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Baker Hughes monitoring systems on high pressure Gulf of Mexico well

Tuesday, June 5, 2007

Baker Hughes reports that it has successfully used many of its drill monitoring / control, and formation evaluation technologies in a recent deepwater well in the Gulf of Mexico.

The well had a true vertical depth over over 6 miles (9660m) and pressures above 25,000 psi.

An X-treme Motor was used to drive the drillbit, which has downhole power of up to 1,000 horsepower (746 kw).

AutoTrak Rotary Closed Loop Drilling System was used to give precise directional control, which can improve hole quality in directional wells. Changes to the well trajectory can be sent to the AutoTrack from the surface.

OnTrack was used to provided formation evaluation, pressure and dynamics monitoring in one unit. It can take readings for temperature, bore / annular pressure, azimuthal gamma, vibration, stick slip and propagation resistivity.

LithoTrak was used to take neutron porosity measurements and formation density images around the well while drilling.

TesTrak was used to provided real time formation pressure and mobility data while drilling.

The pressure data can be used to help optimise the mud program, avoid kicks and improve selection of casing points (length you drill before putting in casing and drilling again with a smaller diameter hole).

The pressure and mobility data together can help target the most productive reservoir zones and determine optimum drain length for horizontal wells.

BakerHughes reports that the drill was 'outstanding success, with excellent directional control, and exceptional OnTrak and LithoTrak formation evaluation data. There was a very good density image, delivering important structural information. It as all achieved with full bi-directional communications."

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