Download Exam 1 | PETE 2031 - RESERVOIR ROCK PROP and more Quizzes Engineering in PDF only on Docsity! TERM 1 Primary Recovery DEFINITION 1 Production usingreservoirpotential/ pressure.perforations made at bottom of drill pipe and pressure pushes oil out12- 15% TERM 2 Secondary Recovery DEFINITION 2 injection of water or gas for pressure maintenanceto keep pressure other pipes drilled inject fluidtowardsproduction well15-20% TERM 3 Tertiary Recovery (Enhanced Oil Recovery) DEFINITION 3 Injection of fluids to displace remaining oilinjections squeeze oil out ( inject products cheaper than oil)4-11% TERM 4 Initial Oil Vol. (Vi) Final Oil Vol at end of primary recovery (Vf) DEFINITION 4 Vi = VfMi > MfOil expands as pressure drops TERM 5 Fence Diagram DEFINITION 5 3Drepresentationof the geological systemsstill a great deal ofuncertaintyin geo modeling TERM 6 Total Bulk Volume (Vt or Vb) = DEFINITION 6 =grain or solid volume (Vg or Vs) + pore volume (Vp)Vt = Vg + Vp TERM 7 Residual Porosity (r) = DEFINITION 7 =t -etotal - effectiveHigherr = higher level of connectivityif all pores connectedr = 0 TERM 8 Unit Cell DEFINITION 8 can be used to represent an entire system TERM 9 OOIP DEFINITION 9 AH(So)Sg + So + Sw = 1 TERM 10 Phase Behavior P < Pbub - P > Pbub DEFINITION 10 Saturated --- Unsaturated (gas is compressed to mix with liquid) TERM 21 Secondary Porosity DEFINITION 21 Voids formed after sediments were deposited and hence not related to original sedimentary particles (carbonate reservoir)harder to estimate so adds more to uncertainties in reservoir engineering calculations TERM 22 Secondary Porosity: Solution or Vugular DEFINITION 22 due to solution of more solution parts by reservoir fluids Fractures, Fissures, Joints- formed by structural activitiesDolomitization- when limestone (CaCO3) transforms to dolomite (CaMg(CO3)2) TERM 23 Dual Porosity DEFINITION 23 When primary and Secondary Porosity exist in the same formation TERM 24 Hydrostatic pressure DEFINITION 24 the pressure exerted by a fluid atequilibrium due to the force of gravity. TERM 25 Hydrostatic pressure gradient DEFINITION 25 the slope of hydrostatic pressurein P vs. z domainPress (p) vs Depth (z)he The normal hydrostatic pressure gradient for freshwater is about normal hydrostatic pressure gradient for freshwater is about0.433 psi/ft, or 9.792 kPa/m, TERM 26 Permeability DEFINITION 26 defines porous mediums ability to transmit fluids
