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公开(公告)号：US12173597B2
公开(公告)日：2024-12-24
申请号：US18045994
申请日：2022-10-12
Inventor： Lee J. Hall , Dragan Stojkovic
IPC: E21B43/267 , C09K8/80 , E21B43/119
Abstract: Methods for completing hydrocarbon wells using variable rate fracturing are provided herein. One method includes positioning a perforation device within a tubular conduit of a downhole tubular, where the downhole tubular extends within a wellbore, and where the wellbore extends within a subsurface region, as well as perforating the downhole tubular using the perforation device to define perforations within the downhole tubular. The method also includes pumping a slurry including fracturing fluid and a lightweight proppant into the tubular conduit according to a variable pumping rate schedule to fracture zones of the subsurface region that are proximate to the perforations, forming corresponding fractures within the subsurface region. The method further includes flowing the slurry into the fractures, via the perforations, to prop the fractures with the lightweight proppant, where the lightweight proppant includes granules formed from a polyolefin, petroleum coke, and/or a polyaromatic hydrocarbon resin.
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公开(公告)号：US11905813B2
公开(公告)日：2024-02-20
申请号：US18055206
申请日：2022-11-14
Inventor： Timothy J. Nedwed , Dragan Stojkovic , Lee J. Hall
IPC: E21B43/267 , C09K8/64 , C09K8/66 , C09K8/80
CPC classification number: E21B43/267 , C09K8/64 , C09K8/665 , C09K8/80
Abstract: A slurry including a density-tunable heavy fracturing fluid and a method for completing a hydrocarbon well using such a slurry are provided herein. The slurry includes a proppant and the density-tunable heavy fracturing fluid, where the density-tunable heavy fracturing fluid includes a pseudo heavy fluid suspension, a concentrated aqueous solution of a soluble heavy compound, and/or a high-density organic solution. The density of the density-tunable heavy fracturing fluid is between 1.25 grams/milliliter (g/ml) and 3.4 g/ml. Moreover, the density of the density-tunable heavy fracturing fluid is selected based on the density of the proppant. According to the method provided herein, the slurry is used to provide for more effective placement of the proppant within the fractures than can be achieved using only a slurry including conventional fracturing fluid and the proppant.
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公开(公告)号：US12139972B2
公开(公告)日：2024-11-12
申请号：US17228763
申请日：2021-04-13
Inventor： Michael C. Romer , P. Matthew Spiecker , Peter A. Gordon , Dragan Stojkovic
Abstract: A capacitive cable, as well as a method for operating a downhole electro-hydraulic (EH) tool using the capacitive cable, are described herein. The capacitive cable includes at least one standard conductor and at least one capacitive conductor including integrated wire-shaped capacitors. The method includes inserting a tool string including the capacitive cable and an attached downhole EH tool into a wellbore and conducting power from the surface to the downhole EH tool via the standard conductor(s) of the capacitive cable. The method also includes storing electrical energy downhole within the capacitive conductor(s) of the capacitive cable, and activating the downhole EH tool to provide for the rapid release of the electrical energy from the capacitive conductor(s) into the downhole EH tool, initiating an electro-hydraulic event within the wellbore.
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4.发明授权公开(公告)号：US12043797B2
公开(公告)日：2024-07-23
申请号：US18054345
申请日：2022-11-10
Inventor： Dragan Stojkovic , Abdelhadi Sahnoune , Haiqing Peng , Lee J. Hall , Kendal K. Decker
IPC: C09K8/80 , C09K8/68 , E21B43/267
CPC classification number: C09K8/805 , C09K8/685 , E21B43/267
Abstract: Proppant particulates like sand are commonly used in hydraulic fracturing operations to maintain one or more fractures in an opened state following the release of hydraulic pressure. Fracturing fluids and methods of hydraulic fracturing may also use proppant particulates composed of high-flow polyolefin coated mineral particles (referred to as high-flow polyolefin coated mineral proppant particulates). In some instances, the high-flow polyolefin-coated mineral proppant particulates have a particle density of equal to or less than about 1.35 grams per cubic centimeter, and further may be prepared using a one-pot hot melt process.
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