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Reel/Frame:	029659/0540			Pages:	9
		Recorded:	01/18/2013
Attorney Dkt #:	18012/001001
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 50

Patent #:	7044241	Issue Dt:	05/16/2006	Application #:	10297629	Filing Dt:	07/29/2003
Publication #:	US20040026126	Pub Dt:	02/12/2004
Title:	METHOD FOR DRILLING WITH CASING

Patent #:	7428927	Issue Dt:	09/30/2008	Application #:	10297633	Filing Dt:	08/05/2003
Publication #:	US20040060700	Pub Dt:	04/01/2004
Title:	CEMENT FLOAT AND METHOD FOR DRILLING AND CASING A WELLBORE WITH A PUMP DOWN CEMENT FLOAT

Patent #:	7370712	Issue Dt:	05/13/2008	Application #:	10468856	Filing Dt:	11/15/2004
Publication #:	US20050205305	Pub Dt:	09/22/2005
Title:	UNDER REAMER

Patent #:	7328742	Issue Dt:	02/12/2008	Application #:	10537771	Filing Dt:	12/20/2005
Publication #:	US20060151182	Pub Dt:	07/13/2006
Title:	SEAL CUP FOR A WELLBORE TOOL AND METHOD

Patent #:	7287584	Issue Dt:	10/30/2007	Application #:	10537778	Filing Dt:	01/10/2006
Publication #:	US20060102338	Pub Dt:	05/18/2006
Title:	ANCHORING DEVICE FOR A WELLBORE TOOL

Patent #:	7520343	Issue Dt:	04/21/2009	Application #:	10906200	Filing Dt:	02/08/2005
Publication #:	US20060021801	Pub Dt:	02/02/2006
Title:	RETRIEVABLE CENTER BIT

Patent #:	7475742	Issue Dt:	01/13/2009	Application #:	11279223	Filing Dt:	04/10/2006
Publication #:	US20070051538	Pub Dt:	03/08/2007
Title:	METHOD FOR DRILLING WITH CASING

Patent #:	7575061	Issue Dt:	08/18/2009	Application #:	11458294	Filing Dt:	07/18/2006
Publication #:	US20070056722	Pub Dt:	03/15/2007
Title:	WIRELINE ENTRY SUB AND METHOD OF USING

Patent #:	7647990	Issue Dt:	01/19/2010	Application #:	11461248	Filing Dt:	07/31/2006
Publication #:	US20070175665	Pub Dt:	08/02/2007
Title:	METHOD FOR DRILLING WITH A WELLBORE LINER

Patent #:	7637330	Issue Dt:	12/29/2009	Application #:	11461918	Filing Dt:	08/02/2006
Publication #:	US20070068677	Pub Dt:	03/29/2007
Title:	CASING BOTTOM HOLE ASSEMBLY RETRIEVAL PROCESS

Patent #:	7484559	Issue Dt:	02/03/2009	Application #:	11693639	Filing Dt:	03/29/2007
Publication #:	US20070158069	Pub Dt:	07/12/2007
Title:	METHOD FOR DRILLING AND CASING A WELLBORE WITH A PUMP DOWN CEMENT FLOAT

Patent #:	7757764	Issue Dt:	07/20/2010	Application #:	11743437	Filing Dt:	05/02/2007
Publication #:	US20070204993	Pub Dt:	09/06/2007
Title:	METHOD FOR DRILLING AND CASING A WELLBORE WITH A PUMP DOWN CEMENT FLOAT

Patent #:	7909109	Issue Dt:	03/22/2011	Application #:	11876566	Filing Dt:	10/22/2007
Publication #:	US20080041583	Pub Dt:	02/21/2008
Title:	ANCHORING DEVICE FOR A WELLBORE TOOL

Patent #:	7640984	Issue Dt:	01/05/2010	Application #:	11985218	Filing Dt:	11/14/2007
Publication #:	US20080223572	Pub Dt:	09/18/2008
Title:	METHOD FOR DRILLING AND CASING A WELLBORE WITH A PUMP DOWN CEMENT FLOAT

Patent #:	7721798	Issue Dt:	05/25/2010	Application #:	11995919	Filing Dt:	05/13/2008
Publication #:	US20080230216	Pub Dt:	09/25/2008
Title:	WIRELINE ENTRY SUB

Patent #:	7552778	Issue Dt:	06/30/2009	Application #:	12014000	Filing Dt:	01/14/2008
Publication #:	US20080110642	Pub Dt:	05/15/2008
Title:	SEAL CUP FOR A WELLBORE TOOL AND METHOD

Patent #:	7814972	Issue Dt:	10/19/2010	Application #:	12014001	Filing Dt:	01/14/2008
Publication #:	US20080196904	Pub Dt:	08/21/2008
Title:	WIRELINE ENTRY SUB

