Effect of principal stress magnitudes on hydrofracturing orientation

Technical Report · Sat Dec 01 04:00:00 EST 1979

OSTI ID:5472532

Haimson, B C

The emphasis during the reported period of the project was on the effect of borehole fluid viscosity on hydrofracturing results. To carry out these tests we used different hydraulic oils of known viscosities under a preset state of stress. Two conditions were investigated: one in which the largest horizontal compressive stress (sigma/sub H/) was only slightly larger than the least horizontal stress (sigma/sub h/), and both were considerably smaller than the vertical stress (sigma/sub V/), and another in which sigma/sub V/ was substantially less than either sigma/sub H/ or sigma/sub h/.

• Research Organization: Wisconsin Univ., Madison (USA). Dept. of Metallurgical and Mineral Engineering
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5472532
• Report Number(s): UCRL-15234
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
BASALT
BOREHOLES
CAVITIES
COMMINUTION
COMPARATIVE EVALUATIONS
FRACTURING
HYDRAULIC FRACTURING
IGNEOUS ROCKS
MATERIALS TESTING
MECHANICAL TESTS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
ROCKS
TESTING
VISCOSITY