METHOD OF USING CROSSLINKED WELL TREATMENT AGENTS FOR SLOW RELEASE INTO WELL
First Claim
1. A method of inhibiting or controlling the rate of release of a well treatment agent in a well comprising (i) introducing into the well a shaped compressed pellet comprising a crosslinked well treatment agent having hydrolysable bonds, the crosslinked well treatment agent being the product of one or more crosslinking agents and a crosslinkable monomer, oligomer, polymer or a mixture thereof and wherein the well treatment agent of the crosslinked well treatment agent is either the crosslinking agent or the crosslinkable monomer, oligomer, polymer or mixture thereof;
- and (ii) releasing the well treatment agent from the shaped compressed pellet by hydrolyzing the hydrolysable bonds over a period of time.
4 Assignments
0 Petitions
Accused Products
Abstract
A shaped compressed pellet formed from a crosslinked well treatment agent may be introduced into a well. Upon uncrosslinking, the well treatment agent may be used to prevent and/or control the formation of deposits in the well.
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Citations
24 Claims
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1. A method of inhibiting or controlling the rate of release of a well treatment agent in a well comprising (i) introducing into the well a shaped compressed pellet comprising a crosslinked well treatment agent having hydrolysable bonds, the crosslinked well treatment agent being the product of one or more crosslinking agents and a crosslinkable monomer, oligomer, polymer or a mixture thereof and wherein the well treatment agent of the crosslinked well treatment agent is either the crosslinking agent or the crosslinkable monomer, oligomer, polymer or mixture thereof;
- and (ii) releasing the well treatment agent from the shaped compressed pellet by hydrolyzing the hydrolysable bonds over a period of time.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of continuously releasing a well treatment agent into a well, the method comprising:
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(a) introducing into the well a screen having a well treatment agent within its interior wherein the well treatment agent is crosslinked by hydrolysable bonds and the mesh of the screen is sufficient to restrain flow of the crosslinked well treatment agent from the interior of the screen into reservoir fluids and further wherein the mesh of the screen is sufficient for the well treatment agent to flow from the interior of the screen into reservoir fluids upon hydrolysis of the crosslinks; and (b) uncrosslinking the well treatment agent by hydrolyzing the hydrolysable bonds and then releasing into the well the uncrosslinked well treatment agent, wherein the mesh of the screen is sufficient for the uncrosslinked well treatment agent to flow from the interior of the screen into the well. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of inhibiting or controlling the formation of scales in a well by:
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(a) introducing into the well a shaped compressed pellet having a crosslinked scale inhibitor produced by crosslinking a scale inhibitor having hydrolysable bonds with a crosslinking agent; (b) flowing the shaped compressed pellet into a targeted area in the well; and (c) uncrosslinking the crosslinked scale inhibitor by hydrolyzing the hydrolysable bonds and continuously releasing the scale inhibitor from the shaped compressed pellet into the targeted area. - View Dependent Claims (19, 20, 21)
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22. A method of inhibiting or controlling the formation of corrosion in a well by:
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(a) introducing into the well a shaped compressed pellet having a crosslinked corrosion inhibitor having hydrolyzable bonds and produced by crosslinking a crosslinkable monomer, oligomer, polymer or a combination thereof with a crosslinking agent wherein the crosslinking agent is capable of inhibiting or controlling the formation of corrosion in a well; (b) flowing the shaped compressed pellet into a targeted area in the well; and (c) uncrosslinking the crosslinked corrosion inhibitor by hydrolyzing the hydrolyzable bonds and continuously releasing the crosslinking agent from the shaped compressed pellet into the targeted area. - View Dependent Claims (23, 24)
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Specification