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Class Information
Number: 175/48
Name: Boring or penetrating the earth > With signaling, indicating, testing or measuring > Measuring or indicating drilling fluid (1) pressure, or (2) rate of flow
Description: Subject matter relating to a drilling fluid system forming a part of the boring means and a step or means to (1) measure or indicate the pressure of the drilling fluid or (2) measure or indicate the rate of flow of said drilling fluid at a specified location in said system.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7395878 |
Drilling system and method |
Jul. 8, 2008 |
| 7383102 |
Slug flow protection system |
Jun. 3, 2008 |
| 7367411 |
Drilling system and method |
May. 6, 2008 |
| 7363988 |
System and method for processing and transmitting information from measurements made while drilling |
Apr. 29, 2008 |
| 7357197 |
Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface |
Apr. 15, 2008 |
| 7343983 |
Method and apparatus for isolating and testing zones during reverse circulation drilling |
Mar. 18, 2008 |
| 7334651 |
Kick warning system using high frequency fluid mode in a borehole |
Feb. 26, 2008 |
| 7320370 |
Automatic downlink system |
Jan. 22, 2008 |
| 7316278 |
Method for determining drilling malfunction by correlation of drilling operating parameters and drilling response parameters |
Jan. 8, 2008 |
| 7317989 |
Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data |
Jan. 8, 2008 |
| 7299884 |
Seismic measurements while drilling |
Nov. 27, 2007 |
| 7278496 |
Drilling system and method |
Oct. 9, 2007 |
| 7280432 |
Oscillating shear valve for mud pulse telemetry |
Oct. 9, 2007 |
| 7261168 |
Methods and apparatus for using formation property data |
Aug. 28, 2007 |
| 7243736 |
Method of controlling a well experiencing gas kicks |
Jul. 17, 2007 |
| 7222681 |
Programming method for controlling a downhole steering tool |
May. 29, 2007 |
| 7178608 |
While drilling system and method |
Feb. 20, 2007 |
| 7168487 |
Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
Jan. 30, 2007 |
| 7168506 |
On-bit, analog multiplexer for transmission of multi-channel drilling information |
Jan. 30, 2007 |
| 7134511 |
Soil working method and device |
Nov. 14, 2006 |
| 7133325 |
Apparatus and method for generating electrical power in a borehole |
Nov. 7, 2006 |
| 7128142 |
Apparatus and methods for improved fluid displacement in subterranean formations |
Oct. 31, 2006 |
| 7100708 |
Autodriller bit protection system and method |
Sep. 5, 2006 |
| 7096975 |
Modular design for downhole ECD-management devices and related methods |
Aug. 29, 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 |
| 7082821 |
Method and apparatus for detecting torsional vibration with a downhole pressure sensor |
Aug. 1, 2006 |
| 7063174 |
Method for reservoir navigation using formation pressure testing measurement while drilling |
Jun. 20, 2006 |
| 7059427 |
Automatic drilling system |
Jun. 13, 2006 |
| 7044229 |
Downhole valve device |
May. 16, 2006 |
| 7044237 |
Drilling system and method |
May. 16, 2006 |
| 7044239 |
System and method for automatic drilling to maintain equivalent circulating density at a preferred value |
May. 16, 2006 |
| 7031841 |
Method for determining pressure of earth formations |
Apr. 18, 2006 |
| 7013991 |
Obstacle detection system for underground operations |
Mar. 21, 2006 |
| 6986396 |
Method for determining sweep efficiency for removing cuttings from a borehole |
Jan. 17, 2006 |
| 6957700 |
Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
Oct. 25, 2005 |
| 6941804 |
Determining the PVT properties of a hydrocarbon reservoir fluid |
Sep. 13, 2005 |
| 6926081 |
Methods of discovering and correcting subterranean formation integrity problems during drilling |
Aug. 9, 2005 |
| 6920942 |
Method and apparatus for directly controlling pressure and position associated with an adjustable choke apparatus |
Jul. 26, 2005 |
| 6896074 |
System and method for installation and use of devices in microboreholes |
May. 24, 2005 |
| 6879947 |
Method for optimizing the bit design for a well bore |
Apr. 12, 2005 |
| 6868920 |
Methods and systems for averting or mitigating undesirable drilling events |
Mar. 22, 2005 |
| 6820702 |
Automated method and system for recognizing well control events |
Nov. 23, 2004 |
| 6814142 |
Well control using pressure while drilling measurements |
Nov. 9, 2004 |
| 6808028 |
Method and apparatus utilizing NMR measurements to gather information on a property of the earth formation surrounding a wellbore |
Oct. 26, 2004 |
| 6755261 |
Method and system for controlling well fluid circulation rate |
Jun. 29, 2004 |
| 6741185 |
Digital signal receiver for measurement while drilling system having noise cancellation |
May. 25, 2004 |
| 6719055 |
Method for drilling and completing boreholes with electro-rheological fluids |
Apr. 13, 2004 |
| 6712160 |
Leadless sub assembly for downhole detection system |
Mar. 30, 2004 |
| 6712138 |
Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
Mar. 30, 2004 |
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