Abstract

At present, water-Based fracturing fluid systems are mainly polymer (macromolecule) and visco-elastic surfactant (micro molecule). Because of polymer properties and incomplete gelout, the damage to matrices and conductivity of artificial fractures will be inevitable. the surfactant-Based fracturing fluid system is a micro-molecule system not to damage artificial fractures. However, it is difficult to eliminate the damages from rock debris moving and clay swelling information. a novel free-damage fracturing fluid system (FDFF), a cationic surfactant derived from a long chain fatty acid, has been developed and applied in Daqing oil field. FDFF can crosslink in a wide range from a strong acid to a weak acid, and its performance inherits the properties of traditional VES. Because its molecules can be crosslinked in acid, the fracturing process is simultaneously an acidizing process. the pollution to the vicinity of well, therefore, is cleaned out. Meanwhile, the damages of particle motion and plastic strain of the formation near cracks are alleviated so that the high permeability zone around artificial cracks are created. the damages induced by a fracturing treatment are completely removed. the rheology, leak off, capacity of carrying proppant, and conductivity of FDFF together with its case studies are demonstrated in this paper. Copyright 2010, Society of Petroleum Engineers.

Department(s)

Geosciences and Geological and Petroleum Engineering

Publication Status

Available Access

International Standard Book Number (ISBN)

978-161782043-4

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Society of Petroleum Engineers, All rights reserved.

Publication Date

01 Jan 2010

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