Patent ID: 9353611
Filing Date: 2016-05-31
CPC Classification: E21B

Claim Text:
1. Downhole injection apparatus for injecting steam into wells equipped with at least one dual entry wellhead, production tubing extending through said wellhead into said well, and a lift pump, the production tubing comprising at least one joint, said injection apparatus comprising: an elongated, steam output pipe that delivers steam from a steam generator for use by said apparatus; downhole steam piping for conducting steam from said output pipe through said wellhead into said well at temperatures between 1000 and 1600 degrees F. and at a pressure between 40 to 50 PSIG over the frictional and other losses encountered from the surface to the steam piping outlet; wherein the downhole steam piping and the production tubing are laterally stabilized by the dual entry wellhead; downhole heat measuring means disposed within said well for sensing steam temperature; and, means for mechanically securing said downhole steam piping to said production tubing in a substantially parallel, heat exchange relationship therewith.