Page 6 - Geochemistry of Oil Field Waters

CONTENTS

Preface .......................... V
Chapter 1 . Introduction .................... 1
References ......................... 5

Chapter 2 . Sampling subsurface oilfield waters ............. 7
Drill-stem test ....................... 8
Sample containing dissolved gases ................. 12
Sampling at the flow line .................... 13
Sampling at the wellhead .................... 14
Sample for determining unstable properties or species ........... 14
Sample for stable-isotope analysis ................. 15
Sample containers ...................... 16
Tabulation of sample description ................. 17
References ......................... 17

Chapter 3 . Analysis of oilfield waters for some physical properties and inorganic
chemical constituents ................. 19
Quality control ....................... 19
Preliminary sample treatment ................... 22
Reporting the analytical results .................. 25
Synthetic brine ....................... 27
Determination of pH ..................... 27
Determination of Eh ..................... 29
Suspended solids ....................... 31
Resistivity ......................... 32
Specific gravity ....................... 35
TITRIMETRIC METHODS ................... 37
Acidity. alkalinity. and borate boron ................ 37
Calcium and magnesium ........ ............ 40
Ammonium nitrogen ......... ............ 43
Chloride .............. ............ 44
Bromide and iodide .......... ............ 45
Oxygen .............. ............ 47
Carbon dioxide ........... ............ 50
Sulfide .............. ............ 51
Sulfur compounds .......... ............ 52
FLAME SPECTROPHOTOMETRIC .METHODS ............ 53
Lithium .............. ............ 54
Sodium .............. ............ 57
Potassium ............. ............ 58
Rubidium and cesium ......... ............ 59
Manganese ............. ............ 61
Strontium ............. ............ 62
Barium .............. ............ 63