(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)甲酸鉀鉆井液pH值容易調(diào)節(jié)，對(duì)金屬、橡膠等腐蝕性?。?/div>
(5) The pH value of potassium formate drilling fluid is easy to adjust and has little corrosion to metals, rubber, etc;
(6)循環(huán)壓降小，易于配置，維護(hù)簡(jiǎn)單；
(6) Small circulating pressure drop, easy configuration and simple maintenance;
(7)粘度低，流動(dòng)性好，摩阻壓力損失小，適用于小井眼和易漏失地層鉆進(jìn)；
(7) Low viscosity, good fluidity, low friction pressure loss, suitable for drilling in slim holes and formations prone to leakage;
(8)抑制性強(qiáng)，井壁穩(wěn)定，井徑規(guī)則。
(8) Strong inhibition, stable shaft wall, regular well diameter.
在國(guó)內(nèi)采用CH3COOK和K3PO4取代KCl作為抑制劑而形成的無(wú)氯新甲酸鉀鉆井液體系，先后應(yīng)用于東部地區(qū)且收效明顯。鉆井液體系復(fù)配，成功地應(yīng)用在莊海4x1井，實(shí)現(xiàn)了低毒、、防塌、抑制性強(qiáng)、保護(hù)儲(chǔ)氣層等性能。
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.
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