The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6823950 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 30, 2004

Filed:

Dec. 03, 2002
Applicant:
Inventors:

William Henry von Eberstein, Jr., Slidell, LA (US);

George Herbert Mayo, Toomsuba, MS (US);

Mark Allen Weaver, Church Point, LA (US);

Eric van Oort, Mandeville, LA (US);

Ernest Benedict Kotara, Jr., Mandeville, LA (US);

Assignee:

Shell Oil Company, Houston, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 7/12 ; E21B 4/706 ;
U.S. Cl.
CPC ...
E21B 7/12 ; E21B 4/706 ;
Abstract

A method for addressing the problem known as formation breathing occurring during the drilling of a subsea well in an earth formation in performing a series of leak off tests to determine the earth formation fracture propagation pressure and the earth formation fracture reopen pressure and maintaining the hydrostatic pressure on the earth formation in a range between the fracture reopen pressure and the fracture propagation pressure.


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von Eberstein, Jr., William. (2004). Method for formation pressure control while drilling (U.S. Patent No. 6823950). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6823950

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