Compilation of Instantaneous Source Functions for Varying Architecture of a Layered Reservoir with Mixed Boundaries and Horizontal Well Completion Part I: Normal and Inverted Letter ‘e’ Architecture

Abstract

Instantaneous source functions have been compiled and tabulated for both normal and inverted two-layered reservoir of letter ‘e’ architecture. The source functions describe fluid flow in horizontal wells drilled in each layer. Possibility of the existence of all flow periods was considered for each well. Results obtained show that letter ‘e’ architecture yields thirty-two (32) different models with different variations of its five external boundaries, which may be sealed or constant-pressured. The inverted architecture also yields thirty-two (32) different models of varying sealing and constant-pressure boundaries. Vertical inversions turns top of the architecture bottom and bottom top, while horizontal inversion merely turns the top of a horizontal well bottom and bottom top. In other words, all the forms (normal and inverted) of letter ‘e’ architecture will collectively yield one hundred and twenty-eight (128) different models with different variations of sealing and constant-pressure boundaries. Finally, any form of the letter ‘e’ architecture has one mandatory ‘infinitely far away’ external boundary.