Method of Minimizing or Reducing Salt Deposits By Use of a Fluid Containing a Fructan and Derivatives Thereof
First Claim
1. A method of reducing the amount of crystallized salt in an oil and/or gas well comprising introducing into an oil and/or gas well containing crystallized salt a fluid comprising a salt inhibitor selected from the group consisting of fructans and derivatives thereof and reducing the amount of crystallized salt in the oil and/or gas well.
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Accused Products
Abstract
The amount of crystallized salt in an oil and/or gas well may be minimized or reduced by use of a fructan, such as inulin, or a derivative as a salt block inhibitor. A preferred salt inhibitor is the salt of carboxyalkyl inulin such as a sodium salt of carboxymethyl inulin. The salt block inhibitor may be adsorbed onto a water-insoluble adsorbent.
32 Citations
25 Claims
- 1. A method of reducing the amount of crystallized salt in an oil and/or gas well comprising introducing into an oil and/or gas well containing crystallized salt a fluid comprising a salt inhibitor selected from the group consisting of fructans and derivatives thereof and reducing the amount of crystallized salt in the oil and/or gas well.
- 19. The method of reducing the amount of crystallized salt in an oil and/or gas well comprising introducing into an oil and/or gas well containing crystallized salt a fluid comprising a salt of carboxymethyl inulin.
- 21. A method of reducing the amount of crystallized sodium chloride salt in an oil and/or gas well comprising introducing into an oil and/or gas well a fluid comprising a sodium chloride salt block inhibitor selected from the group consisting of inulin and derivatives thereof, raising the level of sodium chloride saturation in the fluid and reducing the amount of crystallized sodium chloride salt in the oil and/or gas well.
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25. A method of preventing the formation of crystallized salt in an oil and/or gas well which is subject to the formation of crystallized salts which comprises introducing into the oil and/or gas well a fluid comprising a salt inhibitor selected from the group consisting of inulin and derivatives thereof and preventing the formation of crystallized salts therein.
Specification