Module 1.9 Completions & Workovers Flashcards
Objective 1 Typical Configuration: The student will identify and name the basic components of a well.
Pg 5
Objective 2 Casing Review: The student will identify and name the different basic casing strings of a well.
Pg 6
Objective 3 Tubing and Downhole Equipment: The student will name and identify some basic downhole well equipment and explain the purpose of that downhole well equipment.
Pg 7
Objective 4 Completion Configurations: The student will recognize and identify some of the differences and the reasons for those differences in the set-up of downhole well equipment.
Pg 9
Objective 5 Wellhead: The student will identify and name the basic components of a wellhead and explain the purpose of the wellhead.
Pg 11
Objective 6 Information for Completion: The student will name some of the sources of information which help to identify where in the well hydrocarbon production may be found and explain how that information helps in the assessment of the hydrocarbon location.
Pg 13
Objective 7 Perforating: The student will name and explain the two methods of providing a flow path for the formation fluids from the reservoir into the wellbore.
Pg 14
Objective 8 Well Stimulation: The student will explain the purpose and types of well stimulation and how both acidizing and hydraulic fracturing improve well productivity.
Pg 17
Objective 9 Hydrostatic Pressure: The student will explain what hydrostatic pressure is and how it influences the production from a well and explain the term swabbing and when this procedure used.
Pg 19
Objective 10 Multiple Zone Completions: The student will explain what is meant by the terms segregated and commingled production, will explain a multi-zone completion and will list advantages and disadvantages of such completions.
Pg 21
Objective 11 Well Evaluation: The student will list the reasons why a well might be tested and some of the different types of tests.
Pg 24
Objective 12 The Completion Program: The student will describe the purpose and basic content of a completion program.
Pg 25
Objective 13 Artificial Lift: The student will explain the term artificial lift, why it may be needed in a well and describe the three main forms.
Pg 27
Objective 14 Pumpjack Unit: The student will explain the basic operation of a pumpjack and a bottomhole pump.
Pg 28
Objective 15 Pumps: The student will explain the basic operation of the electric submersible pump and the progressive cavity pump.
Pg 30
Objective 16 Gas Lift System: The student will explain the basic operation of a gas lift system.
Pg 31
Objective 17 Well Workovers: The student will define a workover and identify what type of work on a well would be constituted as a workover and define remedial cementing and list the reasons it may be required.
Pg 32
Objective 18 Workover / Service Rigs: The student will describe a service rig and list the main types and their particular functions.
Pg 34
Objective 19 Well Abandonment: The student will explain what is meant by the terms abandonment and active and suspended wells.
Pg 36
Objective 20 Capital versus Expense Workovers: The student will determine if a workover cost is classified as a capital cost or an operating expense.
Pg 38
Question 1: Indentify label 1 on the diagram A - perforations B - down hole pump C - production casing D - surface casing
A)
Question 2: Identify label 2 on the diagram A - perforations B - surface casing C - liner D - tubing
D)
Question 3:
A)
Question 4:
C)
Question 5:
C)
Question 6: Select the property that is least desirable for a proppant A - uniformity in size B - difficult to crush C - small and light D - mixture of different sizes
D)
Question 7: In an oil well, how do we get the oil and water to the surface if the reservoir pressure is not sufficiently high to permit the well to flow on its own?
A - inject water into the reservoir
B - shut off the water
C - initiate an EOR project
D - drill another wellE - install a bottom-hole pump
E)
Question 8: Which technique CANNOT be performed with the service rig?
A - complete the well in the different zone
B - repair leaking tubing
C - replace a bottom whole pump
D - none of the above
D)
What are the two primary well stimulation techniques
Acidizing and fracturing
What are the two principal types of acid used in a well acidizing stimulation treatment
– Hydrochloric which is used to dissolve calcium carbonates
– Hydrofluoric which is used to dissolve silica
How hydraulic fracture treatment works?
Fluids are pumped into the well at high rates and high-pressure that creates fractures information
In fracturing what is used to keep the fractures open?
A proppant, which usually is a specially selected sand carry into the frak in a viscous fluid called a gel
What is hydrostatic pressure?
Is the pressure exerted by the column of fluid
What is the hydrostatic pressure of water!
9.8 kPa per meter of depth
The fluids used during a completion or workover for killing the well, as frac fluid are known as
Load fluids
The mixing of production in the wellbore is known as?
Commingling production
Before production may be commingled, approval must be granted by the Alberta energy regulator under which restrictions?
– Pressure in the zone must be comparable
– Fluid in the zone must be compatible
– The rights of all parties must be conserved
Any work on the wellbore which changes the flowing characteristics of the well or repairs a problem within the wellbore can be classified as
A workover
What is considered a capital versus an expense workover?
Generally the cost of the initial completion of a productive zone will be capitalize and any other subsequent work on the well will be considered as an expense work
