AU3776800A
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Method and apparatus for establishing branch wells at a node of a parent well
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BR9803484A
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Process and apparatus for measuring the resistivity of a soil formation.
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MX9802911A
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Method and apparatus for locating indexing systems in a cased well and conducting multilateral branch operations.
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CN1206778A
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Method and apparatus for locating indexing systems in cased well and conducting multilateral branch operations
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CN1206837A
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Method for measuring earth stratum density
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GB9800142D0
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Seismic detection apparatus and method
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MX9707475A
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Method and apparatus to perforate and re-enter multiple lateral branches of a well.
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GB9716825D0
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Method and apparatus for suppressing drillstring vibrations
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BR9703805A
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Multiple sub-branching for seating in a well hole
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GB9705838D0
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Signal recognition system for wellbore telemetry
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GB9705837D0
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Noise detection and suppression system for wellbore telemetry
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EP1245783A2
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Apparatus and method for directional drilling using coiled tubing
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BR9700848A
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Apparatus and process for directional drilling using spiral tubing
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EP0786674A2
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Apparatus and method for the suppression of microphonic noise in proportional counters for borehole logging-while-drilling
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GB9621871D0
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Alarm system for wellbore site
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GB9607299D0
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Signal recognition system for wellbore telemetry
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GB9607297D0
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Noise detection and suppression system for wellbore telemetry
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GB9601362D0
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Method and apparatus for determining fluid influx during drilling
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EP0723067A2
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Resistivity antenna shield, wear band and stabilizer assembly for measuring-while-drilling tool
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EP0709546A2
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Method and apparatus for determining drilling conditions
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