The effect of cations on gelation of cross-linked polymers

被引：0
|
作者：
Sedaghatzadeh M. [1 ]
Shahbazi K. [2 ]
Pourafshary P. [3 ]
Razavi S.A. [2 ]
机构：
[1] National Iranian Drilling Company, Ahvaz
[2] Petroleum University of Technology, Abadan
[3] School of Mining and Geosciences, Nazarbayev University, Astana
来源：
Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development | 2019年 / 46卷 / 04期
关键词：
Cation; Cross-linked polymer; Gel system; Multi-walled carbon nano-tubes; Rheological property; Stability;
D O I：
10.11698/PED.2019.04.18
中图分类号：
学科分类号：
摘要：
The effects of different cation concentrations and types on rheological property and stability of Guar, Xanthan, and Partially Hydrolyzed Polyacrylamide (HPAM) cross-linked gels were analyzed through experiments. Also, a new approach was developed to reduce the negative effects of cation by application of multi-walled carbon nano-tubes (MWCNTs). The presence of cations in cross-linked gel system will reduce the viscosity of gel, the higher the cation concentration is, the lower the viscosity will be. The bivalent cation has a greater viscosity reduction effect on gel than monovalent cation. The stability of cross-linked gels is worse with cations, this situation becomes more serious under higher salinity. MWCNTs were added to HPAM gel, cross-linked by (3-Aminopropyl) triethoxysilane (APTES), they surrounded cations and removed them from polymers and reduced the reaction possibility. This method enhances the viscosity and breakdown pressure of cross-linked gels, improves the stability of HPAM cross-linked gel under different operating conditions, and can be applied to related drilling projects. © 2019, The Editorial Board of Petroleum Exploration and Development. All right reserved.
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页码：782 / 788and802
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共 19 条
  • [1] Brutton J.R., Ivan C.D., Heinz T.J., Lost circulation control: Evolving techniques and srategies to reduce downhole mud losses, (2001)
  • [2] Caughron D.E., Renfrow D.K., Bruton J.R., Et al., Unique crosslinking pill in tandem with fracture prediction model cures circulation losses in deepwater Gulf of Mexico, (2002)
  • [3] Mokhtari M., Ozbayoglu M.E., Laboratory investigation on gelation behavior of xanthan crosslinked with borate intended to combat lost circulation, (2010)
  • [4] Barati R., Liang J.T., A review of fracturing fluid systems used for hydraulic fracturing of oil and gas wells, Journal of Applied Polymer Science, 131, 16, pp. 318-323, (2014)
  • [5] Economides M.J., Nolte K.G., Reservoir Stimulation, (2000)
  • [6] Harris P.C., Chemistry and rheology of borate-crosslinked fluids at temperatures to 300 ℉, (1993)
  • [7] Parris M.D., Mackay B.A., Rathke J.W., Et al., Influence of pressure on boron cross-linked polymer gels, Macromolecules, 41, 21, pp. 8181-8186, (2008)
  • [8] Moradi-Araghi A., A review of thermally stable gels for fluid diversion in petroleum production, Journal of Petroleum Science and Engineering, 26, 1, pp. 1-10, (2000)
  • [9] Moradi-Araghi A., Doe P.H., Hydrolysis and precipitation of polyacrylamides in hard brines at elevated temperatures, SPE Reservoir Engineering, 2, 2, pp. 189-198, (1987)
  • [10] Moradi-Araghi A., Doe P.H., Stability of polyacrylamides in hard brines at elevated temperatures, (1984)
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