Other

Shell Oil Comapny

Kurt D Koehler

Gary O Harkins

James R Brewer

In a well an instrumentation line can be introduced down the well bore by a control line having at least a portion outside of intermediate casing and set in cement slurry between the intermediate casing and the surrounding rock and reaching to a zone of interest. A primary member accepts the distal end of the control line at the end of the intermediate casing. A secondary member has a terminal control line (sealed at its far end) attached on its outer surface. When in place, the secondary member extends into and through the zone of interest. When the secondary member is lowered through the primary member, its top end is lowered onto the bottom end of the primary member. Couplings engage and angularly orientate so that the top of the terminal control line couples to and seals with the distal end of the control line to form a conduit through which a fibre optic instrumentation line can be threaded.

Providing a conduit for an instrumentation line

A fiber optic instrumentation line is introduced down a hydrocarbon (oil) well bore by control line formed by pressure tubing conduit fixed on the outside of intermediate casing and set in cement slurry between casing and surrounding rock and reaching to the hydrocarbon production zone . Hollow primary member accepts distal end of control line at the end of casing . Secondary member having sealed terminal control line on its outer surface is lowered through primary member to zone , automatically angularly aligning and engaging respective top and bottom end couplings and , sealing together a respective top and end of terminal control lines forming a continuous, high pressure, fiber optic receiving tube, from well head to well bottom. Alternatively, two lines linked by loop provide a continuous control line returning to the surface.

Deep well instrumentation

Casing comprising fiberglass or another readily millable material are included in a casing string at intervals which are to be produced. The millable sections are then milled to provide for a multi-zone open hole completion.

Growing community of inventors

Bakersfield, CA, United States of America

Kurt D Koehler