Fracture Conductivity

Fracture Conductivity testing is a specialty at Core Lab. The long-term conductivity of a proppant is determined between either standard lab core (Ohio & Berea) or customer submitted formation core samples in patented multi-cell stacks. Tests are run with and without fluids present at a specified temperature (up to 300°F), closure pressure (up to 14,000 psi), and time.

Fracture Conductivity

Fracture Conductivity Tests include:

  • Short-Term API Conductivity
  • Long-Term Conductivity Between Core
  • Gas Flow Turbulence Factors
  • Multiphase Flow Evaluation
  • Flowback Characterization
  • Regain Conductivity of Fracturing Fluids

Fracture treatment simulations are run between core with a specified fracturing fluid and proppant, followed by cleanup with brine, oil or gas.

Individual proppant quality tests for API RP 56, 58 and 60 include:

  • Sieve Analysis
  • Krumbien Shape Factor
  • Acid Solubility
  • Silt and Fine Particulate
  • Crush Resistance
  • Specific Gravity
  • Bulk Density

Conductivity research at Core Lab is on-going through a consortium for "The Investigation of the Effects of Fracturing Fluids on the Conductivity of Proppants." Consortium members participate in studies that examine proppant conductivity in downhole conditions, proppant flowback and fracturing fluid leakoff. Membership in the consortium is available on a yearly basis.

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