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236 条记录 (耗时 0.02 秒)

    Apparatus and method for avoiding a drill string becoming stuck during drilling
    72.
    发明公开
    Apparatus and method for avoiding a drill string becoming stuck during drilling 失效
    装置和用于防止在钻井过程中的钻柱的阻塞方法。

    公开(公告)号：EP0354716A1

    公开(公告)日：1990-02-14

    申请号：EP89307847.7

    申请日：1989-08-02

    申请人： CHEVRON RESEARCH AND TECHNOLOGY COMPANY

    发明人： Hempkins, W. Brent ,  Lohec, Wesley E. ,  Kingsborough, Roger H. ,  Nini, Conroy J.

    IPC分类号： E21B44/00

    CPC分类号： E21B44/00 ,  E21B31/03

    摘要： Apparatus for avoiding stuck drilling equipment during drilling of a well bore over depth intervals where such equipment has stick in similar wells in a geological province includes data storage means for recording a multiplicity of well drilling variable quantities measured substantially simultaneously at a known depth in each of a multiplicity of wells. Such multiplicity of wells includes those in which drilling equipment has stuck and a multiplicity of similar wells where the drill string did not stick. Such data forms the input to multivariate statistical analysis means for calculating for all variables in all wells of each class the maximum separation of said classes from each other. The centroids of all well vectors representing each of the multiplicity of wells in each such classes are then recorded either numerically or by plotting. A currently drilling well relative to said classes is then established by means for calculating its well vector relative to the well classes. Such calculating means sums the products of the coefficient of each variable for the complete group of wells times the current value of each variable in the drilling well. The well vector is then recorded to plot or indicate which variable may be modified within allowable values to change the plotted location of the drilling well toward the centroid or mean of the wells that did not stick the drill string.
    A method of determining whether a stuck drill string can be freed is provided by calculating the centroids of two groups of stuck wells using the same procedure for multivariate analysis of a multiplicity of drilling parameters to identify whether or not a stuck well is in a group of wells which could not be unstuck.

    摘要翻译： 装置用于在深度区间上的井孔，其中寻求设备已经粘在类似孔中地质区域的钻探期间避免卡住钻设备包括数据存储装置，用于记录在每个以已知深度处测得基本上同时钻井变量的数量的多个 孔的多个。 井的搜索多样性包括那些在钻井设备一直坚持和类似井在钻柱没有坚持的多样性。 的Web数据形成输入到多变量统计分析装置，用于计算在每个类从海誓山盟说类的最大分离的所有孔中的所有变量。 然后表示每个搜索类别的每一个孔的多重性的所有油井矢量的矩心被记录数字或通过标绘。 当前钻井相对于所述类别随后被用于油井矢量相对其计算到井类建立。 搜索计算装置总结在钻孔的每个变量的当前值以及的孔倍完整组的每个变量的系数的产品。 然后将油井矢量被记录绘制或指示哪个变量可以允许值内进行修改以改变钻孔的所绘制的位置以及朝向质心或孔的平均也不会粘附钻柱。确定性挖掘是否灰泥的方法 钻柱能被解脱'是通过计算两个组使用相同的步骤用于钻井参数的多个的多变量分析被卡油井的矩心，以确定一个被卡油井是否是一组井可能不会粘住的中提供。

    Pipeline rehabilitation method utilizing articulated gasketed joint pipe
    76.
    发明公开
    Pipeline rehabilitation method utilizing articulated gasketed joint pipe 失效
    Rohrleitungsreparatur-Methode unter Verwendung einer gegliederten dichten Rohrverbindung。

    公开(公告)号：EP0297385A1

    公开(公告)日：1989-01-04

    申请号：EP88109816.4

    申请日：1988-06-21

    申请人： CHEVRON RESEARCH AND TECHNOLOGY COMPANY

    发明人： Smith, Harold R. ,  Kemp, Eric E.

    IPC分类号： F16L55/18 ,  F16L1/00

    CPC分类号： F16L55/18 ,  F16L55/1657

    摘要： A method of rehabilitating buried pipelines by the introduction of a particular liner pipe comprising sections of polyethylene pipe connected by articulated gasketed joints of bell and spigot design which are specifically adapted for ease of lining large diameter pipeliner with minimum disruption to surface traffic and pipeline flow.

    摘要翻译： 通过引入特殊内衬管道来修复埋地管道的方法，其特征在于，该管道包括聚乙烯管段，其通过铰接的罩和套管设计连接，其特别适用于以最小的表面流量和管道流动中断的方式衬管大直径管道。

    Anthracene polyarylate copolymers and alloy compositions thereof
    78.
    发明公开
    Anthracene polyarylate copolymers and alloy compositions thereof 失效
    蒽多聚芳基聚糖和Zusammensetzungen davon。

    公开(公告)号：EP0242465A1

    公开(公告)日：1987-10-28

    申请号：EP86303007.8

    申请日：1986-04-21

    申请人： CHEVRON RESEARCH AND TECHNOLOGY COMPANY

    发明人： Parker, Phillip H.

    IPC分类号： C08G63/18 ,  C08L67/02

    CPC分类号： C08L67/03 ,  C08G63/193 ,  C08L69/00 ,  C08L2666/18 ,  C08L2666/04

    摘要： Polyarylate copolymers derived from (A) mixtures of 5-keto-bis(hydroxyphenyl)anthracene compounds with bisphenols, such as bisphenol A, and (B) a mixture of isophthalic and terephthalic acid, exhibit improved thermal properties. Also disclosed as having improved thermal properties are polyarylate alloy compositions comprising a 5-keto-bis(hydroxyphenyl)anthracene polyarylate and a polymer resin selected from polybisphenol A carbonate and polystyrene.

