可降解聚合物和（hé）一種溶劑使可降解顆粒開始形成

—種方法，其包括提供可降解聚合物和一種溶劑，其中溶劑包含選自以下組（zǔ）中的含水（shuǐ）流體淡水（shuǐ）、鹽水、鹵（lǔ）水、海水、及它（tā）們的組合。下（xià）麵詳細講（jiǎng）講（jiǎng）：

A method comprising providing a degradable polymer and a solvent, wherein the solvent comprises an aqueous fluid, fresh water, brine, sea water, and combinations thereof, selected from the following groups:. The following details:

將可降解聚合物和溶劑組合形成可降解聚合物組合物；使可降（jiàng）解聚合物少部分增塑；對可降解聚合物組合物施加足夠大的剪切，以使可降解（jiě）顆粒開始形成；將少部分的可降解顆粒加入礫石充填物組合物中；以及使可降解顆粒降解。

Combining a degradable polymer and a solvent to form a degradable polymer composition; Plasticizing the degradable polymer at least partially; Apply enough shear to the degradable polymer composition to start the formation of degradable particles; Adding at least part of the degradable particles into the gravel packing composition; And degrading the degradable particles.

其中可降解聚合物選自以下組中脂族聚酯、聚(丙交酯)、聚（jù）(乙交酯（zhǐ）)、聚（jù）(s-己內酯（zhǐ）)、聚(羥基酯醚)、聚(羥基丁酸酯)、聚(酸酐)、聚碳酸酯、聚(原酸酯)、聚(氨基酸)、聚(環氧（yǎng）乙（yǐ）烷)、聚(磷腈)、聚醚酯、聚酯酰胺、聚（jù）酰胺、及它們的共聚物、混合物或衍生物。

The degradable polymer is selected from the following groups: aliphatic polyester, poly (lactide), poly (glycolide), poly (s-caprolactone), poly (hydroxyester ether), poly (hydroxybutyrate), poly (anhydride), polycarbonate, poly (orthoester), poly (amino acid), poly (ethylene oxide), poly (phosphazene), polyether ester, polyester amide, polyamide, and their copolymers, mixtures or derivatives.

其（qí）中溶劑還（hái）包括以下（xià）少一種成分甲醇（chún）、乙醇（chún）、碳（tàn）酸亞丙（bǐng）酯、丙二醇、聚乙二醇、異丙醇、多元醇、甘油聚（jù）環氧乙烷、低聚乳酸、檸檬酸酯、檸檬酸三丁酯低聚物、檸檬酸三乙酯、檸檬酸（suān）乙酰基三丁酯（zhǐ）、檸檬酸乙（yǐ）酰基三乙酯、葡萄糖單酯、不（bú）完全脂肪酸酯、PEG單月桂（guì）酸酯、甘油三醋酸酯、聚(e-已內酰（xiān）胺)、聚(羥基丁酸酯)、甘油-l-苯甲酸（suān）酯-2，3-二月桂酸酯、甘油-2-苯甲酸酯-l,3-二月桂（guì）酸酯、雙(丁基二甘醇)己二酸酯、乙基鄰（lín）苯二甲酰乙（yǐ）基甘醇酸酯、甘油二乙酸單辛酸酯、二乙酰基單酰基甘（gān）油、聚丙二醇(及其環氧衍生物)、聚(丙二醇)二苯甲（jiǎ）酸酯、雙丙甘醇二苯甲酸酯、甘油、乙基鄰苯二（èr）甲酰乙基甘醇酸酯、聚(己二（èr）酸亞乙酯)二（èr）硬脂酸（suān）酯、已二酸二異丁酯，及它們的混合物或衍生物。

The solvent also includes at least one of the following components: methanol, ethanol, propylene carbonate, propylene glycol, polyethylene glycol, isopropanol, polyol, glycerol polyoxyethylene, oligolactic acid, citrate, tributyl citrate oligomer, triethyl citrate, acetyl tributyl citrate, acetyl triethyl citrate, glucose monoester, incomplete fatty acid ester, PEG monolaurate, glycerol triacetate Poly (e-caprolactam), poly (hydroxybutyrate), glycerine-l-benzoate-2,3-dilaurate, glycerine-2-benzoate-l,3-dilaurate, bis (butyl diglycol) adipate, ethyl phthaloyl ethyl glycolate, glycerol diacetate monooctanoate, diacetyl monoacylglycerol, polypropylene glycol (and its epoxy derivatives), poly (propylene glycol) dibenzoate, dipropylene glycol dibenzoate, glycerin Ethyl phthaloyl ethyl glycolate, poly (ethylidene adipate) distearate, diisobutyl adipate, and mixtures or derivatives thereof.

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