Process and agents for controlling the swelling of clays in the presence
of sea-water and clay-based muds
    3.
    发明授权
    Process and agents for controlling the swelling of clays in the presence of sea-water and clay-based muds 失效
    在海水和泥土泥浆存在下控制粘土溶胀的工艺和试剂

    公开(公告)号:US4666613A

    公开(公告)日:1987-05-19

    申请号:US600811

    申请日:1984-04-16

    IPC分类号: C09K8/22 C09K7/02

    CPC分类号: C09K8/22 Y10S507/904

    摘要: Process for controlling the swelling of clays of bentonite type clays in the presence of salt-water in the preparation of drilling fluids, comprising the steps ofselecting at least one compound from the group of salifiable active compounds comprisingcyanamide, hexamethylenetetramine, guanidine and aminoguanidine,those having the formula:NH.sub.3-n [(CH.sub.2).sub.m --OH].sub.n (I) in which m is equal to 2, 3 or 4 and n to 1, 2 or 3 with the possibility, when m is equal to 3 or 4, of having a branched chain,those having the formula:NH.sub.2 [(CH.sub.2).sub.m --NH].sub.n (CH.sub.2).sub.m --NH.sub.2 (II) in which m is equal to 2, 3, 4, 5 or 6 and n is a whole number from 0 to 10,derivatives of formula (I) and (II),preparing a concentrated mixture, also called premix, of bentonite and soft water,diluting the premix with salt water up to the concentration desired for the drilling fluid,introducing in the premix or in the soft water used for its preparation, or in the premix diluted with salt water, or in the salt water used for diluting the premix, an effective amount of the said a least one active compound without satisfying the same, orintroducing the at least one active compound after salification either in the salt water used for dilution of the premix or into the final diluted mixture or in the premix diluted with soft water.

    摘要翻译: 包括在制备钻井液的盐水存在下控制膨润土型粘土的粘土膨胀的方法,包括从包括氨基氰,六亚甲基四胺,胍和氨基胍的可乳化活性化合物组中选择至少一种化合物的步骤, 具有下式的那些:NH 3-n [(CH 2)m -OH] n(I),其中m等于2,3或4且n至1,2或3,当m等于3或 4,具有支链的那些是具有下式的NH 2 [(CH 2)m -NH] n(CH 2)m -NH 2(II)),其中m等于2,3,4,5或6,n是 0至10的整数,式(I)和(II)的衍生物,制备膨润土和软水的浓缩混合物,也称为预混物,用盐水将预混物稀释至钻井液所需的浓度, 在预混物或用于其制备的软水中引入,或在用盐水稀释的预混物中或在用于稀释pr的盐水中 emix,有效量的所述至少一种活性化合物不满足,或在成盐后将所述至少一种活性化合物引入用于稀释预混物的盐水中或在最终稀释混合物中或在预混物中稀释 用软水。