Qiang Fu

US Patent:

20130067999, Mar 21, 2013

Filed:

Sep 12, 2012

Appl. No.:

13/611523

Inventors:

Liang Xu - Houston TX, US
Qiang Fu - Houston TX, US

Assignee:

Multi-Chem Group, LLC - San Angelo TX

International Classification:

C09K 8/584
G01N 13/02
G01N 13/00

US Classification:

73 6451, 73 5301, 73 6448, 7315218

Abstract:

A method of determining the suitability of a surfactant for use in a formation can include sampling water in the formation, providing at least two surfactants, and mixing each of the surfactants with the formation water to form surfactant/water samples. The method can further include determining the solubility of each surfactant with the formation water, comparing the solubility of each surfactant with the other surfactant, and assigning a solubility performance value for each surfactant based on its solubility in the formation water sample compared to the other surfactant.

US Patent:

20170190952, Jul 6, 2017

Filed:

Mar 22, 2017

Appl. No.:

15/465787

Inventors:

- San Angelo TX, US
Nathan Darrell Davis - Conroe TX, US
Funian Zhao - Tomball TX, US
Qiang Fu - Houston TX, US

International Classification:

C09K 8/54
F16L 58/04
C23F 11/14

Abstract:

Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions.

US Patent:

20160215198, Jul 28, 2016

Filed:

May 5, 2014

Appl. No.:

15/025475

Inventors:

- San Angelo TX, US
Nathan Darrell Davis - Conroe TX, US
Funian Zhao - Tomball TX, US
Qiang Fu - Houston TX, US

International Classification:

C09K 8/54
C09K 8/40
C09K 8/035

Abstract:

Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions.

US Patent:

20150275627, Oct 1, 2015

Filed:

Mar 27, 2014

Appl. No.:

14/228152

Inventors:

- Houston TX, US
Qiang FU - Houston TX, US
Jayant RANE - Kingwood TX, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

E21B 41/00
G01N 30/96

Abstract:

A method is disclosed for determining a first concentration of a first component in an aqueous solution, the surface tension of which is altered by the presence of the first component. The method can include identifying a second concentration of at least one second component in the aqueous solution. The at least one second component can also after the surface tension of the aqueous solution. The method can further include comparing a plurality of dynamic surface tension measurements of each of a plurality of aqueous test solutions with at least one dynamic surface tension measurement of the aqueous solution to determine the first concentration. The plurality of aqueous test solutions can include the first component at a plurality of concentrations and the at least one second component at the second concentration.