Foaming agent for subterranean formations treatment, and methods of use thereof
    32.
    发明授权
    Foaming agent for subterranean formations treatment, and methods of use thereof 有权
    用于地下地层处理的发泡剂及其使用方法

    公开(公告)号:US07998909B2

    公开(公告)日:2011-08-16

    申请号:US11844093

    申请日:2007-08-23

    IPC分类号: C09K8/60

    摘要: A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula: [R—(OCH2CH2)m—Oq—YOn]pX wherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.

    摘要翻译: 井眼处理流体由水性介质,气体成分,增粘剂和表面活性剂形成。 表面活性剂由化学式表示:[R-(OCH 2 CH 2)m -Oq-YOn] pX其中R是直链烷基,支链烷基,烷基脂环族或烷基芳基; O是氧原子; Y是硫或磷原子; m为1以上; n为1〜3的整数; p是1至4的整数; q是0到1的整数; X是阳离子。 流体可以用于通过将流体引入井眼来处理穿透井眼的地下地层。 该流体可用于通过在等于或大于断裂起始压力的压力下将流体引入地层来压裂井眼穿透的地下岩层。

    Viscoelastic surfactant rheology modifier
    33.
    发明授权
    Viscoelastic surfactant rheology modifier 有权
    粘弹性表面活性剂流变改性剂

    公开(公告)号:US07897547B1

    公开(公告)日:2011-03-01

    申请号:US12643475

    申请日:2009-12-21

    申请人: Lijun Lin Leiming Li

    发明人: Lijun Lin Leiming Li

    IPC分类号: C09K8/584

    摘要: A method for shortening the shear recovery time of cationic, nonionic, anionic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of an amphiphilic polymeric rheology enhancer. The rheology enhancer is a grafted polymer of polydimethylsiloxane, for example polydimethylsiloxanes grafted with ethylene/propylene glycol. The rheology enhancer also increases fluid viscosity and very low rheology enhancer concentration is needed.

    摘要翻译: 一种通过加入有效量的两亲性聚合物流变增强剂来缩短阳离子,非离子,阴离子,两性离子和两性粘弹性表面活性剂流体体系的剪切恢复时间的方法。 流变增强剂是聚二甲基硅氧烷的接枝聚合物,例如用乙烯/丙二醇接枝的聚二甲基硅氧烷。 流变增强剂还增加了流体粘度,并且需要非常低的流变学增强剂浓度。

    Apparatus and Method of Searching Multi-Carrier Active Set Pilots
    34.
    发明申请
    Apparatus and Method of Searching Multi-Carrier Active Set Pilots 有权
    搜索多载波主动式飞行员的装置和方法

    公开(公告)号:US20110044294A1

    公开(公告)日:2011-02-24

    申请号:US12544334

    申请日:2009-08-20

    IPC分类号: H04B7/216

    CPC分类号: H04L27/2647 H04J11/0079

    摘要: Apparatus and methods are described herein for detecting pilot signals. An access terminal determines whether each pilot signal in its active set can be tracked. If not, the access terminal adjusts the search window center associated with any untracked pilot to a position that allows tracking In some aspects, a known search window center of a tracked member of a same pilot group may be used.

    摘要翻译: 这里描述了用于检测导频信号的装置和方法。 接入终端确定其活动组中的每个导频信号是否可被跟踪。 如果不是,则接入终端将与任何未跟踪的导频相关联的搜索窗口中心调整到允许跟踪的位置。在一些方面,可以使用相同导频组的被跟踪的成员的已知搜索窗口中心。

    Internal Breakers for Viscoelastic Surfactant Fluids
    36.
    发明申请
    Internal Breakers for Viscoelastic Surfactant Fluids 失效
    粘弹性表面活性剂流体的内部破碎机

    公开(公告)号:US20080269081A1

    公开(公告)日:2008-10-30

    申请号:US12122121

    申请日:2008-05-16

    IPC分类号: C09K8/68

    摘要: Internal breakers are given that break fluids viscosified with non-polymeric viscosifiers such as viscoelastic surfactants, inside formation pores. The breakers are polyols, for example natural and synthetic sugars, monoalcohols, and mixtures of the two. The sugars may be ketones and aldehydes. The sugars are also breaker aides for oxidizing agents used as breakers. Methods of using the breakers and breaker aides in oilfield treatment fluids are given.

    摘要翻译: 给出了内部断路器,使用非聚合增粘剂(如粘弹性表面活性剂,内部形成孔隙)粘稠的流体破裂。 断路器是多元醇,例如天然和合成的糖,一元醇和两者的混合物。 糖可以是酮和醛。 这些糖也是用作破碎剂的氧化剂的破碎剂助剂。 给出了在油田处理液中使用断路器和断路器助剂的方法。

    Energized Fluids and Methods of Use Thereof
    38.
    发明申请
    Energized Fluids and Methods of Use Thereof 有权
    通电流体及其使用方法

    公开(公告)号:US20080004187A1

    公开(公告)日:2008-01-03

    申请号:US11773021

    申请日:2007-09-17

    IPC分类号: C09K8/08

    摘要: The present invention relates to novel aqueous wellbore treatment fluids containing a gas component, a heteropolysaccharide, an electrolyte, and a surfactant, wherein the fluids may further include an organoamino compound. The fluids exhibit good theological properties at elevated temperatures. Methods of use of fluids comprising at least an aqueous medium, a gas component, a heteropolysaccharide and a surfactant for hydraulically fracturing, well cleanup and gravel packing operations, are also disclosed.

    摘要翻译: 本发明涉及含有气体组分,杂多糖,电解质和表面活性剂的新型含水井筒处理流体,其中流体可进一步包括有机氨基化合物。 流体在升高的温度下表现出良好的神学性质。 还公开了至少包含含水介质,气体组分,杂多糖和表面活性剂用于水力压裂,井清理和砾石包装操作的流体的使用方法。