摘要:
A valving device includes a body having a bore hole and a slot, the slot providing fluidic communication between the bore hole and an outside of the body. A cylinder is rotationally movably engaged within the bore hole and has an opening providing fluidic communication between an outer radial surface of the cylinder and a cavity therewithin. The valving device is configured to alter a portion of the slot in fluidic communication with the opening.
摘要:
A gravel pack multi-pathway tube includes a body and a flow passage at the body. Further, the tube includes a projection at the body, the projection receptive to a control line. A gravel packing device component wherein the component includes a shroud, a multi-pathway tube at the shroud, and a projection appurtenant the multi-pathway tube, the projection being receptive to a control line. A method for running and protecting a control line at a gravel pack component, which includes running a component into a wellbore wherein the component includes a shroud, a multi-pathway tube at the shroud, and a projection appurtenant the multi-pathway tube, the projection being receptive to a control line and inserting a control line at the projection.
摘要:
Procedure for the preparation of aromatic derivatives of titanocene, useful as catalysts for the polymerisation and hydrogenation of polymers, characterised by the use of a Grignard reagent. This procedure allows to easily prepare compounds with the general formula where: L, which can be equal to or different one from the other, are cyclopentadiene, or pentamethylcyclopentadiene; preferably at least one L is cyclopentadiene; R1, R2, R3, equal or different from one another, are selected from the group consisting of: hydrogen, alkyl group from 1 to 4 carbon atoms, OR4 where R4 is an alkyl group of 1 to 4 carbon atoms; at least one of the R1, R2 or R3 is hydrogen. The preparation is carried out by the reaction of the titanocene dichloride with the corresponding Grignard reagent. This method substantially enhances safety, reproducibility, yield and cost of that carried out via lithium compounds.
摘要翻译:用于制备二茂钛芳族衍生物的方法,其用作聚合反应和氢化的催化剂,其特征在于使用格氏试剂。 该方法允许容易地制备具有一般形式的化合物:L可以是彼此相同或不同的化合物是环戊二烯或五甲基环戊二烯; 优选至少一个L是环戊二烯; R 1,R 2,R 3彼此相同或不同,选自:氢,1至4个碳原子的烷基,OR 4,其中R 4是1至4个碳原子的烷基; R 1,R 2或R 3中的至少一个为氢。 该制备通过二氯二氯与相应的格氏试剂的反应进行。 该方法通过锂化合物实质上提高了安全性,再现性,产率和成本。
摘要:
A signal processing module includes an input module electronically coupled to a sensing probe of a nerve integrity monitoring system. The probe senses electrical signals from a patient during operation of an electrosurgical unit. The input module receives an input signal from the probe. An EMG detection module is coupled to the input module and is adapted to detect conditions in the input signal. The conditions are classified as a function of a level of electromyographic activity. An output module, coupled to the EMG detection module, provides an indication of electromyographic activity in the input signal based on the detected conditions.
摘要:
A unitary gravel pack multi-pathway tube includes a body; a gravel slurry flow passage defined within the body; and a control line protection projection extending from and supported by the body, the projection extending laterally from the body relative to an extent of the flow passage and method.
摘要:
This invention is related to a method for the preparation of heterogeneous catalysts, useful for the production of poliolefins. The method is characterized because said catalysts are obtained by supporting onto solids soluble metallocenes possessing one or more functional groups. Said functional groups are characterized because they can react with other reactive groups on the surface of the solids. The reactive groups on the solids can be part of said solids or incorporated by means of chemical modification. These catalyst systems are especially appropiated for the polymerization of one or several 1-olefins having from 2 to 20 carbon atoms in their chain. Further, they are especially appropiated for the copolymerization of ethylene with 1-olefins having from 3 to 20 carbon atoms in their chains. These polymerization processes can be carried out in gas-phase slurry or solution, at high temperatures and pressures.
摘要:
A connector system including a first connector configured to electrically and/or optically connect to a second connector. The first connector includes a first connector body configured to engage with the second connector; a first housing remotely located from the first connector body; a first connecting line including at least one of an electrical control line and an optical fiber connecting the first housing to the first connector body; a first main control line including at least one of an electrical control line and an optical fiber connected to the first housing; and, a first pressure isolator associated with the first housing, the first pressure isolator isolating pressure within the first main control line from pressure within the first connecting line and the first connector body. The first housing and the first connecting line are interposed between the first main control line and the first connector body.
摘要:
A signal processing module includes an input module electronically coupled to a sensing probe of a nerve integrity monitoring system. The probe senses electrical signals from a patient during operation of an electrosurgical unit. The input module receives an input signal from the probe. An EMG detection module is coupled to the input module and is adapted to detect conditions in the input signal. The conditions are classified as a function of a level of electromyographic activity. An output module, coupled to the EMG detection module, provides an indication of electromyographic activity in the input signal based on the detected conditions.
摘要:
A flexible pipe pig includes a grouping of a plurality of individual piglets and at least one flexible member interconnecting piglets. An optic fiber for installation in an extended conduit. The fiber includes a length of optic fiber and at least one flexible pipe pig attached thereto. A method for preparing an optic fiber for installation through a conduit. The method includes attaching a flexible pipe pig, having a grouping of a plurality of piglets, to the optic fiber. A pipe pig including a body having a non-deflected outside dimension in a single cross-section of the body, which represents a largest transaxial cross-section of the body, the cross-section of the body being smaller than an inside dimension of a conduit through which the pipe pig is intended to be run.
摘要:
The present invention relates to a bidenitate diimino-complex of nickel or palladium containing at least one group OSi(R)3 wherein each R, equal to or different from each other, is selected from the group consisting of: C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C2-C20 alkenyl, C7-C20 arylalkyl, C7-C20 alkylaryl, C8-C20 arylalkenyl, and C8-C20 alkenylaryl, linear or branched, preferably each R is independently methyl, ethyl or propyl. The present invention also relates to the process for the preparation of bidentate diimino complexes of nickel and palladium as well as the process for their use in olefin polymerization.