24-Pet-A3 Fundamental Reservoir Engineering
Worked solutions to 8 past sittings (2014–2018), 55 questions. Pick a sitting, or start from a topic below.
Topics across the sittings
Topics that come up in more than one sitting, taken from the headings of our worked solutions. A topic counts once per sitting.
- Capillary Pressure (6 sittings): December 2018 Q5 · May 2016 Q5 · December 2015 Q7 · December 2014 Q5 · May 2014 Q7 · Undated paper Q2
- Reservoir Engineering Concepts (4 sittings): May 2016 Q1 · December 2015 Q1 · December 2014 Q1 · May 2014 Q1
- Absolute (3 sittings): May 2018 Q2 · May 2014 Q3 · Undated paper Q4
- Interference Test (3 sittings): December 2018 Q3 · May 2018 Q3 · December 2014 Q3
- P/Z Material Balance (3 sittings): May 2016 Q4 · December 2015 Q4 · December 2014 Q4
- Relative Permeability (3 sittings): December 2018 Q4 · December 2017 Q4 · May 2014 Q3
- Reservoir Engineering Terminology (3 sittings): December 2018 Q1 · May 2018 Q1 · Undated paper Q1
- Water-Oil Contact (3 sittings): December 2018 Q5 · May 2016 Q5 · December 2014 Q5
- Effective (2 sittings): December 2018 Q4 · December 2015 Q2
- Pressure at an Observation Well (2 sittings): December 2018 Q3 · December 2014 Q3
- Steady-State Core Flood (2 sittings): December 2018 Q4 · December 2015 Q2
- Transition-Zone Thickness (2 sittings): December 2018 Q5 · May 2016 Q5
- Undersaturated Oil Reservoir (2 sittings): May 2016 Q6 · December 2014 Q6
- Volumetric Dry Gas Reservoir (2 sittings): May 2016 Q4 · May 2014 Q2
- Volumetric Gas Reservoir (2 sittings): May 2018 Q4 · December 2014 Q4
Questions by sitting
December 2018
- Question 1: Reservoir Engineering Terminology
- Question 2: p/Z Material Balance for a Volumetric Dry-Gas Reservoir
- Question 3: Interference Test — Pressure at an Observation Well
- Question 4: Steady-State Core Flood — Effective and Relative Permeability
- Question 5: Capillary Pressure — Water-Oil Contact and Transition-Zone Thickness
- Question 6: Combination Gas-Cap/Oil-Zone Material Balance
- Question 7: Decline-Curve Analysis — Harmonic Decline from a Rate-vs-Cumulative Plot
May 2018
- Question 1: Reservoir Engineering Terminology
- Question 2: Absolute, Relative and Effective Permeability from Core-Flood Data
- Question 3: Interference Test — Time to a Given Pressure Drop at an Observation Well
- Question 4: Volumetric Gas Reservoir — Initial Gas in Place and Recovery Factor by $p/Z$ Material Balance
- Question 5: Drive-Mechanism Indices for a Combination-Drive Oil Reservoir
- Question 6: Decline-Curve Analysis from a Rate–Cumulative-Production Plot
- Question 7: Skin from Formation Damage and the Productivity Gain from Stimulation
December 2017
- Question 1: Combination Material Balance — Undersaturated-to-Saturated Solution-Gas-Drive Reservoir
- Question 2: Superposition in Time — Two-Rate Drawdown Then Shut-In in an Infinite-Acting Reservoir
- Question 3: Pressure-Drawdown Test — Permeability, Skin and a Volumetric OOIP Estimate
- Question 4: Core-Flood Permeability, Relative Permeability and Buckley-Leverett Frontal Advance
- Question 5: Water-Wet Relative Permeability — Wetting/Non-Wetting Phase Interference and Imbibition vs. Drainage
- Question 6: Outer-Boundary Conditions and Pressure Profiles — Infinite-Acting, Pseudo-Steady-State and Steady-State Flow
May 2016
- Question 1: Reservoir Engineering Concepts
- Question 2: Core-Plug Porosity, Absolute Permeability and End-Point Oil Relative Permeability
- Question 3: Bottom-Hole Pressure Near a Sealing Fault (Method of Images)
- Question 4: Volumetric Dry Gas Reservoir — p/Z Material Balance
- Question 5: Capillary Pressure — Water-Oil Contact and Transition-Zone Thickness
- Question 6: Undersaturated Oil Reservoir — Volumetric Material Balance
- Question 7: Steady-State Radial Flow — Wellbore and Average Reservoir Pressure
December 2015
- Question 1: Reservoir Engineering Concepts
- Question 2: Steady-State Core Flood — Effective and Relative Permeabilities
- Question 3: Transient Radial Flow — Bottom-Hole Pressure After 2 Days
- Question 4: Volumetric Dry-Gas Reservoir — p/Z Material Balance
- Question 5: Pseudo-Steady-State Inflow — Flowing Wellbore Pressure
- Question 6: Undersaturated Oil Material Balance — Cumulative Production to Bubble Point
- Question 7: Capillary Pressure — Depth of 40% Water Saturation
December 2014
- Question 1: Reservoir Engineering Concepts
- Question 2: Interwell Flow Direction and Velocity
- Question 3: Interference Test — Pressure at an Observation Well
- Question 4: Volumetric Gas Reservoir — p/Z Material Balance
- Question 5: Capillary Pressure — Water-Oil Contact and Water-Oil Ratio
- Question 6: Undersaturated Oil Reservoir — Material Balance and Gas Reinjection
- Question 7: Dry Gas Reservoir — Depletion and Gas Produced
May 2014
- Question 1: Reservoir Engineering Concepts
- Question 2: Volumetric Dry Gas Reservoir — $p/Z$ Material Balance
- Question 3: Core Flood Experiment — Absolute and Relative Permeability
- Question 4: Transient Pressure Response at an Observation Well
- Question 5: Undersaturated-to-Saturated Oil Material Balance
- Question 6: Wellbore Damage, Skin Factor, and Acidizing
- Question 7: Capillary Pressure, Rock Typing, and Multiphase Pore Occupancy
Undated paper
- Question 1: Reservoir Engineering Terminology
- Question 2: Capillary Pressure, Solution GOR, and Core Saturation Volumes
- Question 3: Linear Flow of a Slightly Compressible Oil — Downstream Pressure and Rate
- Question 4: Absolute and Effective Permeability from a Core-Flood Test
- Question 5: Volumetric Check and Water Influx by p/Z Gas Material Balance
- Question 6: Undersaturated-Oil Material Balance — Initial Oil in Place and Free Gas Volume
- Question 7: Harmonic Decline-Curve Analysis