英语翻译Method as claimed in claim 1 wherein the dried,chemicall

英语翻译Method as claimed in claim 1 wherein the dried,chemically oxidized starch drilling fluid dispersant is heated at a temperature in the range of from about 400℉.to about 450℉.for a period of from 15 to about 30 minutes.Method as claimed in claim 1 wherein said dried chemically oxidized starch drilling fluid dispersant is neutralized with an alkaline reagent to a pH in the range of from about 4 to 7 before drying.Method as claimed in claim 1,wherein the dried,chemically oxidized starch drilling fluid dispersant has a water content of from about 3 to 6 percent by weight.