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公开(公告)号：US12123290B2
公开(公告)日：2024-10-22
申请号：US18264293
申请日：2022-01-18
摘要： A technique facilitates stimulation of multiple well zones along a multilayered reservoir. The technique utilizes equipment constructed to enable performance of the stimulation job along the multiple well zones, i.e. two or more well zones, prior to gravel packing the multiple well zones. The equipment enables performance of the stimulation job during a single trip downhole. Subsequent actuation of the equipment further enables a multizone gravel packaging operation during the same trip downhole.
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公开(公告)号：US12104117B2
公开(公告)日：2024-10-01
申请号：US18362741
申请日：2023-07-31
IPC分类号： C09K8/54 , C08F293/00 , C09K8/60 , C09K8/74 , E21B43/27
CPC分类号： C09K8/54 , C08F293/005 , C09K8/604 , C09K8/74 , E21B43/27 , C08F2438/03 , C09K2208/32
摘要： A composition for treating a formation includes a surfactant including an amphiphilic block copolymer having a first block and a second block and an acid. The amphiphilic block copolymer is a reaction product of a first monomer and a second monomer via a reversible addition-fragmentation chain transfer polymerization (RAFT) in a two-step reaction using a chain transfer agent (CTA) and a radical initiator. The surfactant favors adsorption onto a surface of the formation such that a temporary barrier is formed, thereby attenuating a reaction rate between the acid and the formation.
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公开(公告)号：US20240295168A1
公开(公告)日：2024-09-05
申请号：US18592785
申请日：2024-03-01
申请人： OVINTIV CANADA ULC
发明人： ASHLEY CAMERON KALENCHUK , JOHN MICHAEL GREEN , BLAINE RICHARD ROTH , DAVID MACEACHERN THOMPSON
IPC分类号： E21B43/27 , E21B23/06 , E21B43/116 , E21B43/267
CPC分类号： E21B43/27 , E21B23/06 , E21B43/116 , E21B43/267
摘要： A method for perforating a formation and stimulating the formation with an acidic composition is provided. In particular, the method comprises using a separation layer to separate the acidic composition from perforating tools during perforation. The present invention can be used in combination with fracturing such as hydraulic fracturing.
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公开(公告)号：US12018210B2
公开(公告)日：2024-06-25
申请号：US18069091
申请日：2022-12-20
发明人： Clay Purdy , Markus Weissenberger
IPC分类号： E21B43/28 , C09K8/03 , C09K8/06 , C09K8/42 , C09K8/46 , C09K8/54 , C09K8/60 , C09K8/74 , C23F11/04 , E21B21/00 , E21B41/02 , E21B43/119 , E21B43/26 , E21B43/27 , E21B33/12 , E21B43/116
CPC分类号： C09K8/74 , C09K8/032 , C09K8/06 , C09K8/426 , C09K8/46 , C09K8/54 , C09K8/602 , C23F11/04 , E21B21/00 , E21B41/02 , E21B43/119 , E21B43/26 , E21B43/27 , E21B43/283 , C09K2208/32 , E21B33/12 , E21B43/116
摘要： The invention includes methods for stimulating a hydrocarbon-bearing formation by perforating a wellbore and introducing an acidic composition in the wellbore. A preferred embodiment includes inserting an isolation plug in the wellbore at a predetermined location followed by inserting a perforating tool and a breakdown acid into the wellbore. The wellbore is perforated by the tool to create a perforated area. The breakdown acid is allowed to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for stimulation. The tool is then removed from the wellbore wherein stimulation of the perforated area is thereby initiated. Also disclosed is a corrosion inhibiting composition for use with the acidic composition.
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公开(公告)号：US12012835B2
公开(公告)日：2024-06-18
申请号：US17606898
申请日：2020-05-08
IPC分类号： E21B43/117 , E21B23/06 , E21B23/08 , E21B33/12 , E21B33/129 , E21B33/13 , E21B33/134 , E21B34/06 , E21B34/14 , E21B43/116 , E21B43/12 , E21B43/26 , E21B43/267 , E21B43/27 , E21B47/092 , E21B47/095 , E21B47/26
CPC分类号： E21B43/261 , E21B23/06 , E21B23/08 , E21B33/12 , E21B33/1294 , E21B33/13 , E21B33/134 , E21B34/063 , E21B34/14 , E21B43/116 , E21B43/117 , E21B43/12 , E21B43/267 , E21B43/27 , E21B47/092 , E21B47/095 , E21B47/26 , E21B2200/08
摘要： A wellbore system for perforating a subterranean formation including a dissolvable perforating gun that may be wirelessly operated to fire at a predetermined wellbore location and thereafter fragmented and dissolved with wellbore fluids. The perforating gun may take the form of a strip gun with an elongated rod or other charge holder carrying a plurality of exposed perforating charges thereon. The exposed shaped charges may each be equipped with an individual charge cover or filler material disposed over a liner that forms a jet when the shaped charge is detonated. A wiper to facilitate pumping the perforating gun through the wellbore and may include an initiator for detecting a signal or condition indicative of the perforating gun having reached a predetermined location to cause the perforating gun to fire.
