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公开(公告)号：US20240336832A1
公开(公告)日：2024-10-10
申请号：US18132342
申请日：2023-04-07
摘要： Foamed treatment fluids and methods for treating a wellbore with a foamed treatment fluid. An example method prepares a foamed treatment fluid by combining an aqueous base fluid, a foaming agent, and a propoxylates. The foamed treatment fluid is introduced into a wellbore and a wellbore operation is performed with the foamed treatment fluid.
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公开(公告)号：US12043791B2
公开(公告)日：2024-07-23
申请号：US18251366
申请日：2020-11-02
发明人： Ksenia Mikhailovna Kaprielova , Nikita Yurievich Silko , Bipin Jain , Elena Vladimirovna Danilevich
CPC分类号： C09K8/426 , C09K8/44 , C09K8/512 , C09K8/514 , E21B21/003 , E21B33/138 , C09K2208/08 , E21B2200/08
摘要： The method of fluid loss control is provided for the case of high-rate fluid loss. Two treatment fluids are provided, where a first treatment fluid comprising a carrier fluid, solids and a first polyelectrolyte, and a second treatment fluid comprising a carrier fluid and a second polyelectrolyte. Two polyelectrolytes in both treatment fluids are oppositely charged under the pumping conditions, being taken from the classes of polyanionic and polycationic polymers. Two treatment fluids are pumped separately to the zone with fluid loss. The mixing of two treatment fluids into the well creates low-permeability agglomerates that plugs the fluid leakage channel, preventing or reducing further fluid movement between the wellbore and subterranean formation. The plugging of thief zone can be temporary or permanent.
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公开(公告)号：US20240218232A1
公开(公告)日：2024-07-04
申请号：US18606269
申请日：2024-03-15
发明人： Yenny CHRISTANTI , Konstantin Viktorovich VIDMA , Changsheng XIANG , Samuel DANICAN , Valerie Gisele Helene LAFITTE
IPC分类号： C09K8/508 , C09K8/514 , E21B33/12 , E21B33/138
CPC分类号： C09K8/5083 , C09K8/514 , E21B33/1208 , E21B33/138 , C09K2208/08 , C09K2208/28 , E21B2200/08
摘要： A wellbore treatment fluid is disclosed herein, the fluid comprising a butenediol vinyl alcohol copolymer. Also, a wellbore treatment fluid comprises a dissolvable material capable of forming a gel upon hydration, the dissolvable material having a cylindrical cross-sectional shape. Methods of treating a subterranean formation includes introducing a treatment fluid comprising a butenediol vinyl alcohol copolymer, and creating a plug with the treatment fluid.
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公开(公告)号：US11959356B2
公开(公告)日：2024-04-16
申请号：US17665002
申请日：2022-02-04
IPC分类号： E21B33/138 , C09K8/08 , C09K8/40 , C09K8/42 , C09K8/46 , E21B43/30 , F24T10/10 , F24T10/13 , F24T50/00 , F24T10/00
CPC分类号： E21B33/138 , C09K8/08 , C09K8/40 , C09K8/424 , C09K8/46 , E21B43/305 , F24T10/10 , F24T10/13 , F24T50/00 , F24T2010/50 , F24T2010/53 , Y02E10/10 , Y02W30/91
摘要： Wellbore synthesis techniques are disclosed suitable for use in geothermal applications. Embodiments are provided where open hole drilled wellbores are sealed while drilling to form an impervious layer at the wellbore/formation interface. The techniques may be chemical, thermal, mechanical, biological and are fully intended to irreversibly damage the formation in terms of the permeability thereof. With the permeability negated, the wellbore may be used to create a closed loop surface to surface geothermal well operable in the absence of well casing for maximizing thermal transfer to a circulating working fluid. Formulations for the working and drilling fluids are disclosed.
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5.发明授权公开(公告)号：US11952532B2
公开(公告)日：2024-04-09
申请号：US16894100
申请日：2020-06-05
发明人： Ziyad Kaidar , Abdulkareem Alsofi , Amer Alanazi
IPC分类号： E21B33/138 , C09K8/514 , C09K8/516 , C09K8/588
CPC分类号： C09K8/514 , C09K8/516 , C09K8/588 , E21B33/138
摘要： Formation treatment fluid compositions and methods are provided that include an aqueous base fluid, where the aqueous base fluid comprises one or more salts; and sago. The profile modification fluid may include sago in an amount in the range from 50,000 ppm to 100,000 ppm. Formation treatment fluid compositions may also include an aqueous base fluid, where the aqueous base fluid comprises one or more salts, and sago, where the formation treatment fluid may include sago in an amount in the range from 10,000 ppm to 50,000 ppm. Methods for using the formation treatment fluid may include introducing into a targeted stratum of a subterranean formation a treatment fluid. The subterranean treatment fluid may include an aqueous base fluid, where the aqueous base fluid includes one or more salts, sago, and the treatment fluid may include sago in an amount in the range from 10,000 ppm to 100,000 ppm.
