DELAYED BREAKER
    2.
    发明申请
    DELAYED BREAKER 有权
    延迟断路器

    公开(公告)号:US20100270017A1

    公开(公告)日:2010-10-28

    申请号:US12670784

    申请日:2008-07-31

    IPC分类号: E21B43/27 C09K8/588

    CPC分类号: C09K8/74 C09K2208/26

    摘要: A process that includes pumping a first wellbore fluid comprising an oxidative degradable polymer into a wellbore through a subterranean formation; pumping a second wellbore fluid comprising a pH-activated oxidative breaker into the wellbore; pumping a third wellbore fluid comprising a delayed acid source into the wellbore; and allowing the delayed acid source to acidify at least a portion of the wellbore to a pH of less than 7 so as to activate the pH-activated oxidative breaker at the lower pH and degrade the oxidative degradable polymers is disclosed.

    摘要翻译: 一种方法,其包括将包含氧化性可降解聚合物的第一井筒流体通过地下地层泵入井眼; 将包含pH激活的氧化断裂器的第二井筒流体泵入井眼; 将包含延迟酸源的第三井筒流体泵送到井筒中; 并且允许延迟的酸源将至少一部分井眼酸化至小于7的pH,以便在较低pH下活化pH活化的氧化性破乳剂并降解氧化降解聚合物。

    Delayed breaker
    3.
    发明授权
    Delayed breaker 有权
    延时断路器

    公开(公告)号:US08387696B2

    公开(公告)日:2013-03-05

    申请号:US12670784

    申请日:2008-07-31

    IPC分类号: E21B43/22

    CPC分类号: C09K8/74 C09K2208/26

    摘要: A process that includes pumping a first wellbore fluid comprising an oxidative degradable polymer into a wellbore through a subterranean formation; pumping a second wellbore fluid comprising a pH-activated oxidative breaker into the wellbore; pumping a third wellbore fluid comprising a delayed acid source into the wellbore; and allowing the delayed acid source to acidify at least a portion of the wellbore to a pH of less than 7 so as to activate the pH-activated oxidative breaker at the lower pH and degrade the oxidative degradable polymers is disclosed.

    摘要翻译: 一种方法,其包括将包含氧化性可降解聚合物的第一井筒流体通过地下地层泵入井眼; 将包含pH激活的氧化断裂器的第二井筒流体泵入井眼; 将包含延迟酸源的第三井筒流体泵送到井筒中; 并且允许延迟的酸源将至少一部分井眼酸化至小于7的pH,以便在较低pH下活化pH活化的氧化性破乳剂并降解氧化降解聚合物。

    Delayed phase changing agent for invert emulsion drilling fluid
    7.
    发明授权
    Delayed phase changing agent for invert emulsion drilling fluid 有权
    反相乳液钻井液延时相变剂

    公开(公告)号:US07152697B2

    公开(公告)日:2006-12-26

    申请号:US10772550

    申请日:2004-02-03

    IPC分类号: E21B21/00 E21B37/00 C09K7/02

    CPC分类号: C09K8/36 C09K8/28 Y10S507/929

    摘要: A method of controlling and delaying the inversion of a drilling fluid and the wettability of a filtercake by using a delayed phase changing agent. The filtercake is preferably formed while drilling a subterranean formation using a drilling fluid includes: an oleaginous fluid; a non-oleaginous fluid; an amine surfactant having the structure: wherein R is a C12–C22 aliphatic hydrocarbon; R′ is an independently selectable from hydrogen or C1 to C3 alkyl; A is NH or O, and 1≦x+y≦3. In the method, the filter cake is exposed to a delayed phase changing agent selected from the group consisting of aliphatic amine acids, salts of aliphatic amine acids and combinations thereof. In one preferred illustrative embodiment, the delayed phase changing agent is delivered in the form of a pill, the pill including a carrier fluid, a viscosifier and the delayed phase changing agent. The delayed phase changing agent may be selected from ethylene diamine tetraacetic acid, alkali metal salts of ethylene diamine tetraacetic acid and combinations of these and similar compounds.

