Systems and Methods for Providing Power and Communications for Downhole Tools

摘要

Systems and methods for conveying power and data between surface equipment, an ESP and one or more remote tools while requiring a reduced number of penetrations through a tubing hanger. In one embodiment, a primary cable carries power and data between surface equipment and the ESP. A separate secondary cable is coupled between the ESP and the remote tools. The ESP receives power from the surface equipment via the primary cable, and the remote tools receive power from the ESP via the secondary cable. A step-down transformer in the ESP transforms power to reduced-voltage AC power, or a rectifier produces rectified DC power which is provided to the remote tools via the secondary cable. A transceiver in the ESP communicates data between the surface equipment and the remote tools. Data and power for the ESP and remote tools are conveyed through a single common penetration in a tubing hanger.

主权项

1. A system comprising:
one or more pieces of surface equipment positioned at the surface of a well; an electric submersible pump (ESP) installed downhole in the well; a primary power cable coupled between the one or more pieces of surface equipment and the ESP; one or more remote tools which are separate from the ESP and are installed in the well below the ESP; and a secondary cable which is separate from the primary power cable, wherein the secondary cable is coupled between the ESP and the one or more remote tools; wherein the one or more remote tools receives power from the ESP via the secondary cable; and wherein the one or more remote tools receives power from the surface equipment via the primary power cable, the ESP and the secondary cable, and wherein the one or more remote tools communicates with the surface equipment through the primary power cable, the ESP and the secondary cable.