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      What data is contained in Stimulation Records?

      This articles gives an overview of the data points that can be found in the Stimulation Records.

      Stimulation records give you the details of a well stimulation. These stimulations will primarily be fracs, but can also contain various acid treatments or other well stimulations.

      Fluid Data

      • Base Fluid: Base frac fluid used (Fresh water, Saline water, Oil, Acid, CO2, Propane, Surfactant, etc)
      • Total Base Water Volume Gallons: The total volume of water used as a carrier fluid for the hydraulic fracturing job (in gallons).
      • Total Base Water Mass: Sum of base fluid ingredients listed with mass in the ingredients table. If no mass is reported, then calculated by the density listed in the ingredients comments. If no density is listed, a conversion rate of 8.33 lbs / gallon is used and mass calculated is set to true.
      • Total Base Non Water Volume Gallons: The total volume of non water components used as a carrier fluid for the hydraulic fracturing job (in gallons)
      • Total Frac Fluid Volume: Total frac fluid volume pumped

      Acid Treatment Parameters

      • Acid Concentration: Concentration of acid used
      • Acid Type: Type of acid used in frac job
      • Acid Volume: Volume of acid used
      • Acid Treatment Present: Flag when an acid ingredient is present as identified by having CAS numbers 7647-01-0 or 7664-39-3 or identified by public record

      Pressure Measurements

      Pressure readings during the fracturing operation include:

      • Average Treatment Pressure: Average treatment pressure
      • Max Treatment Pressure: Maximum treatment pressure
      • Bottom Hole Pressure: Bottom hole pressure
      • Breakdown Pressure: Formation break down pressure
      • Five Min Shut In Pressure: Shut-in pressure after 5 minutes
      • Shut In Pressure: Instantaneous shut-in pressure

      Depth Data

      • Top: Fracture top depth
      • Bottom: Fracture bottom depth
      • Top TVD: Fracture top true vertical depth
      • Bottom TVD: Fracture bottom true vertical depth
      • Plug Back Depth: The depth at which the frac stage is isolated from those below it. For the first stage, this is TD or PBTD in mKB and for subsequent stages this is the location of last bridge plug, sand plug, swell packer, ball seat, etc, below the interval fractured in mKB

      Proppant Information

      • Primary Proppant Material: Material type (Ceramic or Natural Sand)
        • Ceramic defined by containing ingredients like mullite, corundum, cristobalite, bauxite, or ceramic.
        • Natural Sand defined by ingredients like silicon dioxide, ‘silicon, ottowa, sand, white, or various weights identified as natural sands.
      • Total Proppant Mass: Sum of ingredient mass where the purpose is identified as proppant, frac sand, silica, sand  bulk, or CAS number of 14808-60-7 (quartz)
      • Primary Proppant Amount: Amount of primary proppant used on frac job

      Operational Parameters

      • Service Company: Company providing majority of ingredients for the frac job
      • Operator: Name of well operator
      • Start Date: The date on which the hydraulic fracturing job was initiated.
      • End Date: The date on which the hydraulic fracturing job was completed.
      • Number Of Stages: Number of frac stages
      • Average Treatment Rate: Average treatment rate
      • Hole Type: Open hole or cased hole
      • Fluid Type:
        • Slickwater where ingredients with a purpose relating to “friction” are used.
        • Crosslink where friction ingredients are not used and ingredients with a purpose relating to “crosslink” exist.
          • Crosslink Fluid: Borate or Zirconium based determined by use of either ingredient
        • Linear where crosslink and friction do not exist and ingredients related to guar are used.

      Additional Data

      • Breaker Present: Flag when a breaker ingredient is present as identified by having CAS numbers 7727-54-0, 7789-38-0, 14452-57-4, 1135-26-8, or 1309-48-4
      • Clay Control Agent: Ingredients listed with clay control purpose
        • Clay Control Present: Flag when a clay ingredient is present
      • Scale Inhibitor
        • Scale Inhibitor Present: Flag that scale inhibitor is present in frac job
      • Surfactant: Ingredient listed with a surfactant related purpose
        • Surfactant Present: Flag when a surfactant ingredient is present
      • Chemical Tracer: Chemical tracer type used
        • Chemical Tracer Present: Flag to indicate if chemical tracer used
      • Energizer: Type used (CO2, N2, CO2/N2, None)
        • Energizer Present: Energized - less than 52 per cent N2, CO2 or CO2/N2 added. Foam - greater than 52 per cent N2, CO2 or CO2/N2 added.
      • Radioactive Tracer: Radioactive tracer element isotope used
        • Radioactive Tracer Present: Indicates radioactive tracer usage

      Identification 

      • Completion Id: State completion identifier
      • FF Id: Frac Focus internal unique identifier

      Records Management

      • Well Id: Unique well identifier
      • Simple Id: Integer identifier for quick querying
      • Id: Internal unique Identifier
      • Internal Id: Unique record identifier as an integer for quick querying
      • Date Catalogued: Date and time record was catalogued into the export database
      • Date Created: Date record was created in WellDatabase
      • Date Last Modified: Date record was last modified in WellDatabase

      Data Model

      The schema in our data model provides a complete and detailed framework for capturing and analyzing the data available in WellDatabase.

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