Microemulsions used as spacer fluids
    1.
    发明授权
    Microemulsions used as spacer fluids 有权
    微乳液用作间隔液

    公开(公告)号:US08415279B2

    公开(公告)日:2013-04-09

    申请号:US12764649

    申请日:2010-04-21

    IPC分类号: E21B43/00

    CPC分类号: C09K8/52 C09K8/40 C09K8/524

    摘要: Nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor III) or single phase microemulsions (Winsor IV) may be pre-formed and used as one or more fluid pills during hydrocarbon recovery operations after drilling with OBM or SBM. The nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both or single phase microemulsions remove oil and solids from the well and wellbore surfaces. In one non-limiting embodiment, a single phase microemulsion (SPME) or other pre-formed fluid may be created from a polar phase, a nonpolar phase, an optional viscosifier, and at least one surfactant.

    摘要翻译: 在用OBM或SBM钻孔后,在油气回收操作期间,可以预先形成纳米乳剂,微乳液,具有多余油或水或两者(Winsor III)或单相微乳液(Winsor IV)的微乳液系统作为一种或多种流体药片。 具有过量油或水或二相微乳液的纳米乳液,微乳液,微乳液系统从井和井眼表面去除油和固体。 在一个非限制性实施方案中,可以从极性相,非极性相,任选的增粘剂和至少一种表面活性剂产生单相微乳液(SPME)或其它预成形流体。

    Microemulsions to convert OBM filter cakes to WBM filter cakes having filtration control
    2.
    发明授权
    Microemulsions to convert OBM filter cakes to WBM filter cakes having filtration control 有权
    微乳液将OBM过滤蛋糕转换为具有过滤控制的WBM过滤蛋糕

    公开(公告)号:US07709421B2

    公开(公告)日:2010-05-04

    申请号:US11873775

    申请日:2007-10-17

    IPC分类号: B01F3/08 C09K8/28 E21B43/27

    摘要: Single phase microemulsions improve the removal of filter cakes formed during drilling with oil-based muds (OBMs). The single phase microemulsion removes oil and solids from the deposited filter cake. Optionally, an acid capable of solubilizing the filter cake bridging particles may also be used with the microemulsion. In one non-limiting embodiment the acid may be a polyamino carboxylic acid. Skin damage removal from internal and external filter cake deposition can be reduced. In another optional embodiment, the single phase microemulsion may contain a filtration control additive for delaying the filter cake removal, destruction or conversion.

    摘要翻译: 单相微乳液改善了用油基泥浆(OBM)钻孔过程中形成的滤饼。 单相微乳液从沉积的滤饼中除去油和固体。 任选地,也可以与微乳液一起使用能够增溶滤饼桥接颗粒的酸。 在一个非限制性实施方案中,酸可以是聚氨基羧酸。 可以减少从内部和外部滤饼沉积物中去除皮肤损伤。 在另一个可选的实施方案中,单相微乳液可以含有用于延迟滤饼去除,破坏或转化的过滤控制添加剂。

    Single Phase Microemulsions and In Situ Microemulsions for Cleaning Formation Damage
    3.
    发明申请
    Single Phase Microemulsions and In Situ Microemulsions for Cleaning Formation Damage 有权
    单相微乳液和原位微乳液用于清洁形成损伤

    公开(公告)号:US20090008091A1

    公开(公告)日:2009-01-08

    申请号:US12146647

    申请日:2008-06-26

    IPC分类号: E21B43/22

    CPC分类号: C09K8/524 C09K8/528 E21B37/08

    摘要: Single phase microemulsions (SPMEs) and in situ-formed microemulsions may be used to clean up and remove non-polar materials from reservoir production zones of oil and gas wells. This clean up occurs by solubilization of the non-polar material into the microemulsion when the treatment fluid contacts the non-polar material. An in situ microemulsion may be formed when one or more surfactant and a polar phase (e.g. water or brine), and eventually some small amount of organic phase, contacts the reservoir formation and solubilizes the non-polar material encountered in the porous media. The microemulsions are effective for removing the formation damage caused by non-polar materials which include, but are not necessarily limited to oil-based mud, synthetic-based mud, paraffins, asphaltenes, emulsions, slugs, and combinations thereof.

