Identification of Water Production Mechanism in One of Iran’s Oil Fields and Treat it With Gel Injection

Document Type : Research Paper


Petroleum Engineering, Sahand Oil & Gas Research Institute, Petroleum and natural gas Engineering Faculty of Sahand University of Technology, Tabriz, Iran


In this study, the problem of water production in one of Iran's oil reservoirs will be examined. First, using the flow rate diagram of oil and water production, the problem of water production will be examined according to time. Then, after confirming the occurrence of water production problem, the mechanism of water production will be investigated using Chan diagnostic diagrams and the created sector model. The results of this study indicate that firstly, the problem of water production in the well under study is observed, and secondly, according to the Decline-curve analysis diagrams, Recovery plot, Chan derivative diagram and schematic shape of the fluid flow movement, it shows the mechanism. Water production is a channel flow process under water injection.
A gel treatment at early time with 25% of water cut was studied, for that it was modelled a gel treatment after 500 days of production.The main observation is that by increasing the concentration of injected gel, the rate of oil production increases and the rate of water production decreases. The concentration evaluated concentration was from 0 to 100 (lb/bbl) of solution, a stabilization concentration was not observed. Finally, first by identifying the type of water production mechanism for this reservoir in Iran, it has been determined that it has water production through the canal and then by using a simulation of gel injection, the water production rate has decreased and the oil production rate has increased.


  1. Bailey B, Crabtree M, Tyrie J, Elphick J, Kuchuk F, Romano C, Roodhart L. Water control. Oilfield review. 2000 Jan;12(1):30-51.
  2. Chan KS. Water control diagnostic plots.1995.
  3. Nawawi H, Al-Shabibi H, Zeybek M, Malik SH. Comprehensive diagnostic and water shut-off in open and cased hole carbonate horizontal wells. 2012, SPE162287.
  4. Pritchett J, Frampton H, Brinkman J, Cheung S, Morgan J, Chang KT, Williams D, Goodgame J. Field application of a new in-depth waterflood conformance improvement tool. InSPE international improved oil recovery conference in Asia Pacific 2003 Oct 20. OnePetro.
  5. Fragachan FE, Robles FC, Gutierrez JJ, Herrera G. Controlling Water Production in Naturally Fractured Reservoirs with Inorganic Gel. 1996, SPE 35325.
  6. Seright RS, Liang J. A comparison of different types of blocking agents. InSPE European Formation Damage Conference 1995 May 15. OnePetro.
  7. Dupuis G, Bouillot J, Templier A, Zaitoun A. Successful chemical water shut-off treatment in an Omani field heavy-oil well. InAbu Dhabi International Petroleum Exhibition and Conference 2015 Nov 9. OnePetro.
  8. Shahab U, Dolan J-D, Chona R-A, Gazi N, Monteiro K, Al-Rubaiyea J, Al- Sharqawi A. Lessons Learned from the First Openhole Horizontal Well Water Shutoff Job Using Two New Polymer Systems— A Case History from WafraRatawi Field Kuwait. 2003, SPE 81447.
  9. Miller MJ, Chen KS. Water and gas control gel placement. InSPE Western Regional Meeting 1997 Jun 25. OnePetro.
  10. CEES. Soluble Silicates: Chemical, toxicological, ecological and legal aspects of production, transport, handling and application: Centre Europeend'Etude des Silicates, 2013.
  11. Hatzignatiou DG, Helleren J, Stavland A. Numerical Evaluation of Dynamic Core-Scale Experiments of Silicate Gels for Fluid Diversion and Flow-Zone Isolation. SPE Production & Operations. 2014 May 15;29(02):122-38.
  12. Metin CO, Rankin KM, Nguyen QP. Phase behavior and rheological characterization of silica nanoparticle gel. Applied Nanoscience. 2014 Jan;4(1):93-101.
  13. Seright RS, Lee RL. Gel treatments for reducing channeling in naturally fractured reservoirs. SPE Production & Facilities. 1999 Nov 1;14(04):269-76.
  14. Lashari ZA, Memon A, Ansari U, Memon HU, Tunio AH. Simulating the Effects of Water Shut-off Treatment by Polymer Gel Injection. InPAPG/SPE Pakistan section Annual Technical Conference 2014 Nov 24. OnePetro.
  15. Mattax CC, Dalton RL. Reservoir Simulation. 1990, SPE 21606 and 21620.