Paper: Simultaneous Production from Two Reservoirs through the Same Flow String

The constant search for methods to increase the efficiency of production systems and to reduce operating costs has led to the development of a wire line tool which makes it possible to produce and control two separate reservoirs through a single string of tubing. This paper is a progress report of the experience that one company has, with this tool, gained in eight of its dually completed wells in Louisiana and Texas. Field tests have clearly demonstrated that this device can be used to maintain separation of production from two reservoirs, to control and determine the rate of production from each, and to change the rate of production as required. The advantages in simultaneous, one string multiple completions are enumerated, and various applications of the method are discussed.