PE Petroleum case studies
PE Petroleum · Put your knowledge to work in context.
The Principles and Practice of Engineering (PE) Petroleum exam is NCEES's discipline-specific licensure examination for petroleum engineers. It tests for a minimum level of competency expected of an engineer practicing independently, and it is designed for engineers with at least four years of post-college work experience in the discipline. The PE Petroleum case studies are 5 cases and about 4,606 words.
1The Pattern That Was Not Balanced: Voidage Replacement Below the Bubble Point
A 5-spot waterflood in a 22% porosity sandstone (Bo 1.25 rb/STB, Bw 1.02) has been injecting for 18 months. The single injector takes 6,200 BWPD at 1,900 psi wellhead pressure, which is 3,600 psi bottomhole at 4,800 ft TVD; the fracture gradient is 0.75 psi/ft.
784 words, about 4 min2Losses Then a Kick at the Same Depth: Two Pressure Regimes at 12,400 ft
While drilling a 12 1/4 in hole at 12,400 ft MD/TVD with 14.2 ppg mud you take 40 bbl/hr of losses into a depleted sand at 12,400 ft (pore pressure 12.9 ppg EMW). You reduce mud weight to 13.6 ppg and the losses stop.
911 words, about 5 min3Gas Lift Gas at a Hard Compressor Limit: Where Does the Next Mcf Go?
Your field gas-lift compressor is rated at 5.5 MMscf/d and is running at its limit. Two wells are on continuous gas lift.
969 words, about 5 min4Is the Well Depleted or Damaged? A Productivity Index That Fell 44%
Well X-12 produced 1,200 BOPD at a flowing bottomhole pressure of 2,800 psia when the reservoir pressure was 3,200 psia. Six months later it makes 700 BOPD at a flowing bottomhole pressure of 2,300 psia.
964 words, about 5 min5Hydrate Control on a Low-Rate Gathering Line: Methanol, MEG, or Heat?
A 6-inch, 8-mile gathering line carries 8 MMscf/d and 30 bbl/d of water from a wellhead at 800 psig to a compressor station at 250 psig. Winter arrival temperature is 48 F.
978 words, about 5 min