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    Drilling fluid
    1.
    发明授权
    Drilling fluid 失效
    钻井液

    公开(公告)号：US3850817A

    公开(公告)日：1974-11-26

    申请号：US25513072

    申请日：1972-05-19

    Applicant: VERWALTUNGS GMBH OIL BASE GERM

    Inventor： BARTHEL H

    IPC: C09K8/05 ,  C10M3/04

    CPC classification number: C09K8/05

    Abstract: An improved drilling fluid contains magnesium carbonate and an ammonium salt, preferably ammonium chloride. Calcium hydroxide may be added to adjust the pH-value of the drilling fluid to a pH between about 8.0 and about 12.0. The drilling fluid may also contain additional salts and protective colloids.

    Abstract translation: 改进的钻井液含有碳酸镁和铵盐，优选氯化铵。 可以加入氢氧化钙以将钻井液的pH值调节至约8.0至约12.0之间的pH。 钻井液还可含有额外的盐和保护胶体。

    Oil base well drilling fluid composition and method
    2.
    发明授权
    Oil base well drilling fluid composition and method 失效
    油基钻井液组合物及方法

    公开(公告)号：US3642623A

    公开(公告)日：1972-02-15

    申请号：US3642623D

    申请日：1969-10-10

    Applicant: OIL BASE

    Inventor： BENNETT ROBERT B ,  MCMORDIE WARREN C JR

    IPC: C09K8/36 ,  C09K3/00 ,  B01F17/42

    CPC classification number: C09K8/36 ,  Y10S507/91 ,  Y10S516/05 ,  Y10S516/07

    Abstract: STABILIZATION OF OIL CONTINUOUS PHASE WELL FLUIDS, PARTICULARLY OIL BASE DRILLING FLUIDS, AGAINST CONTAMINATION WITH WATER-SOLUBLE ALKALINE EARTH SALTS, E.G., CALCIUM CHLORIDE, IS ACCOMPLISHED BY ADDITION OF A NOVEL ADDITIVE SYSTEM COMPRISING A WATER-SOLUBLE ACID-BLOCKED ALKANOLAMIDE NONIONIC SURFACTANT, A SULFONATED ACID ANIONIC SURFACTANT AND AN OIL-SOLUBLE NONIONIC ETHOXYLATED ALKYL PHENOL. THE ADDITIVE SYSTEM CONTROLS THE WATER WETTABLE SOLIDS IN AN OIL BASE WELL FLUID SYSTEM IN THE PRESENCE OF ALKALINE EARTH SALTS FOR EXTENDED PERIOD AT HIGH TEMPERATURE KEEPING SUCH SOLIDS IN THE OIL-WET STATE.

    Water loss additive for sea water mud comprising an alkaline earth oxide or hydroxide, starch and polyvinyl alcohol
    6.
    发明授权
    Water loss additive for sea water mud comprising an alkaline earth oxide or hydroxide, starch and polyvinyl alcohol 失效
    包含碱土金属氧化物或氢氧化物，淀粉和聚乙烯醇的海水泥水失水添加剂

    公开(公告)号：US3872018A

    公开(公告)日：1975-03-18

    申请号：US30685672

    申请日：1972-11-15

    Applicant: OIL BASE

    Inventor： ALEXANDER ALBERT H D

    IPC: C09K8/12 ,  C10M3/16

    CPC classification number: C09K8/12

    Abstract: Fluid loss control at temperatures over 300* F in clay-free sea water muds of the type containing alkaline earth oxides, hydroxides and salts in a brine solution and using starch as a fluid loss control agent is improved by addition of polyvinyl alcohol with the starch. Urea with the polyvinyl alcohol further increases temperature stability of the systems.

    Abstract translation: 在盐水溶液中含有碱土金属氧化物，氢氧化物和盐类的无粘土海水泥浆中，在超过300°F的温度下进行流体损失控制，并使用淀粉作为流体损失控制剂，通过加入聚乙烯醇与淀粉 。 具有聚乙烯醇的尿素进一步提高了系统的温度稳定性。

    Drilling fluid and method of use
    7.
    发明授权
    Drilling fluid and method of use 失效
    钻井液及其使用方法

    公开(公告)号：US3634235A

    公开(公告)日：1972-01-11

    申请号：US3634235D

    申请日：1967-12-21

    Applicant: OIL BASE

    Inventor： WILSON DOYNE L ,  BENNETT ROBERT B

    IPC: C09K8/32 ,  C10M1/08

    CPC classification number: C09K8/32 ,  Y10S507/91

    Abstract: PRE-TEATMENT OR POST-TREATMENT OF OIL BASE DRILLING FLUIDS FOR OIL WELL APPLICATIONS FOR PURPOSES OF STABILIZING THE FLUID AGANINST DETERIORATION UPON CONTAMINATION WITH WATER BASE DRILLING FLUIDS, WITH OR WITHOUT CLAY SOLIDS, IS EFFECTED BY ADDING TO THE OIL BASE FLUID AN AMPHOTERIC SURFACE-ACTIVE AGENT CONTAINING BOTH ANIONIC AND CATIONIC SURFACE-ACTIVE GROUPS. EXEMPLARY COMPOUNDS WHICH ARE EXTREMELY EFFECTIVE SUFACE-ACTIVE AGENTS IN THE FUNCTION ARE AMINES AND BETAINES WHICH CONTAIN ONE OR MORE CARBOXYL OR CARBOXYLATE GROUPS. ENHANCED EFFECTS ARE ALSO AVAILABLE EMPLOYING SUCH AMPHOTERIC COMPOUNDS WITH SUFONATE TYPE ANINIC SURFACE-ACTIVE AGENTS.

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