    摘要翻译: 通过使用延迟相变剂控制和延迟钻井液的倒置和滤饼的润湿性的方法。 滤饼优选地在使用钻井液钻地层时形成,包括:含油液体; 非油质流体; 具有以下结构的胺表面活性剂:其中R是C 12 -C 22脂族烃; R'可独立地选自氢或C 1至C 3烷基; A是NH或O,1 <= x + y <= 3。 在该方法中,将滤饼暴露于选自脂肪族胺酸,脂肪族胺酸盐及其组合的延迟相变剂。 在一个优选的说明性实施方案中,延迟相变剂以丸剂的形式递送,丸剂包括载体流体,增粘剂和延迟相变剂。 延迟相变剂可以选自乙二胺四乙酸,乙二胺四乙酸的碱金属盐,以及这些和类似化合物的组合。

    WATER BASED COMPLETION AND DISPLACEMENT FLUID AND METHOD OF USE
    9.
    发明申请
    WATER BASED COMPLETION AND DISPLACEMENT FLUID AND METHOD OF USE 有权
    基于水的完成和位移流体及其使用方法

    公开(公告)号:US20120103617A1

    公开(公告)日:2012-05-03

    申请号:US13335251

    申请日:2011-12-22

    IPC分类号: E21B37/08 E21B43/00 C09K8/52

    CPC分类号: C09K8/52 C09K8/32 E21B37/00

    摘要: A method of cleaning a wellbore prior to the production of oil or gas is disclosed, wherein the wellbore has been drilled with an invert emulsion drilling mud that forms an invert emulsion filter cake. The method may include the steps of circulating a breaker fluid into the wellbore, where the breaker fluid includes an aqueous fluid, a water soluble polar organic solvent, a hydrolysable ester of a carboxylic acid, and a weighting age, and where the hydrolysable ester is selected so that upon hydrolysis an organic acid is released and the invert emulsion of the filter cake breaks.

    摘要翻译: 公开了在生产油或气体之前清洁井眼的方法,其中已经用形成反转乳液滤饼的反转乳液钻井泥浆钻了井筒。 该方法可以包括以下步骤:将破坏剂流体循环到井筒中,其中破碎剂流体包括水性流体,水溶性极性有机溶剂,羧酸的可水解酯和加权酸,并且其中可水解酯是 选择使得在水解时释放有机酸,并且滤饼的反转乳液破裂。

    Breaker and displacement fluid and method of use
    10.
    发明授权
    Breaker and displacement fluid and method of use 有权
    断路器和排量流体及其使用方法

    公开(公告)号:US08932999B2

    公开(公告)日:2015-01-13

    申请号:US12032879

    申请日:2008-02-18

    摘要: A method of cleaning a wellbore prior to the production of oil or gas is disclosed, wherein the wellbore has been drilled with an invert emulsion drilling mud that forms an invert emulsion filter cake. The method may include the steps of circulating a breaker fluid into the wellbore, where the breaker fluid includes an aqueous fluid, and imino diacetic acid or salt thereof. Optionally an acid buffering agent, and a weighting age are also included. The breaker fluid is formulated such that after a predetermined period of time and the filter cake present in the wellbore or on the wellbore face is substantially degraded. Other methods may also include drilling the wellbore with a water-based drilling mud that forms a water-based filter cake, wherein the method may include the steps of circulating a breaker fluid into the wellbore, where the breaker fluid may include an aqueous fluid, and an iminodiacetic acid or a salt thereof.

    摘要翻译: 公开了在生产油或气体之前清洁井眼的方法,其中已经用形成反转乳液滤饼的反转乳液钻井泥浆钻了井筒。 该方法可以包括以下步骤:将破碎剂流体循环到井眼中,其中破碎剂流体包括含水流体,和亚氨基二乙酸或其盐。 任选地,还包括酸缓冲剂和加权时代。 配制破碎剂流体,使得在预定时间段之后,存在于井眼或井眼面上的滤饼基本上降解。 其他方法还可以包括用形成水基滤饼的水基钻井泥浆钻井井,其中该方法可以包括以下步骤:将破坏剂流体循环到井筒中,其中破碎剂流体可以包括水性流体, 和亚氨基二乙酸或其盐。