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公开(公告)号：US10717918B2
公开(公告)日：2020-07-21
申请号：US15987686
申请日：2018-05-23
申请人： Ecolab USA Inc.
IPC分类号： E21B37/06 , E21B41/00 , E21B41/02 , E21B43/16 , C09K8/524 , C09K8/528 , C09K8/54 , C09K8/588 , E21B21/00 , B02C23/00
摘要： Systems, methods and apparatus for injecting a solid chemical for inhibiting, decreasing or preventing precipitation and/or deposition of foulants and/or contaminants in oilfield tubulars. The use of solid chemicals or highly viscous fluids providing ease of shipment, greater economy in storage, shipment and delivery and increased ease of use.
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公开(公告)号：US20200172790A1
公开(公告)日：2020-06-04
申请号：US16780064
申请日：2020-02-03
摘要： A composition for dissolving drilling mud including barite particles and a polymer includes an enzyme capable of reacting with the polymer; a chelating agent capable of dissolving the barite particles; and a catalyst capable of promoting a reaction between the chelating agent and the barite particles.
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公开(公告)号：US10669470B2
公开(公告)日：2020-06-02
申请号：US15987623
申请日：2018-05-23
申请人： Ecolab USA Inc.
IPC分类号： E21B33/068 , E21B37/06 , E21B41/00 , E21B41/02 , B01F3/12 , C09K8/524 , C09K8/536 , C09K8/54
摘要： Systems, methods and apparatus for injecting a diluted solid chemical, a diluted highly viscous fluid, or a diluted fluidified solid for inhibiting, decreasing or preventing precipitation and/or deposition of foulants and/or contaminants in oilfield tubulars. The use of solid chemicals or highly viscous fluids providing ease of shipment, greater economy in storage, shipment and delivery and increased ease of use.
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公开(公告)号：US20200148942A1
公开(公告)日：2020-05-14
申请号：US16739434
申请日：2020-01-10
申请人： Ecolab USA Inc.
发明人： Christopher Waller , Kirk E. Wells , Trinh Tran , Pablo Munoz
摘要： Disclosed herein are compositions and methods for delaying crosslinking of aqueous crosslinkable polymers such as polysaccharides in injectable compositions for hydraulic fracturing and related applications. The compositions and methods provide delayed crosslinking at high temperatures and pressures, such as those encountered by hydraulic fracturing compositions injected into subterranean environments. Compositions include injectable solutions comprising a competing agent that is a reaction product of a dialdehyde having 2 to 4 carbon atoms with a non-polymeric cis-hydroxyl compound. Provided are methods of making and using delayed-crosslinking compositions comprising crosslinker compositions containing zirconium complexes and the competing agents.
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公开(公告)号：US10605049B2
公开(公告)日：2020-03-31
申请号：US15799176
申请日：2017-10-31
IPC分类号： E21B34/10 , E21B34/06 , E21B37/06 , E21B41/02 , F16K17/16 , F16K17/04 , F16K17/40 , F16K47/04
摘要： A chemical injection valve can include a valve stem reciprocably disposed relative to a primary seal, and a variable flow restrictor upstream of the primary seal relative to a direction of flow through the chemical injection valve. The variable flow restrictor restricts the flow when the valve stem is disengaged from the primary seal. A chemical injection system can include a chemical treatment pumped through a chemical injection valve and into an interior of a tubular string in a well, the chemical injection valve including a valve stem, a primary seal sealingly engaged with the valve stem in a closed position and disengaged from the valve stem in an open position, and a flow restrictor that restricts the flow of the chemical treatment downstream from the primary seal in the open position.
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公开(公告)号：US20200056455A1
公开(公告)日：2020-02-20
申请号：US16657047
申请日：2019-10-18
申请人： Michael W. DENNIS
摘要： Cleanout tools and related methods of operation. At least some of the example embodiments are cleanout tools including a tool body that defines an internal annular channel, a joiner coupled to the tool body, a sleeve telescoped within the joiner and tool body, and a ball disposed within the annular channel. The ball held within the annular channel by the sleeve, and the ball configured to move along the annular channel under force of fluid pumped into the cleanout tool. The ball creates a pulsing of fluid streams exiting the tool body. Moreover, in some example systems the fluid streams created by the tool body intersect the inside diameter of a casing at non-perpendicular angles.
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公开(公告)号：US10563112B2
公开(公告)日：2020-02-18
申请号：US15117638
申请日：2015-03-02
申请人： Cleansorb Limited
发明人： Ralph Edmund Harris
摘要： The present invention relates to a process for treating formation damage in an underground formation, including damage in the form of an oil-based drill-in fluid filter cake. The process makes use of a treatment fluid that contains a cyclodextrin or a starch and an enzyme capable of generating a cyclodextrin from the starch.
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公开(公告)号：US10519359B2
公开(公告)日：2019-12-31
申请号：US16230246
申请日：2018-12-21
IPC分类号： C04B20/02 , C04B28/04 , C09K8/467 , C09K8/493 , E21B37/06 , E21B33/13 , C04B40/00 , C04B28/02 , C04B20/10 , C04B14/28 , C04B111/00 , C04B103/00 , C04B22/00 , C04B16/06 , C04B14/30
摘要： A method of using a gas control additive to provide gas migration control in a wellbore includes the steps of mixing the gas control additive with a cement to form a cement slurry, where the gas control additive includes a semi-permeable membrane and a scrubbing agent, such that the semi-permeable membrane forms a shell around a core such that the scrubbing agent is in the core, introducing the cement slurry to the wellbore, and reacting the scrubbing agent with an antagonistic gas to produce a helper byproduct, where the antagonistic gas migrates from a hydrocarbon-bearing formation into the wellbore and permeates through the semi-permeable membrane to the core of the gas control additive.
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公开(公告)号：US10513916B2
公开(公告)日：2019-12-24
申请号：US15359257
申请日：2016-11-22
申请人： CARBO CERAMICS, INC.
发明人： Billy Dale Peters , Joshua Leasure , Todd Roper , Chad Cannan , Jeff Michael Hebert , Thu Lieng
摘要： An in-line treatment cartridge and methods of using same are disclosed. The in-line treatment cartridge can include a cylindrical body configured to allow fluid to flow therethrough and a plurality of particulates contained within the body. At least one particulate of the plurality of particulates can include a chemical treatment agent. The at least one chemical treatment agent can separate from the at least one particulate upon contact with a fluid.
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公开(公告)号：US10457850B2
公开(公告)日：2019-10-29
申请号：US15670826
申请日：2017-08-07
发明人： Hejian Sun , Leiming Li , Feng Liang
摘要： A low-corrosivity composition suitable for dissolving scale on metals. The scale includes iron sulfide scale. The composition includes an aqueous hydrogen peroxide solution comprising hydrogen peroxide; and an acidic solution comprising at least one acid, where the hydrogen peroxide and acid are present at concentrations such that the hydrogen peroxide does not break down to form visible bubbles at about room temperature, where the hydrogen peroxide and acid are present at concentrations such that iron sulfide scale is removed from a metal with iron sulfide scale, after the composition contacts the metal and iron sulfide scale at an elevated temperature greater than room temperature, and where the hydrogen peroxide and acid are present at concentrations such that pitting is not caused on the metal, the metal comprising carbon steel.
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