Mobility control experience in the Joffre Viking miscible carbon dioxide flood

Stephenson, D.J.; Graham, Andrew G.; Luhning, R.W.

doi:10.3997/2214-4609.201411258

Cited by 11 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The improved gas handling and oil recovery have been reported for SWAG injection at Siri field (Berg et al 2002 andQuale et al 2000), the Joffre Viking (Stephenson et al 1993) CO 2 miscible flood and SWAG emulation at the Rangely CO 2 miscible flood (Attanucci et al 1993). Pilot tests performed on Kuparuk River Field in Alaska Stoisits et al 1995) have also demonstrated the feasibility of SWAG injection.…”

mentioning

confidence: 68%

“…SWAG appears to provide better control of gas mobility than WAG, resulting in improved sweep efficiency in addition to more steady gas production and GOR response (Stephenson et al 1993). In some oil reservoirs (especially offshore) a relatively small amount of produced gas and/or a rapidly falling gas rate makes it uneconomical to develop a gas export solution.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Visualisation of Residual Oil Recovery by Near-miscible Gas and SWAG Injection Using High-pressure Micromodels

2008

View full text Add to dashboard Cite

We present results of high-pressure micromodel visualizations of pore-scale fluid distribution and displacement mechanisms during the recovery of residual oil by nearmiscible hydrocarbon gas and SWAG (simultaneous water and gas) injection under conditions of very low gas-oil IFT (interfacial tension), negligible gravity forces and water-wet porous medium. We demonstrate that a significant amount of residual oil left behind after waterflooding can be recovered by both near-miscible gas and SWAG injection. In particular, we show that in both processes, the recovery of the contacted residual oil continues behind the main gas front and ultimately all of the oil that can be contacted by the gas will be recovered. This oil is recovered by a microscopic mechanism, which is strongly linked to the low IFT between the oil and gas and to the perfect spreading of the oil over water, both of which occur as the critical point of the gas-oil system is approached. Ultimate oil recovery by near-miscible SWAG injection was as high as near-miscible gas injection with SWAG injection using much less gas compared to gas injection. Comparison of the results of SWAG experiments with two different gas fractional flow values (SWAG ratio) of 0.5 and 0.2 shows that fractional flow of the near-miscible gas injected simultaneously with water is not a crucial factor for ultimate oil recovery. This makes SWAG injection an attractive IOR (improved oil recovery) process especially for reservoirs, where continuous and high-rate gas injection is not possible (e.g. due to supply constraint).

show abstract

mentioning

confidence: 68%

mentioning

confidence: 99%

Visualisation of Residual Oil Recovery by Near-miscible Gas and SWAG Injection Using High-pressure Micromodels

2008

View full text Add to dashboard Cite

show abstract

“…The IOR has been reported for Simultaneous Water And Gas (SWAG) injection at Siri Field (Berge et al 2002;Quale et al 2000), the Joffre Viking CO 2 miscible flood (Stephenson et al 1993) and SWAG emulation at the Rangely CO 2 miscible flood (Attanucci et al 1993). Pilot tests performed in the Kuparul River Field in Alaska (Stoisits et al 1995;Ma et al 1995) have also demonstrated the feasibility of SWAG injection.…”

Section: Introductionmentioning

confidence: 79%

Analytical Modeling for Gravity Segregation in Gas Improved Oil Recovery of Tilted Reservoirs

Jamshidnezhad

Ghazvian

2010

Transp Porous Med

View full text Add to dashboard Cite

Stone's model for gravity segregation in gas improved oil recovery (IOR) indicates the distance that injected gas and water travel together before the segregation being completed (length of complete segregation). This model is very useful for co-injection of water and gas into horizontal depleted reservoirs. A proof by Rossen and van Duijn showed that Stone's model applies to steady-state gas-liquid flow, and also foam flow, in horizontal reservoirs as long as the standard assumptions of fractional flow theory (incompressible flow, Newtonian mobilities, local equilibrium) are applied. However, until now, there has been no analytical study on the length of segregation when co-injection of water and gas occurs in tilted reservoirs. In this article, in order to extent the validity of Stone's model to tilted reservoirs, governing equations of fluids displacement based on fractional flow theory are solved by the method of characteristics, MOC. The results are then compared to Stone's model and to the results of a three-dimensional finite-difference compositional reservoir simulator. This study shows that Stone's model should be corrected for tilted reservoirs and that the presented math proof can model gravity segregation in gas IOR of tilted reservoirs, appropriately. The effect of co-injecting of water and gas into tilted reservoirs on recovery efficiency is also examined.

show abstract

“…4 Results of the mobility control test at Joffre Viking C02 miscible flood indicated that simultaneous C02/water injection at water/C02 ratios approaching one resulted in improved sweep compared with water-alternating-C02 injection and continuous C02 injection. If fcasiblẽ~A~w~u ld eliminate the need for separate watcr and gal DJection hnes to the drill sites and gas distribution S\'stems to the wells.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Water and Gas Injection Pilot at the Kuparuk River Field, Reservoir Impact

Rugen

Stoisits

et al. 1995

Proceedings of SPE Annual Technical Conference and Exhibition

View full text Add to dashboard Cite

Mobility control experience in the Joffre Viking miscible carbon dioxide flood

Cited by 11 publications

References 0 publications

Visualisation of Residual Oil Recovery by Near-miscible Gas and SWAG Injection Using High-pressure Micromodels

Visualisation of Residual Oil Recovery by Near-miscible Gas and SWAG Injection Using High-pressure Micromodels

Analytical Modeling for Gravity Segregation in Gas Improved Oil Recovery of Tilted Reservoirs

Simultaneous Water and Gas Injection Pilot at the Kuparuk River Field, Reservoir Impact

Contact Info

Product

Resources

About