Sergio A Leonardi, Age 5522330 Bridgestone Ridge Dr, Spring, TX 77388

8146654, Apr 3, 2012

Jun 18, 2007

12/306242

James R. Bragg - Houston TX, US
Joseph P. Lederhos - Houston TX, US
Sergio A. Leonardi - Pearland TX, US
Scott E. Hommema - Pearland TX, US
Amy L. Chen - Cypress TX, US
Shan H. Yang - Sugar Land TX, US

ExxonMobil Upstream Research Company - Houston TX

E21B 33/138
E21B 43/22
E21B 43/24
E21B 47/00
E21B 47/10

16625001, 166263, 166270, 1662721, 166288, 166294, 166302, 166303, 166304, 507203, 507904

A waxy oil-external emulsion is provided for injection into a selected zone of a subsurface formation. The selected zone is typically a high permeability zone. The emulsion generally comprises oil, added wax, and water. The emulsion may also include an emulsifying agent and a solvent. The emulsion is formulated to be a liquid at a temperature greater than a targeted temperature in the subsurface formation, but a solid at the targeted temperature. The targeted temperature is typically the maximum operating temperature for the formation. A method of formulating the emulsion is also provided. Further, a method of plugging a high permeability zone using the emulsion is disclosed.

8584749, Nov 19, 2013

Nov 4, 2011

13/289760

Andrey A. Troshko - Pearland TX, US
Sergio A. Leonardi - Pearland TX, US
David P. Yale - Milford NJ, US

ExxonMobil Upstream Research Company - Houston TX

E21B 43/00

166268, 166369, 166 7515

Methods for hydrocarbon recovery from a subsurface formation include removing a mixture comprising hydrocarbons and particulate solids from a first formation. At least a portion of the hydrocarbons are separated from the particulate solids. The particulate solids are separated into a plurality of streams. A mixed slurry comprising a first portion of the plurality of streams is injected through a first pipe into the first formation. A waste stream comprising a second portion of the plurality of streams is injected through a second pipe into a second formation. The first formation and the second formation lie in a substantially vertical line.

2009021, Aug 27, 2009

Oct 17, 2006

12/086313

James R. Bragg - Houston TX, US
Robert D. Kaminsky - Houston TX, US
Sergio A. Leonardi - Pearland TX, US

E21B 43/16
E21B 43/22
C09K 8/82

166275, 166268, 507202

An improved method of producing hydrocarbons from a subterranean formation in which a solids-stabilized emulsion (SSE) is formed, the SSE comprising oil as a first liquid, droplets of a second liquid suspended in the oil, and solid particles that are insoluble in both the oil and the second liquid at the conditions of the subterranean formation. The SSE with dissolved gas is injected into the subterranean formation as a drive fluid, and at least a portion of the SSE is placed into one or more area of the subterranean formation having an in situ pressure sufficiently lower than the selected partial pressure to permit evolution of at least a portion of the gas from the oil. Furthermore, a method of making the foamy SSE is also provided.

2012014, Jun 14, 2012

Feb 21, 2012

13/401570

James R. Bragg - Houston TX, US
Joseph P. Lederhos - Houston TX, US
Sergio A. Leonardi - Pearland TX, US
Scott E. Hommema - Pearland TX, US
Amy L. Chen - Cypress TX, US
Shan H. Yang - Houston TX, US

C09K 8/86

507203

A waxy oil-external emulsion is provided for injection into a selected zone of a subsurface formation. The selected zone is typically a high permeability zone. The emulsion generally comprises oil, added wax, and water. The emulsion may also include an emulsifying agent and a solvent. The emulsion is formulated to be a liquid at a temperature greater than a targeted temperature in the subsurface formation, but a solid at the targeted temperature. The targeted temperature is typically the maximum operating temperature for the formation. A method of formulating the emulsion is also provided. Further, a method of plugging a high permeability zone using the emulsion is disclosed.

2012032, Dec 27, 2012

May 23, 2012

13/479098

David P. Yale - Milford NJ, US
Sergio A. Leonardi - Pearland TX, US

E21B 43/18
E21B 43/30

16625001, 166 52

Methods and systems for recompacting a hydrocarbon reservoir to prevent override of a fill material are provided. An exemplary method includes detecting a slurry override condition and reducing a pressure within the reservoir so as to reapply a stress from an overburden.

2013015, Jun 20, 2013

Oct 25, 2012

13/660922

Somnath Sinha - Houston TX, US
Edward M. Braun - Sugar Land TX, US
Quinn R. Passey - Kingwood TX, US
Sergio A. Leonardi - Pearland TX, US
Timothy E. Zirkle - Houston TX, US
Ryan A. Kudva - Manvel TX, US

G01N 15/08

73 38

A calibration standard or check plug provides calibration standards in the permeability range of 10-10,000 nanoDarcy. The check plug is of similar exterior dimensions to a core sample that would be used with existing permeameters. The check plug is constructed from an impermeable material that is insensitive to moisture. The check plug has one or more channels of known diameter from which the permeability may be calculated. Methods for use thereof and methods of manufacture thereof are also disclosed.

2013024, Sep 19, 2013

Sep 29, 2011

13/989032

David P. Yale - Katy TX, US
Andrey A. Troshko - Pearland TX, US
Sergio A. Leonardi - Pearland TX, US
Neal L. Adair - Sugar land TX, US

E21B 43/267

1663051, 166 53, 166369

An embodiment of the present techniques provides a method of injecting a particulate mixture into a target location. The method includes forming a mixture of at least two sources of particles with different size distributions wherein the mixture of solids has a permeability in a predefined range. A water content of the mixture is varied to control the rheology of the mixture. The particles are injected through one or more pipes into a target location.