APPROACH TO THE SELECTION OF TYPES OF POLYMER-COMPOSITE PIPES FOR FIELD PIPELINES

Abstract

The work is devoted to the use of polymer-composite pipes (PCP) in the field conditions of the oil and gas industry. Based on a review of existing types of non-metallic pipes of various designs used for the construction of field pipelines, a knowledge base of current technological solutions has been formed and their advantages and disadvantages have been identified. A catalog of technological solutions for field pipelines has been developed, which includes a description of the designs of PCP with their technical characteristics necessary for the design and operation of field pipelines. An applicability matrix has been developed that allows one to determine suitable types and designs of PCP according to technical principles for pipeline construction under certain conditions. The selection criteria are pipe sizes, operating parameters (pressure and temperature), service life, pumped media, purpose of the pipeline and resistance to aggressive media (CO2, H2S). If the PCP meets the specified conditions, this product is included in the matrix for further use in the construction and operation of the pipeline. However, in order to be able to equip fields with pipelines made of polymer-composite materials, it is necessary that solutions made from PCP are not only technically sound, but also economically justified in comparison with steel pipes. One of the main results of this study is the development of a feasibility study methodology (FS) of applicability, which allows us to determine the most effective option for the design and operation of pipelines made of PCP based on a comparison of economic indicators. The methodology was based on a comparison of the cost of steel and polymer-composite products, the cost of construction and installation work and the speed of their implementation, the cost of maintaining pipelines during operation, as well as the costs associated with pipe failures - to eliminate their consequences.
 As part of the study, the accident rate of steel and polymer-composite pipes was also analyzed and studied, on the basis of which a methodology for predicting accident rates for PCP was created.
 Finally, conclusions are made about the possibility of using the developed tools in the oil and gas industry.