Pan Canadian Petroleum Limited

Esso Resources Canada Limited

Canada-Cities Service, Ltd.

Gulf Canada Resources Limited

Petro-Canada Exploration Inc.

Her Majesty the Queen in Right of the Province of Alberta, Government of

Other

Robert C Shaw

Lubomyr M Cymbalisty

Daniel Sorg

A grading blade for use with a plate compactor and a plate compactor having a grading blade, for use in grading base material when compacting. The grading blade is user movable relative to the plate compactor via a connection to a pivoting handle of the plate compactor or via a separate controller. The grading blade may be configured for use with a laser level and/or for remote control.

Vibratory plate compactor with grading means

An apparatus and process are described for homogenizing and subsampling process streams such as those present in the hot water extraction process for recovery of bitumen from tar sand. Such streams contain widely variable proportions of heavy oil, water, and solids. To obtain a representative analysis-size subsample from such a stream, a bulk sample is taken into a cylindrical open-topped vessel containing a coaxial cylindrical draft tube spaced from the internal wall of the vessel. A head element closes and seals the top of the vessel. An impellor extending into the draft tube through the head element is actuated to circulate the bulk sample along an elliptical flow path within the vessel. The vessel contents are maintained in a pressurized condition by the introduction of inert gas. A subsample is taken by mechanically opening and closing a sample port extending through the side wall of the vessel and communicating with the flow path; the subsample is thus taken while the bulk sample is in motion and the components of the mixture are in a homogenized condition.

Homogenizer/subsampler for tar sand process streams

An apparatus and process are described for homogenizing and subsampling process streams such as those present in the hot water extraction process for recovery of bitumen from tar sand. Such streams contain widely variable proportions of heavy oil, water, and solids. To obtain a representative analysis-size subsample from such a stream, a bulk sample is taken into a cylindrical open-topped vessel containing a coaxial cylindrical draft tube spaced from the internal wall of the vessel. A head element closes and seals the top of the vessel. An impellor extending into the draft tube through the head element is actuated to circulate the bulk sample along an elliptical flow path within the vessel. The vessel contents are maintained in a pressurized condition by the introduction of intert gas. A subsample is taken by mechanically opening and closing a sample port extending through the side wall of the vessel and communicating with the flow path; the subsample is thus taken while the bulk sample is in motion and the components of the mixture are in a homogenized condition.

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Edmonton, Canada

Robert C Shaw