Volume 32 Issue 2
Mar.  2015
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DONG Jun. New Solids-free, Hydrogen Sulfide-Proof, Low Damage Workover Fluid Technology[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 23-25. doi: 10.3969/j.issn.1001-5620.2015.02.006
Citation: DONG Jun. New Solids-free, Hydrogen Sulfide-Proof, Low Damage Workover Fluid Technology[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 23-25. doi: 10.3969/j.issn.1001-5620.2015.02.006
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New Solids-free, Hydrogen Sulfide-Proof, Low Damage Workover Fluid Technology

doi: 10.3969/j.issn.1001-5620.2015.02.006

  • Petroleum Engineering Research Institute of Dagang Oilfield, Tianjin 300280, China

  • Received Date: 2015-01-15
  • Publish Date: 2015-03-31
    Abstract
  • Two sets of solids-free workover fluids were formulated with natural mineral sulfide scavenger. The adsorption rates of sulfide hydrogen of the workover fluids were as high as 237.33 mg/L. They also had low alkalinity, low corrosivity, did not form scale and were compatible with calcium and magnesium ions, and formation waters. Being solids-free, they posed no damage to reservoirs. Pilot application of the workover fluids in five wells in Dagang Oilfield was successful, average restoration period of these wells was 2 days, and the reservoir formation was proved not damaged by the workover fluids.

     

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