Jing Li

US Patent:

8497673, Jul 30, 2013

Filed:

Sep 28, 2009

Appl. No.:

12/567961

Inventors:

Tsili Wang - Katy TX, US
Jun Zhang - Katy TX, US
Jing Li - Sugar Land TX, US
Stephen D Bonner - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01P 3/48
G01P 3/54

US Classification:

324166, 324339, 324342, 324338, 343756, 343719, 343861

Abstract:

A logging while drilling tool includes a directional resistivity antenna and an antenna shield having. The shield has at least one slot having at least one electrically open end formed therein. The antenna shield may include a base portion and a plurality of spaced apart fingers extending away from the base portion such that the finger ends are electrically isolated from the tool body and from one another. The antenna shield may alternatively include a plurality of spaced apart plates that are electrically isolated from the tool body and from one another. These antenna shields have been found to provide suitable physical protection for sensitive antenna components while at the same time being substantially transparent to both z-mode and x-mode electromagnetic waves.

US Patent:

8536871, Sep 17, 2013

Filed:

Nov 2, 2010

Appl. No.:

12/917952

Inventors:

Jing Li - Sugar Land TX, US
Tsili Wang - Katy TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 3/00
G01V 3/18

US Classification:

324338, 324340

Abstract:

A method for correcting subterranean resistivity measurements to account for tool bending includes processing at least one coupling component and at least one cross-coupling component in combination with a tool bending angle. Such processing may, for example, remove one or more coupling components from a cross-coupling component. Removal of the coupling component(s) tends to increase the sensitivity of directional resistivity measurements to remote boundaries.

US Patent:

20080007421, Jan 10, 2008

Filed:

Mar 9, 2007

Appl. No.:

11/684386

Inventors:

Ce Liu - Sugar Land TX, US
Jing Li - Houston TX, US

Assignee:

UNIVERSITY OF HOUSTON - Houston TX

International Classification:

G01V 3/00

US Classification:

340853300

Abstract:

A system for transmitting measurement-while-drilling (MWD) data from at least one downhole device positioned within a borehole containing drilling mud to at least one surface device, comprising a downhole tool positioned within the borehole, a plurality of wireless MEMS radio units, wherein the MEMS radio units are selectively positioned within the borehole at selected distances to create a relay system between the downhole device and the surface device, and wherein data from the downhole device is transmitted through the relay system of MEMS radio units to the surface device.

US Patent:

20100305862, Dec 2, 2010

Filed:

Jun 2, 2009

Appl. No.:

12/476868

Inventors:

Jing Li - Sugar Land TX, US

Assignee:

Smith International, Inc. - Houston TX

International Classification:

G01V 3/30
G06F 19/00

US Classification:

702 7, 324338

Abstract:

A compensated resistivity logging while drilling tool having axially asymmetrically spaced transmitters is configured to provide compensated resistivity measurements. In one exemplary embodiment, the tool includes first and second compensating transmitters, preferably deployed axially symmetrically between first and second spaced receivers. The tool further includes a plurality of transmitters deployed axially asymmetrically with respect to the receivers, e.g., on one axial side of the receivers. The compensating transmitters are configured to acquire a borehole compensation that may be subtracted from conventional phase and attenuation measurements.

US Patent:

20110221443, Sep 15, 2011

Filed:

Aug 11, 2009

Appl. No.:

13/128676

Inventors:

Michael S. Bittar - Houston TX, US
Jing Li - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G01V 3/10

US Classification:

324339

Abstract:

Disclosed dielectric logging tools and methods employ three or more receive horn antennas positioned between at least two transmit antennas, which can also be horn antennas. The logging tools can operate in the range between 100 MHz and 10 GHz to provide logs of formation permittivity, formation conductivity, standoff distance, and electrical properties of material in the standoff gap. Logs of water-saturated porosity and/or oil movability can be readily derived. The presence of additional receive antennas offers a significantly extended operating range, additional depths of investigation, increased measurement accuracy, and further offers compensation for tool standoff and mudcake effects. In both wireline and logging while drilling embodiments, at least some disclosed dielectric logging tools employ a set of three axially-spaced receive antennas positioned between pairs of axially-spaced transmit antennas. At least some disclosed methods employ absolute amplitude and phase measurements in response to alternate firings of the transmit antennas.

US Patent:

20110251794, Oct 13, 2011

Filed:

Nov 23, 2009

Appl. No.:

13/061759

Inventors:

Michael S. Bittar - Houston TX, US
Jing Li - Pearland TX, US
Stephen A. Zannoni - Houston TX, US

Assignee:

Halliburton Energy Seervices, Inc. - Houston TX

International Classification:

G01V 3/12
G06F 19/00

US Classification:

702 11

Abstract:

Logging tools and methods for obtaining a three-dimensional (3D) image of the region around a borehole. In at least some embodiments, a 3D imaging tool rotates, transmitting pulses that are approximately a nanosecond long and measuring the time it takes to receive reflections of these pulses. Multiple receivers are employed to provide accurate triangulation of the reflectors. In some cases, multiple transmitters are employed to obtain compensated measurements, i.e., measurements that compensate for variations in the receiver electronics. Because reflections occur at boundaries between materials having different dielectric constants, the 3D imaging tool can map out such boundaries in the neighborhood of the borehole. Such boundaries can include: the borehole wall itself, boundaries between different formation materials, faults or other discontinuities in a formation, and boundaries between fluids in a formation. Depending on various factors, the size of the borehole neighborhood mapped out can be as large as 1 meter.

US Patent:

20110308859, Dec 22, 2011

Filed:

May 26, 2011

Appl. No.:

13/116069

Inventors:

Michael S. BITTAR - Houston TX, US
Jing LI - Pearland TX, US
Shanjun LI - Katy TX, US
Michael D. FINKE - Cypress TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 47/02

US Classification:

175 45

Abstract:

Nearby conductors such as pipes, well casing, etc., are detectable from within a borehole filled with an oil-based fluid. At least some method embodiments provide a current flow between axially-spaced conductive bridges on a drillstring. The current flow disperses into the surrounding formation and causes a secondary current flow in the nearby conductor. The magnetic field from the secondary current flow can be detected using one or more azimuthally-sensitive antennas. Direction and distance estimates are obtainable from the azimuthally-sensitive measurements, and can be used as the basis for steering the drillstring relative to the distant conductor. Possible techniques for providing current flow in the drillstring include imposing a voltage across an insulated gap or using a toroid around the drillstring to induce the current flow.

US Patent:

20110309836, Dec 22, 2011

Filed:

May 12, 2011

Appl. No.:

13/106032

Inventors:

Michael S. BITTAR - Houston TX, US
Jing Li - Pearland TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G01V 3/26

US Classification:

324339

Abstract:

Downhole tools and techniques acquire information regarding nearby conductors such as pipes, well casing, and conductive formations. At least some method embodiments provide a current flow along a drill string in a borehole. The current flow disperses into the surrounding formation and causes a secondary current flow in the nearby conductor. The magnetic field from the secondary current flow can be detected using one or more azimuthally-sensitive antennas. Direction and distance estimates may be obtainable from the azimuthally-sensitive measurements, and can be used as the basis for steering the drillstring relative to the distant conductor. Possible techniques for providing current flow in the drillstring include imposing a voltage across an insulated gap or using a toroid around the drillstring to induce the current flow.