Fracture acidization study of calcareous siltstone from a geothermal reservoir

Conference · Mon Sep 01 00:00:00 EDT 1980 · Trans. - Geotherm. Resour. Counc.; (United States)

OSTI ID:6374675

Wolgemuth, K M; Abou-Sayed, A S; Ahmed, U; Schatz, J F; Jones, A H

Laboratory tests have been performed to evaluate the effects of hydrochloric and acetic acids on fracture conductivity at in situ conditions. This work was done on core samples of calcereous silstone from the Salt Lake Formation (the injection horizon) at the Raft River geothermal area to assess whether an acid hydraulic fracture would improve injectivity. Acid treatment resulted in reduced fracture conductivity caused by partial dissolution of the calcite matrix and the subsequent closure of the fracture.

• Research Organization: Terra Tek, Inc., Salt Lake City, UT
• DOE Contract Number: AC07-77ET28301
• OSTI ID: 6374675
• Report Number(s): CONF-800920-
• Journal Information: Trans. - Geotherm. Resour. Counc.; (United States), Vol. 4; Conference: Geothermal Resource Council annual meeting, Salt Lake City, UT, USA, 9 Sep 1980
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
INJECTION WELLS
ACIDIZATION
RESERVOIR ROCK
ACETIC ACID
CALCITE
DRILL CORES
FLUID INJECTION
HYDRAULIC FRACTURING
HYDROCHLORIC ACID
KGRA
RAFT RIVER VALLEY
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CARBOXYLIC ACIDS
COMMINUTION
FRACTURING
HYDROGEN COMPOUNDS
IDAHO
INORGANIC ACIDS
MONOCARBOXYLIC ACIDS
NORTH AMERICA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PACIFIC NORTHWEST REGION
USA
WELLS
150600* - Geothermal Energy- Environmental Aspects