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Ghaniyari Benis, Saeid

, Doctor of Philosophy, University of Akron, Chemical Engineering.
The shale shaker has been used in the drilling industry for many years for
removing sand and coarse particles from drilling fluids. The performance envelopes of
most shale shakers were determined empirically. Systematic empirical studies of full
scale shakers are difficult and expensive to conduct due to the high volumetric flow
rates of drill fluid and coarse materials flowing through the shaker. In a recent effort to
reduce the experimental costs, a bench scale shale shaker provided by M-I SWACO
was tested. As an initial performance characterization of the bench scale shaker, the
bench scale shaker was evaluated in the separation of sand from a sand-water slurry. In
a shale shaker operation, the coarse particles form a cake on the screen as the liquid
phase flows through the cake and through the screen. The vibrations move the cake of
solids forward on the screen until the cake falls off the end of the screen.
The operating envelope of the bench scale shaker was developed for separating
2, 4, and 6 % concentrations by mass of sand in water for variations of vibration
frequency, deck angle, and vibration acceleration. The results showed that the flow rate
of liquid leaving at the bottom of screen and velocity of the wet sand cake exiting the
screen decreased with deck angle and increased with acceleration. The cake velocity
increased with the vibration frequency and resulted in in thinner sand cakes on the
screen. The moisture contents of the exiting sand cakes were strongly dependent on
the frequency, moderately dependent on the acceleration, and were weakly dependent
on deck angle.
In the second phase of this research, the prior continuum model of the cake is
improved and model calculations are compared with experimental data from a benchscale
shale shaker (M-I SWACO, A Schlumberger Company).
Few studies have been published on the performance of shale shakers.
Experimental studies of shale shaker performance have been limited for several
reasons, but mainly because they are time consuming and expensive to conduct. The
slurries of fine and coarse particles tend to settle with gravity making consistency of the
solids concentrations very difficult to achieve with the large volumes of fluid required
during the operation of a full scale shale shaker.
To overcome some of the experimental issues of a full scale shaker a custom
made small scale shaker was fabricated and tested. To evaluate the small scale shaker
performance without the variabilities introduced by the presence of clay particles, the
experiments were conducted with sand as the coarse particles and water as the liquid
phase. The small scale shaker reduced the operating time needed to reach steady
state and it reduced the volume of liquid required for the operation. The results of this
work will serve as a baseline for the shaker performance for comparison in future works
with fluids containing fine clay.
George Chase, Dr (Advisor)

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Ghaniyari Benis, S. (). PERFORMANCE STUDY OF A BENCH SCALE SHALE SHAKER. (Electronic Thesis or Dissertation). Retrieved from

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Ghaniyari Benis, Saeid. "PERFORMANCE STUDY OF A BENCH SCALE SHALE SHAKER." Electronic Thesis or Dissertation. University of Akron, . OhioLINK Electronic Theses and Dissertations Center. 18 Sep 2018.

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Ghaniyari Benis, Saeid "PERFORMANCE STUDY OF A BENCH SCALE SHALE SHAKER." Electronic Thesis or Dissertation. University of Akron, .


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