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Wellbore Stability—Keeping Wellbores Open

Recorded On: 07/16/2014

In spite of more than 20 years of advances in the application of geomechanical principles to improve understanding of its causes and improvements in drilling practices to reduce its effects, wellbore instability continues to be perhaps the largest single source of non-productive drilling time. These uncertainties arise largely because of lack of the appropriate rock properties data and information about the magnitudes and orientations of in situ stresses. This talk will briefly review the history of application of geomechanics to wellbore design, will discuss the sources of data required to reduce uncertainties, the ways in which to recognize the causes of instabilities to allow appropriate remediation, and the pros and cons of various models currently in use within the oilfield.

Sponsored by: Drilling and Completions Technical Director

Daniel Moos
Baker Hughes Technology Fellow

Daniel Moos is one of four Baker Hughes Technology Fellows, jointly responsible for guiding technology development and for advising senior management on company-wide technical issues. He received his BS in Geology from Cornell University and his MS and PhD in Geophysics from Stanford University.

Following graduation he helped to establish and manage logging services for the Ocean Drilling Program and sailed on several research cruises as a founding member of the Lamont-Doherty Borehole Research Group. He then re-joined the Stanford University Rock and Borehole Geophysics Project, an academic consortium supported by major oil and gas and energy services companies.

He was a co-founder in 1996 of GeoMechanics International (GMI), which developed and applied geomechanical principles to solve oilfield, geothermal, and geotechnical site characterization problems. After the acquisition of GMI by Baker Hughes in 2008 he assumed the role of GMI Chief Scientist. He was elected a Baker Hughes Technology Fellow at the end of 2010.

He has published extensively, provided consulting services and developed and taught courses in reservoir geomechanics, served on and co-chaired conference committees and acted as reviewer for professional journals, and holds patents on methods for in situ stress determination, wellbore imaging and acoustics, stimulation design and analysis, and flow properties of fractured reservoirs. He is a member of AAPG, AGU, SEG, SPWLA, EAGE, and ARMA.


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