PREPARATION OF THE EXPERIMENTAL MODEL OF THE SEAL OF THE UNIVERSAL PREVENTOR FOR LABORATORY TESTS

Abstract

Today, during the development of new and improvement of existing elements of oil and gas machines and equipment, modern approaches to design, simulation modeling and new manufacturing technologies are used. One of the modern technologies used for the aforementioned purpose is additive – the process of sequential construction of a part by building up layers of material (3D printing). With the help of this technology, it is possible to manufacture parts of the most diverse in terms of complexity of forms. For the purpose of experimental research and further optimization of the sealing design of the universal preventer, the design of the mold for its manufacture was developed. A feature of the developed design of the mold is the presence of a cylinder-piston pair with a seal, with the help of which the silicone mixture is fed directly into its inner cavity through a system of holes. The mold and sealing elements (inserts) of the preventer were made using the CreatBot DX Plus 3D printer. The seal of the preventer is made of SKR-788 silicone, the characteristics of which are determined by the results of testing samples on an Instron 4500 rupture unit - the constants are obtained according to the Mooney-Rivlin theory. Verification of the obtained results of testing silicone samples with simulation modeling under similar geometric dimensions and boundary conditions was carried out. The difference between the results is about 7 %. The result of the work is the production of a ready model of the universal preventer seal. For further research, it is necessary to develop a program and test methodology for the produced preventer sealing model, conduct a series of simulated sealing simulations for different geometric shapes and sizes of inserts, and determine their optimal option.