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1. 发明授权

US07132389B2 Acid-coated sand for gravel pack and filter cake clean-up 有权
标题翻译：用于砾石包装和滤饼清理的酸性涂层砂
公开(公告)号：US07132389B2
公开(公告)日：2006-11-07
申请号：US10858610
申请日：2004-06-01
申请人： Li-Jein Lee
发明人： Li-Jein Lee
IPC分类号： E21B43/267 , C09K8/80
CPC分类号： C09K8/52 , C09K8/805 , E21B43/04 , Y10S507/901 , Y10S507/924
摘要： A method of the preparation and utilization of polymerized alpha-hydroxycarboxylic-acid-coated proppants for gravel pack and removal of filter cake that was deposited by reservoir drilling fluid. In a preferred example, polyglycolic-acid-coated sand is used to replace conventional gravel pack sand typically used for gravel packing. Under downhole conditions, the acidic by-product generated from the hydration of polyglycolic-acid-coated sand can break down acid-soluble and/or acid-breakable components embedded in the filter cake. This reaction enhances the filter cake removal and the flow of hydrocarbon from the producing formation. The polyglycolic-acid-coated sand may be produced by polymerizing a glycolic acid with a natural or synthetic proppant like 20–40 mesh commercial sand, at temperatures of about 210° F. or higher.
摘要翻译：制备和利用聚合的α-羟基羧酸涂覆的支撑剂用于砾石包装和去除由储层钻井液沉积的滤饼的方法。在优选的实施例中，使用聚乙醇酸涂覆的砂来代替通常用于砾石填充的常规砾石充填砂。在井下条件下，由聚乙醇酸涂覆的砂的水合产生的酸性副产物可以分解嵌入滤饼中的酸溶性和/或酸可破坏的组分。该反应增强了滤饼的去除以及来自生产地层的烃的流动。聚乙醇酸涂覆的砂可以通过在天然或合成的支撑剂如20-40目商业砂中，在约210°F或更高的温度下聚合乙醇酸来制备。

2. 发明申请

US20070054054A1 PROCESS FOR COATING GRAVEL PACK SAND WITH POLYMERIC BREAKER 有权
标题翻译：使用聚合物破碎机涂抹砂光盘砂的工艺
公开(公告)号：US20070054054A1
公开(公告)日：2007-03-08
申请号：US11424194
申请日：2006-06-14
申请人： Charles Svoboda , Hugh Caffery , Li-Jein Lee
发明人： Charles Svoboda , Hugh Caffery , Li-Jein Lee
IPC分类号： B05D3/02
CPC分类号： B01J2/006 , C09K8/805
摘要： A process for making a coated substrate that includes treating a proppant with a coating agent, wherein the coating agent comprises at least one of monomeric alpha-hydroxycarboxylic acids, alpha-hydroxycarboxylic acid polymers, and combinations thereof, reacting the treated proppant to form a polymer coated proppant, and recovering the polymer coated proppant is disclosed.
摘要翻译：一种制备涂覆基质的方法，其包括用涂料处理支撑剂，其中所述涂料包含单体α-羟基羧酸，α-羟基羧酸聚合物及其组合中的至少一种，使经处理的支撑剂反应形成聚合物披露了涂覆的支撑剂，并回收了聚合物涂覆的支撑剂。

3. 发明授权

US07972997B2 Process for coating gravel pack sand with polymeric breaker 有权
标题翻译：用聚合物破碎机涂覆砾石包砂的方法
公开(公告)号：US07972997B2
公开(公告)日：2011-07-05
申请号：US11424194
申请日：2006-06-14
申请人： Charles Svoboda , Hugh Caffery , Li-Jein Lee
发明人： Charles Svoboda , Hugh Caffery , Li-Jein Lee
IPC分类号： E21B43/267 , C09K8/80
CPC分类号： B01J2/006 , C09K8/805
摘要： A process for making a coated substrate that includes treating a proppant with a coating agent, wherein the coating agent comprises at least one of monomeric alpha-hydroxycarboxylic acids, alpha-hydroxycarboxylic acid polymers, and combinations thereof, reacting the treated proppant to form a polymer coated proppant, and recovering the polymer coated proppant is disclosed.
摘要翻译：一种制备涂覆基质的方法，其包括用涂料处理支撑剂，其中所述涂料包含单体α-羟基羧酸，α-羟基羧酸聚合物及其组合中的至少一种，使经处理的支撑剂反应形成聚合物披露了涂覆的支撑剂，并回收了聚合物涂覆的支撑剂。

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