| 摘要 |
The proposed device for operation of free flowing and gas lift oil wells relates to production of gas-liquid mixtures, and particularly of gasified oil, and can be used in wells if either the productive formation flows naturally or when compressed gas is artificially supplied to lift the liquid (i.e. gas lift production) and can be made in two embodiments. In first embodiments of the device for operation of free flowing and gas lift oil wells a device for modifying of a gas-liquid flow structure is placed inside a lift tubing string employed to lift the liquid and gas, which device is made in form of, at least, one float ball valve where radius and weight of the ball are selected depending on speed of the gas-liquid flow and diameter of the ball 0.8-0.9 of inner diameter of tubes of the lift tubing string. In another embodiment a device for modifying of a structure of a gas-liquid flow placed inside a lift tubing string is made in a form of, at least, one element to form a gas-liquid flow structure-a bead that have size ratio of ds/dT<=0.9, where ds-diameter of maximum cross-section of the bead, dT-inner diameter of the lift tubing string, and the bead is stringed on the support in the form of a wireline or rod assembly and placed along the lift tubing string with opportunity of radial and axial motion. And the axial motion of the beads is admitted only within intervals between the stoppers that are fixed on the suspension support with spacing intervals between them selected depending on a current level of gas content along the lift tubing string. And the beads can be made of different geometrical shapes and from materials with the same or different specific gravity or different materials, and either solid or hollow or with a hollow filled with liquids of same or different gravity.
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