| 摘要 |
A method of increasing a rate of penetration when drilling as compared to drilling with a baseline drilling fluid comprising an API-grade barite weig hting agent and having a given sag, settling rate, density, flow rate, and p ressure drop through a wellbore, comprising: circulating a drilling fluid co mprising a base fluid and a micronized weighting agent through the wellbore; wherein the drilling fluid is characterized as having an equivalent density , an equivalent or lower settling rate, and an equivalent or lower sag than the baseline drilling fluid; wherein the circulating is at a higher flow rat e than the baseline drilling fluid flow rate; and wherein the circulating re sults in an equivalent or lower pressure drop through the wellbore.
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