Abstract

A Large Scale Thermal Pilot (LSTP) has been in operation in Northern Kuwait in a Heavy Oil Field for some time. Currently, the pilot wells are on Steam flood (SF), after completing two cycles of Cyclic Steam Stimulation (CSS). This paper presents the analysis that led to the improvement of reservoir performance, and the critical learnings from monitoring the steam chamber development from different well completions.

The LSTP in the North area of the field consists of 26 vertical production/injection wells, distributed into eight inverted 5-spot patterns. One is a 10-acre area pattern targeting one reservoir unit and the other one is a 5-acre pattern area targeting two commingled reservoir units.

A systematic approach for data integration was used by multiple disciplines to improve the thermal recovery of the pilots. This integrated approach led to gaining thermal recovery field experience and learnings for improvement of future commercial development thermal operations in the subject heavy oil field.

This paper presents the pilot performance improvements, learnings, and new challenges after analysis of the reservoir performance, including production and injection data, valuable information from dedicated observation wells, impact of completion designs for free-gas and sand management, and supporting systems such as water disposal and water source.

Successful pilot performance improvement under the thermal application was promising and it will support the commercial full-scale phase development by implementing the learnings and the integrated approach of all teams, from surface to subsurface, with a shared goal.

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