..., the hydrofracture stress measurement is conducted in three boreholes: MSZ-01, Mu Z-08 and Dazhangou 0 + 70. Values of in-situ stress in the research region and redistribute stress in the tunnel obtained from the test (Table 1). we consider that tectonic stress plays the main control role in current stress field...

... numerical model Lakirouhani reservoir geomechanics drillstem/well testing deviatoric stress stress measurement fluid viscosity wellbore radius Haimson intersection method Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group...

... the engineering area and have no impacts on the project. Fig.2 Map of suggested tectonic plates around the engineering area. Solid-tip arrows indicate directions of relative movements (modified after Zonenshain L. P., 1981 ) 3 OVERVIEW OF HYDRO-FRACTURING IN-SITU STRESS MEASUREMENTS Totally five boreholes...

... ABSTRACT A stress calculation method was proposed for the new stress measurement technique using the borehole slotter device. The 2D borehole slotter is an instrument which is used in HQ boreholes (96–104 mm diameter), and allows calculation of 2D stress tensor in a plane normal...

... displacement load platen Rock stress estimation Upstream Oil & Gas stress state Probe stress measurement Reservoir Characterization stress component coefficient determination steel pipe reservoir geomechanics interface fracture friction shell borehole jack borehole wall...

... ABSTRACT Three typical deep coal mining areas, including Xinwen, Huainan, and Pingdingshan in China were chosen to take in-situ stress measurements by means of the hydrofracturing stress measurement rig with small borehole. 24 sites of stress measurements were carried out in 9 coal mines...

... liner had undergone considerable change in comparison to that fixed initially based on the minimum cover criteria. The locations of start and end of the steel liner in the head race tunnel were fixed finally on the basis of in-situ stress measurement using hydraulic fracturing method. Results of in-situ...

... in a rock formation is still a challenging problem in rock engineering. Stress measurements by overcoring methods are widely used for determination of the state of stress in rock masses. In this indirect technique, borehole deformations induced by stress relief are measured, and they are then converted...

... hydraulic fracturing stress magnitude fracture frequency Upstream Oil & Gas regime Reservoir Characterization frequency fracture domain ffm01 minimum stress minimum horizontal stress hydraulic method rock mass vertical stress fracture stress measurement Forsmark reservoir...