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Keywords: efficiency
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Proceedings Papers

Paper presented at the International Thermal Operations and Heavy Oil Symposium, October 20–23, 2008
Paper Number: SPE-117649-MS
... of the core. It is shown that this design of AS injection in heavy oil leads to improved sweep efficiency of the flood. This corresponds to lower apparent relative permeability values to the aqueous phase, and a discussion is provided regarding how AS floods can be controlled and optimized. In any heavy oil...
Proceedings Papers

Paper presented at the International Thermal Operations and Heavy Oil Symposium, October 20–23, 2008
Paper Number: SPE-117677-MS
... particles to bitumen droplets and promotes attachment of air bubbles to the liberated bitumen droplets; which all result in increase in the efficiency of bitumen extraction ( Kasperski, 2001 ; Masliyah et al., 2004 ). In the present study performance of a non-caustic bitumen extraction process...
Proceedings Papers

Paper presented at the International Thermal Operations and Heavy Oil Symposium, October 20–23, 2008
Paper Number: SPE-117563-MS
... commercial electrocoalescence processes have a low efficiency for Extra Heavy Oils because of the presence of polar heavy components limiting the electrocalescence effect and consequently limiting the efficiency of electrostatic coalescer. The objective is to determine the most efficient electrocoalescence...
Proceedings Papers

Paper presented at the International Thermal Operations and Heavy Oil Symposium, October 20–23, 2008
Paper Number: SPE-117853-MS
... representing the expected operating situation from the design choices made. The data provided in this paper can be used a validation point for vacuum column designs with unconventional crudes. bitumen temperature increase pressure drop unconventional crude oil sand Vacuum Unit Efficiency offgas...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, November 1–3, 2005
Paper Number: SPE-97511-MS
... optimal ratio rlo mixed power fluid reduction surface facility pressure loss equilibrium viscosity east china determination completion installation and operations zhang prespecified accuracy viscosity petroleum efficiency application tarim petroleum ltd spe ps-cim choa 97511...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, November 1–3, 2005
Paper Number: SPE-97338-MS
... gasification processes are described in the literature. Gasification processes can make more efficient use of the energy content, and they reduce atmospheric emissions. The comparison considers cost, energy efficiency, and environmental impact of the two transportation options on a "well/mine to wheels" basis...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, November 1–3, 2005
Paper Number: SPE-97763-MS
... on the viscosity reduction efficiency. In particular we show that the addition of a polar solvent to a solution of asphaltenes in toluene acts on the colloidal structure of the asphaltenes. The relative viscosity of the solution decreases, as well as the size of the aggregates of asphaltenes. In the same way...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, November 1–3, 2005
Paper Number: SPE-97796-MS
... production. viscosity stator cpo pcp prototype leakage pcm spe ps-cim choa 97796 efficiency artificial lift system elastomer rotor flowrate slippage deltap upstream oil & gas volumetric efficiency rpm heavy oil reservoir surveillance enhanced recovery production monitoring...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, November 1–3, 2005
Paper Number: SPE-97797-MS
... been investigated. The results show that injecting high temperature steam into reservoir can not only reduce the viscosity of waxy oil, but also lead to the thermal expansion of the underground fluid and the distillation of the crude oil. The combining effect can improve sweep efficiency and enhance...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, November 1–3, 2005
Paper Number: SPE-97786-MS
... relative performance hvdc ac ed technology crude dehydration system brine ac system upstream oil & gas mhvdc ac pilot scale test throughput emulsion throughput rate electrode configuration separation and treating efficiency rock/fluid interaction oilfield chemistry throughput relative...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, November 1–3, 2005
Paper Number: SPE-97850-MS
... an increase in oil recovery of 93% with TINBOP compared to conventional cyclic steam injection. The improved thermal efficiency with TINBOP – i.e. more heat is retained in the reservoir than under conventional cyclic steam injection - is evident from the higher reservoir temperatures under TINBOP ( Fig. 5...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference, November 4–7, 2002
Paper Number: SPE-78988-MS
... of an oil reservoir and the investigations were designed specifically for a comparative study of vertical sweep efficiency for conventional waterflooding and toe-to-heel waterflooding. These experiments do not permit an evaluation of areal sweep efficiency. In fact, two toe-to-heel processes were explored...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference, November 4–7, 2002
Paper Number: SPE-78989-MS
... Abstract Using horizontal wells in a waterflooding process, a higher sweep efficiency for less cost is expected as opposed to the use of classical patterns by vertical wells. However, the use of horizontal wells is very sensitive to the well pattern designed to operate such a process. The paper...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference, November 4–7, 2002
Paper Number: SPE-79008-MS
... in place and to withstand conditions TC #4: Wellhead & surface equipment able to withstand conditions TC #5: Tubing & completions equipment and perforations able to withstand conditions TC #6: To achieve overall well efficiency TC #7: Integrity kept throughout life-cycle...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference, November 4–7, 2002
Paper Number: SPE-78997-MS
... Abstract The idea of using serial arrangements of sucker rod pumps to efficiently produce heavy oil wells with high gas to oil ratio has been analyzed in Venezuela since 1996. However, models to calculate the dimensions of the required plungers have not been presented in previous literature...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, March 12–14, 2001
Paper Number: SPE-69711-MS
... in this study was first to understand the role of asphaltenes in these high viscosities and secondly to evaluate the viscosity reduction efficiency when blending with different diluents. Many previous works studied asphaltene associations in simple organic solvents like toluene or toluene/heptane mixtures...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, March 12–14, 2001
Paper Number: SPE-69848-MS
..., with no downhole diluent can produce up to 2,500 bpd at moderate intake pressures (> 500 psi). Calculation of free gas volume at intake conditions allows an estimation of expected PCP volumetric efficiency. Combination of instrumentation and control facilities installed at Zuata field allows a high level...
Proceedings Papers

Paper presented at the International Thermal Operations/Heavy Oil Symposium, March 17–19, 1999
Paper Number: SPE-54107-MS
.... Both units were fired using sales utility gas. Increased combustion efficiency and improved heat transfer reduced fuel gas consumption by 33% and cut GHG emissions by 40%. In phase two of the testing, the prototype successfully burned solution gas normally vented to atmosphere. This translates...
Proceedings Papers

Paper presented at the International Thermal Operations/Heavy Oil Symposium, March 17–19, 1999
Paper Number: SPE-54078-MS
..., steam generation and distribution, injection and production facilities, and performance prediction. These advances helped increase oil recovery, extend the process application to wider ranges of reservoirs and fluids, and improve the process efficiency (e.g., reduce operating costs). This paper...
Proceedings Papers

Paper presented at the International Thermal Operations/Heavy Oil Symposium, March 17–19, 1999
Paper Number: SPE-54115-MS
...-stroke units were expected to offer. Field tests have in fact shown that these units can increase daily production rates through better pump efficiencies and longer stroke lengths, while reducing the amount of power consumed and thus operating cost. Other benefits include reduced wear in downhole pump...

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