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DescriptionPore pressure, fracture pressure, and overburden are the three primal forces in the earth’s sedimentary crust. Upstream subsurface engineers and geoscientists are confronted by the earth’s forces every day. Engineering choices for drilling, production and initial shut-in pressures depend upon the force balanced physics of the earth’s sedimentary crust. Deterministic Earth Mechanical Science is an inter-related set of physically causal relationships. Observations are consistent with a small equation matrix that is composed only of accepted physical laws. The same few constants apply to all of the laws in the matrix. [Mass-energy] is conserved and energy tends to be minimized at all scales and in all places. The earth’s gravity is the primary regulatory force. All of the earth’s mechanical forces act through mineral and fluid molecules. Gravity is either the maximum, intermediate, or minimum principal stress. It can be calculated as the sum of in situ mineral and fluid densities integrated over true vertical depth. The earth’s Normal Fault Regime [mass-energy] synthesis is given in chapter 6. Natural compaction reaches a peak loading-limb point at the maximum burial depth. Thereafter significant unloading-reloading can occur. It will be between the loading-limb and the static elastic [stress/strain] limit of the last peak loading-limb point. This natural hysteresis and its relationship to Hook’s law are explained in chapter 8. The chapters of Pore Pressure through Earth Mechanical Systems explain:
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About the Author
Phil Holbrook received his Ph.D. in Geology from Penn State in 1973 whereupon he entered Gulf Oil Company’s one-year Experience Broadening program. (Gulf’s EB program is equivalent to an M.S. in Exploration Geophysics) Afterward he coordinated and taught much of Gulf’s EB program at their research center in Harmarville, Pa.
He has 34 years of upstream oilfield experience in exploration and research. In his early professional years, he performed seismic interpretation, seismic well ties, reservoir studies, and reserves estimates. He served as a corporate wide consulting petrophysicist for ExxonMobil.
Thereafter he joined Sperry-Sun Drilling Services. That experience includes 16 years of MWD and wireline log interpretation which overlapped with 16 years of drilling advisory service. He spent 27 years developing a deterministic Earth Mechanical Systems Field Theory. The earth’s pressures, stresses and their relationships to petrophysics are revealed and explained in his first book "Pore Pressure through Earth Mechanical Systems".
Dr. Phil Holbrook is a world authority on Earth Mechanics and Petrophysics. Geo-mechanics, Drilling Engineers and Reservoir Engineers depend heavily on Earth Mechaniics. Dr. Holbrook teaches short courses in petrophysics and geologic mechanics that affect drilling, reserves estimation and production. Specialized short courses, as well as Geo-mechanical mentoring and consulting are also available.
- Books >> Engineering
- Books >> Production
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