R&D of a wireless coiled tubing deployed multilateral intervention system for well stimulations

Offentlig prosjektsammendrag

A large number of horizontal wells with lateral sections are in the need for stimulation intervention to improve production of hydrocarbons. A key element for running successful stimulation jobs is knowing what’s going on down in the well during the job. Running “blind” will represent large uncertainties, and often lead to less successful stimulation jobs or even loss of operation. The same applies to access and entering into laterals which currently is not possible to do by a real-time controlled solution. The exiting solutions available for communication data and control signals to a down hole tool assembly on coiled tubing is wired solutions, where a small electric or fiberoptic wired is installed inside the coiled tubing. For many new Extended Reach Development wells, the length of the coiled tubing will in some cases exceed 30,000 ft, which makes the installation of the wire often impossible. The other major challenge is that an internal wire in the coil highly affects the coils ability to convey large quantities of stimulation fluid. WINS has accepted the challenge to develop a system which overcomes these problems. WINS core technology focuses on down hole wireless communication and power generation, a key technology needed to avoid the use of conventional wire inside the coil. There are however some limitations associated with wireless communication, and the most significant vs wired communication is the data rate. To overcome this deficiency, a pseudo-autonomous down hole tool for accessing and entering lateral well bores will be developed. Pseudo-autonomous operations means that by simple instructions and data feedback, the tool will be able to sense, respond and determine the state and location of the tool in the wellbore. With the above mentioned technology developed and ready for commercial roll-out, WINS will enable oil and gas operators worldwide to perform wireless coiled tubing deployed multilateral well stimulations.