"CORRELATIONS OF VISCOSITY, DENSITY AND GAS
SOLUBILITY FOR SASKATCHEWAN HEAVY OILS"
B QUAIL G.A. HILL K.N. JHA
this article begins on the next page F
SS87-06 PETROLEUM SOCIETY OF CIM PAPER NO.
IS INVITED. SUCH DISCUSSION MAY BE PRESENTED AT THE TECHNICAL MEETING
solubility which were f~ to apply to wide variety of heM oils produced in Saskatchewan.
tlcn. An
6
THIS IS
A
PREPRINT
-
SUBJECT TO CORRECTION CORRELATIONS OF VISCOSITY, DENSITY AND GAS SOLUBILITY FOR SASKATCHEWAN HEAVY OILS by Beverly Quail, Gordon A. Hill, Dept. of Chemical Eng., University of Saskatchewan Kamal N. Jha Petroleum Division, Saskatchewan Research Council
PUBLICATION RIGHTS RESERVED THIS PAPER iS TO BE PRESENTED AT THE FIRST ANNUAL TECHNICAL MEETING OF THE SOUTH SASKAT- CHEWAN SECTION, THE PETROLEUM SOCIETY OF CIM, HELD IN REGINA, OCTOBER 6 8,1987. DISCUSSION OF THIS PAPER
-
AND WILL BE CONSIDERED FOR PUBLICATION IN CIM JOURNALS IF FILED IN WRITING WITH THE TECHNICAL PROGRAM CHAIRMAN PRIOR TO THE CONCLUSION OF THE MEETING.
U" The Beggs and Robinson equation was efied and extended to ate viscosity. new equation here
equation bY Mehrotra and Svrcek was found to be suitable for gas solubility. For oil ~ity, the Rojas equation was extended
and C02 injection. P~~ oil is usually treated to separate water and solid particles arbd then transported via pipelim or trick to further upgradirxg stations. In ordex to oo
These correlations were perfonred on three ertant physical pr~les: viscosity, gas solubility and density. The data for these 59 samples were generated aver period of by previcusly descr~ by Jha-L
mc)dified ancl extended. A1C~ many equatiam in this work, only the most ~~ful ones will be discussed here. Ref to other correlatM equatiam are descr~ by Qmil
In
order
to
design
appropriate
recovery, storage-,
for ten~e,
ticn and peing
tO handle crude oils, the engineer
sinple equations that can aetely predict
the oi-l Is physical
CH4
pre~ on rate for the next 40 years. techni~
ies.
e
~w
include
pres~
~ suitable ~tlcm for veity, density arbd gas
a
e
p
I
tion and 002
P
to aco=t for wd CH4/e
tierls-
Heavy oil in reserve of energy. ON AM represents an Fbr instance, if the
p
known reserves ed be t~ly recovered, there wmld be er~ oil to feed Cw~
-
s
=wenti~
punplm, waterfle, s~ heatim ancl
correlated agairrt variety of existirxg equations
fittirxg subroutine called MM, marketed by IMSL,
itu
cn. Some work has also been dcrie on other enhanced techmques such as polymer fl
y
estimte arbd design t~ processes, an engineer requires snple equations which will allow him to accurately predict how the crude oil Ls goim to behave.
In this work, 59 heavy crude oils colle~ fram different pr~ing areas/subareas of Saska were
.
a
previely presented in the literae.
a
p
.
All the equations presented
e
ilse e-s for vl~ity, Kelvin for
et
ture, MPa for pressure, mle
%
for gas
tlo,,, g/an3 for denrity ancl STp M3 of gas/m3 of oil for solubility. IM equations fit usirxg nm-linear, least
~
a
Homtcn, T~.
In order to ~in fits and/or to eude in the analyris, literae equatiam were
f
y
~
a,2 elsewhere.
PAPER NO.6
PETROLEUM SOCIETY OF CIM
THIS IS A PREPRINT - SUBJECT TO CORRECTION
CORRELATIONS OF VISCOSITY, DIENSITY AND GAS
SOLUBILITY FOR SASKATCHEWAN HEAVY OILS
by
Beverly Quail. Gordon A. Hill.
