Hydrofluoric-hydrochloric acid:

See mud acid.

Terms Related to Hydrofluoric-hydrochloric acid

• Formic acid

  An organic acid, h2co2 or hcooh, used for acidizing oilwells. It is stronger than acetic acid but much less corrosive than hydrofluoric or hydrochloric acid ...

• Inhibited acid

  An acid that has been chemically treated before the acidizing or acid fracturing of a well to lessen its corrosive effect on the tubular goods ...

• Mud acid

  A mixture of hydrochloric and hydrofluoric acids and surfactants used to remove wall cake from the wellbore.

• Hydrochloric acid

  An acid compound, hci, commonly used to acidize carbonate rocks. It is prepared by mixing hydrogen chloride gas in water. Also known as muriatic acid.

• Sulfamic acid

  A crystalline acid derived from sulfuric acid that is sometimes used in acidizing.

• Acid fracture

  To fracture stimulate a formation by injecting the acid over the parting pressure of the rock and using the acid to etch channels in the ...

• Humic acid

  Organic acids of indefinite composition in naturally occurring leonardite lignite. The humic acids are the most valuable constituent.