Method and apparatus for taking an undisturbed core sample

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5253720
SERIAL NO

07716664

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The invention is a coring device which has features to seal off from the well fluids prior to taking of the specimen. The apparatus can be hydraulically or pneumatically actuated to move an inner string which is connected to a core barrel. Prior to moving the core barrel, an outer tube is sealingly pushed into the formation. Once the outer tube has been set into the formation, the inner tube drives the core barrel into the formation, leaving behind a rabbit. A clam shell is located at the forward end which stays open as the core barrel is driven into the formation and closes as the core barrel is withdrawn into the outer tube to retain the core. The pneumatic or hydraulic pressure continues to be applied to the inner string as the core barrel is withdrawn into the outer tube. Upon full retraction of the core barrel into the outer tube, a ball valve is actuated to seal off the core barrel. At that time, the hydraulic or pneumatic pressure is removed and the apparatus is pulled to the surface. The core barrel has a venting feature to allow any gas in the core barrel to escape as the core barrel fills with the core sample.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EVI CHERRINGTON ENVIRONMENTAL, INC.HOUSTON, TX0

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aumann, James T Salt Lake City, UT 15 270
Karlsson, Haraldur Kingwood, TX 7 493
Radford, Steven R South Jordan, UT 85 1704

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EASTMAN CHRISTENSEN COMPANY (5)
* 4552229 Externally powered core catcher 9 1983
* 4553613 Hydraulic lift inner barrel in a drill string coring tool 7 1983
* 4605075 Shrouded core catcher 16 1984
* 4606416 Self activating, positively driven concealed core catcher 19 1984
* 4607710 Cammed and shrouded core catcher 14 1984
 
Other [Check patent profile for assignment information] (2)
* 4350005 Fruit picker 3 1981
* 4669554 Ground water monitoring device and method 50 1985
 
Phillips Petroleum Company (1)
* 4335622 Soil gas probe 21 1980
 
MINING TOOLS,INC.DIVISION OF SMITH INTERNATIONAL, INC. (1)
* 4356873 Cutter mounting and apparatus and method for a drill bit 29 1980
 
C. KEITH THOMPSON (1)
* 4310057 Apparatus for extracting subterranean gas samples 49 1980
 
NORWEGIAN GEOTECHNICAL INSTITUTE, A CORP. OF NORWAY (1)
* 4518050 Rotating double barrel core sampler 21 1983
 
HANDLEY, JAMES P. (1)
* 4807707 Sampling apparatus and method 47 1987
 
TOTAL FINA ELF (1)
* 2002/0197,174 Electrical pump, and method for using plurality of submersible electrical pumps for well completion 0 2002
 
K-V Associates, Inc. (1)
* 4804050 Method of underground fluid sampling 58 1987
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
GE HEALTHCARE BIO-SCIENCES CORP. (2)
* 7059207 Motor driven sampling apparatus for material collection 4 2003
* 2005/0066,751 Motor driven sampling apparatus for material collection 1 2003
 
REEDHYCALOG, L.P. (1)
* 6009960 Coring tool 9 1998
 
NATIONAL OILWELL VARCO, L.P. (2)
9816337 Full closure core catcher 0 2011
9441434 Pressure core barrel for retention of core fluids and related method 0 2014
 
JAPAN OIL, GAS AND METALS NATIONAL CORPORATION (5)
6216804 Apparatus for recovering core samples under pressure 24 1998
6378631 Apparatus for recovering core samples at in situ conditions 20 2000
6305482 Method and apparatus for transferring core sample from core retrieval chamber under pressure for transport 16 2000
6230825 Apparatus for recovering core samples under pressure 11 2000
6659204 Method and apparatus for recovering core samples under pressure 22 2001
 
BAKER HUGHES INCORPORATED (7)
* 5568838 Bit-stabilized combination coring and drilling system 128 1994
* 6006844 Method and apparatus for simultaneous coring and formation evaluation 61 1996
6719070 Apparatus and methods for sponge coring 9 2000
7093676 Apparatus and methods for sponge coring 1 2003
7004265 Apparatus and methods for sponge coring 3 2005
7234547 Apparatus and methods for sponge coring 3 2006
7231991 Apparatus and methods for sponge coring 2 2006
 
QCS TECHNOLOGIES (1)
9506307 High pressure coring assembly and method 1 2012
 
J. I. Livingstone Enterprises Ltd. (2)
8757293 Air hammer coring apparatus and method 0 2008
* 2010/0084,193 AIR HAMMER CORING APPARATUS AND METHOD 2 2008
 
LONGYEAR TM, INC. (10)
* 8333255 High productivity core drilling system 8 2008
* 2010/0012,383 HIGH PRODUCTIVITY CORE DRILLING SYSTEM 11 2008
8869918 Core drilling tools with external fluid pathways 4 2010
* 2011/0083,901 CORE DRILLING TOOLS WITH EXTERNAL FLUID PATHWAYS 5 2010
9359847 High productivity core drilling system 0 2012
9528337 Up-hole bushing and core barrel head assembly comprising same 0 2013
9234398 Core drilling tools with retractably lockable driven latch mechanisms 1 2013
9399898 Core drilling tools with retractably lockable driven latch mechanisms 2 2014
9328608 Driven latch mechanism 1 2014
9689222 Core drilling tools with external fluid pathways 0 2014
* Cited By Examiner