甲酸钾在钻井完井液中起主要作用的是钾离子，且能完全离解，相同加量时，有效K浓度较氯化钾高，无阴离子氯根的污染，其滤液表面张力明显大于氯化钾钻井完井液体系，渗入地层的流动阻力大，既抑制粘土水化分散膨胀，防止地层缩径，又不干扰电测，腐蚀轻，同时避免了对油层的污染。

Potassium formate plays a major role in the drilling and completion fluid, and can completely dissociate. At the same dosage, the effective K concentration is higher than that of potassium chloride, and there is no anion chloride pollution. The surface tension of its filtrate is significantly greater than that of potassium chloride drilling and completion fluid system. The flow resistance penetrating into the formation is large, which can not only inhibit the hydration and dispersion of clay, prevent the formation from shrinking, but also not interfere with electrical logging. The corrosion is light, and at the same time, avoid the pollution of the oil layer.

小编今天就给大家说说在钻井完井液中使用甲酸钾的一些问题及建议：

The editor will tell you some problems and suggestions about the use of potassium formate in drilling and completion fluids today:

(1)甲酸钾无加量峰值，且加量越大，钻井液粘、切越高，因此，现场宜采取甲酸钾胶液形式加入

(1) Potassium formate has no peak dosage, and the larger the dosage, the higher the viscosity and shear of the drilling fluid. Therefore, potassium formate gel should be added on site

(2)甲酸钾一石灰基聚磺混油钻井完井液体系中不能存有其它阴离子(如SO、Cl等),否则将产生大量气泡，而且严重增稠，因此应尽量避免这些阴离子存在。

(2) There should be no other anions (such as SO, Cl, etc.) in the potassium formate-lime-based polysulfonate mixed drilling and completion fluid system. Otherwise, a large number of bubbles will be generated and seriously thickened. Therefore, the presence of these anions should be avoided as much as possible.

(3)甲酸钾在钻井完井液体系虽现场维护简单、方便，但加入的处理剂种类多、量大。从使用情况来看，可简化体系，删除某些处理剂，进一步降低钻井液成本;

(3) Although potassium formate is easy and convenient to maintain on site in the drilling and completion fluid system, there are many kinds and quantities of treatment agents added. From the perspective of use, the system can be simplified, some treatment agents can be deleted, and the cost of drilling fluid can be further reduced;

(4)甲酸钾易吸水结块，甚板结，不易捣碎，无法从漏斗直接加入，给配制和加入带来困难，增大了劳动强度，建议可先联系客服了解生产周期，减少板结情况。

(4) Potassium formate is easy to absorb water and agglomerate, even harden, not easy to crush, and cannot be directly added from the funnel, which brings difficulties to preparation and adding, and increases labor intensity. It is recommended to contact customer service first to understand the production cycle and reduce the harden.

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