Type Curves for Cyclic Steam Operations in the Grosmont Saleski Pilot and their Implications for Recovery Mechanisms
Authors: Daniel Yang, David Stewart, Moslem Hosseininejad, Steve Brand, Laricina Energy Ltd.
Source: This paper was prepared for presentation at the Society of Petroleum Engineers Heavy Oil Technical Conference held in Calgary, Alberta, Canada, June 9 – 11, 2015
Type curves that are developed for bitumen recovery from the Grosmont carbonate reservoir by cyclic operation of steam injection and production through a single horizontal well, consistently match field data, thereby confirming the validity of two key simplifying assumptions:
- Heat flow is conductive; the heat capacity of the rock dominates: This is consistent with the low porosity and high heat capacity of dolomite. As a result, heat retention in the reservoir is efficient.
- Gravity drainage dominates the recovery mechanisms: Thermal Assisted Gas-Oil Gravity Drainage (TA-GOGD) is the dominant recovery mechanism.
The type curve method is used to evaluate unrestricted reservoir performance by quantifying operational constraints and to forecast new cycles in the pilot operations.