BAKER HUGHES - Drilling Fluids Reference Manual

Table of Content
Gel Strengths.......................................................................................................................................1-21
Filtration..............................................................................................................................................1-22
Testing Equipment ..........................................................................................................................1-22
Permeability of Filter Cake.............................................................................................................1-23
Pressure...........................................................................................................................................1-23
Temperature ....................................................................................................................................1-23
Viscosity .........................................................................................................................................1-24
Time ................................................................................................................................................1-25
Summary.........................................................................................................................................1-25
Solids ..................................................................................................................................................1-25
Cation Exchange Capacity (CEC)...................................................................................................1-26
Low-Gravity Solids Analysis..........................................................................................................1-29
Summary.............................................................................................................................................1-30
Drilling Fluids pH and Alkalinity .......................................................................................................1-30
Example Calculations .........................................................................................................................1-33
Parameters.......................................................................................................................................1-33
Exercise...........................................................................................................................................1-33
Drill-In Fluids .....................................................................................................................................1-34
Function ..........................................................................................................................................1-34
Development...................................................................................................................................1-34
Attributes.........................................................................................................................................1-34
Screening and Selection..................................................................................................................1-34
The Proposed Drill-In and Completion Program............................................................................1-35
Leak-Off Control Tests ...................................................................................................................1-36
Return Permeability Tests...............................................................................................................1-36
Drill-In Fluid Properties......................................................................................................................1-37
Static Filtration................................................................................................................................1-37
Lubricity Testing.............................................................................................................................1-37
Particle Size Distribution ................................................................................................................1-37
Shale Inhibition (Wafer Test) .........................................................................................................1-38
Density (API Standard Practice 13B-1, June 1990)........................................................................1-38
Fluid Viscosity................................................................................................................................1-38
Water, Oil and Solids......................................................................................................................1-38
MBT (Methylene Blue Titration)....................................................................................................1-39
Filter Cake Formation and Dispersability.......................................................................................1-39
Reference Manual
Baker Hughes Drilling Fluids
ii Revised 2006