公开(公告)号：US11814578B2

公开(公告)日：2023-11-14

申请号：US17319414

申请日：2021-05-13

Applicant: ConocoPhilips Company ,  University of Kansas

Inventor： Huili Guan ,  Cory Berkland ,  Ahmad Moradi-Araghi ,  Jenn-Tai Liang ,  David R. Zornes ,  Riley B Needham ,  James H. Hedges ,  Min Cheng ,  James P. Johnson ,  Faye L. Scully

IPC: C09K8/588 ,  C09K8/88 ,  C09K8/92 ,  E21B33/138

CPC classification number: C09K8/588 ,  C09K8/88 ,  C09K8/887 ,  C09K8/92 ,  E21B33/138

Abstract: The invention is directed to delayed gelation agents comprising a degradable polymeric cage containing therein one or more gelation agents. The cage degrades in situ, e.g, in an oil reservoir, thus releasing the gelation agent(s), which can then crosslink second polymers in situ to form a gel.

公开(公告)号：US11685802B2

公开(公告)日：2023-06-27

申请号：US17354318

申请日：2021-06-22

Applicant: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.

Inventor： Nacu Hernandez ,  Eric W. Cochran ,  Ronald Christopher Williams ,  Austin Hohmann

IPC: C08F220/68 ,  C08F220/44 ,  C08F293/00 ,  C08K5/00 ,  C08L95/00 ,  C09K8/88 ,  C08F220/20 ,  C09J153/00 ,  C09K8/68 ,  C09K8/80

CPC classification number: C08F220/68 ,  C08F220/20 ,  C08F220/44 ,  C08F293/005 ,  C08K5/0016 ,  C08L95/00 ,  C09J153/00 ,  C09K8/68 ,  C09K8/88 ,  C08F2438/03 ,  C08F2500/01 ,  C08L2555/84 ,  C09K8/80 ,  C08L95/00 ,  C08L53/00

Abstract: The present application relates to a multiblock copolymer comprising at least one PA block, at least one PB block, and at least one PC block. PC block is positioned between PA block and PB block, where PC block is a rubber block, and where PA represents a polymer block comprising one or more units of monomer A, PB represents a polymer block comprising one or more units of monomer B, and PC represents a polymer block comprising one or more units of monomer C, with monomers A and B being the same or different.

公开(公告)号：US20190128791A1

公开(公告)日：2019-05-02

申请号：US16229616

申请日：2018-12-21

Applicant: Chevron U.S.A. Inc.

Inventor： Douglas K. McCARTY ,  Jon E. BURGER ,  Lin LI ,  Guo-Qing TANG ,  Marcus O. WIGAND ,  Varadarajan DWARAKANATH ,  Dyung Tien VO

IPC: G01N15/08 ,  G01N33/24 ,  C09K8/88 ,  C09K8/68 ,  C09K8/66 ,  C09K8/60 ,  E21B49/08 ,  E21B49/00 ,  E21B43/26

CPC classification number: G01N15/082 ,  C09K8/602 ,  C09K8/605 ,  C09K8/66 ,  C09K8/68 ,  C09K8/88 ,  C09K2208/28 ,  E21B43/26 ,  E21B49/00 ,  E21B49/08 ,  G01N33/24

Abstract: A workflow to optimize a fracturing fluid for injection into a subterranean formation is provided. The workflow comprises measurement of fundamental properties and characteristics of reservoir rock and fluid, their interaction with fracturing fluid, computer-based models and laboratory performance testing to select preferred fracturing base fluid and additives package for use in fracturing/re-fracturing stimulation of specific shale formations to enhance hydrocarbon recovery.

公开(公告)号：US20190040728A1

公开(公告)日：2019-02-07

申请号：US16074738

申请日：2016-06-23

Applicant: Halliburton Energy Services, Inc.

Inventor： Philip D. NGUYEN ,  Loan K. VO

IPC: E21B43/267 ,  C09K8/88 ,  C09K8/68 ,  C09K8/80

CPC classification number: E21B43/267 ,  C09K8/685 ,  C09K8/805 ,  C09K8/88 ,  C09K8/887

Abstract: Method comprising introducing a proppant-free fluid into a wellbore penetrating a subterranean formation to create or enhance one or more fractures; providing binding agent-coated proppant comprising proppant coated with a binding agent; and introducing, in alternating order, a proppant-laden fluid and a spacer fluid into one or more of the fractures. The proppant-laden fluid comprises a base fluid and binding agent-coated proppant, and the spacer fluid comprises a base fluid and degradable ultra-low density particulates. And forming a proppant pack in the fracture, wherein the proppant pack comprises binding agent-coated proppant and degradable ultra-low density particulates; producing hydrocarbons through the proppant pack; wherein the hydrocarbons degrade the degradable ultra-low density particulates to leave behind particulate-free channels.

