Improving Hydraulic Fracturing Fluids Through Dual Polymer Technology
- Tariq Almubarak (Texas A&M University) | Jun Hong Ng (Texas A&M University) | Khatere Sokhanvarian (Sasol Performance Chemicals, Texas A&M) | Mohammed AlKhaldi (Saudi Aramco EXPEC ARC) | Hisham Nasr-El-Din (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE Annual Technical Conference and Exhibition, 24-26 September, Dallas, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petroleum Engineers
- 2 Well completion, 2.5.2 Fracturing Materials (Fluids, Proppant), 4.3.1 Hydrates, 3 Production and Well Operations, 2.4 Hydraulic Fracturing
- Fracturing Fluid, Synthetic polymer, Low loading, High temperature, Dual polymer
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As exploration for oil and gas continues, it becomes necessary to produce from formations that are deeper, have low permeability, and higher temperature. Conventionally, guar and its derivatives have been successfully utilized as hydraulic fracturing fluids. However, they require higher polymer loading to withstand the high-temperature environments. This leads to an increase in mixing time and additive requirements. Most importantly, they do not break completely and generate residual polymer fragments that can plug the formation and reduce fracture conductivity significantly.
In this work, a new hybrid dual polymer hydraulic fracturing fluid is developed for high-temperature applications. The fluid consists of a guar derivative and a polyacrylamide-based synthetic polymer. Compared to conventional fracturing fluids, this new system is easily hydrated, requires fewer additives, can be mixed on the fly, and is capable of maintaining excellent rheological performance at low polymer loadings.
The polymer mixture solutions were prepared at concentrations ranging from 20 to 40 lb/1,000 gal at a ratio of 2:1, 1:1, and 1:2. The fluids were crosslinked with a metallic crosslinker and broken with an oxidizer at 300-350°F. Testing focused on crosslinker to polymer ratio analysis to effectively lower loading while maintaining sufficient performance to carry proppant at these harsh conditions. HP/HT rheometer was used to measure viscosity and elastic modulus. HP/HT see-through cell was utilized for proppant settling.
Results indicate that the dual polymer fracturing fluid is able to generate stable viscosity at 300-350°F and 100 s−1. Results show that the dual polymer fluid can generate higher viscosity compared to the individual single polymer system. Also, properly understanding and tuning the crosslinker to polymer ratio generates excellent performance even at 20 lb/1,000 gal. The two polymers form a shared crosslinking network that improves proppant carrying capacity at lower polymer loadings and high temperatures. It also demonstrates a clean and controlled break performance with an oxidizer.
The major benefit of using a mixed polymer system is to reduce polymer loading at harsher conditions. Lower loading is highly desirable because it reduces material cost, eases field operation and lowers damage to the fracture face, proppant pack and formation.
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Almubarak, T., M. AlKhaldi, S. Panda. 2015. Insights On Potential Formation Damage Mechanisms Associated With Hydraulic Fracturing. Presented at the International Petroleum Technology Conference, 6-9 December, Doha, Qatar. IPTC-18401-MS. https://doi.org/10.2523/IPTC-18401-MS.
Almubarak, T., Ng, J., Sokhanvarian, K. 2018a. Development of a Mixed Polymer Hydraulic Fracturing Fluid for High Temperature Applications. Unconventional Resources Technology Conference, Houston, Texas. https://doi.org/10.15530/URTEC-2018-2896329.
Cai, S., He, X., Liu, K. 2017. Macromolecular Interactions and Synergy in Xanthan/HPAM Aqueous Solutions. RSC journal, 7: 41630–41639. https://doi.org/10.1039/c7ra05542k.
Clark, P., Halvaci, M., Ghaeli, H. 1985. Proppant Transport by Xanthan and Xanthan-Hydroxypropyl Guar Solutions: Alternatives to Crosslinked Fluids. Presented at the SPE/DOE Low Permeability Gas Reservoirs Symposium, Denver, Colorado, 19-22 March. SPE-13907-MS. https://doi.org/10.2118/13907-MS.
Fischer, C., Navarrete, R., Constien, V. 2001. Novel Application of Synergistic Guar/Non-Acetylated Xanthan Gum Mixtures in Hydraulic Fracturing. Presented at the SPE International Symposium on Oilfield Chemistry, Houston, Texas, 13-16 February. SPE-65037-MS. https://doi.org/10.2118/65037-MS
Guo, J., Lu, H., Zhou, B. 2012. A New Fracturing Fluid of Low Concentration. Presented at the SPE IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, Tianjin, China, 9-11 July. SPE-155970-MS. http://doi.org/10.2118/155970-MS.
