Heat treatment for removal of bauschinger effect or to accelerate cement curing

摘要

Materials are delivered within an expanded string before the string is subsequently compressively loaded such that the heat given off by the reaction of the delivered materials raises the fluid temperature in the recently expanded string to temperatures in a range of about 150-300 degrees Centigrade. The materials can be separated for delivery and then allowed to contact to initiate the reaction. Alternatively the materials can be delivered in separate conveyances for more immediate start of the exothermic reaction at the needed location or locations. To the extent there is curing cement about the expanded tubular, then the heat generated also reduces curing time to full setup of the sealing material. The applied heat counteracts or eliminates the Bauschinger effect.

主权项

1. A completion method, comprising:
delivering a tubular string to a predetermined subterranean location; expanding said string; raising the temperature of well fluid at the subterranean location to a predetermined temperature; reversing a Bauschinger effect from said expanding with said raising the temperature; reducing differential compressive loading on said string from formation fluids at the subterranean location during said raising the temperature.