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公开(公告)号：US11479705B1
公开(公告)日：2022-10-25
申请号：US17829877
申请日：2022-06-01
发明人： Sagheer A. Onaizi
摘要： A method of drilling a subterranean geological formation is described. The method includes driving a drill bit to form a wellbore in the subterranean geological formation thereby producing a formation fluid. The method includes injecting a drilling fluid into the subterranean geological formation through the wellbore. The drilling fluid includes 1 to 3 wt. % of a weighting agent which includes hydrophobic metallic zinc nanoparticles including a metallic core and organic ligands present on a surface of the metallic core, based on a total weight of the drilling fluid. The drilling fluid includes an invert emulsion including a continuous phase and a dispersive phase including water.
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2.发明授权公开(公告)号：US11149190B2
公开(公告)日：2021-10-19
申请号：US16555436
申请日：2019-08-29
摘要： Treatment fluids for acid diversion during acid stimulation of a subterranean formation may include at least an acidizing fluid, a nanoparticle dispersion, and an activator. The treatment fluid may include from 40 weight percent to 70 weight percent acidizing fluid based on the total weight of the treatment fluid. The treatment fluid may include from 20 weight percent to 40 weight percent nanoparticle dispersion based on the total weight of the treatment fluid. The treatment fluid may include from 5 weight percent to 15 percent activator based on the total weight of the treatment fluid. Methods of treating a subterranean formation with the treatment fluids are also disclosed.
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公开(公告)号：US11008832B2
公开(公告)日：2021-05-18
申请号：US16300123
申请日：2017-05-10
发明人： Eric Van Oort , Besmir B. Hoxha , Ali Karimi Vajargah , Robert O. Williams, III , Hugh Smyth , Silvia Ferrati
IPC分类号： E21B36/00 , E21B33/13 , E21B43/24 , C09K8/50 , C09K8/76 , C09K8/516 , C09K8/92 , C09K8/035 , C09K8/03 , C09K8/42 , E21B21/00 , E21B33/138
摘要： Disclosed herein are compositions and methods for reducing fluid loss in a well bore. Also disclosed herein are methods for wellbore strengthening and increasing the integrity of the borehole of an oil or gas well. In particular, disclosed are methods for artificially increasing the temperature of a subsurface formation in the wellbore to increase the apparent wellbore strength.
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4.发明申请公开(公告)号：US20210062075A1
公开(公告)日：2021-03-04
申请号：US16555436
申请日：2019-08-29
摘要： Treatment fluids for acid diversion during acid stimulation of a subterranean formation may include at least an acidizing fluid, a nanoparticle dispersion, and an activator. The treatment fluid may include from 40 weight percent to 70 weight percent acidizing fluid based on the total weight of the treatment fluid. The treatment fluid may include from 20 weight percent to 40 weight percent nanoparticle dispersion based on the total weight of the treatment fluid. The treatment fluid may include from 5 weight percent to 15 percent activator based on the total weight of the treatment fluid. Methods of treating a subterranean formation with the treatment fluids are also disclosed.
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公开(公告)号：US20210017445A1
公开(公告)日：2021-01-21
申请号：US16910807
申请日：2020-06-24
发明人： Weiyu CHEN , Liqiang ZHAO , Zhifeng LUO , Juan DU , Pingli LIU , Nianyin LI , Kun XU
摘要： The present invention relates to a carbonate reservoir filtration-loss self-reducing acid fracturing method. The carbonate reservoir filtration-loss self-reducing acid fracturing method comprises the steps: (1) calculating a fracture pressure and a fracture extension pressure of a reconstructed reservoir; (2) injecting an agent A into a stratum under a pressure higher than the stratum fracture pressure, so that fractures are generated on the stratum; (3) injecting an agent B into the stratum under a pressure higher than the stratum fracture pressure, such that the agent B extends the fractures and communicates with a natural fracture net; (4) pumping an acid liquor system agent C with a high etching power into the stratum under a pressure higher than the extension pressure but lower than the fracture pressure to improve the conductivity of the fractures; (5) injecting a displacing liquid agent D under a pressure lower than the stratum fracture pressure to jack acid liquor in a well casing into the stratum; and (6) shutting down a well and performing flow-back. The agent A is a gel acid or VES acid, the agent B is a filtration-loss self-reducing gel acid or filtration-loss self-reducing VES acid, the agent C is closed acid, and the agent D is a displacing liquid. According to the method of the present invention, precipitation type solid filter cakes are formed on wall surfaces of the fractures by utilizing a filtration-loss self-reducing system, so as to perform temporary blocking to reduce the filtration loss. The technology is simple with easy injection, and the filtration-reducing agent is easy to disperse and flow back, and the method is safe and environment-friendly.
