公开(公告)号：US20190276568A1

公开(公告)日：2019-09-12

申请号：US16344381

申请日：2017-10-24

Applicant: BASF SE

Inventor： Ferdinand Leifeld ,  Achim FESSENBECKER ,  Steffen HENKES ,  Massimiliano BORDIGNON ,  Vandana KURKAL-SIEBERT ,  Laszlo SZARVAS ,  Qing Feng TONG

IPC: C08F120/06 ,  C08F2/20 ,  C08F8/44 ,  C08F2/38 ,  C08K3/22 ,  C08K3/26 ,  C08K3/32

Abstract: An acrylic acid polymer having a weight average molecular weight Mw in the range from 3500 to 2000 g/mol and a polydispersity index Mw/Mn≤2.5, wherein 30% to 60% of the acid groups of the acrylic acid polymers have been neutralized with calcium ions, 30% to 70% of the acrylic acid polymers have been neutralized with sodium ions and 0% to 10% of the acid groups of the acrylic acid polymers have not been neutralized.

公开(公告)号：US20150354332A1

公开(公告)日：2015-12-10

申请号：US14764425

申请日：2014-01-24

Applicant: BASF SE

Inventor： Vandana KURKAL-SIEBERT ,  Guenter OETTER ,  Nicole LICHTERFELD-WEBER

IPC: E21B43/16 ,  E21B43/26 ,  C09K8/74 ,  C09K8/68 ,  C09K8/584 ,  E21B43/40 ,  E21B37/06

CPC classification number: E21B43/16 ,  C09K8/584 ,  C09K8/602 ,  C09K8/68 ,  C09K8/74 ,  C09K8/86 ,  E21B37/06 ,  E21B43/26 ,  E21B43/40

Abstract: Process for treating subterranean oil-bearing formations comprising carbonate rocks with an aqueous composition comprising cationic ammonium salts comprising four hydrocarbon radicals wherein at least one of the hydrocarbon radicals is substituted by an OH-group. The process may be a process for enhanced oil recovery, fracturing, acidizing or antiscale treatment.

Abstract translation: 用包含碳酸盐岩的含地层含油地层的方法，所述地层含油地层含有包含四个烃基的阳离子铵盐的水性组合物，其中至少一个烃基被OH-基团取代。 该方法可以是用于增强采油，压裂，酸化或防垢处理的方法。

公开(公告)号：US20150353815A1

公开(公告)日：2015-12-10

申请号：US14760725

申请日：2014-01-03

Applicant: BASF CORPORATION ,  BASF SE

Inventor： Vandana KURKAL-SIEBERT ,  Jack TINSLEY ,  Tanhee GALINDO ,  Rimassa SHAWN

IPC: C09K8/68 ,  E21B43/26 ,  E21B43/267 ,  C09K8/80

CPC classification number: C09K8/68 ,  C09K8/80 ,  C09K8/86 ,  E21B43/26 ,  E21B43/267

Abstract: Method of fracturing subterranean formations using aqueous compositions comprising at least an aqueous base fluid, proppants, a viscosifier, at least one flowback aid and removing at least a portion of the aqueous fracturing fluid from the formation after fracturing. The flowback aid is selected from the group of alkyl or alkenyl polyglucosides, carboxylated alkyl or alkenyl polyglucosides and alkoxylated branched alcohols.

Abstract translation: 使用包含至少含水基础流体，支撑剂，增粘剂，至少一个回流辅助剂的水性组合物并在压裂后从地层中去除至少一部分水性压裂液的方法。 反流助剂选自烷基或链烯基多葡糖苷，羧基化烷基或链烯基多葡糖苷和烷氧基化支链醇。