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Immiscible gas injection case studies

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Proceedings Papers

Paper presented at the SPE Oil and Gas India Conference and Exhibition, April 9–11, 2019
Paper Number: SPE-194563-MS
... Abstract Hydrocarbon gas injection into the reservoir is one of the most effective EOR processes. In case of a dipping and light oil reservoir, immiscible gas injection can give further impetus to the oil recovery. Since, average current gas saturation in the subject reservoir has become high...
Journal Articles
SPE Res Eval & Eng 20 (01): 019–029.
Paper Number: SPE-181758-PA
Published: 23 June 2016
... . Lessons Learnt from Nine Years of Immiscible Gas Injection Performance and Sector Modeling Study of Two Pilots in a Heterogeneous Carbonate Reservoir . Presented at the Reservoir Characterisation and Simulation Conference and Exhibition , Abu Dhabi , 9–11 October . SPE-147999-MS . http://dx.doi.org...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 6–9, 2015
Paper Number: IPTC-18513-MS
... . Yonebayashi , H. , Al-Mutairi , A. , Al-Habshi , A. , and Urasaki , D. 2009 . Dynamic Asphaltene Behavior for Gas Injection Risk Analysis . IPTC-13266 . International Petroleum Technology Conference . Doha . December 7–9 . IPTC-18513-MS A Case Study on Miscible and Immiscible Gas...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 13–16, 2017
Paper Number: SPE-188243-MS
... or 1 km) and (iv) injectant (miscible HC gas or immiscible HC gas). Simulation models capturing each scheme were developed. Through the injection scheme sensitivity simulation studies, it was concluded that (i) WAG, (ii) line drive, (iii) 500 m spacing and (iv) miscible HC gas were preferential to (i...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, November 28–December 1, 2021
Paper Number: SPE-204651-MS
... relative permeability ∘ weak Aquifer ∘ no boundary (flux) and capillary pressure effects Simulation Cases and Sensitivity Study The following development strategies were evaluated: Natural depletion Water injection Lean gas injection (99% C1) Rich gas injection (78% C1, 22...
Proceedings Papers

Paper presented at the OTC Brasil, October 24–26, 2017
Paper Number: OTC-28008-MS
.... The stage of adjusting pseudo relative permeability curves (gas-oil in this case, because it is the injection of only gas in oil reservoir) is equivalent to a task of history matching. In this case, starting from the coarser model, 100 × 100 m2, miscible fluid model was replaced by the immiscible one...
Proceedings Papers

Paper presented at the International Oil and Gas Conference and Exhibition in China, June 8–10, 2010
Paper Number: SPE-130593-MS
... to the compositional simulator for the model sensitivity studies. The experimentally verified MMP value of 2690 psi ( Bon et al., 2005 ) and CMG's WinProp predicted value of 3237 psia are considered in this study while deciding immiscible or miscible mode CO2 injection. The oil-water-contact (OWC) and the gas-oil...
Proceedings Papers

Paper presented at the EAGE Annual Conference & Exhibition incorporating SPE Europec, June 10–13, 2013
Paper Number: SPE-164934-MS
... scenario for recovering this trapped condensate is important. In this paper, a single matrix block surrounded by fractures is used to study the performance of a fractured gas condensate system in natural depletion, miscible and immiscible gas injection. C 1 , N 2 , CO 2 and stock-tank gas composition...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 15–18, 2021
Paper Number: SPE-207493-MS
... to study viscous fingering in waterflooding, gas injection and in WAG processes. This method had not previously been applied to immiscible gas fingering. Different cases of water injection into heavy oil have been simulated and showed strong viscous fingering in all cases, and the results are in good...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193907-MS
... behaviour. For the same pore volume of CO 2 injected, the gas saturation is much higher in the near-miscible case than in the immiscible case in the preferential routes (as indicated by the oval shapes). Under near-miscible conditions, the oil components have been mostly vaporized into the CO 2 and thus...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 14–18, 2018
Paper Number: SPE-190158-MS
... injected into the field came from the nearby gas field or captured from plant emissions. However, these gases are not without impurities. Nitrogen and methane are common impurities in CO 2 immiscible project injections. Research studies have shown that the existing impurities (nitrogen) can reduce...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 11–14, 1994
Paper Number: PETSOC-94-90
... from a waterflooding process which constitutes the base case for comparison. A sensitivity analysis study is conducted to determine the effects of CO 2 slug size, water slug size, and CO 2 injection rate for five- and nine-spot patterns and to estimate the optimum CO 2 slug size. An economic...
Proceedings Papers

Paper presented at the SPE Western Regional Meeting, April 23–27, 2017
Paper Number: SPE-185732-MS
... to accumulating the injected gas at the top of the reservoir. The oil recovery factor through the immiscible GAGD process in a 10 years of prediction period is only 15%. In addition, the GAGD process has led to a faster oil production than the primary case. This fact can be easily identified in Figure 15...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Symposium, April 14–18, 2012
Paper Number: SPE-154062-MS
... conditions for the problem the proper solution may be obtained. Immiscible flow conditions are considered for all cases. In miscible flooding, it is critical to understand the mechanisms as well as density and saturation variations at reservoir conditions. Several gas injection experiments verified...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 12–15, 2018
Paper Number: SPE-193214-MS
... applications underway, a tertiary recovery technique by immiscible hydrocarbon gas enhanced oil recovery ("HCG-EOR") had been studied since 2009. Subsequent to a successful Pilot Test in 2011, a full field scale HCG-EOR with water-alternating-gas ("WAG") scheme has been implemented since 2014. This HCG-EOR...
Proceedings Papers

Paper presented at the SPE Oil and Gas India Conference and Exhibition, January 20–22, 2010
Paper Number: SPE-128848-MS
... field. The paper also evaluates the effects of different critical parameters on the recovery factor from immiscible WAG process through reservoir simulation studies. injection wag injection water flood upstream oil & gas pilot area producer reduction saturation reservoir modeling...
Proceedings Papers

Paper presented at the SPE Reservoir Characterisation and Simulation Conference and Exhibition, October 9–11, 2011
Paper Number: SPE-147839-MS
... layers significantly reduce the performance of the gas-oil gravity drainage process for immiscible gas injection, while increasing the recoveries substantially for multiple- and first-contact miscible gas injection cases. upstream oil & gas miscibility condition gas injection displacement...
Proceedings Papers

Paper presented at the SPE Energy Resources Conference, June 9–11, 2014
Paper Number: SPE-169940-MS
... processes are also called combined water gas (CGW) injection. WAG processes can be grouped in many ways; the most common is to initially distinguish between miscible and immiscible displacements. It is difficult to distinguish between miscible and immiscible WAG. In many cases, a multicontact...
Proceedings Papers

Paper presented at the SPE Enhanced Oil Recovery Conference, July 19–20, 2011
Paper Number: SPE-144533-MS
... be used to inject the HC and the export gas of AG and NAG in BDO can be temporarily redirected to support EOR prior to full field CO2 EOR implementation. The study shows that there is little impact on the CO2 incremental reserves for an immiscible CO2 process if HC gas is injected prior to CO2 full scale...
Proceedings Papers

Paper presented at the SPE Enhanced Oil Recovery Conference, July 19–20, 2011
Paper Number: SPE-144935-MS
... such as vertical and horizontal immiscible and miscible gas injection were applied to find the optimum EOR method in one of the under-saturated Iranian fractured reservoirs. To aim this goal, a study with simulation approach was conducted while the effect of gravity drainage on recovery was investigated besides...

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