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General Information
Introduction
This manual contains installation, operation and maintenance instructions for the Chandler
Engineering Model 3065 Wettability Tester.
Purpose and Use
The Chandler Engineering Model 3065 Wettability Tester is designed to evaluate the water-
wetting capability of spacers and/or pre-flushes designed to water-wet surfaces after these
surfaces have been exposed to non-aqueous fluids, specifically oil- and synthetic-based drilling
fluids. This is accomplished by measuring the electrical conductivity between electrode
surfaces. The Model 3065 also provides all the functionality of the Model 3060 Constant
Speed Mixer.
Description
The Chandler Engineering Model 3065 Wettability Tester has all the features of the Model
3060 Constant Speed Mixer, with the addition of two electrodes in the body of the mixer to
measure the electrical conductance. Additionally, the Model 3065 is equipped with a heating
jacket to allow testing to 194
Oil-external fluids, such as oil- or synthetic-based drilling fluids, are generally not electrically
conductive, whereas water-external fluids are partially conductive. The water-external fluid to
be used in the testing (generally a spacer or pre-flush) is used to establish a reference
conductance using the Span control. The conditioned oil-based/oil-external fluid is placed in
the pre-heated cup and stirred. Water-based/water-external fluid is then added as a titrant
until the digital conductivity meter indicates a stable water-wetting state. In addition to the
digital display, the operator is able to visually ascertain the compatibility of the mud and
spacer during this test, including significant changes in viscosity as the fluids are mixed.
Features and Benefits
• Programmable temperature control
• Easy to operate, easy to clean and maintain
• Both mixer and wettability operations are easily observed via the bright digital displays
at eye level
• Broad range of sensitivity/scalability to accommodate a wide variety of fluid types
• Analog conductance output for data acquisition via a chart recorder or a computerized
system, such as Chandler's 4270 and 5270 PC based data acquisition systems
• Hardened mixing blades assure long life
• Variable speed control (1,000 to 18,000 rpm)
• Two preset constant speeds (4,000 and 12,000 rpm). The preset speeds can be easily
changed to any value between 1,000 and 18,000 rpm for applications outside API
Spec 10
• Stainless steel container can withstand abrasive action when mixing cement at high
speeds
o
F.
PREFACE
P-1
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