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1. 发明公开

EP3115544A4 DEGRADABLE RUBBER MEMBER FOR DOWNHOLE TOOL, DEGRADABLE SEAL MEMBER, DEGRADABLE PROTECTIVE MEMBER, DOWNHOLE TOOL, AND WELL-DRILLING METHOD 有权
标题翻译：可降解橡胶件FOR孔车刀，密封件可降解，可生物降解的保护元件，钻孔手段和工具
公开(公告)号：EP3115544A4
公开(公告)日：2017-04-05
申请号：EP15757709
申请日：2015-03-04
申请人： KUREHA CORP
发明人： TAKAHASHI TAKEO , OKURA MASAYUKI , KOBAYASHI TAKUMA
IPC分类号： E21B23/00 , C08K3/00 , C08K5/00 , C08K5/092 , C08K5/1575 , C08K5/42 , C08L75/04 , E21B33/12
CPC分类号： E21B29/02 , C08K3/012 , C08K5/0016 , C08K5/0033 , C08K5/092 , C08K5/1575 , C08K5/42 , C08L75/04 , C09K8/426 , E21B33/1208 , E21B33/134 , E21B43/26 , C08L21/00
摘要： A degradable rubber member for a downhole tool formed from a rubber material containing from 0.1 to 20 parts by mass of a degradation accelerator relative to 100 parts by mass of a degradable rubber (optionally containing other rubber materials and/or reinforcing materials), of which, preferably, the decrease rate of the mass or the 50% strain compressive stress after immersion for 24 hours in 150°C water is not less than 5%, and/or the mass loss rate after immersion for 72 hours in 150°C water is from 5 to 100%, and further, as desired, the tensile fracture strain at 66°C is not less than 50%, the 70% strain compressive stress is not less than 10 MPa, and the compressive fracture strain is not less than 50%; a degradable seal member or a protecting member for downhole tools comprising such a rubber member; and a downhole tool such as a plug for well drilling, and a method for well drilling.
摘要翻译：由可降解的橡胶的质量，相对于100份的降解促进剂的质量为0.1〜20份含橡胶材料形成用于井下工具可降解橡胶构件（任选地含有其他的橡胶材料和/或增强材料），其中，优选地，质量的减少率或浸渍后的50％应变的压缩应力在150℃的水中24小时不小于5％，和/或在150℃的水中浸渍后的质量损失率72小时为5〜100％，进一步，根据需要，在66℃下的拉伸断裂应变是不小于50％时，70％应变的压缩应力不小于10MPa，和压缩断裂应变不小于 50％; 可降解的密封构件或用于井下工具的包含这种橡胶构件的保护构件; 和一个井下工具：例如用于钻井的插头，和用于钻井的方法。

2. 发明公开

EP2014730A4 COATING LIQUID, GAS BARRIER FILM, GAS BARRIER LAMINATE AND GAS BARRIER MULTILAYER FILM EACH USING THE COATING LIQUID, AND THEIR PRODUCTION METHODS 有权转让
标题翻译： BESCHICHTUNGSFLÜSSIGKEIT，SIE JEWEILS ENTHALTENDER GASBARRIEREFILM，GASBARRIEREVERBUND UND GASBARRIEREMEHRSCHICHTFILM SOWIE DEREN HERSTELLUNGSVERFAHREN
公开(公告)号：EP2014730A4
公开(公告)日：2009-07-29
申请号：EP07741211
申请日：2007-04-06
申请人： KUREHA CORP
发明人： OKURA MASAYUKI , SEKIMORI YUKO , YAMAZAKI MASAHIRO
IPC分类号： C09D133/02 , B32B27/30 , B65D65/02 , C08J7/04 , C09D7/12 , C09D135/00
CPC分类号： C09D133/02 , B05D7/52 , C08J7/047 , C08J2400/105 , C08J2433/02 , C08K3/22 , C08K2201/008 , C09D7/61 , Y10T156/10 , Y10T428/31786 , Y10T428/31855 , Y10T428/31935
摘要： A coating solution comprising: a first solvent; 0.1 to 30 parts by weight of a polycarboxylic acid-based polymer relative to 100 parts by weight of the solvent; and 0.05 to 0.25 chemical equivalent of a zinc compound relative to an amount of carboxyl group in the polycarboxylic acid-based polymer, wherein a number average molecular weight of the polycarboxylic acid-based polymer is in a range of 40,000 to 10,000,000.
摘要翻译：本发明提供一种涂布液，其特征在于，含有第一溶剂，相对于100质量份溶剂为0.1〜30质量份聚羧酸聚合物，0.05〜0.25质量份化学当量的锌化合物多元羧酸聚合物。该涂布液的特征还在于，多元羧酸聚合物的数均分子量在40,000-10,000,000的范围内。

