An Experimental Study of Acid Diversion by Using Gelled Acid Systems Based on Viscoelastic Surfactants: A Case Study on One of Iran Southwest Oilfields
Language: EnglishView: 211
This Paper With 15 Page And PDF Format Ready To Download
با استفاده از پرداخت اینترنتی بسیار سریع و ساده می توانید اصل این Paper را که دارای 15 صفحه است به صورت فایل PDF در اختیار داشته باشید.
In matrix acidizing operations, the main goal is increasing permeability. For production engineers, it is desirable that acid could be injected into whole [M.N.1] [amehri.gh2] pay zone. Sometimes, this pay zone has a long height and various sub-layers which have different permeability values. To prevent acid from going completely into the most permeable sub-layer, one of the useful techniques is using diverters, and one of the major groups of diverters is gel diverters. Diverter viscosity changes by temperature and pH, and an increase in viscosity leads to a decrease in its permeability; thus, acid can permeate further through less permeable sub-layers. In this study, two kinds of different viscoelastic surfactants (VES) provided by two different companies were used to produce gel to divert acid into a core plug sample having lower permeability in a dual parallel acid injection set-up. The core plug samples were taken from the pay zone of Ahwaz oilfield, one of Iran southwest oilfields. Before performing the injection test, some viscosity measurement tests were carried out. Unfortunately, one of these two VES’s did not have an acceptable quality and failed to pass the injection tests. However, the other one passed all the tests successfully and diverted the injection fluid. The water permeability values of the low-perm and high-perm core plug samples were 0.91 md and 6.4 md respectively, whereas, after injection, they rose to 1.5 and 18.5 md respectively.
Carbonate Acidizing, Multi-layered Reservoirs, Diverters, Gels, Viscoelastic Surfactants
Paper COI CodeThis Paper COI Code is JR_IJOGST-8-1_003. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:
How to Cite to This Paper:
If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Mehri Ghahfarrokhi, Abdorrahman and Kazemzadeh, Ezzatollah and Shokrollahzadeh Behbahani, Hassan and Safian, Gholam Abbas,1398,An Experimental Study of Acid Diversion by Using Gelled Acid Systems Based on Viscoelastic Surfactants: A Case Study on One of Iran Southwest Oilfields,,,,,https://civilica.com/doc/896174
مراجع و منابع این Paper:لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :
Ahmed, W. A. F., Nasr-El-Din, H. A., Moawad, T. M., ...Al-Sadat, W., Nasser, M., Chang, F., Nasr-El-Din, H., and Hussein, ...Bradley, H. B. Petroleum Engineering Handbook, Society of Petroleum Engineers, ...Carpenter, C., Self-Diverting Acid for Effective Carbonate Stimulation Offshore Brazil, ...Chang, F., Qu, Q. and Frenier, W., A Novel Self-diverting-acid ...Farajzadeh, R., Andrianov, A., Bruining, J. and Zitha, P. L. ...Gomaa, A. M. and Nasr-El-Din, H. A., New Insights into ...Gomaa, A. M. and Nasr-El-Din, H. A., Propagation of Regular ...Hull, K. L., Sayed, M. and Al-Muntasheri, G. A., Recent ...Kalfayan, L., Production Enhancement with Acid Stimulation, Pennwell Books, South ...Magee, J., Buijse, M. And Pongratz, R., Method for Effective ...McLeod, H. O., Matrix acidizing, Journal of Petroleum Technology, Vol. ...Miniawi, M. A., Ahmed, W. A. F., Ali, Y., and ...Mumallah, N., Factors Influencing the Reaction Rate of Hydrochloric Acid ...Nasr-El-Din, H. A., Chesson, J. B., Cawiezel, K. E. and ...Norman, L. R., Conway, M. W. And Wilson, J. M., ...Shu, Y., Wang, G., Nasr-El-Din, H. A. and Zhou, J., ...Smith, C. L., Anderson, J. L. and Roberts, P., New ...Van Zanten, R., Stabilizing Viscoelastic Surfactants in High-Density Brines, SPE ...White, G., The Use of Temporary Blocking Agents in Fracturing ...