Method for paraffin inhibiting
    1.
    发明授权

    公开(公告)号:US12129429B1

    公开(公告)日:2024-10-29

    申请号:US17834537

    申请日:2022-06-07

    CPC classification number: C09K8/524 C09K8/594 C10B53/07 E21B43/16

    Abstract: A method of enhanced oil recovery for a crude oil production well includes the steps of pyrolyzing rubber materials including the steps of heating the rubber materials to form pyro-vapors, condensing the pyro-vapors to form pyro-gas and pyro-oil where the pyro-oil includes an inhibitor solution including non-polar hydrocarbons and polar hydrocarbons. The inhibitor solution is injected as an injection stream into the crude oil production well to facilitate production of crude oil from the crude oil production well.

    Asphaltene inhibition and/or dispersion in petroleum fluids

    公开(公告)号:US12012546B2

    公开(公告)日:2024-06-18

    申请号:US17250193

    申请日:2019-06-04

    Applicant: M-I L.L.C.

    CPC classification number: C09K8/524 C10G21/003 C10G2300/206

    Abstract: Compositions may include an asphaltene dispersant that is the product of a reaction between a polysaccharide having at least two sugar subunits and one or more fatty acid reagents, and a petroleum fluid produced from a subterranean formation and containing asphaltenes therein. The asphaltene dispersant may have a molecular weight of at least 4000 Da. Compositions may further include an aromatic solvent. Methods may include contacting a hydrocarbon fluid with an asphaltene dispersant dissolved in an aromatic solvent, wherein the asphaltene dispersant is the product of the reaction of a polysaccharide and one or more fatty acid reagents. Methods may also include contacting a hydrocarbon fluid with an asphaltene, wherein the asphaltene dispersant is the product of the reaction of a polysaccharide and one or more fatty acid reagents and has a molecular weight of at least 4000 Da.

    ODOR MANAGEMENT FOR DISULFIDE SOLVENTS AND SURFACES CONTACTED THEREWITH

    公开(公告)号:US20240034923A1

    公开(公告)日:2024-02-01

    申请号:US18256319

    申请日:2021-10-08

    CPC classification number: C09K8/532 C09K8/524

    Abstract: Disulfide solvents may be particularly effective for dissolving deposits comprising elemental sulfur, but the extreme odor of these solvent may make their use rather problematic. Solvent blends comprising at least one disulfide solvent, amine solvent, ketone solvent, and ester solvent may afford a less obnoxious odor and not appreciably compromise the sulfur dissolution capabilities. Surfaces contacted with such solvent blends or at least partially spent variants thereof may exhibit excessive odor due to loss of one or more of the amine, ketone, or ester solvents. Excessive odor resulting from a solvent residue upon a surface may be alleviated by contacting the surface with at least one oxidant. Odor balance may also be restored to at least partially spent solvent blends by introducing additional ester solvent, which may convert a biphasic mixture into an emulsion comprising the disulfide solvent.

    Asphaltene dispersants
    9.
    发明授权

    公开(公告)号:US11884875B2

    公开(公告)日:2024-01-30

    申请号:US17618263

    申请日:2020-06-22

    CPC classification number: C09K8/524 C09K8/536

    Abstract: Compositions and methods for preventing the formation of aggregates and for dispersing aggregates and other poorly soluble materials in hydrocarbon fluids. The compositions include an asphaltene dispersant prepared from the reaction of a polyethyleneimine (PEI) dendrimer and one or more derivatizing reagents wherein the polyethyleneimine dendrimer has a weight average molecular weight of greater than or equal to 9 kDa. The methods include emplacing in a wellbore a composition comprising an asphaltene inhibitor, wherein the asphaltene inhibitor is a compound prepared from the reaction of a polyethyleneimine dendrimer and one or more derivatizing reagents wherein the polyethyleneimine dendrimer has a weight average molecular weight of greater than or equal to 9 kDa.

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