Hector Sanchez

US Patent:

8083011, Dec 27, 2011

Filed:

Sep 29, 2008

Appl. No.:

12/239915

Inventors:

Harold A. Sreshta - Conroe TX, US
Hector Adrian Sanchez - Houston TX, US
Eric F. Drake - Galveston TX, US
Neerali Janubhai Desai - Houston TX, US

International Classification:

E21B 17/04
E21B 17/046

US Classification:

1753252, 1753254

Abstract:

A turbine matrix sleeve in accordance with the invention includes an inner cylindrical structure made up of a first material. The inner cylindrical structure may include multiple blades and multiple channels running between the blades along an outside diameter thereof. The inner cylindrical structure further includes threads, such as right-hand or left-hand threads, on an outer surface thereof. An outer layer, made up of a second material different from the first material, is integrally bonded to the threads. This outer layer may be optionally embedded with hardened inserts or buttons, such as PDC inserts, diamond inserts, TSP inserts, or the like. The threaded surface on the inner cylindrical structure significantly improves the bond between the outer layer and the inner cylindrical structure and creates a mechanical lock therebetween.

US Patent:

20120024606, Feb 2, 2012

Filed:

Jul 29, 2010

Appl. No.:

12/845815

Inventors:

Dimitrios Pirovolou - Rio de Janeiro, BR
Sam Ahmad Zamanian - Sugar Land TX, US
Hector Arismendi Sanchez - Sugar Land TX, US

International Classification:

E21B 7/04
G06G 7/48

US Classification:

175 61, 703 10

Abstract:

A system and a method for directional drilling may generate a model of steering behavior which may be used to estimate a position and an orientation of the drill bit during directional drilling. The estimated position and the estimated orientation may be compared to the well plan to determine desired drilling behavior, and the desired drilling behavior may be used to determine a recommended toolface orientation and/or recommended intervals of sliding and rotating to conform the directional drilling to the well plan.