3. 发明公开

EP3088657A4 DOWNHOLE TOOL OR DOWNHOLE TOOL MEMBER, DEGRADABLE RESIN COMPOSITION, AND METHOD FOR RECOVERING HYDROCARBON RESOURCES 审中-公开
标题翻译：孔车刀或空穴模具件，生物降解性树脂和方法用于回收油气资源
公开(公告)号：EP3088657A4
公开(公告)日：2017-01-25
申请号：EP14873222
申请日：2014-12-22
申请人： KUREHA CORP
发明人： TAKAHASHI TAKEO , OKURA MASAYUKI , SAIJO HIKARU , WATANABE TAKAHIRO , SATO HIROYUKI
IPC分类号： E21B43/26 , C08G18/00 , E21B33/134
CPC分类号： E21B29/02 , C08G18/4283 , C08G18/7642 , C08G2230/00 , C08L67/04 , E21B33/12 , E21B33/13 , E21B33/134 , E21B43/26 , C08L75/04 , C08L67/025

4. 发明公开

EP2933086A4 POLYGLYCOLIC ACID SOLIDIFIED EXTRUSION AND METHOD FOR PRODUCING SAME 审中-公开
标题翻译： POLYGLYCOLSÄUREGESTÄRKTE挤压和方法及其生产
公开(公告)号：EP2933086A4
公开(公告)日：2016-07-13
申请号：EP13862516
申请日：2013-12-10
申请人： KUREHA CORP
发明人： OKURA MASAYUKI , SATO HIROYUKI
IPC分类号： B29C47/90 , B29K67/00
CPC分类号： B29C47/004 , B29C47/0004 , B29C47/0009 , B29K2023/0658 , B29K2035/00 , B29K2067/043 , B29L2031/26 , C08G63/06 , C08K3/0033 , C08K3/013 , C08K5/0008 , C08K5/0041 , E21B33/1208
摘要： Provided are: a polyglycolic acid (PGA) solidification- and extrusion-molded article that is formed from a resin material containing PGA, the PGA having a weight average molecular weight of 100,000 to 300,000 and a melt viscosity (temperature: 270°C; shearing speed: 120 sec -1 ) of 100 to 2,000 Pa·s, and that has a tensile strength at a temperature of 150°C of 20 to 200 MPa; a downhole tool or component thereof for drilling and completion of petroleum recovery formed by machining the solidification- and extrusion-molded article; an isolation plug provided with the component; an isolation plug mandrel; and a method for manufacturing the PGA solidification- and extrusion-molded article and a method for manufacturing the downhole tool or component thereof that comprise the steps of: supplying the resin material to an extruder (preferably from a fixed-quantity feeder); and after solidification- and extrusion-molding, pressurizing the solidification- and extrusion-molded article, and drawing the same while applying back pressure thereto in a direction of a forming die to suppress the expansion of the solidified and extruded matter.

