Re-fracturing Horizontal Wells: Theory & Practices

Re-fracturing Horizontal Wells: Theory & Practices

Instructor: Dr. Ali Daneshy

November 2 ~ 3, Houston

1.6 CEU

Participants receive a one-year subscription to Hydraulic Fracturing Journal

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Low oil prices are giving new life to re-fracturing for boosting production in sub-economical wells.What complicates the use of the process in horizontal wellsis the large number of previous fractures, completion integrity, and that some of the existing completion systems are not designed with a re-fracturing option.

Who should attend This course is designed for people who are, or planning to, re-fracture their horizontal wells. Some basic familiarity with hydraulic fracturing will be very helpful in maximizing course usefulness.

Contents The contents of this course are divided into two segments; theory, and, practices.
Theory of re-fracturing. This segment answers the following questions;
    Why and how does re-fracturing work
    Effect of reservoir depletion on in-situ stresses
    Differences in initiation and extension between original and re-fractures
    Interference between old and new fractures
    Design of re-fractures
Operational considerations and existing practices
    Openhole liner completions
        Consequences and remedy for completion defects
        Existing methods and practices
    Cemented liner completions
        Consequences and remedy for completion defects
        Existing methods and practices
            Plug & Perf
            Single zone perfs and sliding sleeves

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