University of Louisiana
Department of Petroleum Engineering
Drilling Fluids, PETE382
W TECH
Name: gb l LL CLID:
Part I Concepts: (15 points)
1) List the three types of chilling uids (1.5 pts)
OISE chweid
1N (lit 9»- Email
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2) Ex

UNIVERSITY OF LOUISIANA AT LAFAYETTE
COLLEGE OF ENGINEERING
DEPARTMENT OF PETROLEUM ENGINEERING
PETE 382:
Instructor:
Term:
Drilling Fluids
Ahmed Temani
Summer 2015
Homework 4
Due Date: 07/14/2015
1- Define: Laminar flow and Turbulent Flow.
2- Would the p

PETE 382: DF- Homework #2
(due Feb. 7)
1. How much Barite is required to increase the density of 360 bbls of mud
from 12 ppg to 13 ppg? (Provide your answers in bbls, in lbs and in
sacks).
2. 250 sacks of barite were added to 300 bbls of an 11 ppg mud.
Ca

PETE 382-001: Drilling Fluids
Homework #1 : (Due Feb. 2)
1. Types of mud and Use of each:
Water-based:
Oil-based:
Air/Gas-based (Foam):
2. A drilling fluid is used to control the downhole pressure of the well:
3. Given the following vertical well schemati

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PETE 382
Homework #5, due on March 23
1/ Define: Yield Point, Plastic Viscosity, Apparent Viscosity and Gel Strength.
3/ Using a rotational viscometer, the following table was obtained.
N (RPM)
Dial Reading (lb/100ft2)
600
83
300
54
200
42
100
31
6
16
3

PETE 382
Homework #6, due on April 6
1, Triplex Pump operating at 60 strokes/min is used to pump mud to drill a well. The pump
cylinder diameter is 8 in, with a stroke length of 14 in. The flow efficiency is 91%.
Find the annular velocity in ft/s if the

Virginia C. Townsend
ULID: C00154779
PETE 382-001: DF
Homework #5: Due 3/23/17
1. Yield Point:
A parameter of the Bingham plastic model. YP is the yield stress extrapolated to a shear rate of zero.
A Bingham plastic fluid plots as a straight line on a she

Tripping Jobs
By : Ahmed Temani
What is tripping ?
In some cases during drilling, the whole drill
string must be pulled out to bring the bit to
surface to either put a new bit or carry out
some other operation (e.g. Casing, Logging)
This operation of pu

UNIVERSITY OF LOUISIANA AT LAFAYETTE
COLLEGE OF ENGINEERING
DEPARTMENT OF PETROLEUM ENGINEERING
PETE 382:
Instructor:
Term:
Drilling Fluids
Ahmed Temani
Summer 2015
Homework 1
Due Date: 06/16/2015
1/ State the types of mud and explain the use of each one

UNIVERSITY OF LOUISIANA AT LAFAYETTE
COLLEGE OF ENGINEERING
DEPARTMENT OF PETROLEUM ENGINEERING
PETE 382:
Instructor:
Term:
Drilling Fluids
Ahmed Temani
Summer 2015
Homework 2
Due Date: 06/23/2015
1/ Define: Yield Point, Plastic Viscosity, Apparent Viscos

UNIVERSITY OF LOUISIANA AT LAFAYETTE
COLLEGE OF ENGINEERING
DEPARTMENT OF PETROLEUM ENGINEERING
PETE 382:
Instructor:
Term:
Drilling Fluids
Ahmed Temani
Summer 2015
Homework 3
Due Date: 06/29/2015
1/ How much Oil (in bbl), Water (in bbl) and Barite (in sa

UNIVERSITY OF LOUISIANA AT LAFAYETTE
COLLEGE OF ENGINEERING
DEPARTMENT OF PETROLEUM ENGINEERING
PETE 382:
Instructor:
Term:
Drilling Fluids
Ahmed Temani
Summer 2015
Name:_
Homework 5
Due Date: 07/27/2015
CLID:_
Problem I Tripping Jobs
1. Define Swabbing a

Introduction to Drilling Fluids
By : Ahmed Temani
How do we drill a well?
Video
(Source : https:/www.youtube.com/watch?v=Do9dz6ypD7w)
Overview
We will discuss the following:
What
is a drilling fluid?
Primary functions of drilling fluids
Types of fluids
Dr

MUD PROPERTIES
AND MEASUREMENTS
MUD PROPERTIES AND MEASUREMENTS
Basic Properties and Measurements
The main properties of a drilling fluid are:
Density
Rheology
Fluid loss
Inhibition
Solids Content
These must be achieved in a safe and cost effective w

Circulation System & Volume
Calculations
A drilling rig is usually composed of 4 systems :
- The circulating system pumps the drilling fluids down the hole, out
of the nozzles in the drilling bit, and returns them to the surface
where the cuttings are sep

Chapter 1
Circula(on System
Drilling Solid Control
Solids removal is one of the most important
aspects of mud system control, since it has a
direct bearing on drilling eciency.
Money spent for solids control and for solving
problems related to d

Chapter 1
Water based muds
Water is the basic component of most drilling fluids.
The added clays in water based muds increase the
mud viscosity.
A reduction in penetration rate and an increase in
frictional pressure losses are observed when the clay
co

THE UNIVERSITY OF LOUISIANA
PETROLEUM ENGINEERING DEPARTMENT
DRILLING FLUIDSl PETE 382
TEST 2 Solution
PART 1: Concepts (15 points)
al
bl
dl
(1 pt)
Tripping in refers to running the drill string back in the hole and tripping out refers to
pulling the dril

University of Louisiana at Lafayette
PETE 382 : Drilling Fluids
Assignment 1 Solution
Question #1
A circulating system of 1000 bbls has a density of 12.0 lb/gal. There are 300 bbls of 10.0 lb/gal
mud in storage on the rig site. How many barrels of 10.0 lb

University of Louisiana
Department of Petroleum Engineering
Drilling Fluids, PETE382
QUIZ # 1 Solution
Question 1 (6 points)
a) List five functions of drilling fluids
1)
2)
3)
4)
5)
6)
7)
8)
(2.5 pts)
Control Subsurface Pressure
Transport Cuttings
Support

University of Louisiana
Department of Petroleum Engineering
Drilling Fluids
QUIZ # 2 SOLUTIONS
Question 1: Concepts
1. Explain briefly about plastic viscosity.
(1 pt)
Plastic Viscosity is the rate of change of shear stress with respect to shear rate. It i

University of Louisiana
at Lafayette
HW 3 Solution
Q1
Part I
Total Volume of Surface System
Three Pits:
Width
W0
=
6 ft
Length
L0
=
31 ft
Height
H0
=
7 ft
Height of mud in each pit
H1
=
64 in
=
5.333333 ft
H2
=
64 in
=
5.333333 ft
H3
=
46 in
=
3.833333 ft

UNIVERSITY OF LOUISIANA
PETROLEUM ENGINEERING
DRILLING FLUIDS, PETE 382
HW #4 SOLUTION
Q1
Define water based mud and oil based mud and state the difference between them
WBM: Drilling fluid that has water as primary base
OBM: Drilling fluid that is compose