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公开(公告)号：EP2850148B1
公开(公告)日：2018-05-30
申请号：EP13725255.7
申请日：2013-05-16
CPC分类号： C09K8/12 , C09K8/68 , C09K2208/12
摘要： Methods of stabilizing water-sensitive clays in subterranean formations may include introducing a drill-in treatment fluid into at least a portion of a subterranean formation comprising water-sensitive minerals, where providing the drill-in treatment fluid comprises an aqueous-based fluid and a hydrophobically-modified cationic polymer; and allowing the hydrophobically-modified cationic polymer to at least partially coat the water-sensitive mineral.
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2.发明公开
公开(公告)号：EP1838804A1
公开(公告)日：2007-10-03
申请号：EP05794697.2
申请日：2005-10-19
CPC分类号： C09K8/5083 , C09K8/518 , C09K8/5753 , C09K8/62 , C09K8/68
摘要： Method of treating a portion of a subterranean formation comprising: placing a prepad fluid into a portion of a subterranean formation wherein the pre-pad fluid comprises a low-viscosity aqueous tackifying composition that comprises an aqueous tackifier compound and an aqueous fluid; placing a fracturing fluid into the portion of the subterranean formation at a pressure sufficient to create or extend at least one fracture therein; and, activating the aqueous tackifier compound with an activator so as to consolidate the unconsolidated particulates. Method of consolidating unconsolidated particulates within a portion of a subterranean formation comprising: placing a foamed low-viscosity aqueous tackifying composition into a portion of a subterranean formation comprising unconsolidated particulates wherein the aqueous tackifying composition comprises an aqueous fluid, a foaming agent, and an aqueous tackifier compound; and, activating the aqueous tackifier compound with an activator so as to consolidate the unconsolidated particulates.
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3.发明公开
公开(公告)号：EP1664485A1
公开(公告)日：2006-06-07
申请号：EP04743310.7
申请日：2004-07-07
IPC分类号： E21B43/267
CPC分类号： C09K8/805 , Y10S507/924 , Y10T428/2998 , Y10T428/3188
摘要： The present invention involves enhancing the conductivity of subterranean propped fractures penetrating formations while controlling proppant flowback. More particularly, the present invention relates to improved consolidation performance of resin-coated proppants and their use in controlling proppant flowback. Some embodiments of the present invention provide methods of controlling proppant flowback from a fracture in a subterranean zone comprising the steps of providing resin coated proppant; providing tackifying composition; coating the tackifying composition onto at least a portion of the resin coated proppant to create tackyfied resin coated proppant; introducing the tackyfied resin coated proppant into a subterranean fracture; and, allowing the tackyfied resin coated proppant to substantially cure.
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公开(公告)号：EP1517973B1
公开(公告)日：2005-11-30
申请号：EP03732722.8
申请日：2003-06-18
IPC分类号： C09K7/02
CPC分类号： C09K8/10 , C09K8/08 , C09K8/12 , C09K8/206 , C09K8/24 , Y10S507/902 , Y10S507/903
摘要： A method is disclosed for drilling a wellbore employing a drilling fluid providing the advantages of easy pumpability of a low viscosity fluid with the drill cuttings suspension capability of a highly viscous fluid. The viscosity of the fluid is also easily and quickly adjustable so that the fluid rheology may be adapted during drilling as the subterranean conditions change. These advantages are obtained by including in said fluid a reversibly crosslinkable polymer and an encapsulated crosslink activator. The crosslink activator causes crosslinking after the fluid is in the wellbore. The crosslinking is reversed at the well surface to reduce the viscosity of the fluid to enable the drill cuttings to be easily removed. Crosslink activator is added back to the fluid and the fluid is returned to the borehole. The amount of crosslink activator and/or crosslinkable polymer may be adjusted in the fluid to change the fluid rheology to conform the fluid to changes in the well conditions as monitored real time.
