Systems and Methods for Providing Fiber Optics in Downhole Equipment

摘要

Systems and methods for installing an optical fiber in a downhole equipment system having multiple components that are installed in the field. Components such as sections of an ESP motor are assembled, forming a continuous sealed conduit that extends through the components. The conduit is sealed to prevent potentially damaging fluids from leaking into the conduit. After the conduit through the components is formed, an optical fiber is inserted into the conduit so that the fiber spans the connections between the components. The optical fiber may incorporate multiple sensors (e.g., fiber Bragg gratings) that can sense parameters such as temperature at multiple points in the different components. The passageways through the different components may have different diameters or tapered/chamfered edges to facilitate insertion of the optical fiber in the conduit.

主权项

1. A downhole equipment system comprising:
a plurality of field-assembled downhole system components, wherein each of the components has a passageway therein sized to accommodate an optical fiber, wherein when the components are assembled, the passageways of the components form a single sealed conduit that extends through the plurality of components, wherein the conduit has a port that is capable of being sealingly coupled to a fiber optic cable, and wherein hydrogen-containing fluids are prevented from contacting the optical fiber in the conduit; and an optical fiber which extends through the port and into the conduit, wherein the optical fiber occupies at least a portion of each of the passageways of the plurality of components.