5. 发明公开

EP2884041A4 BALL SEALER FOR HYDROCARBON RESOURCE COLLECTION AS WELL AS MANUFACTURING METHOD THEREFOR AND DOWN-HOLE TREATMENT METHOD USING SAME 有权
标题翻译：球座油气资源收集及其制造方法和良好治理的过程，
公开(公告)号：EP2884041A4
公开(公告)日：2016-04-06
申请号：EP13828146
申请日：2013-08-05
申请人： KUREHA CORP
发明人： OKURA MASAYUKI , SATO HIROYUKI
IPC分类号： E21B33/12 , B29C33/12 , B29C45/14 , B29L31/26 , B32B1/00 , B32B27/36 , C08J5/00 , E21B43/26
CPC分类号： E21B34/14 , B29C45/14073 , B29K2067/043 , B29K2105/12 , B29K2995/006 , B29L2009/00 , B29L2031/26 , B29L2031/7734 , B32B27/00 , E21B43/26 , E21B43/261 , Y10T428/31786
摘要： A ball sealer for hydrocarbon resource recovery, comprising: a generally spherical entire structure including at least two layers of a spherical core and a surface resin layer covering the spherical core, of which at least the surface resin layer comprises a polyglycolic acid resin; and having a diameter of at least about 25 mm (1 inch). The ball sealer is produced through a process comprising the steps of: disposing a spherical core by a support pin at a substantially central position within a mold cavity, injecting a surface resin comprising a polyglycolic acid resin into the cavity surrounding the spherical core, causing the support pin to retreat up to a wall surface of mold cavity in synchronism with a completion of the injection of the surface resin, and then hardening the surface resin. As a result, it is possible to produce a large-diameter ball sealer suitable for use in the hydraulic fracturing process (hydraulic fracturing) widely used for recovery of hydrocarbon resources by using a polyglycolic acid resin which is a biodegradable resin having good mechanical strengths and a good size designability at least as a surface-forming resin, through relatively simple steps and with good dimensional accuracy.
摘要翻译：甲密封球用于烃资源回收，包括：一个基因的反弹球形整个结构包括球形芯的至少两个层并覆盖所述球形芯，其中至少所述表面树脂层包括聚乙醇酸树脂的表面树脂层; 和直径为至少约25毫米（1英寸）。球密封件是通过包括以下步骤的方法生产：在模腔内的大致中央位置设置通过支撑销的球形芯，注射表面树脂包括聚乙醇酸树脂进入围绕球芯的空腔中，使所述支撑销撤退到模腔的壁面上同步于树脂表面的注入的完成，然后硬化该表面树脂。其结果是，有可能通过使用的聚乙醇酸树脂的所有它是具有良好的机械强度和生物降解性树脂，以产生适合于在水力压裂过程（水力压裂）广泛用于烃资源的回收中使用的大直径的密封球良好的尺寸设计能力至少作为表面形成性树脂，通过相对简单的步骤，并具有良好的尺寸精度。

6. 发明公开

EP2860344A4 MEMBER FOR HYDROCARBON RESOURCE COLLECTION DOWNHOLE TOOL 审中-公开
标题翻译：元用于空穴工具油气资源COLLECTION
公开(公告)号：EP2860344A4
公开(公告)日：2016-01-06
申请号：EP13801222
申请日：2013-04-12
申请人： KUREHA CORP
发明人： OKURA MASAYUKI , SAIJO HIKARU , YOSHIDA KATSUMI , SATO HIROYUKI
IPC分类号： E21B43/16 , E21B17/04
CPC分类号： E21B33/12 , E21B17/04 , E21B23/04 , E21B23/14 , E21B2023/008
摘要： A downhole tool member for hydrocarbon resource recovery, comprising a shaped body of a polyglycolic acid resin having a weight average molecular weight of at least 70,000, having an effective thickness which is 1/2 or more of a critical thickness of surface decomposition, and exhibiting a thickness reduction rate in water which is constant with respect to time. As a result, it has become possible to more accurately design the strength and time up to the collapse of the downhole tool member which forms the whole or a part of a downhole tool for developing or repairing downholes for recovery of hydrocarbon resources, such as oil and gas.

7. 发明公开

EP3006665A4 BORING PLUG PROVIDED WITH MANDREL FORMED FROM DEGRADABLE MATERIAL 有权
标题翻译： BOHRLOCHSTOPFEN MIT EINEM DORN AUS EINEM ABBAUBAREN材料
公开(公告)号：EP3006665A4
公开(公告)日：2017-01-25
申请号：EP14803796
申请日：2014-05-29
申请人： KUREHA CORP
发明人： OKURA MASAYUKI , TAKAHASHI TAKEO
IPC分类号： E21B43/16
CPC分类号： E21B33/12 , E21B33/1208 , E21B33/1291
摘要： A plug for well drilling process comprising: (a) a mandrel formed from a degradable material; (b) a pair of rings placed on an outer peripheral surface existing in the orthogonal to an axial direction of the mandrel, at least one of the rings being formed from a degradable material; and (c) at least one diameter-expandable circular rubber member placed at a position between the pair of rings on the outer peripheral surface existing in the orthogonal to the axial direction of the mandrel; the percentage of mass loss in the degradable material after immersion for 72 hours in water at a temperature of 150°C preferably being from 5 to 100%; and a well drilling method comprising the step of plugging well hole using the plug for well drilling process , wherein part or all of the plug for well drilling process degrades after the plugging.
摘要翻译：一种用于钻井工艺的塞子，包括：（a）由可降解材料形成的心轴; （b）一对环，其放置在与所述心轴的轴向正交的外周表面上，所述环中的至少一个由可降解材料形成; 和（c）至少一个直径可膨胀的圆形橡胶构件，其设置在与心轴的轴向正交的外周面上的一对环之间的位置; 在150℃的温度下浸渍72小时后的可降解材料的质量损失百分比优选为5〜100％以及一种钻井方法，包括使用用于钻井过程的塞子堵塞井眼的步骤，其中用于钻井过程的塞子的部分或全部在堵塞之后劣化。