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6.发明申请公开(公告)号：US20180251673A1
公开(公告)日：2018-09-06
申请号：US15754048
申请日：2015-09-30
摘要： The rapid reaction of hydrofluoric acid with siliceous materials can make it difficult to increase the permeability of subterranean formations containing siliceous minerals. Methods for stimulating a subterranean formation can comprise: providing a latent hydrofluoric acid composition comprising a degradable matrix, and a hydrofluoric acid precursor dispersed in the degradable matrix; introducing a first treatment fluid containing the latent hydrofluoric acid composition in a non-dissolved form into a wellbore penetrating a subterranean formation comprising a siliceous material; differentially depositing the latent hydrofluoric acid composition upon a portion of the siliceous material in one or more locations; degrading at least a portion of the degradable matrix, thereby exposing at least a portion of the hydrofluoric acid precursor; converting the exposed hydrofluoric acid precursor into hydrofluoric acid; and reacting the hydrofluoric acid with the siliceous material where the latent hydrofluoric acid composition was deposited.
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公开(公告)号：US09995120B2
公开(公告)日：2018-06-12
申请号：US14540611
申请日：2014-11-13
摘要： Implementations provide flowing of fracturing fluids to subterranean zones. Actions can include In some examples, a method includes actions of flowing a mixture of a first quantity of acid and a second quantity of a polymer diverting agent (PDA) having a viscosity that changes with acid concentration to a first portion of a subterranean zone, wherein the first quantity decreases as the acid reacts with metal in the first portion, and wherein the viscosity of the PDA increases as the first quantity decreases to form a PDA gel and flowing a third quantity of acid through the subterranean zone, wherein the PDA gel diverts the acid from the first portion to a second portion of the subterranean zone.
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公开(公告)号：US09976390B2
公开(公告)日：2018-05-22
申请号：US15083334
申请日：2016-03-29
申请人： Scott Gregory Nelson
发明人： Scott Gregory Nelson
IPC分类号： E21B37/06 , C09K8/52 , E21B33/134 , C09K8/62 , C09K8/70 , C09K8/80 , E21B43/26 , E21B43/267 , C09K8/76 , E21B33/138 , C09K8/575 , C09K8/68 , E21B43/04 , C09K8/035 , C09K8/12 , C09K8/34 , E21B21/00
CPC分类号： E21B37/06 , C09K8/035 , C09K8/12 , C09K8/34 , C09K8/52 , C09K8/5756 , C09K8/62 , C09K8/68 , C09K8/685 , C09K8/70 , C09K8/703 , C09K8/706 , C09K8/76 , C09K8/80 , C09K2208/26 , E21B21/00 , E21B21/003 , E21B33/134 , E21B33/138 , E21B43/04 , E21B43/26 , E21B43/267
摘要： A method of drilling a wellbore in a subterranean formation comprises circulating a water-based or oil-based drilling fluid in the subterranean formation; the water-based or oil-based drilling fluid comprising a carrier, and a superabsorbent polymer present in an amount effective to reduce fluid leakoff during the drilling operation, the superabsorbent polymer comprising crosslinks formed before the superabsorbent polymer is combined with the carrier.
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公开(公告)号：US09957432B2
公开(公告)日：2018-05-01
申请号：US15022467
申请日：2013-11-05
发明人： Kay A. Galindo , Matthew Miller
IPC分类号： C09K8/516 , C09K8/035 , E21B43/25 , C09K8/03 , C09K8/40 , C09K8/502 , C09K8/70 , C09K8/76 , C09K8/92 , E21B21/00 , C09K8/528 , C09K8/60
CPC分类号： C09K8/035 , C09K8/03 , C09K8/40 , C09K8/502 , C09K8/516 , C09K8/528 , C09K8/602 , C09K8/605 , C09K8/70 , C09K8/76 , C09K8/92 , C09K2208/08 , C09K2208/12 , C09K2208/22 , C09K2208/26 , C09K2208/28 , C09K2208/32 , E21B21/003 , E21B43/25
摘要： A method of treating a portion of wellbore comprising introducing a treatment fluid into the portion of the wellbore. The treatment fluid comprises a base fluid and an additive comprising a plurality of fibrillated fibers. The amount of fibrillation is at least sufficient such that at least a portion of the fibrillated fibers form a fiber network in the base fluid.
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公开(公告)号：US20170198190A1
公开(公告)日：2017-07-13
申请号：US15324347
申请日：2014-08-06
CPC分类号： C09K8/36 , C09K8/467 , C09K8/487 , C09K8/62 , C09K8/76 , C09K8/84 , C09K2208/08 , C09K2208/24 , C09K2208/26 , C09K2208/32 , E21B21/00 , E21B33/138 , E21B43/16 , E21B43/25 , E21B43/26
摘要： Various embodiments disclosed relate to diverter compositions including an invert emulsion. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include placing in a subterranean formation a diverter composition including an invert emulsion. The invert emulsion includes a continuous oil phase that includes at least one rheological modifier. The invert emulsion also includes an internal aqueous phase.
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