Skip to main content
padlock icon - secure page this page is secure

A New Transient Matrix/Fracture Shape Factor for Capillary and Gravity Imbibition in Fractured Reservoirs

Buy Article:

$60.00 + tax (Refund Policy)

Accurate modeling of multiphase flow, matrix saturation distribution, and having a mathematical model to explain matrix to fracture fluid transfer are crucial issues in dual porosity modeling of fractured reservoirs. Most of the proposed shape factors have been derived for single phase flow under the expansion mechanism. Unfortunately, due to the process and phase sensitivity of the shape factor, these formulas could not describe the matrix-fracture interaction in the countercurrent imbibition process, which occurs within the water-invaded zone. Furthermore, none of the existing shape factors included the gravity term in their derivation. Thus, this necessitates development of a transient shape factor specifically for the imbibition mechanism. In the current study, the three-dimensional distribution of fluid saturation within a matrix block and time-dependent matrix-fracture shape factor formulation are derived analytically by solving the saturation diffusion equation in the countercurrent imbibition process. In contrast to previous works, the proposed formulations have the advantage of including both capillary and gravity forces. Meanwhile, the analytical solution is verified by a fine grid simulation model. Then, it is used to develop an analytical formula for the matrix-fracture shape factor in the countercurrent imbibition process. As opposed to previous works, the new shape factor has the advantage of considering both forces of capillary and gravity on matrix-fracture coupling.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Shape factor; bond number; countercurrent imbibition; fractured reservoirs; matrix–fracture transfer function

Document Type: Research Article

Affiliations: 1: Main Office Building, National Iranian South Oil Company (NISOC), Petroleum University of Technology, Ahvaz, Iran 2: Reservoir Studies Division, Department of Petroleum Engineering, National Iranian South Oil Company (NISOC), Ahvaz, Iran

Publication date: December 2, 2015

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more