Transcript Training

Manfred Eigner
ME Consultancy Services
Drilling Fluids
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7/17/2015
Drilling Fluids Technology
– Course Objectives
– Water & Oil based Drilling Fluids
– Formation damage
– Deep Water considerations
– HP & HT systems
– Mud program
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7/17/2015
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.
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7/17/2015
Section 1
Water & Oil based Drilling Fluids
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7/17/2015
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
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7/17/2015
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
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7/17/2015
Question-1
List the Functions of a Drilling Fluid
 Which ones are important for Well
Control?

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7/17/2015
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
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7/17/2015
Properties
Rheology
– 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
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7/17/2015