Method and computer program product for drilling mud design...

Details Method and computer program product for drilling mud design... Method and computer program product for drilling mud design...

2008-02-05

2010-02-09

Tsai, Carol S (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

C175S040000, C175S048000, C175S050000, C175S058000, C175S059000, C175S060000, C175S065000, C175S070000, C175S072000, C702S009000, C702S012000

Reexamination Certificate

active

07660672

ABSTRACT:
A method and computer program product of either preventing or minimizing pore pressure increase near the wellbore wall within argillaceous formations through which a borehole has been drilled. By interpreting relevant drilling experience data, the type, extent and time-dependency of wellbore instability mechanisms are determined. The impact of drilling mud designs on the time-dependent wellbore instability and hole enlargement is determined by back-analyzing observed drilling events. At least one field-based criterion relationship between net mud weight reduction percentage ratio and hole enlargement is determined. A maximum allowable percentage ratio(s) of net mud weight reduction and either breakout mud weight or mud weight used for the adopted maximum hole enlargement that the wellbore may experience during drilling is determined. Drilling mud salinity value and salt type to satisfy maximum allowable percentage ratio(s) is then determined.

REFERENCES:
patent: 2938708 (1960-05-01), Arps
patent: 3841419 (1974-10-01), Russell
patent: 4710906 (1987-12-01), Bradley et al.
patent: 5285692 (1994-02-01), Steiger et al.
patent: 2003/0212495 (2003-11-01), Mese et al.
patent: 41696 72 (1973-11-01), None
patent: WO-2006/007347 (2006-01-01), None

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