Experimental Investigation and Correlation of Treatment in Weak and High-Permeability Formations by Use of Gel Particles
- Adnan Al-Ibadi (University of Oklahoma) | Faruk Civan (University of Oklahoma)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- October 2013
- Document Type
- Journal Paper
- 387 - 401
- 2013. Society of Petroleum Engineers
- 5.4.5 Conformance improvement
- 2 in the last 30 days
- 459 since 2007
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Near-wellbore formation treatment by injection of suspensions of deformablegel particles is explored as a method of prevention of lost circulation ofdrilling fluids, handling of reservoir permeability heterogeneity, andcontrolling water production in mature waterflooded oil fields containinghighly permeable and weak zones. Conditioning and plugging of such formationsand the resulting permeability impairment occurring during injection ofsuspensions of deformable gel particles are investigated experimentally. Theeffect of concentration, flow rate, and gel-particle sizes of suspensions onthe prevailing pore-plugging processes is inferred by flow tests conducted with3,800-md 16- to 20-mesh sandpacks. Prevailing particle-entrapment and-permeability-impairment mechanisms are identified under various conditions bymeans of specially formulated diagnostic equations. Appropriate dimensionlessgroups are used to develop several empirical correlations of the experimentaldata, which can assist in choosing suitable gel-particle suspensions and properapplication conditions required for effective near-wellbore-formationtreatment. This reveals valuable insights and information about the functionaltrends of sandpack plugging by gel-particle suspensions, which can help insuccessful design and mitigation of formation-plugging treatments in thefield.
|File Size||1 MB||Number of Pages||15|
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