Geology, geography and global energy

Scientific and Technical Journal

Extended reach prospecting drilling: advantages, problems and ways of solving

2014. №4, pp. 57-68

Savoskin Sergey V. - Undergraduate, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, sergei-savoskin@mail.ru

Shvedova Irina N. - Senior Lecturer, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, inshvedova@mail.ru

Extended reach drilling is becoming predominant in the world nowadays. This method has great advantages over vertical drilling. However, its use is associated with great difficulties in technical and technological terms and staff training. This article deals with the main problems in extended reach drilling and ways of their solving. The methods of wells cementing and cleaning and problems of equivalent circulating density are described in details. The factors influencing the effectiveness of extended reach drilling are considered. The paper discusses the main ways to prevent problems when using this method of drilling. The article deals with ecology and economics of preparing and exploitation of wells, the ways of cementing, estimation and aspects of wells’ cleaning, and problems of equivalent circulating density. This article is of great scientific and practical interest for a wide range of readers interested in implementing of extended reach drilling in their practical and theoretical activities.

Key words: наклонно-направленное бурение, очистка скважины, цементирование ствола скважины, проблемы эквивалентной циркуляционной плотности (ЭЦП), extended reach drilling, well cleaning, well cementing, problems of equivalent circulating density

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