| 摘要 |
<p>OIL WELL SPACER FLUIDS A high stability, nondamaging spacer fluid is provided containing readily available weighting agents such as calcium carbonate and iron carbonate dispersed in water using a polymer viscosifier, a salt inhibitor, a primary sulfonated dispersant and a secondary fatty acid amide dispersion. Conventional high density weighting agents can also be used. The spacer fluid is stable over a temperature range of about 32.degree.-300.degree.F for extended periods with densities ranging from 11 to 17.6 pounds per gallon.</p> |
