Abstract

Hydraulic fracturing treatments in unconventional infill (or "child") wells can be significantly affected by depletion from existing parent-well, resulting in asymmetrical fracture growth. These issues may lead to excessive load-water production, proppant deposition, casing deformation in the parent well, and unbalanced stimulation of infill wells. To mitigate these effects, various strategies have been proposed, including the use of far-field diverters in child wells and repressurization of parent wells. Additionally, an increasingly popular strategy involves injecting near-wellbore diverters to temporarily plug entry points into the parent wellbores during frac operations on infill wells. To achieve better application, a novel low-cost, self-degradable, re-crosslink able preformed particle gel (RPPG) has been developed and evaluated. Preliminary characterization results indicate that this RPPG exhibits sufficient thermal stability and self-degrading performance at 150°C during the required timeframe, with minimal residues. It also demonstrates good injectivity and plugging efficiency.

Department(s)

Geosciences and Geological and Petroleum Engineering

Second Department

Chemistry

Publication Status

Available Access

Comments

ConocoPhillips, Grant None

International Standard Book Number (ISBN)

978-195902550-4

International Standard Serial Number (ISSN)

2643-1203; 2643-1181

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 2024

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