Emulsion in blast furnace slag mud solidification

    公开(公告)号:US5580379A

    公开(公告)日:1996-12-03

    申请号:US571006

    申请日:1995-12-12

    申请人: Kenneth M. Cowan

    发明人: Kenneth M. Cowan

    摘要: A cementitious slurry is prepared from drilling fluid, blast furnace slag and an emulsion comprising an oil external phase and an aqueous internal phase having therein a additive for said cementitious slurry. In a preferred embodiment the additive is an accelerator for the blast furnace slag such as sodium hydroxide. This allows mixing the additive with the drilling fluid and blast furnace slag without immediate contact between the additive and the other ingredients. After the cementitious slurry has been mixed and pumped into position in a wellbore, the emulsion breaks and the additives are released.

    Optimizing blast furnace slag cements
    23.
    发明授权
    Optimizing blast furnace slag cements 失效
    优化高炉矿渣水泥

    公开(公告)号:US5409064A

    公开(公告)日:1995-04-25

    申请号:US176143

    申请日:1993-12-30

    申请人: Kenneth M. Cowan

    发明人: Kenneth M. Cowan

    IPC分类号: C04B28/08 C09K8/46 E21B33/13

    CPC分类号: C09K8/46 C04B28/08 Y02W30/91

    摘要: A method and composition for cementing a well by combining water, blast furnace slag and sodium pyrophosphate to form a cement slurry, displacing the cement slurry into a well and allowing the cement slurry to set.

    摘要翻译: 一种用于通过将水,高炉渣和焦磷酸钠混合以形成水泥浆料来固井的方法和组合物,将水泥浆置于井中并使水泥浆固化。

    Cement fluid loss reduction
    26.
    发明授权
    Cement fluid loss reduction 失效
    水泥流失量减少

    公开(公告)号:US5298070A

    公开(公告)日:1994-03-29

    申请号:US993273

    申请日:1992-12-18

    申请人: Kenneth M. Cowan

    发明人: Kenneth M. Cowan

    IPC分类号: C04B24/16 C09K8/46 C04B24/00

    CPC分类号: C04B24/16 C09K8/46

    摘要: A surfactant is added to a cement containing a polymer fluid loss additive, to synergistically reduce fluid loss from the cement before it hardens.

    摘要翻译: 在含有聚合物流体损失添加剂的水泥中加入表面活性剂,以协同地减少水泥在其硬化之前的流体损失。

    Cement sealing
    29.
    发明授权
    Cement sealing 失效
    水泥密封

    公开(公告)号:US5016711A

    公开(公告)日:1991-05-21

    申请号:US316119

    申请日:1989-02-24

    申请人: Kenneth M. Cowan

    发明人: Kenneth M. Cowan

    IPC分类号: C04B28/04 C09K8/46

    CPC分类号: C04B28/04 C09K8/46

    摘要: Cement-to-casing sealing in a wellbore is improved through addition of surfactant to the cement.

    摘要翻译: 通过向水泥中加入表面活性剂,改善了井眼中的水泥 - 套管密封。

    Remedial wellbore sealing with unsaturated monomer system
    30.
    发明授权
    Remedial wellbore sealing with unsaturated monomer system 失效
    用不饱和单体体系补救井筒密封

    公开(公告)号:US5484020A

    公开(公告)日:1996-01-16

    申请号:US233150

    申请日:1994-04-25

    申请人: Kenneth M. Cowan

    发明人: Kenneth M. Cowan

    摘要: A defective cemented annulus in a wellbore is repaired by injecting a water-soluble monomeric composition having polymerizable unsaturated groups. This allows repair of leaking cement jobs where the leakage occurs through very small imperfections. In accordance with the invention, a section of the casing above the area where formation fluid pressure may be entering is sealed off with packer devices, perforated or mill cut and a monomer solution is injected into the cemented annulus.

    摘要翻译: 通过注入具有可聚合不饱和基团的水溶性单体组合物来修复井眼中的有缺陷的胶结环。 这允许修复渗漏发生的泄漏水泥作业,通过非常小的缺陷。 根据本发明,在封闭器装置封闭形成流体压力可能进入的区域之上的壳体的一部分,穿孔或铣削切割,并将单体溶液注入到胶结环空中。