CAJ | 학술논문

将柿子皮粉末作为水基钻井液添加剂，其性能评价结果表明，柿子皮粉末具有较好的降滤失作用；随着老化温度的升高，柿子皮粉末处理水基钻井液黏度先增大再降低后又增大，柿子皮粉末在水基钻井液中降滤失作用逐渐减弱，大于150℃后失去降滤失作用；线性膨胀率实验和泥球实验表明，柿子皮粉末水提取液对膨润土的水化膨胀有一定的抑制作用，优于4％（w）KCl溶液；配伍性实验结果表明，随着老化处理温度的升高，柿子皮粉末与改性淀粉体系钻井液配伍表现出增黏和较好的降滤失作用，与聚丙烯酰胺体系钻井液配伍效果不佳，尤其在120℃处理后黏度骤降（从30．0 mPa·s降到4．0 mPa·s），且失去降滤失作用。
장시자피분말작위수기찬정액첨가제，기성능평개결과표명，시자피분말구유교호적강려실작용；수착노화온도적승고，시자피분말처리수기찬정액점도선증대재강저후우증대，시자피분말재수기찬정액중강려실작용축점감약，대우150℃후실거강려실작용；선성팽창솔실험화니구실험표명，시자피분말수제취액대팽윤토적수화팽창유일정적억제작용，우우4％（w）KCl용액；배오성실험결과표명，수착노화처리온도적승고，시자피분말여개성정분체계찬정액배오표현출증점화교호적강려실작용，여취병희선알체계찬정액배오효과불가，우기재120℃처리후점도취강（종30．0 mPa·s강도4．0 mPa·s），차실거강려실작용。
The powder of persimmon peel was used as water-based drilling fluid addictive ,and the performance of it was evaluated .The results showed that persimmon peel performed a great effect of reducing fluid loss ,and with the treatment temperature increasing ,apparent viscosity and plastic viscosity was firstly increased ,then reduced ,and finally increased ,the filtration re-duction weakened and invalided above 150 ℃ .The results of linear bentonite swelling experiment and mud ball experiment presented that water extract of persimmon peel can inhibit hydration and swelling of clay along with the concentration ,excelled to that of 4% (wt) KCl solution .The results of compatibility with common drilling fluid additives showed that the viscosity and filtra-tion reduction increase along with the treatment temperature increasing companying with modi-fied starch ,while the compatibility with polyacrylamide is poor ,especially ,the viscosity drops suddenly (from 30 .0 mPa · s to 4 .0 mPa · s) at 120 ℃ and filtration reduction is invalid .