Detection device and method for ocean non-coking flexible pipeline outer sheath layer damage

Abstract

The invention discloses a detection device and method for ocean non-coking flexible pipeline outer sheath layer damage. The detection device comprises an ocean non-coking flexible pipeline, joints, aload resistor, a switch, a protective resistor, an ammeter, a power supply, an electric wire and a sealing plug, wherein the head end and the tail end of the ocean non-coking flexible pipeline are independently connected with the joint; the load resistor is communicated with an external tensile armored wire and an internal tensile armored wire on the tail end of the ocean non-coking flexible pipeline; the positive electrode and the negative electrode of the electric wire are independently connected with the external tensile armored wire and the internal tensile armored wire on the head end ofthe ocean non-coking flexible pipeline through sealing plug electrodes; and the power supply, the switch, the protective resistor, the ammeter, the external tensile armored wire, the load resistor andthe internal tensile armored wire are connected in series to form a closed loop. When the ocean non-coking flexible pipeline outer sheath layer is damaged, seawater permeates into the pipeline, the load resistor is subjected to short circuit, and the reading of the ammeter changes so as to detect the ocean non-coking flexible pipeline outer sheath layer damage.

Description

technical field [0001] The invention belongs to the field of marine pipelines, and relates to a damage detection device and method for an outer sheath layer of a marine non-adhesive flexible pipeline. Background technique [0002] In recent years, with the rapid development of science and technology, the equipment and facilities for exploiting offshore oil and gas have been continuously upgraded and improved. Extracting oil from the deep sea is an important source for human beings to obtain oil resources. Offshore floating production platform is the most important part of deep sea oil and gas exploitation. Typically, flexible pipe is installed to connect the wellhead to the floating production platform in order to avoid the use of expensive or fragile heave compensators. As a key component of the floating production platform, the flexible pipe undertakes important tasks such as transporting crude oil, transporting gas, water injection, gas injection, and gas lift productio...

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Problems solved by technology

But these two methods not only need a lot of money, but also have low efficiency, seriously affecting the production schedule

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