Hilda Lake is a steam assisted gravity drainage (SAGD) project. The project consists of one horizontal steam injection well, one horizontal production well and four vertical temperature observation wells. The horizontal wells were directionally drilled from surface and have a horizontal section 900 metres in length. The surface facilities were designed to be low cost and simple to operate. The produced liquids are lifted to surface by the same thermosyphon phenomena that drives a coffee percolator so that no artificial lift is required. Operational procedures have been developed so that down hole monitoring in the horizontal wells is not required. The project was started up on September 5, 1997 and has operated continuously since then. Production results are compared with predictions made with numerical simulation.

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