In-situ stress and rock strength in the GBRN/DOE Pathfinder well, south Eugene Island, Gulf of Mexico
Journal Article
·
· JPT, Journal of Petroleum Technology
- Stanford Univ., CA (United States)
The authors present a relatively simple technique to constrain in-situ stress and effective rock strength from observations of wellbore failure in inclined wells. Application of this technique in the Global Basins Research Network (GBRN)/DOE Pathfinder well demonstrated that (1) the azimuth of S{sub h min} is {approx} N42{degree}E, perpendicular to a major growth fault penetrated by the well; (2) the magnitude of S{sub H max} is relatively close to the vertical stress; and (3) the effective in-situ compressive rock strength is 3,500 to 4,000 psi. They show that once they have estimated in-situ stress and rock strength, it is possible to compute the mud pressure required to inhibit failure for wells of any azimuth and inclination. Finally, they show how it is possible to estimate the magnitudes of both S{sub h min} and S{sub H max} in cases where independent knowledge of stress orientation is available (for example, from wellbore breakouts in nearby vertical boreholes).
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC22-93BC14961
- OSTI ID:
- 87554
- Journal Information:
- JPT, Journal of Petroleum Technology, Journal Name: JPT, Journal of Petroleum Technology Journal Issue: 7 Vol. 47; ISSN 0149-2136; ISSN JPTJAM
- Country of Publication:
- United States
- Language:
- English
Similar Records
On the mechanical stability of inclined wellbores
Observations of wellbore failure in the Toa Baja well - Implications for the state of stress in the North Coast Tertiary Basin, Puerto Rico
State of stress and the relation to tectonics in the central Savannah River area of South Carolina
Journal Article
·
Sat Jun 01 00:00:00 EDT 1996
· SPE Drilling and Completion
·
OSTI ID:250841
Observations of wellbore failure in the Toa Baja well - Implications for the state of stress in the North Coast Tertiary Basin, Puerto Rico
Journal Article
·
Thu Feb 28 23:00:00 EST 1991
· Geophysical Research Letters (American Geophysical Union); (United States)
·
OSTI ID:5399687
State of stress and the relation to tectonics in the central Savannah River area of South Carolina
Conference
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:6395104