Innovative concept of hydrofracturing for deep stress measurement

T. Ito, H. Kato, H. Tanaka

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

For the effective measurement of the reopening pressure in hydraulic fracturing, it is necessary to use the testing equipment with sufficiently small compliance. If not, there is no way to estimate the maximum stress in a plane perpendicular to a borehole, i.e. the maximum horizontal stress assuming a vertical borehole, from the reopening pressure. This limitation makes it difficult to apply the hydraulic fracturing for the measurement of the maximum stress, because the compliance of conventional equipments is generally so large. Taking account of this situation, we propose a new strategy which allows us to do the in-situ tests of hydraulic fracturing for stress measurement at depths more than 1 km. The system consists of two components which are (a) the compact drilling tool with a built-in mudmotor and (b) the packer tool with a built-in pump. Each of them is conveyed in drill pipe on wireline. The compact drilling tool is used to drill an additional hole with 47 mm (AQ size) in diameter and 2-3 m in length at the bottom of an original borehole, and the hydraulic fracturing is carried out in the drilled hole by using the small packer tool.

本文言語English
ホスト出版物のタイトルProceedings of the International Symposium on In-situ Rock Stress - In-situ Rock Stress Measurement, Interpretation and Application
ページ53-60
ページ数8
出版ステータスPublished - 2006 12 1
イベントInternational Symposium on In-situ Rock Stress - In-situ Rock Stress Measurement, Interpretation and Application - Trondheim, Norway
継続期間: 2006 6 192006 6 21

出版物シリーズ

名前Proceedings of the International Symposium on In-situ Rock Stress - In-situ Rock Stress Measurement, Interpretation and Application

Other

OtherInternational Symposium on In-situ Rock Stress - In-situ Rock Stress Measurement, Interpretation and Application
CountryNorway
CityTrondheim
Period06/6/1906/6/21

ASJC Scopus subject areas

  • Geophysics

フィンガープリント 「Innovative concept of hydrofracturing for deep stress measurement」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