Fracture charging or ballooning effects were evaluated while drilling high pressure, high temperature (HPHT) wells. A method based on analytical and numerical approaches for estimating the volumetric expansion of wellbores as a function of wellbore pressure is presented. Analysis showed that the diametric expansion of wellbore must be in the range of centimeters at the critical pressure and consumed a significant number of extra mud barrels before breakout.
A practical method for evaluating effects of fracture charging and/or ballooning when drilling high pressure, high temperature (HPHT) wells
SPE/IADC Drilling Conference, 2001 ; 239-248
2001
10 Seiten, 23 Quellen
Conference paper
English
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