Use of MWD assembly for multiple-well drilling

Details Use of MWD assembly for multiple-well drilling Use of MWD assembly for multiple-well drilling

2005-01-11

2005-01-11

McElheny, Jr., Donald (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

Reexamination Certificate

active

06842699

ABSTRACT:
This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes gyroscopes, magnetometers and accelerometers for determining the borehole inclination and azimuth during the drilling of the borehole. With the present invention, a secondary borehole for secondary recovery operations may be drilled with accuracy in proximity to a cased producing borehole.

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