摘要:
A method for consolidating particulate matter in a well wherein the method comprises the following steps: Injecting a composition into a sand bearing formation, where the composition comprises a curable non-aqueous, homogeneous liquid, an initiator for heat induced production of free radicals, a pot life extending inhibitor for stabilization of free radicals, and optionally an accelerator and optionally a filler wherein said non- aqueous, homogeneous liquid further comprises an at least partially unsaturated pre- polymer selected from the group consisting of polyester and epoxy vinyl ester, and at least one vinyl or allyl containing monomer. Subsequently injecting an aqueous, non- aqueous liquid or a gas for re-establishing permeability of the formation and letting the composition cure by free radical polymerization in the sand bearing formation at a temperature of 0-150° C to form a cured sand consolidating material. The composition as described in the first step of the said method can also be used as a sand consolidation material in general, without following the method as previously described.
摘要:
Reduction of the water permeability within a subterranean formation, particularly within a proppant pack or a gravel pack, can be achieved through the use of a relative permeability modifier (RPM) coated on a particulate material. Methods for reducing the water permeability include providing RPM-coated particulates that contain a RPM coating on the particulates, and placing a treatment fluid containing a base fluid and the RPM-coated particulates in at least a portion of a subterranean formation. The treatment fluid can also contain a companion polymer that serves to further reduce the water permeability compared to that achievable when using the RPM alone.
摘要:
L'invention concerne un procédé de synthèse de nanoparticules en milieu organique à partir de complexes de polyélectrolytes de charges opposées (PEC). L'invention concerne également une méthode de traitement de formations géologiques utilisant le système particulaire de taille nanométrique ainsi obtenu.
摘要:
Embodiments disclosed herein relate to aqueous based wellbore fluids for preventing wellbore fluid loss downhole containing at least one copolymer formed from at least one natural polymer monomer and at least one latex monomer, and an aqueous base fluid.
摘要:
A method for treating solid materials is disclosed, where the treating compositions coats surfaces or portions of surfaces of the solid materials changing an aggregation or agglomeration propensity of the materials. Treating composition and treated solid materials are also disclosed. The methods and treated materials are ideally suited for oil field applications.
摘要:
Herein is described a method of consolidating a subterranean formation or repairing a gravel pack, comprising (i) providing a consolidating fluid, wherein the consolidating fluid comprises a gel component and a gel-forming agent; and (ii) injecting the consolidating fluid into the formation or gravel pack, under conditions wherein the gel component forms a flexible gel, thereby consolidating the formation.
摘要:
Particulate material eg. sand (20) is continuously coated with a consolidatable resin composition (26) and formed as a suspension in a gelled aqueous carrier liquid (10) for transport (42) to a subterranean zone in which the sand is consolidated. In the method, substantially continuous streams of a gelled aqueous carrier liquid (10), uncoated particulate material (20), a resin composition (24) which will subsequently harden, and a surface active agent (16), are mixed (14) whereby the particulate material is continuously coated with the resin composition and simultaneously suspended in the gelled aqueous carrier liquid.
摘要:
A method of preventing or reducing the migration of fines in a permeable structure such as an earthen formation, comprising contacting said fines with an effective amount of organic copolymer having a molecular weight of from about 1,000 to about 3,000,000 and having recurring structural monomer units formed in a random fashion of the formula: wherein
R 1 and R 2 are independently methyl, ethyl, hydroxyethyl or hydroxymethyl; R 3 is an unsubstituted alkylene group having from about 2 to about 4 carbon atoms or a sustituted alkylene group having from about 2 to about 4 carbon atoms and containing a hydroxy group; R 4 is methyl or ethyl; R 5 is hydrogen or methyl; M is hydrogen or an alkali metal; and,
monomer unit I is present in the range of from about 5 to about 30 weight percent of the copolymer and monomer unit II is present in the range of from about 70 to about 95 percent by weight of the copolymer.
摘要:
Systems and methods for treating formation intervals including forming a low permeability layer on a surface of the interval and pumping a sand control treating solution through the layer, which diverts the flow into the formation permitting improved treatment uniformity and improved overall internal treatment.