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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Case History: Amberjack A16ST (T) 
Well
Pore Pressures
Well Pore PressuresBy
BP Exploration,
Houston, Texas
The Ambejack Field (Gulf of Mexico: Mississippi Canyon 109)
was originally drilled in the early 90s. A second phase of drilling
began in 1998, with each well in the program presenting a
unique set of challenges to the Amberjack team. In this presentation,
the pore pressure case history of the early wells in this
program is discussed.
Pore pressure work on the field, using offset well RFT, sonic and
resistivity data, indicated a pore pressure uncertainty range of
3 ppg, around which the A16ST (T) well had to be planned. For
a well that was initially considered to be in a development/production
setting, a surprising number of complications entered the
planning process.
During drilling, pressures were monitored using resistivity and
well performance data: the well had to be sidetracked to reach
TD. A post-well pore pressure interpretation is proposed in
which a series of pressure ramps were drilled in this well. This
conclusion is reached through the integration of all available
pressure data sources in the well
.
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