Тип публикации: статья из журнала
Год издания: 2016
Ключевые слова: well, drilling, boring column, configuration, well curvature
Аннотация: Relevance of the research is explained the necessity to increase the efficiency of drilling prospecting wells in difficult mining-and-geological conditions, including those related to a natural curvature of wells. The aim of the research is to develop a technique of using and designs of boring configurations with the displaced cross section mass center which allow increasing the efficiency of drilling the prospecting wells. Research methods: analytical researches, developmental works and experimental skilled works. Results. The authors have developed the theoretical regulations, a technique of application and a design of boring configurations with the displaced cross section mass center and carried out the production tests of various designs of boring configurations with the displaced cross section mass center when drilling. Conclusions. Based on the developed model of movement of boring configurations with the displaced center of gravity of cross section the authors obtained the analytical dependences for calculating the sizes of eccentricity of boring configuration cross section providing their rotation round a well axis (Phi(1), type), as well as the length of the column part involved in the rotation mode Phi(1) that allows developing the configurations of a boring column capable of operating in more favorable mode and providing the increase of boring efficiency. Based on standard shells with the removable core receiver of a standard HQ size the pipes with the displaced cross section mass center were developed and produced. They were tested on production wells as a part of configuration in which three pipes with the displaced cross section mass center were placed. The results of the tests showed that it is efficient to apply the pipes with the displaced cross section mass center as a part of the high-balanced boring columns as the decrease in intensity of natural curvature of wells is reached, vibration and costs of power for boring column operation decrease.
Журнал: BULLETIN OF THE TOMSK POLYTECHNIC UNIVERSITY-GEO ASSETS ENGINEERING
Выпуск журнала: Vol. 327, Is. 5
Номера страниц: 75-86
ISSN журнала: 25001019
Место издания: TOMSK
Издатель: TOMSK POLYTECHNIC UNIV, PUBLISHING HOUSE
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