Patent ID: 9051829
Filing Date: 2015-06-09
Classification: E21B,H01C,H05B,Y10T

Abstract:
1. A system for treating a subsurface formation, comprising: a plurality of conduits at least partially located in a portion of a hydrocarbon containing formation, wherein at least part of two of the conduits are aligned in relation to each other such that electrical current will flow from a first conduit to a second conduit, wherein each of the first and second conduits comprises a single, continuous outer layer of electrically conductive material extending along the length of the conduit in a hydrocarbon containing layer of the formation, and wherein at least one of the first and second conduits comprises perforations with coverings placed over the perforations; wherein at least a portion of the first conduit and at least a portion of the second conduit are substantially horizontal or inclined in the formation, and wherein at least part of the substantially horizontal or inclined portions are vertically displaced with a part of one conduit being above a part of the other conduit; and a power supply coupled to the first and second conduits, the power supply configured to electrically excite at least one of the conductive materials such that current flows between the first conduit and the second conduit in the formation and heats at least a portion of the formation between the two conduits; wherein the coverings over the perforations are configured to be removed after a desired time of heating the portion of the formation.