Conference proceedings

GEOGARD SX: A SILICA SCALE INHIBITOR FOR GEOTHERMAL BRINE

GARCIA S, MEJORADA A, CORP P ...see all

ANNU. GEOTHERM. RESOURCES COUNC. MTG. (SAN DIEGO, CA, 8/26-29/2001) TRANS., vol. 25, issue 200247 (2001) pp. 15-21

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Abstract

Geogard SX has been developed primarily for the control of silica scaling in geothermal brine. When first tested at the Malitbog Test Facility, this antiscalant--an aqueous solution based on a phosphino carboxylic acid copolymer--achieved 38.1% to 95.7% inhibition efficiency at varying low concentrations of 5 to 10 ppm using brine with high silica saturation indices of 2.3 to 2.5. Subsequent successful testing at 10 ppm with the Botong separated brine, which contains an ultra high concentration of silica of more than 1,100 ppm, led to the first commercial application of the inhibitor. Inspection after 17 mo. of continuous dosing of Geogard SX revealed minimal deposition along the Botong Fluid Collection and Disposal System (FCDS). As for the low excess silica brine, Geogard SX at 0.5 ppm dosing, the test facility trials attained ca 70% inhibition efficiency. If applied to the Malaunay sector of Palinpinon-I FCDS, Geogard SX would reduce the O&M (operating and maintenance) cost by US$250,000/yr. Geogard SX is the first efficient and cost-effective silica scale inhibitor for geothermal brine.

Author-supplied keywords

  • ACID
  • ACIDIZING
  • ADDITIVE
  • ADMINISTRATION
  • ALT FUELS & ENERGY SOURCES
  • ALTERNATE ENERGY
  • AMORPHOUS
  • ANALYTICAL METHOD
  • AREA
  • ASIA
  • BOOK
  • BRINE
  • BRINE DISPOSAL
  • BUSINESS OPERATION
  • CAPITAL EXPENDITURE
  • CARBOXYLIC ACID
  • CHART
  • CHEMICAL PROCESS
  • CHEMISTRY
  • COLLOIDAL DISPERSION
  • COMPARISON
  • COMPOSITION
  • COMPOUND
  • CONCENTRATION
  • CONTAINER
  • COPOLYMER
  • COST
  • COST ANALYSIS
  • COST CONTROL
  • CRITICAL SATURATION
  • DATA
  • DEPOSIT
  • DEPOSIT FORMATION
  • DIAGRAM
  • DISPERSANT
  • DISPOSAL
  • ECONOMIC EVALUATION
  • ECONOMIC FACTOR
  • EFFICIENCY
  • ENGLISH
  • EURASIA
  • EXPERIMENT
  • EXPERIMENTAL DATA
  • FIELD EQUIPMENT
  • FLOW CHART
  • FLOW RATE
  • FLOWLINE
  • FLUID FLOW
  • GEOLOGIC STRUCTURE
  • GEOTHERMAL ENERGY
  • GEOTHERMAL RESERVOIR
  • GEOTHERMAL WELL
  • GRAPH
  • HIGH TEMPERATURE
  • HYDROCHEMISTRY
  • HYDROTHERMAL FLUID
  • INHIBITION
  • INHIBITOR
  • INJECTION
  • INVESTMENT
  • IRON OXIDE
  • LABORATORY DATA
  • LABORATORY TESTING
  • MAINTENANCE
  • MAINTENANCE COST
  • MANAGEMENT
  • MATERIALS TESTING
  • MEETING PAPER TEXT
  • METAL
  • MIXTURE
  • OPERATING
  • OPERATING COST
  • ORGANIC ACID
  • OXIDE
  • PHILIPPINES
  • PHOSPHINO CARBOXYLIC ACID
  • PHOTOGRAPH
  • PHYSICAL PROPERTY
  • PHYSICAL SEPARATION
  • PIPELINE
  • POLYMER
  • POWER
  • PRECIPITATION
  • PREVENTION
  • PRODUCED WATER
  • PRODUCING
  • PRODUCING EQUIPMENT
  • RATE
  • RESERVOIR
  • RESERVOIR FLUID
  • SAMPLE
  • SAMPLE ANALYSIS
  • SAMPLING
  • SATURATION
  • SCALE
  • SCALE DEPOSITION
  • SCALE INHIBITOR
  • SEPARATION EQUIPMENT
  • SEQUESTRATION
  • SILICA
  • SILICON DIOXIDE
  • SOLUTION
  • STABILITY
  • STATISTICS (DATA)
  • STRUCTURE
  • SURFACE AREA
  • TABLE (DATA)
  • TECHNOLOGY
  • TEMPERATURE
  • TEMPERATURE EFFECT
  • TESTING
  • THERMAL STABILITY
  • TIME
  • TIME LAPSE
  • WATER
  • WATER ANALYSIS
  • WATER BASE FLUID
  • WATER CONTENT
  • WATER DISPOSAL
  • WATER PRODUCING
  • WATER SAMPLE
  • WELL

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Authors

  • S E GARCIA

  • A V MEJORADA

  • PNOC ENERGY DEVELOP CORP

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