Lab Analysis: Fulcrum Technology Maintains Cement Properties | Schlumberger
Tech Report
Location
United States, North America, Onshore
Details
 
Testing Parameter Value 
Testing Parameter Temperature, degF [degC] Value  340 [171]
Testing Parameter Density, lbm/galUS [g/cm3] Value 12 to 16.2 [1.44 to 1.94]
Background
As operators accelerate the use of Fulcrum cement-conveyed frac performance technology to improve stage-to-stage isolation before fracturing, lab work was designed to verify zonal isolation and cement stability with and without the additive. Conventional cement and cement enhanced with Fulcrum technology were tested for common critical cement properties such as compressive strength and thickening time.
Products Used

Lab Analysis: Fulcrum Technology Maintains Cement Properties

Additive changes the rheology of leftover drilling fluid without adverse effect on cement strength and other mechanical properties

overflow image
For cement mixed at 13.2 lbm/galUS [1.58 g/cm3], slurry and set cement properties were comparable for the conventional and Fulcrum technology-enhanced cements, except that the channeled mud near the Fulcrum technology-enhanced cement had much higher resistance to flow. Results for other densities are available upon request.

Lab Testing Results Summary

 
Property Conventional Cement  Cement with Fulcrum Technology Change, % 
Property Density, lbm/galUS Conventional Cement   13.2 Cement with Fulcrum Technology 13.2 Change, %  0
Property Conditioned viscosity, cP Conventional Cement  51.9 Cement with Fulcrum Technology 55.9 Change, %  8
Property Conditioned yield point, lbf/100 ft2 Conventional Cement  13.1 Cement with Fulcrum Technology 10.72 Change, %  –18
Property Free fluid Conventional Cement  0 Cement with Fulcrum Technology 0 Change, %  0
Property Sedimentation Conventional Cement  0 Cement with Fulcrum Technology 0 Change, %  0
Property Thickening time, h:min Conventional Cement  4:47 Cement with Fulcrum Technology 4:50 Change, %  1
Property Fluid loss, mL Conventional Cement  80 Cement with Fulcrum Technology 80 Change, %  0
Property Time to 500-psi compressive strength, h:min Conventional Cement  6:59 Cement with Fulcrum Technology 8:23 Change, %  20
Property Mud channel yield point, lbf/100 ft2 Conventional Cement  65.2 Cement with Fulcrum Technology 1,185.9 Change, %  1,719
Products Used

Share This