Оценка готовности скважины к протаскиванию трубопровода при строительстве подводного перехода

Abstract

Directional survey results are used to monitor the condition of the well when pulling through the pipeline. They can be considered as a technical justification for the regulation of design and contracting organizations specialized in the construction of underwater crossings. The objective of this paper is to analyze methods of obtaining and processing directional survey data to assess the suitability of a well for pipeline pulling. It is established that using modern research and development methods it is possible to describe the directional survey results and construct a geometric model of the well to calculate the stress-strain state of the pipeline during pulling. However, in order to build a model as close to the real conditions as possible, it is necessary to provide the results of the directional survey both on the lower generating line and on the arch. This is possible using downhole gyroscopes. It is possible to survey the lower generating line by any methods, and to survey the well arch only through a plastic (polypropylene) or aluminum pipe. The results of the directional survey carried out along the lower generating line and arch of the well will make it possible to describe them in an analytical way, to build an appropriate geometric model of the well bore and use it to assess the readiness of the well for pulling the pipeline during the submerged crossing construction.