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Acceleration compensating system

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow
Patent

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Acoustic data link and formation property sensor for downhole MW

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Patent

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Acoustic logging while drilling tool to determine bed boundaries

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent

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Acoustic method of connecting boreholes for multi-lateral comple

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent

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Acoustic position measurement system for well bore formation

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

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Acoustic system to guide a coal seam auger

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent

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Acoustical telemetry

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Reexamination Certificate

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Adaptive apparatus, system and method for communicating with...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

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Advanced coring apparatus and method

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Signaling or indicating condition of cutting in cuttings...
Reexamination Certificate

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Alcohol-in-oil drilling fluid system

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Patent

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Analyzing for helium in drilling muds to locate geothermal reser

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Patent

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Angle sensor using thermal conductivity for a steerable boring t

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent

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Apparatus and method for cleaning and sealing a well...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Reexamination Certificate

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Apparatus and method for detecting a location and an orientation

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent

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Apparatus and method for detecting abnormal drilling conditions

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow
Patent

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Apparatus and method for drilling into the sidewall of a drill h

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent

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Apparatus and method for environmental surveying for contaminant

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Patent

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Apparatus and method for environmental surveying for contaminant

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Patent

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Apparatus and method for formation testing while drilling...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Reexamination Certificate

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Apparatus and method for formation testing while drilling...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Reexamination Certificate

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