Method for rapidly testing service life of oil well optical cable

Abstract

The invention provides an oil well optical cable service life rapid test method. The method includes: 1) high-temperature aging test of an oil well optical cable; 2) testing the size change rate; 3) testing the retraction rate of the sheath; 4) performing an impact test after aging; and 5) testing the change rate of the peel strength. The invention provides a test method for evaluating whether the service life of an oil well optical cable adopting a high polymer material and metal composite sheath meets the expectation or not. The test sample adopts the target optical cable for descending the well, the performance index of the test of the sample is more targeted, the test method is simple and feasible, the test period and parameters can be adjusted according to the detection capability of high-temperature and high-pressure kettle equipment of a detection party, and the method can be directly used for guiding and verifying whether the service life of the oil well optical cable reaches an expected value or not.

Description

technical field [0001] The invention relates to the technical field of optical cable performance testing and verification, in particular to a quick test method for the life of an oil well optical cable, and more particularly to an evaluation of the expected life of an oil well optical cable using a polymer material and a metal composite sheath through an accelerated aging test method method. Background technique [0002] During the development of oilfields, it is necessary to test parameters such as downhole temperature and pressure to understand the characteristics and state of fluids in wells during the production process of oil and gas wells, so as to optimize production, improve oil and gas recovery and production. In the oil field test, the downhole high temperature and high pressure environment makes the oil well optical cable easy to be corroded, resulting in a sharp decline in service life, which poses a huge test to the oil well optical cable, especially the oil wel...

AI Technical Summary

Problems solved by technology

At present, in the traditional aging performance test of optical cables, only a single medium (hot air) and simple environment (temperature, temperature and humidity, time) are considered, and the test method is not suitable for the physical structure of oil well optical cables. Therefore, for the use of polymer materials and metal The evaluation of the service life of the high temperature and high pressure oil well optical cable with composite sheath needs to test the physical and mechanical properties after a comprehensive aging test condition in order to accurately verify and evaluate its service life

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