Gang Li

US Patent:

20120152010, Jun 21, 2012

Filed:

Aug 31, 2009

Appl. No.:

13/392301

Inventors:

Gang Li - Houston TX, US
Kenneth E. Williams - Houston TX, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

E21B 49/00
G01V 5/00

US Classification:

7315202, 250256

Abstract:

A method and apparatus for determining a stress field in a subterranean formation include deploying a stress measurement tool on a tubular string, opening at least three fractures in three different radial directions in the subterranean formation, and closing the at least three fractures. The at least three fractures are reopened while measuring stress and strain conditions. From the reopening, a tangential stress component for each of the at least three fractures is determined. From the tangential stress components and radial directions of the at least three fractures, the stress field of the subterranean formation is determined.

US Patent:

20220252151, Aug 11, 2022

Filed:

Apr 19, 2022

Appl. No.:

17/723805

Inventors:

- Baltimore MD, US
Gang LI - Halethorpe MD, US
Meilin YU - Baltimore MD, US
Xuefeng WANG - Scott Depot WV, US

International Classification:

F16H 61/664
F16H 59/40
F16H 59/42
F16H 3/76
F16H 59/70

Abstract:

A tidal current energy converter including an infinitely variable transmission (IVT) control system and a hybrid vertical axis wind (or water) turbine (VAWTs) apparatus. The hybrid VAWT apparatus includes a modified-Savonius (MS) rotor in the central region and a straight bladed H-type Darrieus rotor in the surrounding annular region. The IVT control system includes a nonlinear closed-loop control combined with an integral time-delay feedback control to adjust a speed ratio of the IVT. A speed ratio control for an IVT system involves a forward speed controller and/or a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.

US Patent:

20220177912, Jun 9, 2022

Filed:

Apr 13, 2020

Appl. No.:

17/601812

Inventors:

- Houston TX, US
Gang Li - Houston TX, US

Assignee:

The Methodist Hospital - Houston TX

International Classification:

C12N 15/85
A61K 35/15
C07K 16/30
C07K 14/705
A61P 35/00

Abstract:

Embodiments of the present disclosure pertain to modified antigen presenting cells that include a recombinant protein appended onto a surface of the antigen presenting cells. The recombinant protein can include: an ectodomain positioned on the surface; a transmembrane domain with a region embedded in the cell membrane; an antigen presenting cell recruiting domain that directs the cells towards the cancer cells; and an antigen presenting cell activator that activates or licenses the antigen presenting cells. Additional embodiments of the present disclosure pertain to methods of expressing the recombinant proteins on antigen presenting cells and utilizing the modified antigen presenting cells for treating various cancers in various subjects. Further embodiments of the present disclosure pertain to nucleotide-containing carriers for expressing the recombinant proteins of the present disclosure in antigen presenting cells.

US Patent:

20230130072, Apr 27, 2023

Filed:

Oct 21, 2022

Appl. No.:

18/048563

Inventors:

- Baltimore MD, US
Gang LI - Halethorpe MD, US

International Classification:

F16H 35/02

Abstract:

The present disclosure describes innovations to improve the use of noncircular gear pairs in a transmission, e.g., an infinitely variable transmission. The noncircular gear pair includes a first noncircular gear with a first pitch curve; and a second noncircular gear with a second pitch curve. The first pitch curve includes a plurality of elliptical portions, and a curvature of the first pitch curve is positive along the entire first pitch curve; and wherein the second pitch curve is a conjugate of the first pitch curve.

US Patent:

20210400628, Dec 23, 2021

Filed:

Oct 2, 2019

Appl. No.:

16/590716

Inventors:

- Houston TX, US
Gang Li - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

H04W 68/00
H04W 24/02
H04W 36/00
H04W 76/30
H04W 76/27
H04L 1/18

Abstract:

A method of testing mechanical properties of an earth formation can include disposing a probe in a wellbore, impacting the probe against a wall of the wellbore, and measuring a parameter related to at least one of a displacement, displacement rate, strain, and strain rate, of at least one of the probe and the formation. Another method can include disposing a probe and a known material in a wellbore, and after the disposing, penetrating the known material with the probe. Another method can include disposing a probe in a wellbore, measuring a displacement of the probe into a wall of the wellbore while measuring a load applied to the probe, and applying fluid pressure to the formation via the probe.

US Patent:

20150377019, Dec 31, 2015

Filed:

Mar 21, 2013

Appl. No.:

14/768069

Inventors:

- Houston TX, US
Gang Li - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 49/00
E21B 7/06
E21B 43/11
E21B 43/26

Abstract:

A method of testing mechanical properties of an earth formation can include disposing a probe in a wellbore, impacting the probe against a wall of the wellbore, and measuring a parameter related to at least one of a displacement, displacement rate, strain, and strain rate, of at least one of the probe and the formation. Another method can include disposing a probe and a known material in a wellbore, and after the disposing, penetrating the known material with the probe. Another method can include disposing a probe in a wellbore, measuring a displacement of the probe into a wall of the wellbore while measuring a load applied to the probe, and applying fluid pressure to the formation via the probe.

US Patent:

20150120595, Apr 30, 2015

Filed:

Sep 19, 2014

Appl. No.:

14/491267

Inventors:

- Reston VA, US
Gang LI - Herndon VA, US
Yiyun HUANG - Oak Hill VA, US

International Classification:

G06Q 10/10
G06Q 50/20

US Classification:

705327

Abstract:

A system and associated methods are provided for communication and collaboration in an educational environment. Integrated modules are provided for discussions, document sharing, photo sharing, events and invitations, and sign-ups. The system comprises a database adapted to allow dynamic formation of groups associated with activities or courses and notification of members of those groups regarding posting of information.

US Patent:

20150063650, Mar 5, 2015

Filed:

Aug 30, 2013

Appl. No.:

14/015746

Inventors:

- Houston TX, US
Syed Muhammad Farrukh Hamza - Humble TX, US
Gang Li - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G06T 17/00
G01N 33/24
G01N 9/00
G06K 9/00

US Classification:

382109

Abstract:

The present disclosure relates to identifying potential fracture treatment locations in a rock formation for oil and/or gas production based on production potential. One example method includes receiving internal imaging data of a core sample of a rock formation; generating a digital core sample model of the structure of the core sample based on the internal imaging data; analyzing the core sample model to determine the density distribution of a deposit in the core sample; and determining a production potential value from the density distribution of the deposit.