Method and composition for treating a well to prevent the...

Details Method and composition for treating a well to prevent the... Method and composition for treating a well to prevent the...

E - Fixed Constructions

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B

31/13

E21B 43/263 (2006.01) C09K 8/532 (2006.01)

Patent

CA 1054357

METHOD AND COMPOSITION FOR TREATING A WELL TO PREVENT THE FORMATION OF SULFUR AND SCALE DEPOSITIONS Abstract of the Disclosure This specification discloses a composition and method for treating a well that is used for producing sour gas having dissolved sulfur, and water containing scale-forming ions from a subterranean formation to remove and prevent the deposition of sulfur and scale in the well. The composition is comprised of a mixture of a chemical that is capable of forming a polysulfide with hydrogen sulfide and sulfur and a complexing agent which is capable of complexing the scale-forming ions in the water. The composition is circulated into and from the well and sulfur and scale are removed therefrom. -1-

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