Abstract
ABSTRACT The Fracture Development program was defined and implemented by an operating division of what is now Shell Western E&P Inc (SWEPI) in 1982. The objective of this program has been to improve hydraulic fractured well productivity through an increased understanding of hydraulic fracture behavior and improved design and optimization techniques. Program accomplishments reflect an effective cooperative effort between SWEPI, Shell Development Company, and Service Company personnel. Major developments include those of the AWP Olmos and McAllen Ranch field areas. In AWP, frac height was defined and both design height and length were increased through developments by factors of 2 over original estimates. Additionally, fracture fluid type was changed from oil to water based fluids, minifrac testing was initiated, field quality control (Q.C.) procedures were instituted, proppant type was changed and proppant concentrations reached then unprecedented levels of 15 lbm/gal [1797 kg/m3] while costs were reduced. In McAllen Ranch, fracture height growth was studied, minifrac testing was initiated, detailed Q.C. procedures were instituted, proppant concentrations were increased to over 2 times previously set limits, and fracture quality improved while costs were reduced. The benefits of this Fracture Development Program have been improved well performance, increased technical capabilities, enhanced R&D model development, and improved service company products and service.
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