Patent ID: 9465137
Filing Date: 2016-10-11
CPC Classification: E21B,G01D,G01K,G01L,G01V,G02B

Claim Text:
1. A system, comprising: at least first and second optical sensing branches located downhole in or near a wellbore, each of the optical sensing branches having at least one single-ended optical sensor to measure one or more downhole parameters that does not pass interrogating light signals through; a first optical waveguide for guiding the interrogating light signals downhole to interrogate optical sensors in each of the first and second optical sensing branches; a first optical coupler to split the interrogating light signals between the first and second optical sensing branches and to guide light signals reflected from the first and second optical sensing branches back to the first optical waveguide; a splitter assembly, downstream of the first optical coupler, to couple the first optical waveguide into at least a second optical waveguide for guiding the interrogating light signals downhole to interrogate optical sensors in the first optical sensing branch and a third optical waveguide for guiding the interrogating light signals downhole to interrogate optical sensors in the second optical sensing branch; and a cable, wherein the first optical waveguide is disposed within the cable, wherein the first optical coupler is mounted within the cable by a mounting assembly, and wherein the mounting assembly comprises a rod secured to the splitter assembly, a heat sink coupled to the splitter assembly, and a housing coupled to the first optical coupler.