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Class Information
Number: 73/152.25
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Fluid flow measuring or fluid analysis > With sampling > From formation wall > With a filter
Description: Subject matter including a barrier having interstices, pores, or micropores through which at least part of the fluid flows but which traps some components of the fluid, usually particles.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7603897 |
Downhole probe assembly |
Oct. 20, 2009 |
| 7363829 |
Drill cutting sampler |
Apr. 29, 2008 |
| 7219541 |
Method and apparatus for downhole fluid analysis for reservoir fluid characterization |
May. 22, 2007 |
| 7155967 |
Formation testing apparatus and method |
Jan. 2, 2007 |
| 7111685 |
Downhole sampling apparatus and method |
Sep. 26, 2006 |
| 6871532 |
Method and apparatus for pore pressure monitoring |
Mar. 29, 2005 |
| 6865933 |
Multi-level monitoring well |
Mar. 15, 2005 |
| 6543276 |
Oil well bore hole filter cake breaker fluid test apparatus and method |
Apr. 8, 2003 |
| 6101871 |
In-ground vapor monitoring device and method |
Aug. 15, 2000 |
| 5686299 |
Method and apparatus for determining nutrient stimulation of biological processes |
Nov. 11, 1997 |
| 5641642 |
In situ biofilm coupon device |
Jun. 24, 1997 |
| 4951749 |
Earth formation sampling and testing method and apparatus with improved filter means |
Aug. 28, 1990 |
| 4246782 |
Tool for testing earth formations in boreholes |
Jan. 27, 1981 |
| 3952588 |
Apparatus for testing earth formations |
Apr. 27, 1976 |
| 3934468 |
Formation-testing apparatus |
Jan. 27, 1976 |
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