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Modeling of oil treatment process at R. Trebs oil field

UDK: 622.276.8
DOI: 10.24887/0028-2448-2018-7-117-119
Key words: oil, oil treatment, physicochemicall oil properties, kinetics of destruction of oil-water emulsion
Authors: E.R. Bashirova (BashNIPIneft LLC, RF, Ufa), A.G. Mikhaylov (BashNIPIneft LLC, RF, Ufa), I.M. Khusnullin (BashNIPIneft LLC, RF, Ufa)

The modeling of an efficiency of oil treatment process at the Central Processing Facility (CPF) of R. Trebs oil field, taking into account the increase in share of wells exploiting D3src2 reservoir has been considered. The influence of oil from D3src2 reservoir on response in the physicochemical composition of oil, the kinetic of water-oil emulsion destruction and the possibility of oil treatment process was determined. It has been established that an increase in share of oil from this reservoir in total production will lead to an increase in the density of oil from 0.818 to 0.837 g/cm3, an increase in the content of asphaltenes in oil from 0.8 to 2.0 %, and an increase in the dynamic viscosity of the resulting emulsion from 38.7 to 196 mPa.s as well. A change in the type of water-oil emulsion stabilizer has been predicted, which will pass from the paraffinic to the mixed type, that will lead to an increase in resistance to the destruction of water-oil emulsion.

Based on the results of simulation of oil dehydration and desalting process, the necessary parameters have been obtained for the oil treatment process and for possibility obtaining of oil for the first quality group. Reagents for the study of de-emulsification were taken by those that are currently used at CPF. After carrying out the thermal calculation of the CPF equipment it was noted that the projected heaters quantity would not allow liquid to be heated to a temperature that would effectively separate the water and produce commercial grade oil. The heat recuperation technology for oil treatment at CPF without increasing capacity and heating equipment is proposed. The installation of the heat exchanger, due to heat transfer from commercial oil, will increase inlet flow temperature at the inlet of oil heating furnaces by an additional 8-15°C.

References

1. Sakhabutdinov R.Z., Gubaydulin F.R., Ismagilov I.Kh., Kosmacheva T.F., Osobennosti formirovaniya i razrusheniya vodoneftyanykh emul'siy na pozdney stadii razrabotki neftyanykh mestorozhdeniy (Features of formation and destruction of oil-water emulsions at a late stage of oil field development), Moscow: Publ. of OAO “VNIIOENG”, 2005, 324 p.

2. Pozdnyshev G.N., Stabilizatsiya i razrushenie neftyanykh emul'siy (Stabilization and destruction of oil emulsions), Moscow: Nedra Publ., 1982, 221 p.

3. Baykov N.M., Pozdnyshev G.H., Mansurov R.I., Sbor i promyslovaya podgotovka nefti, gaza i vody (Gathering and field treatment of oil, gas and water), Moscow: Nedra Publ, 1981, 261 p.

The modeling of an efficiency of oil treatment process at the Central Processing Facility (CPF) of R. Trebs oil field, taking into account the increase in share of wells exploiting D3src2 reservoir has been considered. The influence of oil from D3src2 reservoir on response in the physicochemical composition of oil, the kinetic of water-oil emulsion destruction and the possibility of oil treatment process was determined. It has been established that an increase in share of oil from this reservoir in total production will lead to an increase in the density of oil from 0.818 to 0.837 g/cm3, an increase in the content of asphaltenes in oil from 0.8 to 2.0 %, and an increase in the dynamic viscosity of the resulting emulsion from 38.7 to 196 mPa.s as well. A change in the type of water-oil emulsion stabilizer has been predicted, which will pass from the paraffinic to the mixed type, that will lead to an increase in resistance to the destruction of water-oil emulsion.

Based on the results of simulation of oil dehydration and desalting process, the necessary parameters have been obtained for the oil treatment process and for possibility obtaining of oil for the first quality group. Reagents for the study of de-emulsification were taken by those that are currently used at CPF. After carrying out the thermal calculation of the CPF equipment it was noted that the projected heaters quantity would not allow liquid to be heated to a temperature that would effectively separate the water and produce commercial grade oil. The heat recuperation technology for oil treatment at CPF without increasing capacity and heating equipment is proposed. The installation of the heat exchanger, due to heat transfer from commercial oil, will increase inlet flow temperature at the inlet of oil heating furnaces by an additional 8-15°C.

References

1. Sakhabutdinov R.Z., Gubaydulin F.R., Ismagilov I.Kh., Kosmacheva T.F., Osobennosti formirovaniya i razrusheniya vodoneftyanykh emul'siy na pozdney stadii razrabotki neftyanykh mestorozhdeniy (Features of formation and destruction of oil-water emulsions at a late stage of oil field development), Moscow: Publ. of OAO “VNIIOENG”, 2005, 324 p.

2. Pozdnyshev G.N., Stabilizatsiya i razrushenie neftyanykh emul'siy (Stabilization and destruction of oil emulsions), Moscow: Nedra Publ., 1982, 221 p.

3. Baykov N.M., Pozdnyshev G.H., Mansurov R.I., Sbor i promyslovaya podgotovka nefti, gaza i vody (Gathering and field treatment of oil, gas and water), Moscow: Nedra Publ, 1981, 261 p.



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