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公开(公告)号：US11939825B2
公开(公告)日：2024-03-26
申请号：US17644668
申请日：2021-12-16
IPC分类号： E21B17/10 , E21B21/00 , E21B33/138 , E21B34/14 , E21B37/00
CPC分类号： E21B21/003 , E21B17/1078 , E21B33/138 , E21B34/14 , E21B37/00
摘要： A tool is used to inject a rapidly solidifying sealant into and across highly fractured oil and gas wellbore formations when a significant loss circulation zone or event is encountered. A system including the tool allows for application of the sealant to the formation without requiring removal of the drill string from the hole. The tool may have operatively associate with containers storing sealant and or sealant components that are provided downhole from the surface via wireline or the like.
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公开(公告)号：US20240093571A1
公开(公告)日：2024-03-21
申请号：US18456735
申请日：2023-08-28
发明人： Terizhandur S. Ramakrishnan , Quincy K. Elias , Hua Zhang , Youssef Magdy Abdou Mohamed Elkady , Yixuan Feng
IPC分类号： E21B33/13 , C09K8/42 , C09K8/46 , C22C12/00 , E21B29/12 , E21B33/12 , E21B33/134 , E21B33/138 , E21B33/14 , G01N33/2028
CPC分类号： E21B33/13 , C09K8/426 , C09K8/46 , C22C12/00 , E21B29/12 , E21B33/12 , E21B33/1208 , E21B33/134 , E21B33/138 , E21B33/143 , G01N33/2028
摘要： A wellbore is plugged using a bismuth alloy. In one embodiment, the bismuth alloy comprises an alloy of bismuth and tin. In another embodiment, the bismuth alloy comprises an alloy of bismuth and silver. The wellbore can be arranged so that a liquid bismuth alloy sets with an excess pressure of the plug relative to the borehole fluid pressure along a desired seal height distance. Other aspects are described and claimed.
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公开(公告)号：US11913302B2
公开(公告)日：2024-02-27
申请号：US17538323
申请日：2021-11-30
发明人： Andrew Cuthbert , Arash Haghshenas
IPC分类号： E21B27/00 , E21B33/076 , E21B33/12 , E21B33/138
CPC分类号： E21B33/138 , E21B27/00 , E21B33/1208
摘要： Methods and system involving well control. In some embodiments, the system includes an injection spool coupled to a subsea wellhead including an inlet, a manifold in fluid communication with the inlet of the injection spool for mixing one or more components of a well control treatment composition, a first container for storing natural gas in fluid communication with the manifold, and a second container for storing nitrogen in fluid communication with the manifold.
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公开(公告)号：US20240060385A1
公开(公告)日：2024-02-22
申请号：US18384397
申请日：2023-10-27
申请人： BiSN Tec Ltd.
发明人： Paul Carragher
CPC分类号： E21B33/1212 , E21B36/00 , E21B43/08 , E21B43/103 , E21B36/003 , E21B33/1208 , E21B29/10 , E21B33/13 , E21B33/138
摘要： A tool and method providing a eutectic alloy based downhole tool comprising a tubular body alloy located on an outer surface thereof, said tool having an outer diameter with a clearance from the inner diameter of the well. The downhole tool is delivered to a target region within an oil/gas well where the tool is to be deployed. Once the tool is in position within the well a tubular expanding tool is run through the interior of the tubular body to increase the outer diameter of the sealing downhole tool and in so doing reduce the clearance between the alloy and the well. A heater is deployed within the tubular body proximal to the alloy and operated to melt the alloy. The alloy is then allowed to cool and resolidify, whereby the tool is sealed in place within the target region of the well using the alloy.
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公开(公告)号：US11891458B2
公开(公告)日：2024-02-06
申请号：US17658173
申请日：2022-04-06
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC CORP.
发明人： Chao Yang , Chen Wang , Zequn Yin , Quanjie Liu
CPC分类号： C08B31/003 , C08B31/12 , C09K8/426 , E21B21/003 , E21B33/138
摘要： A preparation method of the starch-containing microsphere includes the steps of first reacting starch with a low concentration of epichlorohydrin, and then reacting the resultant product with a surfactant, followed by final crosslinking to give microspheres. The starch-containing microspheres thus prepared are polydisperse starch-containing microspheres with a uniform particle size distribution, with the particle size being in a range of 0.1-500 μm.
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