摘要翻译： 公开了一种使用钻井液钻井的方法，该方法提供了低粘度流体的易泵送性和高粘度流体的钻屑悬浮能力的优点。 流体的粘度也容易且快速地调节，以便在地下条件改变时可以在钻井期间调整流体流变学。 这些优点是通过在所述流体中包含可逆交联聚合物和包封交联活化剂而获得的。 交联活化剂在流体进入井筒后引起交联。 在井表面逆转交联以降低流体的粘度，以使钻屑能够容易地移除。 交联活化剂被加回到流体中，并且流体返回到井眼。 可以在流体中调节交联活化剂和/或可交联聚合物的量以改变流体流变学，以使流体适应实时监测的井况中的变化。
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公开(公告)号：EP2820103B1
公开(公告)日：2016-11-16
申请号：EP13726074.1
申请日：2013-05-17
CPC分类号： C09K8/68 , C09K8/805 , C09K2208/08
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6.发明公开FORMATION CONDITIONING FLUIDS COMPRISING PEROXIDES AND METHODS RELATING THERETO 审中-公开液体的过氧化物和相关手续的形成建筑
公开(公告)号：EP2513421A1
公开(公告)日：2012-10-24
申请号：EP11725603.2
申请日：2011-01-18
IPC分类号： E21B43/26
摘要： Of the methods provided herein, is a method comprising: providing a clean-up fluid comprising a peroxide-generating compound and an aqueous base fluid; placing the clean-up fluid in a subterranean formation; removing contaminants from at least a portion of the subterranean formation to form a cleaned portion of the formation; providing a consolidation agent; placing the consolidation agent on at least a portion of the cleaned portion of the formation; and allowing the consolidation agent to adhere to at least a plurality of unconsolidated particulates in the cleaned portion of the formation.
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公开(公告)号：EP1556581A1
公开(公告)日：2005-07-27
申请号：EP03753811.3
申请日：2003-10-16
发明人： NGUYEN, Philip, D.
IPC分类号： E21B43/02 , E21B43/26 , E21B43/267
CPC分类号： C09K8/805 , C09K8/68 , C09K2208/26 , E21B43/025 , E21B43/261
摘要： Methods of completing unconsolidated hydrocarbon producing zones penetrated by cased and cemented well bores are provided. The methods include the steps of forming spaced openings through the casing and cement and injecting a first hardenable resin composition through the openings into the unconsolidated producing zone adjacent to the well bore. Without waiting for the first hardenable resin composition to harden, a fracturing fluid containing proppant particles coated with a second hardenable resin composition is injected through the openings into the unconsolidated producing zone at a rate and pressure sufficient to fracture the producing zone. The proppant particles coated with the second hardenable resin composition are deposited in the fractures and the first and second hardenable resin compositions are allowed to harden by heat.
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公开(公告)号：EP2959092A1
公开(公告)日：2015-12-30
申请号：EP14754602.2
申请日：2014-02-12
发明人： NGUYEN, Philip, D.
摘要： The present invention relates to methods of drilling a wellbore wherein a drill-in fluid is foamed at the drill tool. A method in accordance with the present invention comprises providing a drill-in fluid comprising an aqueous fluid, a foaming agent, a foam stabilizer, a gas generating chemical and an encapsulated activator; introducing the drill-in fluid downhole into a drill string connected to a drill tool; and allowing the drill-in fluid to exit the drill tool where, upon exiting the drill tool, the encapsulated activator is de- capsulated sufficiently to react with the gas generating chemical such that a gas is generated within the drill-in fluid and thus foams the drill-in fluid.
摘要翻译： 本发明涉及钻井的方法，其中钻井液在钻井工具处发泡。 根据本发明的方法包括提供包含含水流体，发泡剂，泡沫稳定剂，产生气体的化学品和封装的活化剂的钻入流体; 将钻入流体引入井下连接到与钻具连接的钻柱中; 并且允许钻入流体离开钻具，其中在离开钻具时，封装的激活器被充分释放以与气体生成化学物质反应，使得在钻入流体内产生气体并因此产生泡沫 钻入流体。
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公开(公告)号：EP2850148A1
公开(公告)日：2015-03-25
申请号：EP13725255.7
申请日：2013-05-16
CPC分类号： C09K8/12 , C09K8/68 , C09K2208/12
摘要： Methods of stabilizing water-sensitive clays in subterranean formations may include introducing a drill-in treatment fluid into at least a portion of a subterranean formation comprising water-sensitive minerals, where providing the drill-in treatment fluid comprises an aqueous-based fluid and a hydrophobically-modified cationic polymer; and allowing the hydrophobically-modified cationic polymer to at least partially coat the water-sensitive mineral.
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10.发明授权
公开(公告)号：EP1931745B1
公开(公告)日：2011-01-12
申请号：EP06794679.8
申请日：2006-10-06
发明人： NGUYEN, Philip, D. , WEAVER, Jimmie, D. , BOWLES, Bobby , SLABAUGH, Billy, F. , PARKER, Mark, A.
摘要： Methods of improving load recovery using hydrophobic coatings to enhance the recovery of treatment fluids from subterranean formations may include the use of hydrophobic coating agents. In particular, such methods may include the steps of coating a plurality of particulates so as to form a plurality of hydrophobically-coated particulates. The presence of these hydrophobically-coated particulates downhole may enhance the recovery of aqueous treatment fluids.
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