Drilling method and system using foam--foaming composition
    3.
    发明授权
    Drilling method and system using foam--foaming composition 失效
    钻孔方法和系统采用泡沫发泡组合物

    公开(公告)号:US6148932A

    公开(公告)日:2000-11-21

    申请号:US194732

    申请日:1998-12-02

    IPC分类号: C09K8/38 C09K7/00 E21B21/00

    CPC分类号: C09K8/38

    摘要: The invention concerns a method for underground mining comprising the following steps: circulating in a well a foaming composition containing surfactants with cloud point higher than the temperature of the underground formation, heating the composition returning from the bottom to a temperature higher than the cloud point. The invention also concerns a system and a foaming composition based on water for implementing the method. The invention is useful for drilling and oil well completion operations requiring the use of a low-density fluid.

    摘要翻译: PCT No.PCT / FR98 / 00577 Sec。 371日期1998年12月2日第 102(e)1998年12月2日日期PCT 1998年3月23日PCT PCT。 公开号WO98 / 44071 日本1998年10月8日本发明涉及一种用于地下采矿的方法,包括以下步骤:在井中循环含有浊点高于地下地层温度的表面活性剂的发泡组合物,将从底部返回的组合物加热到更高的温度 比浊点。 本发明还涉及一种用于实施该方法的基于水的系统和发泡组合物。 本发明对于需要使用低密度流体的钻井和油井完井操作是有用的。

    Process and water-base fluid for controlling the dispersion of solids
application to drilling
    4.
    发明授权
    Process and water-base fluid for controlling the dispersion of solids application to drilling 失效
    用于控制固体应用于钻井的分散体的工艺和水基流体

    公开(公告)号:US5637556A

    公开(公告)日:1997-06-10

    申请号:US433959

    申请日:1995-05-04

    CPC分类号: C09K8/12 C09K8/24

    摘要: For controlling the dispersion of solids, e.g., cuttings, in water-based fluid used during operations such as drilling, completion or workover operations in a well crossing at least one permeable geologic formation, there is added to the fluid an optimized amount of a water soluble polymer HM PAM based on acrylamide and hydrophobic units. In a variant, a useful amount of hydrophobically modified cellulose derivative, e.g., modified hydroxyethylcellulose, HMHEC, is also added, thus forming a fluid containing HM PAM and HM HEC. The process has particular application to slim-hole and/or strongly deviated drilling.

    摘要翻译: 为了控制在诸如在诸如钻井,完井或修井操作的操作中使用的水基流体中的固体,例如切屑的分散,在至少一个渗透性地质层的交叉点中,向流体中加入优化量的水 基于丙烯酰胺和疏水单元的可溶性聚合物HM PAM。 在一个变体中,还加入有用量的疏水改性的纤维素衍生物,例如改性的羟乙基纤维素,HMHEC,从而形成含有HM PAM和HM HEC的流体。 该方法特别适用于细孔和/或强烈偏斜的钻孔。

    Drilling processes and fluid used in well drilling applications
    5.
    发明授权
    Drilling processes and fluid used in well drilling applications 失效
    钻井工艺和钻井应用中使用的流体

    公开(公告)号:US5597783A

    公开(公告)日:1997-01-28

    申请号:US433958

    申请日:1995-05-04

    CPC分类号: C09K8/24 C09K8/12

    摘要: A water-base fluid of optimized composition for solving problems encountered during operations such as drilling, completion or workover operations in a well crossing at least one permeable geologic formation contains (i) a hydrophilic/hydrophobic polymer, (ii) an acrylamide-base polymer of hydrophobic unit, (iii) a hydrophobically modified cellulose derivative, and (iv) a polysaccharide type polymer.The fluid can be used in a process implemented in a well drilled through at least one formation having a given permeability and is for particular application to slim-hole and/or deviated drilling.

    摘要翻译: 一种优化组合物的水基流体,用于解决在诸如钻井,完井或修井作业的操作过程中遇到的至少一个可渗透地质构造中遇到的问题,其包含(i)亲水/疏水聚合物,(ii)丙烯酰胺基聚合物 的疏水单元,(iii)疏水改性的纤维素衍生物,和(iv)多糖型聚合物。 流体可以用于通过具有给定渗透率的至少一个地层钻井的实施过程中,并且特别适用于细孔和/或偏斜钻孔。