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公开(公告)号：EP3350132B1
公开(公告)日：2019-07-10
申请号：EP16771064.9
申请日：2016-09-16
IPC分类号： C02F1/52 , C02F5/10 , C02F1/68 , C02F101/10 , C02F103/08
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公开(公告)号：EP3383968A1
公开(公告)日：2018-10-10
申请号：EP16813278.5
申请日：2016-12-01
IPC分类号： C09K8/68 , C09K8/72 , C09K8/74 , C09K8/88 , C08F220/56
CPC分类号： C09K8/685 , C08F220/56 , C09K8/725 , C09K8/74 , C09K8/887 , C09K2208/12 , C09K2208/24 , C09K2208/26 , E21B43/26 , C08F220/06 , C08F2220/585
摘要： A fracturing fluid including a mixture of an aqueous copolymer composition including a copolymer, the copolymer having 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or a salt thereof, and a crosslinker. The crosslinker includes a metal, and the weight ratio of the metal to the copolymer is in a range of 0.01 to 0.08. Treating a subterranean formation includes introducing the fracturing fluid into a subterranean formation, and crosslinking the fracturing fluid in the subterranean formation to yield a crosslinked fracturing fluid. The crosslinked fracturing fluid has a viscosity of at least 500 cP for at least 80 minutes when the gel is subjected to a shear rate of 40 s−1 at a temperature in a range of 300° F. to 400° F.
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公开(公告)号：EP3350132A1
公开(公告)日：2018-07-25
申请号：EP16771064.9
申请日：2016-09-16
IPC分类号： C02F1/52 , C02F5/10 , C02F1/68 , C02F101/10 , C02F103/08
CPC分类号： C02F1/5272 , C02F1/683 , C02F5/10 , C02F2101/101 , C02F2103/08 , C02F2303/22
摘要： A method includes mixing seawater with a two-part additive system configured to precipitate sulfate from the seawater; removing the sulfate precipitates from the seawater; and delivering the seawater into an oilfield reservoir.
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公开(公告)号：EP3685010A1
公开(公告)日：2020-07-29
申请号：EP18783248.0
申请日：2018-09-19
发明人： GOMAA, Ahmed M. , NOAIMI, Khalid R. , AL-MUNTASHERI, Ghaithan A. , BAGADER, Noor Othman , KALGAONKAR, Rajendra Arunkumar , HUANG, Jin
IPC分类号： E21B43/267 , C09K8/80 , C09K8/70 , C09K8/68 , C09K8/66
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公开(公告)号：EP3684880A1
公开(公告)日：2020-07-29
申请号：EP18783235.7
申请日：2018-09-19
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公开(公告)号：EP3469036A1
公开(公告)日：2019-04-17
申请号：EP17733249.1
申请日：2017-06-13
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7.发明公开
公开(公告)号：EP3455323A1
公开(公告)日：2019-03-20
申请号：EP17723883.9
申请日：2017-05-05
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8.发明公开
公开(公告)号：EP3580298A1
公开(公告)日：2019-12-18
申请号：EP18707493.5
申请日：2018-02-12
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公开(公告)号：EP3464507A1
公开(公告)日：2019-04-10
申请号：EP17729677.9
申请日：2017-05-31
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公开(公告)号：EP3402860A1
公开(公告)日：2018-11-21
申请号：EP16725699.9
申请日：2016-05-16
CPC分类号： C09K8/685 , C09K8/665 , C09K8/887 , C09K8/90 , C09K2208/10
摘要： A fracturing fluid including a base fluid including salt water, a polymer, a crosslinker, and a nanomaterial. The crosslinker may include a Zr crosslinker, a Ti crosslinker, an Al crosslinker, a borate crosslinker, or a combination thereof. The nanomaterial may include ZrO2 nanoparticles, TiO2 nanoparticles, CeO2 nanoparticles; Zr nanoparticles, Ti nanoparticles, Ce nanoparticles, metal-organic polyhedra including Zr, Ti, Ce, or a combination thereof; carbon nanotubes, carbon nanorods, nano graphene, nano graphene oxide; or any combination thereof. The viscosity and viscosity lifetime of fracturing fluids with both crosslinkers and nanomaterials are greater than the sum of the effects of crosslinkers and nanomaterials taken separately. Moreover, this synergistic effect offers significant, practical advantages, including the ability to use salt water rather than fresh water for fracturing fluids, the ability to reduce polymer loading to achieve a desired viscosity, and the ability to achieve better formation cleanup after the fracturing treatment.
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