Complex analysis of both drilling-induced tensile fractures and stress-induced borehole breakouts for estimating of 3-D in situ stress state

Takashi Okabe, Nobuo Shinohara, Shinji Takasugi, Kazuo Hayashi

研究成果: Conference article査読

4 被引用数 (Scopus)

抄録

Hydraulic fracturing has been widely used as a method of measuring in-situ stresses in a borehole. It is generally assumed that one principal stress is parallel to the borehole axis and the magnitude is equivalent to the weight of overburden. Also it is sometimes hard to apply the method to a hostile environment such as geothermal. In the present paper, we describe a new method for determining the three-dimensional in-situ stress field using drilling-induced tensile fractures and stress-induced wellbore breakouts which are observed from a log such as the borehole televiewer (BHTV). We will show how we interpret the data in order to estimate the three-dimensional stress fields. Then we describe the results of interpretation at Rosemanowes well RH-15 and compare them with the results of overcoring tests conducted at South Crofty mine. The overall agreement between the proposed method and overcoring indicates the validity of the proposed method, which is applicable at a greater depth in a practical well.

本文言語English
ページ(範囲)387-392
ページ数6
ジャーナルTransactions - Geothermal Resources Council
20
出版ステータスPublished - 1996 12 1
イベントProceedings of the 1996 Annual Meeting of the Geothermal Resources Council - Portland, OR, USA
継続期間: 1996 9 291996 10 2

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics

フィンガープリント 「Complex analysis of both drilling-induced tensile fractures and stress-induced borehole breakouts for estimating of 3-D in situ stress state」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル