Fracture acidization study of calcareous siltstone from a geothermal reservoir

Conference · Mon Sep 01 04:00:00 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-
• Conference Information: Journal Name: Trans. - Geotherm. Resour. Counc.; (United States) Journal Volume: 4
• Country of Publication: United States
• Language: English

Related Subjects

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