公开(公告)号：US20190031945A1

公开(公告)日：2019-01-31

申请号：US15956617

申请日：2018-04-18

Applicant: PetroChina Company Limited

Inventor： Gang Guo ,  Zhongxing Li ,  Lijun Mu ,  Zhenfeng Zhao ,  Kuangsheng Zhang ,  Xiaojia Xue ,  Jiang Wu ,  Kai Li ,  Huabo Fan ,  Jin Liu ,  Xiaoqun Zhou ,  Cheng Xian

IPC: C09K8/584 ,  C09K8/60 ,  C09K8/36

CPC classification number: C09K8/584 ,  C09K8/36 ,  C09K8/604 ,  C09K8/68 ,  C09K8/88 ,  C09K2208/30

Abstract: A surfactant that changes the wettability of tight sandstone and its preparation method and application. By adding the aqueous phase solution into the oil phase solution, and under the action of the emulsifier, a uniformly dispersed phase is achieved. Then adding initiator, stirring and raising the temperature, reacting the reaction at the temperature to obtain a colorless and transparent liquid, i.e., high polymer. At room temperature, adding fluorocarbon surfactant and biosurfactant and stirring was continued for 4 hours to obtain a surfactant that changes the surface wettability of tight sandstone. The surfactant of the present invention can reduce the oil-water interfacial tension, transform the oil-wet surface into water-wet surface, which reduces the adhesion of oil droplets to rock surface and improves the flowability of crude oil in the original stratum, and improves the recovery of low-permeability reservoir.

公开(公告)号：US20180340116A1

公开(公告)日：2018-11-29

申请号：US15775009

申请日：2016-09-20

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Liqiang ZHAO ,  Yong YANG ,  Guangyan DU ,  Donghe YU ,  Juan DU ,  Hang CHE ,  Zhifeng LUO ,  Guohua LIU ,  Yuxin PEI ,  Nianyin LI ,  Pingli LIU ,  Kun XU

IPC: C09K8/64 ,  C09K8/80 ,  E21B43/26

CPC classification number: C09K8/64 ,  C09K8/68 ,  C09K8/80 ,  C09K8/88 ,  E21B43/26

Abstract: The present invention discloses a phase change fracturing fluid system for phase change fracturing, including the following components in percentage by weight: 10%-40% of supramolecular construction unit, 0-40% of supramolecular function unit, 0.5%-2% of surfactant, 0-5% of inorganic salt, 0.5%-2% of oxidizing agent, 0-2% of cosolvent and the remaining of solvent. The supramolecular construction unit is melamine, triallyl isocyanurate, or a mixture thereof. The supramolecular function unit is vinyl acetate, acrylonitrile, or a mixture thereof. The solvent is methylbenzene, ethylbenzene, o-xylene, m-xylene or p-xylene. In the fracturing construction process, a conventional fracturing fluid is used for fracturing a formation first; the phase change fracturing fluid is then injected into the formation, or the phase change fracturing fluid and other fluids which cannot be subjected to phase change are injected into the formation together.

公开(公告)号：US20180265773A1

公开(公告)日：2018-09-20

申请号：US15921179

申请日：2018-03-14

Applicant: TRICAN WELL SERVICE LTD

Inventor： Kewei ZHANG

IPC: C09K8/80 ,  C09K8/68 ,  C09K8/70

CPC classification number: C09K8/805 ,  C09K8/68 ,  C09K8/703 ,  C09K8/88 ,  C09K8/94 ,  E21B43/267

Abstract: An aqueous slurry composition for use in industries such as petroleum and pipeline industries, such as for use as a fracturing fluid. The aqueous slurry composition includes a particulate, an aqueous liquid and a chemical compound that renders the particulate surface hydrophobic. The slurry is produced by rendering the surface of the particulate hydrophobic during or prior to making the slurry.

公开(公告)号：US20180258344A1

公开(公告)日：2018-09-13

申请号：US15760214

申请日：2015-11-16

Applicant: Halliburton Energy Services, Inc.

