METHOD OF COMPLETING AND PRODUCING HYDROCARBONS IN A WELL

摘要

A method of completing and producing hydrocarbons in a well is disclosed. Ports in the tubing string are blocked so as to prevent fluid communication between the casing string and the tubing string. A fluid column is then created in the tubing string's lower end and a sufficient volume of gas such as nitrogen is added to the fluid column so as to achieve a downhole pressure which exceeds the fracture gradient of the formation. The casing is perforated at the formation so as to fracture the formation. Pressure below the packer is maintained through the use of valve means such as a flapper valve. Sufficient volumes of gas are removed from the well such that the well is in an underbalanced state. The ports in the tubing string are opened so as to release the pressure below the packer and allow it to surge into the tubing string, thus permitting a mixture of hydrocarbons and gas to surge up the tubing string and to the surface.