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公开(公告)号：US20240183261A1
公开(公告)日：2024-06-06
申请号：US18557512
申请日：2021-04-28
申请人： UNIQUEM INC.
发明人： Amir A. MIRZAEI , Hirbod RAD
CPC分类号： E21B43/27 , C09K8/54 , C09K8/602 , C09K8/703 , C09K8/74 , E21B37/06 , E21B43/116 , C09K2208/32
摘要： Described herein is a fluid for the fracking or stimulation of a hydrocarbon-bearing formation, the fluid comprising a colloidal gas aphron-containing acid (CGAA) composition. The fluid is typically for use in cleaning of perforation debris and may be applied before, during, and/or after perforation. Also described are various methods, including methods of fracking, stimulation, and perforation.
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公开(公告)号：US20240159135A1
公开(公告)日：2024-05-16
申请号：US18552296
申请日：2022-03-24
发明人： Haiyan Zhao , Murtaza Ziauddin , Temiloluwa Iyenoma Yusuf , Patrice Abivin , Juan-Carlos Santamaria
摘要： Methods and compositions for treating a siliceous geologic formation are described herein. An aqueous treatment composition for treating such formations includes an acid having molecular weight less than about 200, or an ammonium or sodium salt thereof, an HF source, and from about 0.1 wt % to about 2.0 wt % of a fluoride scale inhibitor, the aqueous treatment composition having a pH from about 1.0 to about 3.0.
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公开(公告)号：US20240124763A1
公开(公告)日：2024-04-18
申请号：US18472513
申请日：2023-09-22
发明人： Andrew Bryce Conway
IPC分类号： C09K8/60 , C09K8/52 , C09K8/528 , C09K8/62 , E21B43/25 , E21B43/26 , E21B43/267 , E21B43/27 , E21B43/28
CPC分类号： C09K8/605 , C09K8/52 , C09K8/528 , C09K8/602 , C09K8/62 , E21B43/25 , E21B43/26 , E21B43/267 , E21B43/27 , E21B43/28 , C09K8/72
摘要： Formulations and methods for stimulating the production from wells in nano-darcy shale formations. In one embodiment, the method includes injecting a treatment mixture containing a metal complexing agent into a nano-darcy shale formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the treatment mixture is pumped from the subsurface. This has been shown to stimulate well production in shale formations. Without being held to a particular theory it appears that the metal complexing agent is binding with naturally occurring metals in the shale formation, and particularly divalent metal ions, which are then extracted with the spent fluid. This removal of naturally occurring metals may be increasing the permeability of the formation in the contact region adjacent to the well, thereby causing the observed increased production.
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公开(公告)号：US20240067868A1
公开(公告)日：2024-02-29
申请号：US18497456
申请日：2023-10-30
CPC分类号： C09K8/72 , E21B43/27 , C09K2208/10
摘要： The present application relates to compositions and methods for controlled delivery of acid to a desired location, for instance to a subterranean formation.
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公开(公告)号：US20230417132A1
公开(公告)日：2023-12-28
申请号：US18334699
申请日：2023-06-14
申请人： TONGJI UNIVERSITY
发明人： Bo Li , Guansheng Han
IPC分类号： E21B43/27 , E21B47/005
CPC分类号： E21B43/27 , E21B47/005
摘要： Disclosed is a method for exploiting underground resources with a negative thixotropic fluid. The method includes: determining a fault distribution and structural features according to a stratum structure and hydrogeological data; forming a connected fracture network in a stratum through a hydraulic fracturing method; injecting the negative thixotropic fluid into the stratum by means of an injection well at a set injection pressure, to fill a fault and a fracture network with the negative thixotropic fluid; gradually increasing an injection pressure of the negative thixotropic fluid until the fault or a fracture in the reservoir is induced to generate a slip, and stopping injection; forcing the negative thixotropic fluid that loses negative thixotropy out of the fault and the fracture network; and carrying out production operation until the set production condition is reached, and injecting a negative thixotropy fluid anew to execute steps circularly.
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