    摘要翻译: 单相微乳液(SPME)和原位形成的微乳液可用于从油气井油藏生产区清理和除去非极性物质。 当处理流体接触非极性材料时,通过将非极性材料溶解到微乳液中来进行清洁。 当一种或多种表面活性剂和极性相(例如水或盐水)和最终少量的有机相接触储层形成并​​溶解在多孔介质中遇到的非极性材料时,可以形成原位微乳液。 微乳液对于去除由非极性材料引起的地层损伤是有效的,其包括但不一定限于油基泥浆,合成基泥浆,石蜡,沥青质,乳液,s块及其组合。

    METHOD FOR CHANGING THE WETTABILITY OF ROCK FORMATIONS
    5.
    发明申请
    METHOD FOR CHANGING THE WETTABILITY OF ROCK FORMATIONS 有权
    改变岩石的湿度的方法

    公开(公告)号:US20090325826A1

    公开(公告)日:2009-12-31

    申请号:US12490783

    申请日:2009-06-24

    IPC分类号: C09K8/68

    CPC分类号: C09K8/58 C09K8/584

    摘要: Single-phase microemulsions (SPMES) and in situ-formed microemulsions in water-wetting pills may be used to reverse the wettability of subterranean rock previously drilled with an oil-based mud or synthetic-based mud before pumping a high fluid loss squeeze pill or crosslink pill or other water-based pill. This wettability reversal occurs by solubilization of the non-polar material into the microemulsion when the water-wetting pill contacts the non-polar material. An in situ microemulsion may be formed when one or more surfactant and a polar phase (e.g. water or brine), and eventually some amount of organic phase, contacts the reservoir formation and reverses the wettability encountered in the porous media. The microemulsions are effective for reversing the wettability that occurs from non-polar materials which include, but are not necessarily limited to, oil-based mud, synthetic-based mud, paraffins, asphaltenes, emulsions, slugs, and combinations thereof.

    摘要翻译: 可以使用单相微乳液(SPMES)和水润湿丸中的原位形成的微乳液来逆转先前用油基泥浆或合成基泥浆钻孔的地下岩石的润湿性,然后再抽取高流失液挤压丸剂或 交联丸或其他水性药丸。 当湿润药片与非极性材料接触时,通过将非极性材料溶解到微乳液中来发生这种润湿性反转。 当一种或多种表面活性剂和极性相(例如水或盐水)和最终一些量的有机相接触储层形成并​​反转在多孔介质中遇到的润湿性时,可以形成原位微乳液。 微乳液可有效地逆转由非极性材料发生的润湿性,这些非极性材料包括但不一定限于油基泥浆,合成基泥浆,石蜡,沥青质,乳液,s块及其组合。

    In situ microemulsions used as spacer fluids
    7.
    发明授权
    In situ microemulsions used as spacer fluids 有权
    用作间隔液的原位微乳液

    公开(公告)号:US08871695B2

    公开(公告)日:2014-10-28

    申请号:US12107185

    申请日:2008-04-22

    IPC分类号: C09K8/08 C09K8/524 C09K8/52

    CPC分类号: C09K8/52 C09K8/524

    摘要: Nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor III) or single phase microemulsions (Winsor IV) may be formed in situ during hydrocarbon recovery operations after drilling with OBM or SBM using one or more fluid pills. The nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both or single phase microemulsions remove oil and solids from the well and wellbore surfaces. In one non-limiting embodiment, a single phase microemulsion (SPME) or other in situ-formed fluid may be created from a polar phase, a nonpolar phase, at least one viscosifier, and at least one surfactant.

    摘要翻译: 在用OBM或SBM使用一种或多种流体药丸进行钻孔之后,可以在烃回收操作期间原位形成纳米乳剂,微乳液,具有多余油或水的两者的微乳液系统(Winsor III)或单相微乳液(Winsor IV)。 具有过量油或水或二相微乳液的纳米乳液,微乳液,微乳液系统从井和井眼表面去除油和固体。 在一个非限制性实施方案中,可以从极性相,非极性相,至少一种增粘剂和至少一种表面活性剂产生单相微乳液(SPME)或其它原位形成的流体。

    Method for changing the wettability of rock formations
    8.
    发明授权
    Method for changing the wettability of rock formations 有权
    改变岩层润湿性的方法

    公开(公告)号:US08210263B2

    公开(公告)日:2012-07-03

    申请号:US12490783

    申请日:2009-06-24

    IPC分类号: E21B37/00

    CPC分类号: C09K8/58 C09K8/584

    摘要: Single-phase microemulsions (SPMEs) and in situ-formed microemulsions in water-wetting pills may be used to reverse the wettability of subterranean rock previously drilled with an oil-based mud or synthetic-based mud before pumping a high fluid loss squeeze pill or crosslink pill or other water-based pill. This wettability reversal occurs by solubilization of the non-polar material into the microemulsion when the water-wetting pill contacts the non-polar material. An in situ microemulsion may be formed when one or more surfactant and a polar phase (e.g. water or brine), and eventually some amount of organic phase, contacts the reservoir formation and reverses the wettability encountered in the porous media. The microemulsions are effective for reversing the wettability that occurs from non-polar materials which include, but are not necessarily limited to, oil-based mud, synthetic-based mud, paraffins, asphaltenes, emulsions, slugs, and combinations thereof.

