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1. WO2020138252 - DIVERTING AGENT AND METHOD FOR OCCLUDING CRACKS ON WELL USING SAME

Publication Number WO/2020/138252
Publication Date 02.07.2020
International Application No. PCT/JP2019/051043
International Filing Date 25.12.2019
IPC
C08F 16/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
16Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical
02by an alcohol radical
04Acyclic compounds
06Polyvinyl alcohol
C09K 8/508 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
50Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
504Compositions based on water or polar solvents
506containing organic compounds
508macromolecular compounds
E21B 43/26 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
25Methods for stimulating production
26by forming crevices or fractures
CPC
C08F 16/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
16Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
02by an alcohol radical
04Acyclic compounds
06Polyvinyl alcohol ; ; Vinyl alcohol
C09K 8/508
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
50Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
504Compositions based on water or polar solvents
506containing organic compounds
508macromolecular compounds
E21B 43/26
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
25Methods for stimulating production
26by forming crevices or fractures
Applicants
  • 三菱ケミカル株式会社 MITSUBISHI CHEMICAL CORPORATION [JP]/[JP]
Inventors
  • 平野 泰広 HIRANO Yasuhiro
  • 坂 隆裕 SAKA Takahiro
  • 谷口 亮輔 TANIGUCHI Ryosuke
  • 風呂 千津子 FURO Chizuko
Agents
  • 特許業務法人栄光特許事務所 EIKOH PATENT FIRM, P.C.
Priority Data
2018-24509627.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DIVERTING AGENT AND METHOD FOR OCCLUDING CRACKS ON WELL USING SAME
(FR) AGENT DE DÉVIATION, ET PROCÉDÉ DE COLMATAGE DE FISSURE DE PUITS METTANT EN ŒUVRE CELUI-CI
(JA) ダイバーティングエージェント及びこれを用いた坑井の亀裂の閉塞方法
Abstract
(EN)
The purpose of the present invention is to provide a diverting agent that can exert satisfactory performance of occluding cracks on a well in an excavation method using hydraulic fracturing and, moreover, shows a high solubility after the lapse of a specified time. The diverting agent according to the present invention comprises a polyvinyl alcohol resin having an average polymerization degree of 1000 or greater.
(FR)
L'invention a pour objet de fournir un agent de déviation qui permet de développer des propriétés de colmatage suffisantes vis-à-vis d'une fissure de puits, dans le cadre d'un processus de forage mettant en œuvre une fracturation hydraulique, et qui se révèle excellent en termes de dissolution après écoulement d'une durée prédéfinie. L'agent de déviation de l'invention comprend une résine à base d'alcool polyvinylique de degré de polymérisation moyen supérieur ou égal à 10000.
(JA)
本発明は、水圧破砕法を用いる掘削工法において、坑井の亀裂に対して十分な閉塞性を発揮することができ、さらに、所定期間経過後の溶解性に優れるダイバーティングエージェントを提供することを目的とする。本発明のダイバーティングエージェントは、平均重合度が1000以上であるポリビニルアルコール系樹脂を含有する。
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