Experimental Study to Investigate the Effect of Polyacrylamide Gel to Reduce the Lost Circulation


  • Ali K. Al-Delfi Petroleum Engineering Department, College of Engineering, University of Baghdad, Iraq
  • Faleh H. M. Al-Mahdawi Petroleum Engineering Department, College of Engineering, University of Baghdad, Iraq
  • Yasir Mukhtar University of Petroleum, Beijing, China
  • Yousif Eltahir Bagadi University of Science and Technology, Sudan




lost circulation, Lost Circulation Materials (LCM), Polyacrylamide, PAM.


One of the challenging issues encountered during drilling operations is the lost circulation. Numerous issues might arise because of losses, such as wasting of time and higher drilling cost. Several types of lost circulation materials have been developed and are being used to limit mud losses and avoid associated issues. Each solution has benefits and drawbacks.

In this study, a core flooding test was performed to study the effectiveness of polyacrylamide (PAM) granular gel on the reduction of the circulation lost. One common type of fracture characteristic is fractures with tips, commonly known as partially open fracture (POF). However, PAM gel therapy in POFs received little attention in prior research. Models of partly open fractures were built using a cylindrical core. A series of processes are performed on a core to get a POF model. Overall, the PAM gel can decrease plug permeability, making it a useful material for lost circulation. The results indicate that the Polyacrylamide granular gel can decrease the permeability up to 193 times.

Author Biographies

Ali K. Al-Delfi , Petroleum Engineering Department, College of Engineering, University of Baghdad, Iraq



Faleh H. M. Al-Mahdawi, Petroleum Engineering Department, College of Engineering, University of Baghdad, Iraq



Yasir Mukhtar, University of Petroleum, Beijing, China



Yousif Eltahir Bagadi, University of Science and Technology, Sudan




J. Cook, F. Growcock, Q. Guo, M. Hodder, and E. Van Oort, “Stabilizing the wellbore to prevent lost circulation,” Oilf. Rev., vol. 23, no. 4, pp. 26–35, 2011.

S. b Al Maskary, A. A. Halim, and S. Al Menhali, “Curing losses while drilling & cementing,” SPE - Abu Dhabi Int. Pet. Exhib. Conf., pp. 2492–2497, 2014, https://doi.org/10.2118/171910-MS.

M. I. Magzoub, S. Salehi, I. A. Hussein, and M. S. Nasser, “Loss circulation in drilling and well construction: The significance of applications of crosslinked polymers in wellbore strengthening: A review,” J. Pet. Sci. Eng., vol. 185, 2020, https://doi.org/10.1016/j.petrol.2019.106653.

R. Majidl, S. Z. Miska, M. Yu, L. G. Thompson, and J. Zhang, “Quantitative analysis of mud losses in naturally fractured reservoirs: The effect of rheology,” SPE Drill. Complet., vol. 25, no. 4, pp. 509–517, 2010, https://doi.org/10.2118/114130-PA.

G. Beda and C. Carugo, “Use of Mud Microloss Analysis while Drilling to Improve the Formation Evaluation in Fractured Reservoir,” SPE Annu. Tech. Conf. Exhib., pp. 3687–3699, 2001, https://doi.org/10.2118/71737-MS.

A. Lavrov, Lost circulation Mechanisms and solutions. 2016.

M. Alsaba, R. Nygaard, A. Saasen, and O. M. Nes, “Lost circulation materials capability of sealing wide fractures,” SPE Deep. Drill. Complet. Conf., pp. 270–281, 2014, https://doi.org/10.2118/170285-MS.

A. Kumar, S. Savari, D. Whitfill, and D. Jamison, “Application of fiber laden pill for controlling lost circulation in natural fractures,” AADE Natl. Tech. Conf. Exhib., 2011.

F. E. Dupriest, “Fracture Closure Stress (FCS) and lost returns practices,” SPE/IADC Drill. Conf., pp. 173–183, 2005, https://doi.org/10.2118/92192-MS.

J. Gradishar, G. Ugueto, and E. Van Oort, “Setting free the bear: The challenges and lessons of the ursa A-10 deepwater extended-reach well,” SPE Drill. Complet., vol. 29, no. 2, pp. 182–193, 2014, https://doi.org/10.2118/163525-PA.

S. M. Willson et al., “Wellbore Stability Challenges in the Deep Water, Gulf of Mexico: Case History Examples from the Pompano Field,” SPE Annu. Tech. Conf. Exhib., pp. 1833–1842, 2003, https://doi.org/10.2118/84266-MS.