Patent #:	7779920	Issue Dt:	08/24/2010	Application #:	12125681	Filing Dt:	05/22/2008
Publication #:	US20090288839	Pub Dt:	11/26/2009
Title:	CONTROLLING BACKFLOW PRESSURE DURING RETRIEVAL OF BOTTOM HOLE ASSEMBLY

Patent #:	7845431	Issue Dt:	12/07/2010	Application #:	12125736	Filing Dt:	05/22/2008
Publication #:	US20090288886	Pub Dt:	11/26/2009
Title:	RETRIEVAL TOOL WITH SLIPS FOR RETRIEVING BOTTOM HOLE ASSEMBLY DURING CASING WHILE DRILLING OPERATIONS

Patent #:	7708077	Issue Dt:	05/04/2010	Application #:	12125781	Filing Dt:	05/22/2008
Publication #:	US20090288840	Pub Dt:	11/26/2009
Title:	RETRIEVAL OF BOTTOM HOLE ASSEMBLY DURING CASING WHILE DRILLING OPERATIONS

Patent #:	7604057	Issue Dt:	10/20/2009	Application #:	12125808	Filing Dt:	05/22/2008
Title:	INCREMENTAL U-TUBE PROCESS TO RETRIEVE OF BOTTOM HOLE ASSEMBLY DURING CASING WHILE DRILLING OPERATIONS

Patent #:	7886847	Issue Dt:	02/15/2011	Application #:	12126138	Filing Dt:	05/23/2008
Publication #:	US20090288821	Pub Dt:	11/26/2009
Title:	MONITORING FLOW RATES WHILE RETRIEVING BOTTOM HOLE ASSEMBLY DURING CASING WHILE DRILLING OPERATIONS

Patent #:	7798251	Issue Dt:	09/21/2010	Application #:	12126315	Filing Dt:	05/23/2008
Publication #:	US20090288841	Pub Dt:	11/26/2009
Title:	CIRCULATION SYSTEM FOR RETRIEVAL OF BOTTOM HOLE ASSEMBLY DURING CASING WHILE DRILLING OPERATIONS

Patent #:	7793729	Issue Dt:	09/14/2010	Application #:	12176763	Filing Dt:	07/21/2008
Publication #:	US20100012328	Pub Dt:	01/21/2010
Title:	GATE VALVE AND METHOD OF CONTROLLING PRESSURE DURING CASING-WHILE-DRILLING OPERATIONS

Patent #:	7775302	Issue Dt:	08/17/2010	Application #:	12184675	Filing Dt:	08/01/2008
Publication #:	US20100025120	Pub Dt:	02/04/2010
Title:	CASING SHOE AND RETRIEVABLE BIT ASSEMBLY

Patent #:	7845417	Issue Dt:	12/07/2010	Application #:	12184851	Filing Dt:	08/01/2008
Publication #:	US20100025113	Pub Dt:	02/04/2010
Title:	METHOD OF CIRCULATING WHILE RETRIEVING DOWNHOLE TOOL IN CASING

Patent #:	7784552	Issue Dt:	08/31/2010	Application #:	12238191	Filing Dt:	09/25/2008
Publication #:	US20090090508	Pub Dt:	04/09/2009
Title:	LINER DRILLING METHOD

Patent #:	8146672	Issue Dt:	04/03/2012	Application #:	12275396	Filing Dt:	11/21/2008
Publication #:	US20100126734	Pub Dt:	05/27/2010
Title:	METHOD AND APPARATUS FOR RETRIEVING AND INSTALLING A DRILL LOCK ASSEMBLY FOR CASING DRILLING

Patent #:	7624820	Issue Dt:	12/01/2009	Application #:	12284082	Filing Dt:	09/18/2008
Publication #:	US20090025981	Pub Dt:	01/29/2009
Title:	METHOD FOR DRILLING WITH CASING

Patent #:	8443906	Issue Dt:	05/21/2013	Application #:	12303844	Filing Dt:	02/03/2009
Publication #:	US20100206580	Pub Dt:	08/19/2010
Title:	TOOLS AND METHODS USEFUL WITH WELLBORE REVERSE CIRCULATION

Patent #:	7861781	Issue Dt:	01/04/2011	Application #:	12333051	Filing Dt:	12/11/2008
Publication #:	US20100147517	Pub Dt:	06/17/2010
Title:	PUMP DOWN CEMENT RETAINING DEVICE

Patent #:	7926590	Issue Dt:	04/19/2011	Application #:	12347443	Filing Dt:	12/31/2008
Publication #:	US20090107675	Pub Dt:	04/30/2009
Title:	METHOD OF LINER DRILLING AND CEMENTING UTILIZING A CONCENTRIC INNER STRING

Patent #:	7926578	Issue Dt:	04/19/2011	Application #:	12347610	Filing Dt:	12/31/2008
Publication #:	US20090101345	Pub Dt:	04/23/2009
Title:	LINER DRILLING SYSTEM AND METHOD OF LINER DRILLING WITH RETRIEVABLE BOTTOM HOLE ASSEMBLY

