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Use of Mineral Oils to Reduce Fluid Loss for Viscoelastic Surfactant Gelled Fluids
Use of Mineral Oils to Reduce Fluid Loss for Viscoelastic Surfactant Gelled Fluids
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机译:使用矿物油减少粘弹性表面活性剂胶凝液的流失
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摘要
Fluids viscosified with viscoelastic surfactants (VESS) may have their fluid loss properties improved with at least one mineral oil which has a viscosity greater than 20 cps at ambient temperature. The mineral oil may initially be dispersed oil droplets in an internal, discontinuous phase of the fluid. In one non-limiting embodiment, the mineral oil is added to the fluid after it has been substantially gelled in an amount between about 0.2 to about 10% by volume.
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