Habibpour, M. and Clark, P. 2017. Drag reduction behavior of hydrolyzed polyacrylamide/xanthan gum mixed polymer solutions. Pet. Sci. 14 (1): 412–423. DOI 10.1007/s12182-017-0152-7
Harris, P., Morgan, R., and Heath, S. 2005. Measurement of Proppant Transport of Frac Fluids. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, 9-12 October. SPE-95287-MS. http://doi.org/10.2118/95287-MS.
Holtsclaw, J., Galindo, G., and Chopade, P. 2017. Next-Generation Boron-Crosslinked Fracturing Fluids: Breaking the Lower Limits on Polymer Loadings. SPE Prod & Oper 32 (4): 440–448.SPE-174988-PA. https://doi.org/10.2118/174988-PA.
Hornof, V., Neale, G., and Chaaraoui, A. 1983. Viscosity of Surfactant-Polymer Solutions. Presented at the SPE Oilfield and Geothermal Chemistry Symposium, Denver, Colorado, 1-3 June. SPE-11775-MS. https://doi.org/10.2118/11775-MS
Legemah, M., Guerin, M, Sun, H. 2014. Novel High-Efficiency Boron Crosslinkers for Low-Polymer-Loading Fracturing Fluids. SPE J. 19 (4): 737–743.SPE-164118-PA. http://doi.org/10.2118/164118-PA.
Lei, C. and Clark, P. E. 2007. Crosslinking of Guar and Guar Derivatives. SPE J. 12 (3): 316–321.SPE-90840-PA. http://doi.org/10.2118/90840-PA.
Liang, F. and Al-Muntasheri, G., Hooisweng, O. 2017. Reduced-Polymer-Loading, High-Temperature Fracturing Fluids by Use of Nanocrosslinkers. SPE J. 22 (2): 622–631.SPE-177469-PA. https://doi.org/10.2118/177469-PA.
Loveless, D., Holtsclaw, J., Saini, R. 2011. Fracturing Fluid Comprised of Components Sourced Solely From the Food Industry Provided Superior Proppant Transport. Presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, 30 October-2 November. SPE-147206-MS. http://doi.org/10.2118/147206-MS.
Loveless, D., Holtsclaw, J., Weaver, J. 2014. Multifunctional Boronic Acid Crosslinker for Fracturing Fluids. Presented at the International Petroleum Technology Conference, Doha, Qatar, 19-22 January. SPE-17404-MS. https://doi.org/10.2523/IPTC-17404-MS.
Malik, A., Bolarinwa, S., Leal, J. 2013. Successful Application of Metal-Crosslinked Fracturing Fluid with Low-Polymer Loading for High temperature Proppant Fracturing Treatments in Saudi Arabian Gas Fields - Laboratory and Field Study. Presented at the SPE Middle East Oil and Gas Show and Conference, Manama, Bahrain, 10-13 March. SPE-164338-MS. http://doi.org/10.2118/164338-MS.
Sun, H. and Qu, Q. 2011. High-Efficiency Boron Crosslinkers for Low-Polymer Fracturing Fluids. Presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, USA, 11-13 April. SPE-140817-MS. https://doi.org/10.2118/140817-MS.
Wang, K., Wang, Y., Ren, J. 2017. Highly Efficient Nano Boron Crosslinker for Low-Polymer Loading Fracturing Fluid System. Presented at the SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition, Jakarta, Indonesia, 17-19 October. SPE-186943-MS. https://doi.org/10.2118/186943-MS.
Williams, N., Kelly, P., Berard, K. 2012. Fracturing Fluid with Low-Polymer Loading Using a New Set of Boron Crosslinkers: Laboratory and Field Studies. Presented at the SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, 15-17 February. SPE-151715-MS. http://doi.org/10.2118/151715-MS.
Yang, J., Cui, W, Guan, B. 2016. Supramolecular Fluid of Associative Polymer and Viscoelastic Surfactant for Hydraulic Fracturing. SPE Prod & Oper. 31 (4): 318–324.SPE-175762-PA. https://doi.org.ezproxy.library.tamu.edu/10.2118/175762-PA.