Study on Autogenous Heat Technology of Offshore Oilfield: Experiment Research, Process Design, and Application

Table 12

Design of deicing and plugging removal.

Slug	Name	Dosage (L)	Effect
First	Pour point reducer solution	2	Reduce the solidification point of solution in wellbore
Second	NH4Cl+NaNO2 supersaturated solution	5	The autothermic main agent was added to the solution in the wellbore and dissolved
Third	Catalyst solution of autothermal reaction	0.5	Accelerate the self-heating reaction to release heat quickly to melt the ice