Download - Chapter 1 - Production Engineering Overview
Petroleum Production EngineeringChapter 1: Production Engineering Overview 25/8/2012
Course Content The course aims at providing students with basis
knowledge of the petroleum production technology such as well completion, well stimulation, methods of oil well production, secondary recovery and pressure maintenance, principles of the oil well production design techniques and to show how these may be utilized to optimize production optimization from a particular well or field.
First Oil Well
Simplified system for vertical well production modeling
First oil well in 1850s Pennsylvania, USA
Oil Fields and Their LifecycleA lifecycle of an oil field consists of the
following stages: Exploration
Appraisal Development Production
Abandonment
Revenue Throughout Life Cycle
Objectives of Production Engineers Maximize well productivity
Reduce skin, s: Stimulation Well completion design
Reduce Pwf: Minimize pressure losses in wellbore and surface
equipment Artificial lift or mechanical lift
Petroleum Production System
Wellbore flow
Artificial Lift
IPR (completion + skin)Acidizing, fracturing, completion design
Reservoir System (IPR) Phase: Under-saturated oil Two-phase (saturated) Gas
Outer boundary Infinite acting No-flow
Constant pressure (water influx)
Formation Damage Damage can be caused by Drilling/Completion Production Stimulation Any operation that alter the flow conditions
Skin Factor Damage skin
Completion skin Combined skin effect
Flow in Pipes Wellbore pressure drop calculation Single phase flow: Dphy + Dpf Two-phase flow: holdup, slip velocity and
correlations Well deliverability Flow in horizontal pipe and surface network
Well Stimulation: Hydraulic Fracturing Optimal Fracture Geometry Optimal fracture length and width Dimensionless fracture conductivity
Fracture Treatment Design 2D geometry model (PKN, KGD) Total fluid volume and injection time Pad volume, Proppant mass, Injection schedule
Well Stimulation Acidizing
Artificial lift Sucker Rod Pump Flow rate and pump speed Effective plunger stroke length Prime mover power
ESP Design chart Number of stages Horse power
Gas lift Flow rate and bottomhole flowing pressure Injection point (Hinj), GLR and pressure gradient
above and below (inside tubing) Gas rate required Injection pressure and bottomhole pressure