    摘要翻译: 可以使用单相微乳液(SPME)和在水润湿丸中的原位形成的微乳液来逆转先前用油基泥浆或合成基泥浆钻孔的地下岩石的润湿性,然后泵送高流失液挤压丸剂或 交联丸或其他水性药丸。 当湿润药片与非极性材料接触时,通过将非极性材料溶解到微乳液中来发生这种润湿性反转。 当一种或多种表面活性剂和极性相(例如水或盐水)和最终一些量的有机相接触储层形成并​​反转在多孔介质中遇到的润湿性时,可以形成原位微乳液。 微乳液可有效地逆转由非极性材料发生的润湿性,这些非极性材料包括但不一定限于油基泥浆,合成基泥浆,石蜡,沥青质,乳液,s块及其组合。

    Single phase microemulsions and in situ microemulsions for cleaning formation damage
    9.
    发明授权
    Single phase microemulsions and in situ microemulsions for cleaning formation damage 有权
    单相微乳液和原位微乳液用于清洁地层损伤

    公开(公告)号:US08091646B2

    公开(公告)日:2012-01-10

    申请号:US12146647

    申请日:2008-06-26

    IPC分类号: E21B37/00

    CPC分类号: C09K8/524 C09K8/528 E21B37/08

    摘要: Single phase microemulsions (SPMEs) and in situ-formed microemulsions may be used to clean up and remove non-polar materials from reservoir production zones of oil and gas wells. This clean up occurs by solubilization of the non-polar material into the microemulsion when the treatment fluid contacts the non-polar material. An in situ microemulsion may be formed when one or more surfactant and a polar phase (e.g. water or brine), and eventually some small amount of organic phase, contacts the reservoir formation and solubilizes the non-polar material encountered in the porous media. The microemulsions are effective for removing the formation damage caused by non-polar materials which include, but are not necessarily limited to oil-based mud, synthetic-based mud, paraffins, asphaltenes, emulsions, slugs, and combinations thereof.

    摘要翻译: 单相微乳液(SPME)和原位形成的微乳液可用于从油气井油藏生产区清理和除去非极性物质。 当处理流体接触非极性材料时,通过将非极性材料溶解到微乳液中来进行清洁。 当一种或多种表面活性剂和极性相(例如水或盐水)和最终少量的有机相接触储层形成并​​溶解在多孔介质中遇到的非极性材料时,可以形成原位微乳液。 微乳液对于去除由非极性材料引起的地层损伤是有效的,其包括但不一定限于油基泥浆,合成基泥浆,石蜡,沥青质,乳液,s块及其组合。

    In situ fluid formation for cleaning oil- or synthetic oil-based mud
    10.
    发明授权
    In situ fluid formation for cleaning oil- or synthetic oil-based mud 有权
    用于清洁油或合成油基泥浆的原位流体形成

    公开(公告)号:US08091645B2

    公开(公告)日:2012-01-10

    申请号:US11866486

    申请日:2007-10-03

    IPC分类号: E21B37/08

    摘要: Nanoemulsion, macroemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor I, II or III phase behavior) or single phase microemulsions (Winsor IV) improve the removal of filter cakes formed during hydrocarbon reservoir wellbore drilling with OBM. The macroemulsion, nanoemulsion, miniemulsion, microemulsion systems with excess oil or water or both or single phase microemulsion removes oil and solids from the deposited filter cake. In one non-limiting embodiment, the emulsion system (e.g. single phase microemulsion, nanoemulsion, or other emulsions) may be formed in situ (downhole) rather than produced or prepared in advance and pumped downhole. Skin damage removal from internal and external filter cake deposition can be reduced.

    摘要翻译: 纳米乳液,微乳液,微乳液,具有过量油或水的微乳液系统(Winsor I,II或III相行为)或单相微乳液(Winsor IV)改善了使用OBM在油气藏井眼钻井过程中形成的滤饼的去除。 具有过量油或水或两相或微相乳液的微乳液,纳米乳液,微乳液,微乳液系统从沉积的滤饼中除去油和固体。 在一个非限制性实施方案中,可以原位(井下)形成乳液体系(例如单相微乳液,纳米乳液或其它乳液),而不是预先生产或制备并在井下泵送。 可以减少从内部和外部滤饼沉积物中去除皮肤损伤。