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1. 发明授权

US11319479B2 Organic acid systems 有权
公开(公告)号：US11319479B2
公开(公告)日：2022-05-03
申请号：US16814415
申请日：2020-03-10
申请人： FLUID ENERGY GROUP LTD.
发明人： Clay Purdy , Markus Weissenberger , Adrienne Lee
IPC分类号： C09K8/528 , C10G75/02 , C09K8/72 , C09K8/86 , C09K8/54
摘要： An organic acid composition for use in oil industry activities, said composition comprising an arylsulfonic acid in water as well as the use of said composition to perform various operations in the oil industry. There is also disclosed a solid acid composition comprising a corrosion inhibitor ready for dissolution and use.

2. 发明授权

US11781227B2 Composition useful in metal sulfide scale removal 有权
公开(公告)号：US11781227B2
公开(公告)日：2023-10-10
申请号：US17060283
申请日：2020-10-01
申请人： FLUID ENERGY GROUP LTD.
发明人： Clay Purdy , Markus Weissenberger , Adrienne Lee
IPC分类号： C23G1/19 , C23G1/18
CPC分类号： C23G1/19 , C23G1/18
摘要： The present invention discloses a method and a composition for removing metal sulfide scale present on the surface of a metal, said method comprising:

providing a liquid composition comprising:

a chelating agent and a counterion component selected from the group consisting of: sodium gluconate; gluconic acid; tetrasodium EDTA; EDTA; propylenediaminetetraacetic acid (PDTA); nitrilotriacetic acid (NTA); N-(2-hydroxyethyl) ethylenediaminetriacetic acid (HEDTA); diethylenetriaminepentaacetic acid (DTPA); hydroxyethyliminodiacetic acid (HEIDA); cyclohexylenediaminetetraacetic acid (CDTA); diphenylaminesulfonic acid (DPAS); ethylenediaminedi(o-hydroxyphenylacetic) acid (EDDHA); glucoheptonic acid; gluconic acid; oxalic acid; malonic acid; succinic acid; glutaric acid; adipic acid; pimelic acid; suberic acid; azelaic acid; sebacic acid; phthalic acid; terephthalic acid; aconitic acid; carballylic acid; trimesic acid; isocitric acid; citric acid; L-glutamic acid-N,N-diacetic acid (GLDA); salts thereof; and mixtures thereof; and
an aldehyde; and
water

exposing a surface contaminated with said metal sulfide scale to the liquid composition;
allowing sufficient time of exposure to remove said metal sulfide scale from the contaminated surface and sequestration of the sulfur ions from solution.

3. 发明授权

US11945997B2 Composition useful in sulfate scale removal 有权
公开(公告)号：US11945997B2
公开(公告)日：2024-04-02
申请号：US16823025
申请日：2020-03-18
申请人： Fluid Energy Group Ltd
发明人： Clay Purdy , Markus Weissenberger , Stig Magnor Nordaa , Adrienne Lee
IPC分类号： C02F5/08 , C02F5/10 , C02F5/12 , C09K8/528 , C02F101/10 , C02F103/08 , C02F103/10 , E21B37/06
CPC分类号： C09K8/528 , C02F5/125 , C02F2101/101 , C02F2103/08 , C02F2103/10 , E21B37/06
摘要： The present invention discloses a novel aqueous composition for use in removing petroleum-contaminated barium sulfate scale from a surface contaminated with such, said composition comprising: a chelating agent and a counterion component selected from the group consisting of: Li5DTPA; Na5DTPA; K5DTPA; Cs5DTPA; Na4EDTA; K4EDTA; TEAH4DTPA; and TBAH5DTPA; a scale removal enhancer; and a non-ionic surfactant. There is also disclosed methods to use such compositions.

4. 发明授权

US11840913B2 Methods for stimulation of hydrocarbon-bearing formations while inhibiting corrosion of metal surfaces contacted by acid solutions used in stimulation 有权
公开(公告)号：US11840913B2
公开(公告)日：2023-12-12
申请号：US17614181
申请日：2020-05-08
申请人： Fluid Energy Group Ltd.
发明人： Clay Purdy , Markus Weissenberger , Adrienne Lee
IPC分类号： E21B43/26 , E21B43/27 , C09K8/54 , C09K8/74 , E21B37/06
CPC分类号： E21B43/261 , C09K8/54 , C09K8/74 , E21B37/06 , E21B43/27 , C09K2208/32
摘要： A method for stimulation of a hydrocarbon-bearing formation includes inserting a perforating tool and an acidic composition into a wellbore. An outside surface of the tool is pre-treated prior to downhole insertion with a grease containing a first corrosion inhibitor adapted minimize corrosion by exposure of the tool the acidic composition for a duration of the stimulation process. The acidic composition further comprises a second corrosion inhibitor that reacts with the first corrosion inhibitor to generate a corrosion protective layer onto the outside surface of the tool. The method further includes perforating the wellbore with the tool, allowing the acidic composition to come into contact with the perforated area of the wellbore, removing the tool from the wellbore; and initiating the stimulation of the perforated area using a stimulation fluid.

5. 发明申请

US20220333472A1 Novel Stimulation Method 有权
公开(公告)号：US20220333472A1
公开(公告)日：2022-10-20
申请号：US17614181
申请日：2020-05-08
申请人： Fluid Energy Group Ltd.
发明人： Clay Purdy , Markus Weissenberger , Adrienne Lee
IPC分类号： E21B43/26 , C09K8/54 , C09K8/74 , E21B43/27 , E21B37/06
摘要： A method for the stimulation of a hydrocarbon-bearing formation, said method comprising the steps of providing a wellbore in need of stimulation; inserting a plug in the wellbore at a location slightly beyond a predetermined location; inserting a perforating tool having an outside surface and a spearhead or breakdown acid composition into the wellbore, wherein said outside surface of said tool is pre-treated prior to downhole insertion with a grease containing a first corrosion inhibitor adapted to eliminate/minimize/reduce the corrosion inflicted upon it by the exposure of the acid for the duration of the fracking or stimulation and wherein said acidic composition comprises a second corrosion inhibitor which reacts with said first corrosion inhibitor to generate a corrosion protective layer onto said surface; positioning the tool at said predetermined location; perforating the wellbore with the tool thereby creating a perforated area; allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for stimulation; removing the tool from the wellbore; and initiating the fracking of the perforated area using a stimulation fluid. Also disclosed is a corrosion inhibiting compound or composition for use with the acid composition.

6. 发明申请

US20200308472A1 Composition Useful in Sulfate Scale Removal 审中-公开
公开(公告)号：US20200308472A1
公开(公告)日：2020-10-01
申请号：US16823025
申请日：2020-03-18
申请人： Fluid Energy Group Ltd
发明人： Clay Purdy , Markus Weissenberger , Stig Magnor Nordaa , Adrienne Lee
IPC分类号： C09K8/528 , C02F5/12
摘要： The present invention discloses a novel aqueous composition for use in removing petroleum-contaminated barium sulfate scale from a surface contaminated with such, said composition comprising: a chelating agent and a counterion component selected from the group consisting of: Li5DTPA; Na5DTPA; K5DTPA; Cs5DTPA; Na4EDTA; K4EDTA; TEAH4DTPA; and TBAH5DTPA; a scale removal enhancer; and a non-ionic surfactant. There is also disclosed methods to use such compositions.

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