    摘要翻译： 衍生自（A）5-酮 - 双（羟基苯基）蒽化合物与双酚（例如双酚A）和（B）间苯二甲酸和对苯二甲酸的混合物的混合物的聚芳酯共聚物表现出改善的热性能。 还公开具有改进的热性能的是包含5-酮 - 双（羟基苯基）蒽多芳基化合物和选自聚双苯酚A碳酸酯和聚苯乙烯的聚合物树脂的聚芳酯合金组合物。

    Lubricating oil compositions containing bis-mannich base deposit inhibitors
    79.
    发明公开
    Lubricating oil compositions containing bis-mannich base deposit inhibitors 失效
    Schmierölzusammensetzungen，死于Bis-Mannich-Base enthalten als Ablagerungsschutzmittel。

    公开(公告)号：EP0240291A2

    公开(公告)日：1987-10-07

    申请号：EP87302747.8

    申请日：1987-03-30

    申请人： CHEVRON RESEARCH AND TECHNOLOGY COMPANY

    发明人： Harrison, James J.

    IPC分类号： C10M133/08

    CPC分类号： C10M133/08 ,  C10M2215/042 ,  C10N2240/10 ,  C10N2240/101 ,  C10N2240/104 ,  C10N2240/106 ,  C10N2270/02

    摘要： Bis-Mannich bases of the general formula:
    wherein R₁ is independently alkylene of from 1 to 4 carbon atoms; R₂ is alkylene of from 2 to 6 carbon atoms; R₃ and R₄ are independently hydrocarbyl of from 1 to 30 carbon atoms with the proviso that the sum of all R₃ and R₄ hydrocarbyl carbon atoms is sufficient to render the com­pound of formula I oil-soluble; R₅ is independently selected from hydrogen, alkyl of from 1 to 6 carbon atoms, phenyl and phenyl substituted by 1 or 2 substituents selected from hydroxy and alkyl of from 1 to 6 carbon atoms and salts thereof have been found to be effective as deposit inhibitors in internal combustion engines when incorporated in lubricating oils used in such engines.

    摘要翻译： 双曼尼希碱，其通式为：，其中R 1独立地为具有1至4个碳原子的亚烷基; R2是2至6个碳原子的亚烷基; R3和R4独立地为1至30个碳原子的烃基，条件是所有R3和R4烃基碳原子的总和足以使式I化合物油溶; R5独立地选自氢，1至6个碳原子的烷基，苯基和被1或2个选自羟基和1至6个碳原子的烷基取代的苯基及其盐被认为是有效的沉积抑制剂 当内燃机被掺入用于这种发动机的润滑油中时。

    Method of avoiding a drill string becoming stuck during drilling
    80.
    发明公开
    Method of avoiding a drill string becoming stuck during drilling 失效
    Verfahren zum Verhindern der Blockierung einesBohrgestängeswährenddes Bohrens。

    公开(公告)号：EP0209343A2

    公开(公告)日：1987-01-21

    申请号：EP86305395.5

    申请日：1986-07-14

    申请人： CHEVRON RESEARCH AND TECHNOLOGY COMPANY

    发明人： Hempkins, W. Brent ,  Kinsborough, Roger H. ,  Lohec, Wesley E. ,  Nini, Conroy J.

    IPC分类号： E21B44/00 ,  E21B31/03 ,  E21B21/00

    CPC分类号： E21B21/00 ,  E21B31/03 ,  E21B43/30 ,  E21B44/00

    摘要： n a method of avoiding a drill string becoming stuck during drilling of a well over depth intervals where such equipment has become stuck in similar wells in a geological province, a multiplicity of well drilling variable quantities are measured substantially simultaneously at a known depth in each of a multiplicity of wells. Such multiplicity of wells includes those in which drilling equipment has stuck due to mechanical problems or differential pressure between the drill string and an earth formation penetrated by the well bore, or both, and a multiplicity of similar wells where the drill string did not stick. By multivariate statistical analysis of all variables in all wells of each class, together with maximum separation of said classes from each other, a plotting plane for a currently drilling well relative to said classes is established. The location of the relative position of all variables in such a drilling well with respect to the well classes is determined by summing the products of the coefficient of each variable for the complete group of wells times the current value of the variables in the drilling well. The variables are then modified within allowable values to change the plotted location of the drilling well toward the mean of the wells that did not cause the drill string to stick.

    摘要翻译： 在这样一种方法中，避免在钻井过程中钻井过程中钻井过程中这种设备已经停留在地质省的类似井中的钻井柱，这样一来，钻井可变数量的大量基本上同时以每个 多个井。 井的这种多重性包括钻井设备由于机械问题或钻柱与由井眼或两者渗入的地层之间的压差以及钻柱未粘附的多个类似井而被卡住的孔。 通过对每个类别的所有井中所有变量的多元统计分析，以及所述类别彼此的最大分离，建立了相对于所述类别的当前钻井的绘图平面。 通过将整组井的每个变量的系数的乘积乘以钻井中的变量的当前值，将所有变量在相对于井类的钻井中的相对位置的位置求和。 然后将变量修改为允许值，以便将钻井的绘制位置改变为不会导致钻柱粘住的孔的平均值。