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首页> 外国专利> METHOD FOR PRESSURIZATION OF INTER-COLUMN SPACE OF OIL AND GAS EXTRACTIVE WELL MOUTH BETWEEN CONDUCTOR AND OPERATION COLUMN AND DEVICE FOR REALIZATION OF SAID METHOD

METHOD FOR PRESSURIZATION OF INTER-COLUMN SPACE OF OIL AND GAS EXTRACTIVE WELL MOUTH BETWEEN CONDUCTOR AND OPERATION COLUMN AND DEVICE FOR REALIZATION OF SAID METHOD

机译：导体与工作柱之间的油和气萃取柱口间柱间压力的加压方法及实现方法

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FIELD: oil and gas industry.;SUBSTANCE: method includes cutting conductor at height of mouth armature mounting place and cutting operation column at level no lower than plane of flange for mouth armature. For realization of method a device with elements for holding and supporting operation column and pressurizing elements is manufactured. Device is made of two, upper and lower, stepped-shape bushings interconnected by thread. Upper bushing is made with outer thread at upper end, inner thread at lower end for connection to lower bushing, with outer shelf for upper end of conductor and outer diameter lower than shelf for inner diameter of conductor. On upper end inside the bushing a ring-shaped recess is made and a ring channel with inner shelf for upper pressurizing element. Below the shelf in body of bushing a through radial channel for connection of behind-column space to pressure manometer through branch pipe and locking tool is made. Lower bushing is made with outer shelf, below which its outer diameter is made for inner conductor diameter, and inner longitudinal channel is made for outer diameter of operation column. Elements for holding and supporting operation column are made in body of lower portion of lower bushing in form of no less than three cylindrical channels, placed evenly around the bushing at an angle from outside into inside of longitudinal axis of bushing, lower open ends of which channels are outputted into inner longitudinal channel of bushing. Into slanted cylindrical channels balls are loaded, spring-loaded on upper side. Device is subjected to prior assemblage, according to which balls are loaded into cylindrical channels in body of lower bushing, above these springs are mounted and compressed as needed via screwed stops. Lower pressurizing elements are mounted at outer shelf, onto upper portion of lower bushing upper bushing is screwed along thread, though without compression of lower pressurizing elements. In such preassembled state device with its inner longitudinal channel of lower bushing is placed on operation column through its upper end and lowered into inter-column space of well mouth until outer shelf of upper bushing is supported by upper end of conductor. Then upper pressurizing element is mounted in ring recess on inner shelf on the side of upper end of upper bushing. After that replacing flange is screwed below mouth armature onto upper end of upper bushing of device body. Due to full exclusion of welding operations, higher industrial safety of operations at mouths of oil and gas wells during pressurization of inter-column space between conductor and operation column of well is provided for.;EFFECT: lower laboriousness, lower costs, higher safety.;2 cl, 1 dwg
机译：领域：石油和天然气工业;方法：包括在嘴电枢安装位置的高度处切割导体，并在不低于嘴电枢法兰平面的水平处切割操作柱。为了实现该方法，制造了一种具有用于保持和支撑操作柱和加压元件的元件的装置。装置由上下两个阶梯形衬套组成，这些衬套通过螺纹相互连接。上套管由上端的外螺纹制成，下端的内螺纹用于与下套管的连接，导线架上端的外架子和导线内径的架子的外径均小于架子。在衬套内部的上端形成一个环形凹槽，并形成一个带有内部搁板的环形槽，用于上部增压元件。在衬套主体的架子下方，形成了一个径向通孔，用于通过支管和锁定工具将后柱空间连接到压力计。下套管由外部架子制成，在该架子下面，其外部直径用于内部导体直径，内部纵向通道用于操作柱的外部直径。用于支撑和支撑操作柱的元件以不小于三个圆柱形通道的形式在下部衬套的下部主体中制成，围绕衬套以一定角度从外侧向衬套的纵轴的内侧进入内部，其下部开口端通道输出到衬套的内部纵向通道中。将球装入倾斜的圆柱形通道中，并在上侧将其弹簧加载。装置需要进行预先组装，根据这些装置，将球装入下部衬套主体中的圆柱形通道中，在这些弹簧上方安装并根据需要通过螺纹挡块压缩。下部增压元件安装在外部架子上，下部衬套的上部沿螺纹拧紧，尽管下部增压元件没有压缩。在这样的预组装状态下，具有下部套管的内部纵向通道的装置通过下部套管的上端放置在操作柱上，并下降到井口的柱间空间中，直到上部套管的外层架被导体的上端支撑。然后，将上部加压元件安装在上部衬套上端侧的内层架上的环形凹槽中。之后，将更换法兰在衔铁下方拧到设备主体上套管的上端。由于完全排除了焊接操作，因此在导体与井的操作柱之间的柱间空间加压期间，提高了油气井口操作的工业安全性;效果：降低了劳动强度，降低了成本，提高了安全性。 ; 2 cl，1载重吨

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