Patent #:	8230947	Issue Dt:	07/31/2012	Application #:	12399568	Filing Dt:	03/06/2009
Publication #:	US20100224413	Pub Dt:	09/09/2010
Title:	METHOD OF SELECTING A DRILLING MOTOR FOR A CASING DRILL STRING

Patent #:	8113301	Issue Dt:	02/14/2012	Application #:	12423481	Filing Dt:	04/14/2009
Publication #:	US20100258354	Pub Dt:	10/14/2010
Title:	JETTED UNDERREAMER ASSEMBLY

Patent #:	8176986	Issue Dt:	05/15/2012	Application #:	12491966	Filing Dt:	06/25/2009
Publication #:	US20100200236	Pub Dt:	08/12/2010
Title:	METHOD OF CIRCULATING WHILE RETRIEVING BOTTOM HOLE ASSEMBLY IN CASING

Patent #:	8281878	Issue Dt:	10/09/2012	Application #:	12554185	Filing Dt:	09/04/2009
Publication #:	US20110056703	Pub Dt:	03/10/2011
Title:	METHOD OF DRILLING AND RUNNING CASING IN LARGE DIAMETER WELLBORE

Patent #:	8186457	Issue Dt:	05/29/2012	Application #:	12561416	Filing Dt:	09/17/2009
Publication #:	US20110061939	Pub Dt:	03/17/2011
Title:	OFFSHORE CASING DRILLING METHOD

Patent #:	8281868	Issue Dt:	10/09/2012	Application #:	12701404	Filing Dt:	02/05/2010
Publication #:	US20110192614	Pub Dt:	08/11/2011
Title:	TORQUE TRANSMITTING LOAD SHOULDER

Patent #:	8439113	Issue Dt:	05/14/2013	Application #:	12776024	Filing Dt:	05/07/2010
Publication #:	US20100282463	Pub Dt:	11/11/2010
Title:	Pump In Reverse Outliner Drilling System

Patent #:	8678108	Issue Dt:	03/25/2014	Application #:	12893923	Filing Dt:	09/29/2010
Title:	TORQUE TRANSMITTING ELASTOMERIC ELEMENT IN CASING DRILLING DRILL LOCK ASSEMBLY

Patent #:	8783368	Issue Dt:	07/22/2014	Application #:	12985107	Filing Dt:	01/05/2011
Publication #:	US20120168178	Pub Dt:	07/05/2012
Title:	WELL TOOL WITH SHEARABLE COLLET

Patent #:	8985227	Issue Dt:	03/24/2015	Application #:	12987222	Filing Dt:	01/10/2011
Publication #:	US20120175133	Pub Dt:	07/12/2012
Title:	DAMPERED DROP PLUG

Patent #:	8733474	Issue Dt:	05/27/2014	Application #:	13007416	Filing Dt:	01/14/2011
Publication #:	US20120181044	Pub Dt:	07/19/2012
Title:	FLOW CONTROL DIVERTER VALVE

Patent #:	9091148	Issue Dt:	07/28/2015	Application #:	13032802	Filing Dt:	02/23/2011
Publication #:	US20110203794	Pub Dt:	08/25/2011
Title:	Apparatus and Method for Cementing Liner

Patent #:	8851167	Issue Dt:	10/07/2014	Application #:	13041079	Filing Dt:	03/04/2011
Publication #:	US20120222861	Pub Dt:	09/06/2012
Title:	Mechanical Liner Drilling Cementing System

Patent #:	9181792	Issue Dt:	11/10/2015	Application #:	13333027	Filing Dt:	12/21/2011
Publication #:	US20130087385	Pub Dt:	04/11/2013
Title:	METHOD FOR DETECTING AND MITIGATING DRILLING INEFFICIENCIES

Patent #:	8807244	Issue Dt:	08/19/2014	Application #:	13399722	Filing Dt:	02/17/2012
Publication #:	US20120211279	Pub Dt:	08/23/2012
Title:	METHOD AND APPARATUS FOR STRENGTHENING A WELLBORE

Patent #:	8881814	Issue Dt:	11/11/2014	Application #:	13461342	Filing Dt:	05/01/2012
Publication #:	US20120279705	Pub Dt:	11/08/2012
Title:	LINER CEMENTATION PROCESS AND SYSTEM

Patent #:	9057253	Issue Dt:	06/16/2015	Application #:	13529400	Filing Dt:	06/21/2012
Publication #:	US20120325499	Pub Dt:	12/27/2012
Title:	LINER TOP PACKER FOR LINER DRILLING

Assignor

TESCO CORPORATION

Exec Dt:

06/04/2012

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION

300 SCHLUMBERGER DRIVE

SUGAR LAND, TEXAS 77478

Correspondence name and address
	JEFFREY S. BERGMAN
	909 FANNIN
	SUITE 3500
	HOUSTON, TX 77010

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