钻井液用有机盐主要为甲酸盐，甲酸钾钻井液体系在国外己被广泛应用，均取得很好的效果，甲酸钾钻井液的特点归纳在下面，可以供参考：
The organic salt used in drilling fluid is mainly formate. Potassium formate drilling fluid system has been widely used abroad and has achieved good results. The characteristics of potassium formate drilling fluid are summarized below for reference:
(1)与地层水接触时不会形成沉淀物，对储层损害程度低；
(1) When contacting with formation water, sediment will not be formed, and the degree of damage to the reservoir is low;
(2)生物毒性非常低，对人体无害，对水生物群落影响很小，生物富集性小；
(2) The biological toxicity is very low, harmless and non-toxic to human body, with little impact on aquatic biological communities and low bioaccumulation;
(3)可生物降解，不污染环境，并且可回收，可重复利用；
(3) Biodegradable, non polluting, recyclable and reusable;
(4)可为钻井完井液提供适当的密度，不需要固体加重剂，容易实现无固相钻进或低固相钻进；
(4) It can provide proper density for drilling and completion fluid without solid weighting agent, and it is easy to realize solid-free drilling or low solid-state drilling;
(5)甲酸钾钻井液pH值容易调节，对金属、橡胶等腐蚀性小；
(5) The pH value of potassium formate drilling fluid is easy to adjust and has little corrosion to metals, rubber, etc;
(6)循环压降小，易于配置，维护简单；
(6) Small circulating pressure drop, easy configuration and simple maintenance;
(7)粘度低，流动性好，摩阻压力损失小，适用于小井眼和易漏失地层钻进；
(7) Low viscosity, good fluidity, low friction pressure loss, suitable for drilling in slim holes and formations prone to leakage;
(8)抑制性强，井壁稳定，井径规则。
(8) Strong inhibition, stable shaft wall, regular well diameter.
在国内采用CH3COOK和K3PO4取代KCl作为抑制剂而形成的无氯新甲酸钾钻井液体系，先后应用于东部地区且收效明显。钻井液体系复配，成功地应用在庄海4x1井，实现了低毒、、防塌、抑制性强、保护储气层等性能。
In China, the chlorine free potassium neoformate drilling fluid system formed by using ch3cook and K3PO4 to replace KCl as inhibitors has been successively applied in the eastern region with obvious results. The drilling fluid system has been successfully applied in Zhuanghai 4x1 well, achieving high-quality performance such as low toxicity, high efficiency, collapse prevention, strong inhibition and gas reservoir protection.
The above is a detailed introduction about maleic anhydride for you. I hope it will help you. If you have any questions, please contact us. We will provide services for you with a professional attitude http://www.jnjhhg.cn
