Is the solubility of potassium formate at room temperature good?

The drilling fluid system prepared with potassium formate has the outstanding advantages of strong inhibition, good compatibility, environmental protection and reservoir protection. Field application results show that potassium formate inhibits clay hydration. Therefore, potassium formate has been gradually applied to drilling and completion fluids, especially in high density drilling and completion fluids, and good results have been achieved.

Is the solubility of potassium formate at room temperature good? The manufacturer tells you:

The solubility of potassium formate in water is very high. The solubility of potassium formate in water is 310g/100g at room temperature (25°C).

1. Solubility
The solubility of formate in water is very high. The solubility increases with the increase of the atomic weight of alkali metal. The saturation concentration of potassium formate can reach 76% and dissolves rapidly.

2, density
Formate solution can be prepared with different density of formate clean brine according to need. The maximum density of potassium formate can reach 1.58g/cm3.

3. Viscosity of Formate Aqueous Solution
The viscosity value of potassium formate saturation solution is 10.9 cp, and the formate solution can maintain a low viscosity even at high density, which will not cause the increase of drilling fluid viscosity.

4. PH of Formate Aqueous Solution
The saturated solution of potassium formate has a pH value of 10.6. Formate belongs to strong alkali and weak alkali salts. The alkalinity of water solution is weak alkaline. With the increase of the concentration of formate, the alkalinity increases.

5. Activity of Formate Aqueous Solution
Formate can achieve lower activity of water solution. In the presence of semi-permeable membrane, the activity of drilling and completion fluid is an important factor to maintain formation stability. NaCl and CaCl2 basically reach saturation at the concentration of 30-40%, while potassium formate has higher solubility, which can reach more than 76%, thus showing lower activity of solution and better inhibition of operation. This is good for wellbore. Stability is very important.

Moreover, potassium formate aggravating agent has the above characteristics, and formate compounds are non-toxic, biodegradable and environmentally friendly.

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