SHAPED COMPRESSED PELLETS FOR SLOW RELEASE OF WELL TREATMENT AGENTS INTO A WELL AND METHODS OF USING THE SAME
First Claim
1. A shaped compressed pellet of a binder and a well treatment composite, the well treatment composite comprising a well treatment agent and calcined porous metal oxide wherein the porosity and permeability of the calcined porous metal oxide is such that the well treatment agent is adsorbed onto the porous metal oxide or into the interstitial spaces of the porous metal oxide.
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Accused Products
Abstract
A shaped compressed pellet formed from a composite of a well treatment agent adsorbed onto a calcined porous metal oxide or into the interstitial spaces of the calcined porous metal oxide may be introduced into an oil or gas producing well. The well treatment agent of the shaped compressed pellet may be used to prevent and/or control the formation of deposits in the well.
20 Citations
23 Claims
- 1. A shaped compressed pellet of a binder and a well treatment composite, the well treatment composite comprising a well treatment agent and calcined porous metal oxide wherein the porosity and permeability of the calcined porous metal oxide is such that the well treatment agent is adsorbed onto the porous metal oxide or into the interstitial spaces of the porous metal oxide.
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19. A method of inhibiting or controlling the rate of release of a well treatment agent in a well comprising:
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(a) placing into a receptacle a shaped compressed pellet of a binder and a composite of a well treatment agent adsorbed onto a water-insoluble adsorbent or into interstitial spaces of the adsorbent. (b) affixing the receptacle to the bottom of a bottom hole electric submersible pump by hanging the receptacle from the bottom of the bottom hole electric submersible pump; (c) lowering the bottom hole electric submersible pump with the affixed receptacle into the well; and (d) continuously releasing the well treatment agent from the water-insoluble adsorbent. - View Dependent Claims (20, 21, 22)
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23. A method of inhibiting or controlling the formation of unwanted deposits in a deviated well by:
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(a) introducing into tubing in the well a shaped compressed pellet of a binder and a well treatment composite comprising a well treatment agent and calcined porous metal oxide wherein the porosity and permeability of the calcined porous metal oxide is such that the well treatment agent is adsorbed onto the porous metal oxide or into the interstitial spaces of the porous metal oxide; (b) flowing the shaped compressed pellet over obstructions within the tubing and deviations in the well into a targeted area in the well where unwanted deposits are undesired; and (c) continuously releasing the well treatment agent from the shaped compressed pellet into the targeted area.
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Specification