1. ME Consultancy Services
Manfred Eigner
ME Consultancy Services
Drilling Fluids
5/15/2019

2. Drilling Fluids Technology
Course Objectives
Water & Oil based Drilling Fluids
Formation damage
Deep Water considerations
HP & HT systems
Mud program
5/15/2019

3. Drilling Fluids Technology
Course Objectives
At the end of this course,YOU will be able to:
Define drilling fluids applications
Understand the formation damage
Define different mud systems
Understand deep water considerations with drilling fluids
Manage a drilling fluid program.
5/15/2019

4. Water & Oil based Drilling Fluids
Section 1
Water & Oil based Drilling Fluids
5/15/2019

5. Functions & Properties
Introduction
Drilling fluid is the lifeblood of drilling operations and defined as :
Circulating fluid
Drilling fluid
Drilling fluid technology is dominated by three factors :
Performance
Economics
Environmental concerns
5/15/2019

6. Functions & Properties
Drilling Fluid Technology
The principal task of the drilling fluid is
To contribute to the success of the well construction
The drilling fluid will emphasize on :
Reservoir evaluation
Well Productivity
Hydrocarbon and Gas Recovery
5/15/2019

7. Question-1 List the Functions of a Drilling Fluid
Which ones are important for Well Control?
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8. Functions & Properties
Basic functions
All basics drilling fluids functions can be split into 3 main area’s
Control subsurface Pressures
Avoid damage to productive zones
Promote Hole cleaning
Sometimes priorities may change depending on the goals and conditions of the drilling operations
Mud lubricity, low toxicity will be adapted to drilling operations
5/15/2019

9. Properties Rheology Force causing the shearing
Viscosity
Shear Stress : Unit : Lb / 100 ft 2
Force causing the shearing
Surface of the platelet
Shear rate : Unit : 1 / sec ( reciprocal second)
Difference of velocity between 2 platelets
Distance between 2 platelets
5/15/2019