D. (Chevron) Ferron and B. (Chevron) Smiley, Lost circulation guide, , Drilling Specialties Company. 2014.

R. J. White, “Lost-Circulation Materials and Their Evaluation,” Drill. Prod. Pract., 1956.

B. E. Canson, “Lost Circulation Treatments for Naturally Fractured, Vugular, or Cavernous Formations,” SPE/IADC Drill. Conf., pp. 155–166, 1985, https://doi.org/10.2118/13440-MS.

G. C. Howard and P. P. Scott, “An Analysis and the Control of Lost Circulation,” J. Pet. Technol., vol. 192, no. 06, pp. 171–182, 1951, https://doi.org/10.2118/951171-G.

M. T. Alsaba, R. Nygaard, and G. Hareland, “Review of Lost Circulation Materials and Treatments with an Updated Classification Lost Circulation View project Drilling Optimization View project,” Am. Assoc. Drill. Eng., 2014.

S. Savari, J. Butcher, and M. Al-Hulail, “Managing lost circulation in highly fractured, vugular formations: Engineered usage of high fluid loss squeeze and reticulated foam lost circulation materials,” SPE/IADC Drill. Conf., 2020, https://doi.org/10.2118/199635-MS.

Al-Mahdawi F and Saad K., “Enhancement of Drilling Fluid Properties Using Nanoparticles,” Iraqi J. Chem. Pet. Eng., vol. 19, no. 2, pp. 21–26, 2018.

M. Amanullah and M. K. Arfaj, “Date palm tree-based fibrous LCM ‘ARC eco-fiber’ -A better alternative to equivalent imported products,” SPE Kingdom Saudi Arab. Annu. Tech. Symp. Exhib., 2018, https://doi.org/10.2118/192160-MS.

N. S. Amory and F. H. M. Almahdawi, “Experimental Investigation of Pomegranate Peel and Grape Seed Powder Additives on the Rheological and Filtration Properties of Un-Weighted WBM,” Iraqi J. Chem. Pet. Eng., vol. 21, no. 4, pp. 33–40, 2020, https://doi.org/10.31699/IJCPE.2020.4.4.

S. Savari, D. L. Whitfill, D. E. Jamison, and A. Kumar, “A method to evaluate lost-circulation materials - Investigation of effective wellbore-strengthening applications,” SPE Drill. Complet., vol. 29, no. 3, pp. 329–333, 2014, https://doi.org/10.2118/167977-PA.

D. E. Caughron et al., “Unique Crosslinking Pill in Tandem with Fracture Prediction Model Cures Circulation Losses in Deepwater Gulf of Mexico,” IADC/SPE Drill. Conf., pp. 483–490, 2002, https://doi.org/10.2118/74518-MS.

U. Alameedy, A. A. Alhaleem, A. Isah, A. Al-Yaseri, M. Mahmoud, and I. S. Salih, “Effect of Acid Treatment on the Geomechanical Properties of Rocks: An Experimental Investigation in Ahdeb Oil Field,” J. Pet. Explor. Prod. Technol. Accept. Publ., no. 0123456789, 2022, https://doi.org/10.1007/s13202-022-01533-x.

U. Alameedy and A. Al-haleem, “The Impact of Matrix Acidizing on the Petrophysical Properties of the Mishrif Formation: Experimental Investigation,” Iraqi Geol. J., vol. 55, no. 1E, pp. 41–53, 2022, https://doi.org/10.46717/igj.55.1E.4Ms-2022-05-20.

A. K. Alhuraishawy, A. Imqam, M. Wei, and B. Bai, “Experimental Study of Combining Low Salinity Water Flooding and Preformed Particle Gel to Enhance Oil Recovery for Fractured Carbonate Reservoirs,” Fuel, 2018, https://doi.org/10.1016/j.fuel.2017.10.060.

G. P. Hild and R. K. Wackowski, “Reservoir polymer gel treatments to improve miscible CO2 flood,” SPE Reserv. Eval. Eng., vol. 2, no. 2, pp. 196–204, 1999, https://doi.org/10.2118/56008-PA.

R. S. Seright, “Polymer gel dehydration during extrusion through fractures,” SPE Prod. Facil., vol. 14, no. 2, pp. 110–116, 1999, https://doi.org/10.2118/56126-PA.

P. J. Flory and J. Rehner, “Statistical mechanics of cross-linked polymer networks I. Rubberlike elasticity,” The Journal of Chemical Physics, vol. 11, no. 11. pp. 512–520, 1943, https://doi.org/10.1063/1.1723791.




How to Cite

K. Al-Delfi , A., Al-Mahdawi, F. H. M., Mukhtar, Y., & Eltahir Bagadi, Y. (2023). Experimental Study to Investigate the Effect of Polyacrylamide Gel to Reduce the Lost Circulation. Iraqi Journal of Chemical and Petroleum Engineering, 24(1), 79–88. https://doi.org/10.31699/IJCPE.2023.1.9

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