Double-tubular-column suspension wellhead device

The utility model relates to the technical field of horizontal well production and test, in particular to a double-tubular-column suspension wellhead device for producing and testing a horizontal well. A sluice valve, a test tubular column and an upper flange four-way joint of the device are in screwed connection with one another sequentially; a screwed plug, a power liquid inlet joint, a gland short node, a suspender main body, a power liquid tubular column and the upper flange four-way joint are in screwed connection with one another sequentially; a double-tube suspender is in screwed connection with a small oil tube; the double-tube suspender is positioned on an oil tube head four-way joint; an oil tube reducing joint is in screwed connection with a large oil tube; the oil tube reducing joint is positioned on the double-tube suspender; a slip base is positioned on the suspender main body; a slip is positioned on the slip base; the slip is used for clamping and suspending continuous oil tubes; and channels