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Class Information
Number: 175/59
Name: Boring or penetrating the earth > Processes > Sampling of earth formations > Retaining fluid or taking separate fluid sample
Description: Processes comprising the step of (1) maintaining the natural fluid content of the earth sample or (2) taking a discrete sample of the fluid occurring in the borehole or its surrounding earth formations.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8636064 Formation evaluation while drilling Jan. 28, 2014
8596384 Reducing differential sticking during sampling Dec. 3, 2013
8561698 Downhole fluid injection Oct. 22, 2013
8555966 Formation testing apparatus and methods Oct. 15, 2013
8453732 Apparatus to sample heavy oil from a subterranean formation Jun. 4, 2013
8444937 In-situ soil nitrate ion concentration sensor May. 21, 2013
8336622 Formation evaluation while drilling Dec. 25, 2012
8323921 Method and apparatus for environmental monitoring and bioprospecting Dec. 4, 2012
8276662 Systems and methods to filter and collect downhole fluid Oct. 2, 2012
8215391 Coiled tubing deployed single phase fluid sampling apparatus and method for use of same Jul. 10, 2012
8215390 Coiled tubing deployed single phase fluid sampling apparatus and method for use of same Jul. 10, 2012
8146660 Coiled tubing deployed single phase fluid sampling apparatus and method for use of same Apr. 3, 2012
8118097 Formation evaluation while drilling Feb. 21, 2012
8113293 Single packer structure for use in a wellbore Feb. 14, 2012
8056625 Formation evaluation while drilling Nov. 15, 2011
7967067 Coiled tubing deployed single phase fluid sampling apparatus Jun. 28, 2011
7938199 Measurement while drilling tool with interconnect assembly May. 10, 2011
7934569 Core stabilization May. 3, 2011
7878244 Apparatus and methods to perform focused sampling of reservoir fluid Feb. 1, 2011
7874356 Single packer system for collecting fluid in a wellbore Jan. 25, 2011
7845405 Formation evaluation while drilling Dec. 7, 2010
7841406 Formation fluid sampling apparatus and methods Nov. 30, 2010
7762328 Formation testing and sampling tool including a coring device Jul. 27, 2010
7717172 Methods and apparatus to sample heavy oil from a subteranean formation May. 18, 2010
7677330 Apparatus for in situ testing of a soil sample Mar. 16, 2010
7660672 Method and computer program product for drilling mud design optimization to maintain time-dependent stability of argillaceous formations Feb. 9, 2010
7654321 Formation fluid sampling apparatus and methods Feb. 2, 2010
7631705 Enhanced screen auger sampling system Dec. 15, 2009
7600580 Sealed core sample barrel Oct. 13, 2009
7484563 Formation evaluation system and method Feb. 3, 2009
7438135 Method of suspending, completing and working over a well Oct. 21, 2008
7410011 Method to determine the concentration of deuterium oxide in a subterranean formation Aug. 12, 2008
7395879 MWD formation tester Jul. 8, 2008
7367394 Formation evaluation while drilling May. 6, 2008
7222668 Sample extraction system for boreholes May. 29, 2007
7204309 MWD formation tester Apr. 17, 2007
7195063 Downhole sampling apparatus and method for using same Mar. 27, 2007
7178391 Insertion tube methods and apparatus Feb. 20, 2007
7178591 Apparatus and method for formation evaluation Feb. 20, 2007
7140436 Apparatus and method for controlling the pressure of fluid within a sample chamber Nov. 28, 2006
7124819 Downhole fluid pumping apparatus and method Oct. 24, 2006
7111685 Downhole sampling apparatus and method Sep. 26, 2006
7096976 Drilling formation tester, apparatus and methods of testing and monitoring status of tester Aug. 29, 2006
7093674 Drilling formation tester, apparatus and methods of testing and monitoring status of tester Aug. 22, 2006
7093676 Apparatus and methods for sponge coring Aug. 22, 2006
7090012 Method and apparatus for subsurface fluid sampling Aug. 15, 2006
7083009 Pressure controlled fluid sampling apparatus and method Aug. 1, 2006
7066281 Formation fluid sampling and hydraulic testing tool and packer assembly therefor Jun. 27, 2006
7004252 Multiple zone testing system Feb. 28, 2006
6964301 Method and apparatus for subsurface fluid sampling Nov. 15, 2005

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