Patent
Composition and placement process for oil field chemicals
Lisa A. Cantu,Marvin E. Yost +1 more
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TLDR
In this article, oil field chemicals are incorporated in microcapsules of the condensation product of hydroxyacetic acid or the co-condensation products of hydrocyclic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxyl acid moieties.Abstract:
Oil field chemicals are incorporated in microcapsules of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxylic acid moieties. The microcapsules are then introduced into an oil well bore and/or subterranean oil formation where the microcapsules dissolve over a period of time and release the oil field chemicals.read more
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Biodegradable downhole tools
TL;DR: A disposable downhole tool or a component thereof comprises an effective amount of biodegradable material such that the tool or the component thereof desirably decomposes when exposed to a wellbore environment as discussed by the authors.
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Self-Destructing Filter Cake
Dean Willberg,Keith Dismuke +1 more
TL;DR: In this article, a composition and method for self-destructive fluid loss additives and filter cakes in wellbores and subterranean formations is given, which is used in oilfield treatments such as drilling, completion and stimulation where it disappears when it is no longer needed without the use of mechanical means or injection of additional fluids.
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Compositions and methods for improving proppant pack permeability and fracture conductivity in a subterranean well
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Acid-coated sand for gravel pack and filter cake clean-up
TL;DR: In this paper, a method of the preparation and utilization of polymerized alpha-hydroxycarboxylicacid-coated proppants for gravel pack and removal of filter cake that was deposited by reservoir drilling fluid is presented.
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Method for treating subterranean formations
TL;DR: In this article, a control release capsule comprising a breaker contained within a enclosure member is employed to break fracturing fluids in underground underground formations, such that upon sufficient exposure to the fluid, the capsules rupture, thereby releasing the breaker to the formation.
Patent
Long-acting biocidal compositions and method therefor
TL;DR: In this article, a long-acting biocidal composition consisting of a chlorine dioxide-liberating compound, such as sodium chlorite, and sufficient organic acid-generating compound such as poly(lactic acid), to lower the pH of the composition to less than about 7.
Patent
Polymer article and its use for controlled introduction of reagent into a fluid
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Patent
Process of encapsulating basic nitrogen compounds with alkali-precursor gelatin
TL;DR: In this article, the acid precursor (type A) gelatin is used as the encapsulating macrocolloid, particularly applicable to the formation of liquid center microcapsules containing a basic (cationic) nitrogen compound.