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公开(公告)号：US07341980B2
公开(公告)日：2008-03-11
申请号：US10994664
申请日：2004-11-22
申请人： Jesse Lee , Yiyan Chen , Timothy Pope , Eric Hanson , Samuel Cozzens , Taner Batmaz
发明人： Jesse Lee , Yiyan Chen , Timothy Pope , Eric Hanson , Samuel Cozzens , Taner Batmaz
CPC分类号： C09K8/68 , C09K8/602 , C09K2208/30
摘要： A method for shortening the shear recovery time of zwitterionic viscoelastic surfactant fluids by adding a rheology enhancer having the structure: R-(EO)x(PO)y—R′—OH in which R is an alkyl group that is straight chained or branched, saturated or unsaturated, and contains from 3 to about 18 carbon atoms, x is from 0 to about 14, y is from 0 to about 7, R′ is an alkyl group that contains from 0 to about 14 carbon atoms and is straight chained, branched if having more than 3 carbon atoms, saturated, unsaturated if having more than one carbon atom, the total number of carbon atoms in R plus R′ is from 3 to about 21, and the EO and PO groups, if present, may be in any order. The rheology enhancer also increases fluid viscosity and thermal stability. Preferred surfactants are betaines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.
摘要翻译： 通过添加具有以下结构的流变增强剂来缩短两性离子粘弹性表面活性剂流体的剪切恢复时间的方法：<？in-line-formula description =“In-line Formulas”end =“lead”→> R-（EO） （PO）y-R'-OH <βin-line-formula description =“In-line Formulas”end =“tail”？>其中R是 直链或支链，饱和或不饱和的烷基，含有3至约18个碳原子，x为0至约14，y为0至约7，R'为含0至 约14个碳原子，如果具有多于3个碳原子，则是直链，支链的，如果具有多于一个碳原子是饱和的，不饱和的，R + R'中的总碳原子数为3至约21，EO 和PO组（如果存在）可以是任何顺序。 流变增强剂还增加流体粘度和热稳定性。 优选的表面活性剂是甜菜碱。 这些流体可用于油田处理，例如压裂和砾石填充。
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公开(公告)号：US20060111248A1
公开(公告)日：2006-05-25
申请号：US10994664
申请日：2004-11-22
申请人： Jesse Lee , Yiyan Chen , Timothy Pope , Eric Hanson , Samuel Cozzens , Taner Batmaz
发明人： Jesse Lee , Yiyan Chen , Timothy Pope , Eric Hanson , Samuel Cozzens , Taner Batmaz
CPC分类号： C09K8/68 , C09K8/602 , C09K2208/30
摘要： A method for shortening the shear recovery time of zwitterionic viscoelastic surfactant fluids by adding a rheology enhancer having the structure: R-(EO)x(PO)y—R′—OH in which R is an alkyl group that is straight chained or branched, saturated or unsaturated, and contains from 3 to about 18 carbon atoms, x is from 0 to about 14, y is from 0 to about 7, R′ is an alkyl group that contains from 0 to about 14 carbon atoms and is straight chained, branched if having more than 3 carbon atoms, saturated, unsaturated if having more than one carbon atom, the total number of carbon atoms in R plus R′ is from 3 to about 21, and the EO and PO groups, if present, may be in any order. The rheology enhancer also increases fluid viscosity and thermal stability. Preferred surfactants are betaines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.
摘要翻译： 通过添加具有以下结构的流变增强剂来缩短两性离子粘弹性表面活性剂流体的剪切恢复时间的方法：<？in-line-formula description =“In-line Formulas”end =“lead”→> R-（EO） （PO）y-R'-OH <βin-line-formula description =“In-line Formulas”end =“tail”？>其中R是 直链或支链，饱和或不饱和的烷基，含有3至约18个碳原子，x为0至约14，y为0至约7，R'为含0至 约14个碳原子，如果具有多于3个碳原子，则是直链，支链的，如果具有多于一个碳原子是饱和的，不饱和的，R + R'中的总碳原子数为3至约21，EO 和PO组（如果存在）可以是任何顺序。 流变增强剂还增加流体粘度和热稳定性。 优选的表面活性剂是甜菜碱。 这些流体可用于油田处理，例如压裂和砾石填充。
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