Wang, Wenxin (2005-12). Methodologies and new user interfaces to optimize hydraulic fracturing design and evaluate fracturing performance for gas wells. Master's Thesis. Thesis uri icon


  • This thesis presents and develops efficient and effective methodologies for optimal
    hydraulic fracture design and fracture performance evaluation. These methods
    incorporate algorithms that simultaneously optimize all of the treatment parameters while
    accounting for required constraints. Damage effects, such as closure stress, gel damage
    and non-Darcy flow, are also considered in the optimal design and evaluation algorithms.
    Two user-friendly program modules, which are active server page (ASP) based, were
    developed to implement the utility of the methodologies. Case analysis was executed to
    demonstrate the workflow of the two modules. Finally, to validate the results from the
    two modules, results were compared to those from a 3D simulation program.
    The main contributions of this work are:
    An optimal fracture design methodology called unified fracture design (UFD)
    is presented and damage effects are considered in the optimal design
    As a by-product of UFD, a fracture evaluation methodology is proposed to
    conduct well stimulation performance evaluation. The approach is based on
    calculating and comparing the actual dimensionless productivity index of
    fractured wells with the benchmark which has been developed for optimized
    To implement the fracture design and evaluation methods, two web ASP
    based user interfaces were developed; one is called Frac Design (Screening),
    and the other is Frac Evaluation. Both modules are built to hold the following
    o Friendly web ASP based user interface o Minimum user input
    o Proppant type and mesh size selection
    o Damage effects consideration options
    o Convenient on-line help.

publication date

  • December 2005