8. 发明公开

EP3088658A4 BORING PLUG PROVIDED WITH DIAMETRICALLY EXPANDABLE ANNULAR RUBBER MEMBER FORMED FROM DEGRADABLE RUBBER MATERIAL 有权
标题翻译：带有可拆卸橡胶材料的钻孔插芯，带有直径可膨胀的带肋橡胶元件
公开(公告)号：EP3088658A4
公开(公告)日：2016-12-28
申请号：EP14875458
申请日：2014-12-22
申请人： KUREHA CORP
发明人： OKURA MASAYUKI , TAKAHASHI TAKEO
IPC分类号： E21B43/26 , C09K8/42 , E21B33/12
CPC分类号： C09K8/426 , E21B33/1208 , E21B33/128
摘要： A plug for well drilling includes a mandrel and at least one diametrically expandable annular rubber member and at least one slip disposed on an outer circumferential surface orthogonal to an axial direction of the mandrel; (i) the mandrel being formed from a degradable material; and (ii) the at least one diametrically expandable annular rubber member being formed from a degradable rubber material having a rate of decrease of not less than 5% in 50% strain compressive stress after immersion in water at a temperature of 150°C for 24 hours relative to the compressive stress before immersion; and/or having a rate of loss of mass of from 5 to 100% after immersion in water at a temperature of 150°C for 72 hours relative to the mass before immersion. A well drilling method includes a step of isolating a borehole using the plug for well drilling, part or all of the plug being degraded thereafter.

9. 发明公开

EP2014733A4 COATING LIQUID, GAS BARRIER FILM USING SAME, GAS BARRIER LAMINATE, GAS BARRIER MULTILAYER FILM, AND THEIR PRODUCTION METHODS 审中-公开
标题翻译：涂布液，你每片含阻气膜，阻气复合性和气体阻隔多层膜及其制造方法
公开(公告)号：EP2014733A4
公开(公告)日：2011-08-03
申请号：EP07741213
申请日：2007-04-06
申请人： KUREHA CORP
发明人： OKURA MASAYUKI , SEKIMORI YUKO , YAMAZAKI MASAHIRO
IPC分类号： C09D201/08 , B32B27/30 , C08J7/04 , C09D5/00
CPC分类号： C08J7/047 , B05D7/52 , C08J2400/105 , C08J2433/02 , C08K3/22 , C08K2201/008 , C09D7/61 , Y10T428/31855
摘要： A coating solution comprising: a first solvent; 0.1 to 30 parts by weight of a polycarboxylic acid-based polymer relative to 100 parts by weight of the solvent; 0.01 to 0.35 chemical equivalent of an alkali metal compound relative to an amount of carboxyl group in the polycarboxylic acid-based polymer; and 0.05 to 0.75 chemical equivalent of a multivalent metal compound relative to the amount of the carboxyl group, wherein a number average molecular weight of the polycarboxylic acid-based polymer is in a range of 40, 000 to 10,000,000.

10. 发明公开

EP1829902A4 AQUEOUS POLYMERIZABLE MONOMER COMPOSITION, GAS-BARRIER FILM, AND METHOD FOR PRODUCING SUCH FILM 有权转让
标题翻译：聚合单体含水性成分，气体阻隔性膜及其制造方法
公开(公告)号：EP1829902A4
公开(公告)日：2008-05-14
申请号：EP05814368
申请日：2005-11-30
申请人： KUREHA CORP
发明人： KAWASHIMA MOTOTAKA , INABA YUSAKA , OKURA MASAYUKI
IPC分类号： C08F120/06 , B05D7/24 , B32B27/30 , C08F122/02 , C08J7/18 , C08L101/00 , C09D4/02 , C09D133/02
CPC分类号： B32B27/30 , B05D3/0254 , B05D3/067 , B05D3/068 , B05D7/04 , B32B15/08 , B32B27/08 , B32B27/10 , B32B27/26 , B32B27/28 , B32B27/308 , B32B2255/10 , B32B2255/12 , B32B2255/26 , B32B2307/7242 , B32B2307/7244 , B32B2439/40 , B32B2439/70 , B32B2439/80 , C08F220/06 , C08J7/047 , C08J7/18 , C08J2433/00 , C08L33/02 , C08L2312/00 , C09D4/00

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