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公开(公告)号：US06306800B1
公开(公告)日：2001-10-23
申请号：US09166658
申请日：1998-10-05
IPC分类号： C09K704
CPC分类号： C09K8/68 , C09K8/74 , C09K2208/30 , Y10S507/922 , Y10S507/923 , Y10S507/933
摘要： The improved recovery of hydrocarbons from subterranean formations by fracturing and matrix acidizing a subterranean formation is accomplished. Well treatment fluids having a viscoelastic surfactant fluid containing worm like micelles are useful to improve recovery of hydrocarbons and limit the loss of fracturing fluid into the formation fracture face. The viscolastic surfactant-based fracturing fluids of the present Invention are stable across a wide pH spectrum, allowing them to be used for fracturing treatments at low pH, as well as matrix acidizing treatments. In addition, the stability of these fluids is enhanced in the presence of organic anions. Two-stage fracturing treatments comprised of a viscoelastic surfactant-based fracturing fluid and a polymer-based system, wherein the two fluids are either blended or pumped into the formation sequentially (the polymer last) are also presented.
摘要翻译： 通过压裂和基底酸化地下地层，从地下地层获得的烃的回收率得到改善。 具有含蠕虫状胶束的粘弹性表面活性剂流体的良好处理液可用于改善烃的回收并限制压裂流体进入地层断裂面的损失。 本发明的基于粘弹性表面活性剂的压裂液在宽pH范围内是稳定的，允许它们用于低pH下的压裂处理以及基质酸化处理。 此外，在有机阴离子存在下，这些流体的稳定性得到提高。 两阶段压裂处理由基于粘弹性表面活性剂的压裂液和基于聚合物的系统组成，其中两种流体相互混合或泵送到地层中（聚合物最后）。
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2.发明授权
公开(公告)号：US4344993A
公开(公告)日：1982-08-17
申请号：US182892
申请日：1980-09-02
CPC分类号： C08F2/004 , B05D5/083 , B05D7/227 , C09D133/26
摘要： Coatings having very low critical surface tensions comprise (1) a hydrophilic polymer such as polyacrylamide, (2) an ionic perfluorocarbon compound such as 3-[((heptadecafluorooctyl)sulfonyl)amino]-N,N,N-trimethyl-1-propanaminium iodide and (3) a cyclic sulfonium zwitterion cross-linking agent such as 2,2-bis(3-tetrahydrothiophenium-4-oxidophenyl)-propylidene. Such coatings are most advantageously employed as release coatings on internal surfaces of chemical reaction vessels in order to minimize the deposition (build-up) of undesirable materials on such internal surfaces.
摘要翻译： 具有非常低的临界表面张力的涂层包括（1）亲水性聚合物如聚丙烯酰胺，（2）离子全氟化碳化合物如3 - [（（十七氟辛基）磺酰基）氨基] -N，N，N-三甲基-1-丙胺 碘化物和（3）环状锍两性离子交联剂如2,2-双（3-四氢噻吩-4-氧基苯基） - 亚丙基。 这种涂层最有利地用作化学反应容器的内表面上的剥离涂层，以便最小化在这样的内表面上不期望的材料的沉积（堆积）。
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