Method for recovering hydrocarbons using cold heavy oil production with sand (CHOPS) and downhole steam generation

摘要

A method for recovering oil from a reservoir comprises performing a first CHOPS process in one or more first wells, performing a second CHOPS process in one or more second wells that are laterally offset from the first wells, and injecting gas and/or steam into the one or more second wells after the CHOPS processes are at least partially completed. A plurality of channels that extend from the one or more first and second wells may be created as a result of the CHOPS processes. The gas and/or steam may be injected into the channels of the one or more second wells via a downhole steam generator that is located in the one or more second wells. The gas and/or steam may form a gas and/or steam front that drives reservoir products into the channels of the one or more first wells. The reservoir products may be recovered to the surface through the one or more first wells.

主权项

1. A method for recovering oil from a reservoir, comprising:
drilling a first well into the reservoir; producing a first portion of oil and sand from the reservoir through the first well; drilling a second well into the reservoir; locating a downhole steam generator in the second well; injecting steam into the reservoir using the downhole steam generator to form a steam front; and producing a second portion of oil and sand from the reservoir through the first well, wherein the second portion of oil and sand is driven into the first well by the steam front.