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Class Information
Number: 175/50
Name: Boring or penetrating the earth > With signaling, indicating, testing or measuring > Indicating, testing or measuring a condition of the formation
Description: Subject matter comprising a step or means for determining the characteristics of the earth formation traversed by a boring tool.










Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8689904 Detection of gas influx into a wellbore Apr. 8, 2014
8641272 System for performing dilatometer tests on the seafloor Feb. 4, 2014
8636060 Monitoring downhole conditions with drill string distributed measurement system Jan. 28, 2014
8622128 In-situ evaluation of reservoir sanding and fines migration and related completion, lift and surface facilities design Jan. 7, 2014
8614577 Automatic anisotropy, azimuth and dip determination from upscaled image log data Dec. 24, 2013
8596383 Method for detecting hydrocarbon zones in a geological formation Dec. 3, 2013
8596384 Reducing differential sticking during sampling Dec. 3, 2013
8581594 Microresistivity anisotropy logging tool employing a monopole current injection electrode Nov. 12, 2013
8573325 Optimized pressure drilling with continuous tubing drill string Nov. 5, 2013
8573327 Apparatus and methods for estimating tool inclination using bit-based gamma ray sensors Nov. 5, 2013
8561686 Downhole fluid communication apparatus and method Oct. 22, 2013
8556001 Process for determining the presence and/or quantity of H.sub.2S in subsoil and related apparatus Oct. 15, 2013
8549905 Simulating downhole flow through a perforation Oct. 8, 2013
8550160 Apparatus and methods for pulse testing a formation Oct. 8, 2013
8544564 Wireless communications in a drilling operations environment Oct. 1, 2013
8521435 Estimating sigma log beyond the measurements points Aug. 27, 2013
8511400 Apparatus and method for acoustic measurements while using a coring tool Aug. 20, 2013
8508231 Logging tool employing a monopole current injection electrode for microresistivity imaging Aug. 13, 2013
8502696 Dual wellbore telemetry system and method Aug. 6, 2013
8479841 Assembly for drilling and logging, method for drilling and logging and device for electro pulse drilling Jul. 9, 2013
8453760 Method and apparatus for controlling bottomhole temperature in deviated wells Jun. 4, 2013
8448720 Optimized pressure drilling with continuous tubing drill string May. 28, 2013
8439130 Method and apparatus for seismic data acquisition during drilling operations May. 14, 2013
8434356 Fluid density from downhole optical measurements May. 7, 2013
8433520 Job monitoring methods and apparatus for logging-while-drilling equipment Apr. 30, 2013
8417457 Borehole stress module and methods for use Apr. 9, 2013
8408355 Enclosures for containing transducers and electronics on a downhole tool Apr. 2, 2013
8397836 Pressure and flow control in drilling operations Mar. 19, 2013
8390295 Method and apparatus for focusing in resistivity measurement tools using independent electrical sources Mar. 5, 2013
8392120 Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis Mar. 5, 2013
8387722 Strength (UCS) of carbonates using compressional and shear acoustic velocities Mar. 5, 2013
8380435 Windowed statistical analysis for anomaly detection in geophysical datasets Feb. 19, 2013
8347959 Method and system for increasing production of a reservoir Jan. 8, 2013
8340912 Seismic attributes for structural analysis Dec. 25, 2012
8321132 Combining LWD measurements from different azimuths Nov. 27, 2012
8316964 Drill bit transducer device Nov. 27, 2012
8305083 Calibration method for a microresistivity logging tool Nov. 6, 2012
8302687 Apparatus for measuring streaming potentials and determining earth formation characteristics Nov. 6, 2012
8286730 Pressure and flow control in drilling operations Oct. 16, 2012
8290711 Method of estimating the fracture density in a rock medium Oct. 16, 2012
8279708 Measurement method for a granular compaction pile using crosshole seismic testing Oct. 2, 2012
8278928 Apparatus and method for detection of position of a component in an earth formation Oct. 2, 2012
8272438 System and method for robustly and accurately obtaining a pore pressure measurement of a subsurface formation penetrated by a wellbore Sep. 25, 2012
8267197 Apparatus and methods for controlling bottomhole assembly temperature during a pause in drilling boreholes Sep. 18, 2012
8261856 Methods and systems for drilling boreholes Sep. 11, 2012
8261855 Methods and systems for drilling boreholes Sep. 11, 2012
8256565 Enclosures for containing transducers and electronics on a downhole tool Sep. 4, 2012
8251160 Measurement while drilling apparatus and method of using the same Aug. 28, 2012
8237584 Changing communication priorities for downhole LWD/MWD applications Aug. 7, 2012
8215384 Bit based formation evaluation and drill bit and drill string analysis using an acoustic sensor Jul. 10, 2012

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