Dept. of Chemical Eng .. University of Saskatchewan
Kamal N. Jha
Petroleum Division. Saskatchewan Research Council
PUBLICATION RIGHTS RESERVED
THIS PAPER IS TO BE PRESENTED AT THE FIRST ANNUAL TECHNICAL MEETING OF THE SOUTH SASKAT•
CHEWAN SECTION THE PETROLEUM SOCIETY OF CIM, HELD IN REGINA, OCTOBER 6 - B, 19B7. DISCUSSION
OF THIS PAPER IS 'INVITED. SUCH DISCUSSION MAY BE PRESENTED AT THE TECHNICAL MEETING AND
WILL BE CONSIDERED FOR PUBLICATION IN CIM JOURNALS IF FILED IN WRITING WITH THE TECHNICAL
PROGRAM CHAIRMAN PRIOR TO THE CONCLUSION OF THE MEETING.
Recovere:l oil is usually treated to separate
'<ater ar:rl solid particles ar:rl then transporta:l via
In order to design aH.Jropriate recovery,
_ In
pipeline or truck to further IJj:grad:in:j stations
storage, transportation an:! processin;r systems to
har.d.le crude oils, the ergineer requires silrple
equations that can aa::urately pre:li.ct the oil's
order to correctly estiJrate an:! design these
processes, an e.rgineer requires siJrlple equations
which will allow him to a=rrately pra:tict how the
cn.xie oil is goirg to l::ehave.
physical prcperties,
'Ihis peper presents sane
suitable equations for viscx:::sity, density an::i gas
wide
solubility which were found to awly to
a
In this work, 59 heavy cn.rl.e oils collecte:i fran.
different ProJucing aIBaS/subareas of saskatchewan
variety of heavy oils prtrltJ.cej in saskatchewan.
were correlated against
a
variety of existing
TI;e Beggs ar:rl Robinson equation was modified ar:rl
equations previously presented in the literature.
'These correlations were perfo:rned on thrEe .i.rnp::>rtant
physical prcperties: viscosity, gas solubility an:!
ext.erded to correlate vi...scrsity.
'!he ne;.l equation
presente:::l here aa::exmts for terrq;:era:bJ.rB, pressure,
0:1 concentra.tion an:i CD:2 concentration. An equation
4
density
_
TI;e exper:iJrental data for these 59 samples
were generated over p=ricd of m:mths by
procedures previously described by Jha, All the
proposed by Mehrotra an:! svroek was found to I:e
suitable for gas solubility. For oil density, the
Raj as equation was ext.erded to acx::nmt for
a
equations presented here use mPa· 5 for viscosity
1
temperature an:! 0l4!OJ concentrations,
2
Kelvin for temperature., MFa for pressure, nole
gas concentration, g/cm) for density an::i SI'P
gas/m3 of oil for solubility,
%
rn3
for
of
'!he equations were fit usi.ng a non-linear, least
squarES fittin;r subroutine called ZXSSQ, narketed by
In order to obtain iJrproved
fits an::lIor to include extra irdepenc!ent parameters
in the analysis, literature equations were frEquently
modified an:! extended_ Although many equations were
re.searched in this work, only the JOOSt sucx:::essful
Heavy oil in saskatchewan represents an enornous
reserve of energy.
For instance, if the present
IMSL, Houston, Texas.
known reserves could I:e totally recavere:l, there
would I:e enough oil to feed Canada's present
consumption rate for the next 40 years.
OJrrent
recovery te::hniques i.rx::::lude conventional pumpi..rg",
wat.erflocrli.rg, steam heatirg arrl in-situ combustion.
Sarre work has also been done on other enhanced
ones will be discllssed here.
correlating equations are described by Q.Jail et al
elsewhere.
Refen!I'lCE!S to other
2
recovery techniques such as polymer floodin;r ar:rl OJ
injection.
2