Inventor： Jeremy A. HOLTSCLAW ,  Larry Steven EOFF ,  Nathan Carl SCHULTHEISS

IPC: C09K8/92 ,  C09K8/90 ,  C09K8/88 ,  E21B43/26

CPC classification number: C09K8/92 ,  C09K8/88 ,  C09K8/882 ,  C09K8/885 ,  C09K8/905 ,  E21B43/26

Abstract: Degradable particulates may allow for temporary redirection or occlusion of a fluid within a subterranean formation. However, many types of degradable particulates can be problematic for large-scale use, such as during subterranean treatment operations. Methods for treating a subterranean formation using degradable particulates may comprise: providing pre-coated particulates comprising a latently dissolvable core and a transient coating surrounding the latently dissolvable core, the latently dissolvable core and the transient coating comprising different materials; and introducing a treatment fluid comprising a carrier fluid and a plurality of the pre-coated particulates into a wellbore penetrating a subterranean formation in conjunction with a stimulation operation, a material comprising the latently dissolvable core being soluble in the carrier fluid or a formation fluid present within the subterranean formation.

公开(公告)号：US10059869B2

公开(公告)日：2018-08-28

申请号：US15035977

申请日：2014-02-20

Applicant: Halliburton Energy Services, Inc.

Inventor： Dipti Singh ,  Janette Cortez ,  James William Ogle

IPC: C09K8/12 ,  C09K8/68 ,  C09K8/88 ,  C09K8/90 ,  C04B28/02 ,  C04B28/14 ,  C09K8/10 ,  C09K8/52 ,  C09K8/72 ,  C09K8/528

CPC classification number: C09K8/12 ,  C04B28/02 ,  C04B28/14 ,  C09K8/10 ,  C09K8/52 ,  C09K8/528 ,  C09K8/68 ,  C09K8/685 ,  C09K8/725 ,  C09K8/88 ,  C09K8/882 ,  C09K8/887 ,  C09K8/90 ,  C09K2208/08 ,  C09K2208/24 ,  C09K2208/26 ,  C09K2208/32 ,  Y02W30/92 ,  Y02W30/94 ,  C04B7/02 ,  C04B7/32 ,  C04B14/047 ,  C04B14/06 ,  C04B14/10 ,  C04B14/106 ,  C04B14/108 ,  C04B18/08 ,  C04B18/082 ,  C04B18/141 ,  C04B20/0048 ,  C04B24/02 ,  C04B24/38 ,  C04B2103/0088 ,  C04B2103/22 ,  C04B2103/40 ,  C04B2103/408 ,  C04B2103/44 ,  C04B2103/46 ,  C04B2103/48 ,  C04B2103/54 ,  C04B2103/608 ,  C04B2103/61

Abstract: A method comprises obtaining or providing a treatment fluid comprising a viscosifier polymer; an aqueous carrier fluid comprising high total dissolved solids; and a polymer composition comprising at least one of polyvinyl alcohol and polylactic acid. In some embodiments, the treatment fluid has a viscosity at 140C and at a shear rate of about 0.1 s−1 to about 1 s−1 of about 1,500 cP to about 10,000 cP. The method includes placing the treatment fluid in a subterranean formation.

公开(公告)号：US20180202278A1

公开(公告)日：2018-07-19

申请号：US15919793

申请日：2018-03-13

Applicant: Baker Hughes, a GE company, LLC

Inventor： Scott G. Nelson ,  Harold Dean Brannon ,  Jimie DeVon Lemons ,  Thomas Ray Starks, II ,  D.V. Satyanarayana Gupta

IPC: E21B43/267 ,  E21B43/14 ,  C09K8/88 ,  C09K8/76 ,  C09K8/72 ,  C09K8/68 ,  C09K8/516 ,  E21B43/26 ,  E21B33/138 ,  C09K8/92 ,  C09K8/70 ,  C09K8/508

CPC classification number: E21B43/267 ,  C09K8/508 ,  C09K8/516 ,  C09K8/68 ,  C09K8/70 ,  C09K8/725 ,  C09K8/76 ,  C09K8/88 ,  C09K8/92 ,  C09K2208/18 ,  E21B33/138 ,  E21B43/14 ,  E21B43/261

Abstract: The flow of well treatment fluids may be diverted from a high permeability zone to a low permeability zone within a fracture network within a subterranean formation by use of a mixture comprising a dissolvable diverter and a proppant. At least a portion of the high permeability zone is propped open with the proppant of the mixture and at least a portion of the high permeability zone is blocked with the diverter. A fluid is then pumped into the subterranean formation and into a lower permeability zone of the formation farther from the wellbore. The diverter in the high permeability zones may then be dissolved at in-situ reservoir conditions and hydrocarbons produced from the high permeability propped zones of the fracture network. The mixture has particular applicability in the enhancement of production or hydrocarbons from high permeability zones in a fracture network located near the wellbore.