Hydraulic wellbore erosion while drilling
Journal Article
·
· World Oil
OSTI ID:415703
- British Borneo Exploration, Houston, TX (United States)
- OGCI, Houston, TX (United States)
This article is the first to identify nozzle hydraulic effects in a field evaluation of hole erosion. Common practice normally identifies annular velocity as the culprit for excessive hole washout. But field tests in this article clearly identify excessive nozzle hydraulics as the cause for hole erosion. Both oil-based and water-based drilling fluids were used during the field test. The primary contribution of this study is a simple guideline to assist drillers in preventing excessive hole erosion. This article describes drilling conditions and caliper logs, and discusses sequences of events that could explain the observations. Some preliminary guidelines are presented so that drillers can prevent erosion of the wellbore from high shear rates at bit nozzles.
- OSTI ID:
- 415703
- Journal Information:
- World Oil, Journal Name: World Oil Journal Issue: 12 Vol. 217; ISSN 0043-8790; ISSN WOOIAS
- Country of Publication:
- United States
- Language:
- English
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