chengli Dong - Sugar Land TX, US
Marian Faur - Palaiseau, FR
Christopher Harrison - Auburndale MA, US
Kentaro Indo - Edmonton, CA
Li Jiang - Newton MA, US
Michael O'Keefe - Blackmans Bay, AU

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 49/08

US Classification:

7315228, 2502692, 2502691, 2502693, 2502697

Abstract:

A downhole fluid analysis tool capable of fluid analysis during production logging that includes a phase separator and a plurality of sensors to perform analysis on the fluids collected at a subsurface location in a borehole.

US Patent:

7658226, Feb 9, 2010

Filed:

Oct 20, 2006

Appl. No.:

11/551310

Inventors:

Murtaza Ziauddin - Richmond TX, US
Bhavani Raghuraman - Lexington MA, US
Li Jiang - Ridgefield CT, US
Xuefei Sun - Plano TX, US
Sebastien Fremont - Montrouge, FR
Ballard Andrews - Wilton CT, US
Robert Schroeder - Newtown CT, US
Stephen Hill - Pearland TX, US
Mahmuda Afroz - El Cerrito CA, US
Frank Espinosa - Richmond TX, US
Michael Orlet - Houston TX, US
John Lovell - Houston TX, US
Steve Davies - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/27
E21B 47/10

US Classification:

16625001, 7315229, 7315231, 7315239, 166 66, 1662523, 166281, 166384

Abstract:

Although the methods have been described here for, and are most typically used for, hydrocarbon production, fluid diversion measurement systems and methods are described. One method includes inserting a tubular tubing having one more fluid injection ports into a wellbore, injecting a treatment fluid through the injection port, and determining differential flow of the treatment fluid at one or more wellbore based on measuring the concentration of at least one particular component of a wellbore fluid located in the annulus formed between the wellbore and tubular; and using the measured parameters in realtime to monitor, control, or both monitor and control diversion of the fluid.

US Patent:

7710000, May 4, 2010

Filed:

Aug 4, 2006

Appl. No.:

11/499332

Inventors:

Clive E. Hall - Middlesex, GB
Li Jiang - Ridgefield CT, US
Timothy G. J. Jones - Cottenham, GB
Andrew Meredith - Cambridge, GB
Nathan S. Lawrence - St. Neots, GB
Markus Pagels - Linton, GB

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

H01L 41/083
H01L 41/047

US Classification:

310322, 310334, 310365, 310366

Abstract:

The present invention, in one set of embodiments, provides methods and systems for integrating conducting diamond electrodes into a high power acoustic resonator. More specifically, but not by way of limitation, in certain embodiments of the present invention, diamond electrodes may be integrated into a high power acoustic resonator to provide a robust sensing device that may provide for acoustic cleaning of the electrodes and increasing the rate of mass transport to the diamond electrodes. The diamond electrodes may be used as working, reference or counter electrodes or a combination of two or more of such electrodes. In certain aspects, the high power acoustic resonator may include an acoustic horn for focusing acoustic energy and the diamond electrodes may be coupled with the acoustic horn.

US Patent:

7758734, Jul 20, 2010

Filed:

May 28, 2003

Appl. No.:

10/541568

Inventors:

Li Jiang - Ridgefield CT, US
Timothy Gareth John Jones - Cottenham, GB
Jonathan Webster Brown - Sugar Land TX, US
Andrew Gilbert - Aberdeen, GB

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

G01N 27/26
G01N 27/333
G01N 27/40

US Classification:

204409, 204412, 204415, 204416, 204418, 204419, 204424, 204431, 2057865, 205793, 2057945

Abstract:

An electrochemical sensor for measuring the amount of hydrogen sulphide or thiols in a fluid in a wellbore comprises a temperature- and pressure-resistant housing containing a flow path for the fluids. The fluids flow over one side of a gas permeable membrane made of zeolite or a suitable ceramic material, the other side of the membrane being exposed to a chamber containing a reaction solution which together with the hydrogen sulphide or thiols create a redox reaction resulting in an electrical current dependent upon the amount of hydrogen sulphide or thiols in the fluid.

US Patent:

7767461, Aug 3, 2010

Filed:

Jul 12, 2004

Appl. No.:

10/564939

Inventors:

Li Jiang - Ridgefield CT, US
Timothy Gareth John Jones - Cambridge, GB
Andrew Meredith - Cambridge, GB
Markus Pagels - Cambridge, GB
Amilra Prasanna De Silva - Belfast, GB

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

G01N 33/20

US Classification:

436 79, 436150, 422 8201

Abstract:

This invention relates to methods and apparatus for determination of ion concentrations, particularly in downhole water from hydrocarbon wells, aquifers etc. It is useful in a wide range of applications, including predicting the formation of scale and fingerprinting waters from different sources. More particularly, the invention relates to the use of ligands whose electronic configuration is altered by the binding of the scaling ions within a water sample. These alterations are detected, for example by electrochemical means, and are indicative of the concentration of scaling ions in the sample.

US Patent:

7804598, Sep 28, 2010

Filed:

Aug 4, 2006

Appl. No.:

11/499329

Inventors:

Clive E. Hall - Ashford, GB
Li Jiang - Ridgefield CT, US
Timothy G. J. Jones - Cottenham, GB
Gary J. Tustin - Sawston, GB

Assignee:

Schlumberger Technology Corportion - Ridgefield CT

International Classification:

G01N 21/55

US Classification:

356445

Abstract:

Embodiments of the present invention provide methods and systems for integrating optical interfacial elements with a high power acoustic resonator. More specifically, but not by way of limitation, in certain embodiments of the present invention, one or more optical interfacial elements may be integrated with a high power acoustic resonator to provide a robust sensing device that may provide for acoustic cleaning of the optical interfacial elements and/or combining optical and acoustic measurements made by the integrated system for analysis purposes. In certain aspects, the high power acoustic resonator may include an acoustic horn for focusing acoustic energy and the optical interfacial elements may be integrated with the acoustic horn.

US Patent:

7835003, Nov 16, 2010

Filed:

Dec 1, 2005

Appl. No.:

11/791905

Inventors:

Li Jiang - Newton MA, US
Timothy Gareth John Jones - Cottenham, GB

Assignee:

Schlumberger Technology Corporation - Cambridge MA

International Classification:

G01N 21/59

US Classification:

356436, 436528, 4352872

Abstract:

An optical sensor for pH is described using a cross-linked network of bisilanes to immobilize a pH sensitive chromophore to a surface potentially exposed to a high pressure, high temperature environment such as wellbore effluents at a downhole location.