Geothermal well outflow water temperature regulator

Abstract

The invention discloses a geothermal well outflow water temperature regulator. An outer pipe loading hanger comprises an outer pipe and an outer pipe hoop which are connected in threads; a single conical surface or double-conical surface inner convex ring are arranged in the middle of the outer pipe hoop; an inner pipe stopper comprises an inner pipe and a drum-shaped rubber sleeve; an inner pipe loading hanger is an inner pipe hoop with a horn mouth at the upper part; the upper end of the inner pipe is connected with the lower end of the inner pipe hoop in threads; a giant or trapezoidal left-handed thread matched with a drilling tool thread is processed at the upper end of the straight section of the inner pipe hoop; the conical degree of the outer conical surface of the horn mouth of the inner pipe hoop is the same as that of the single conical surface or double-conical surface inner convex ring in the middle of the outer pipe hoop; the diameter of the horn mouth of the inner pipe hoop is 3-4mm less than the drift diameter of the outer pipe; the outer diameter of the straight section of the inner pipe hoop is 2-4mm less than the minimum inner diameter of the single conical surface or double-conical surface inner convex ring of the outer pipe hoop; and the maximum outer diameter of the drum-shaped rubber sleeve is 2-4mm less than the inner diameter of the outer pipe.

Description

technical field [0001] The invention relates to a special tool for geothermal well completion, in particular to a geothermal well water outlet temperature regulator capable of solving the problem of relatively low water outlet temperature or relatively small water output from the geothermal well. Background technique [0002] When geothermal wells are completed and the location of the well closure is defined, it is necessary to ensure a high outlet water temperature and a large amount of water output. This is a contradiction between the facts, and the location of the closure well is not easy to define. In addition, the gradient of geothermal temperature increase in different regions is inconsistent, and the water inflow of different geological and stratigraphic units varies greatly, which makes it more difficult to define the location of the well closure. If the location of the well closure is shallow, the water output of a single well is large, but the temperature of the wa...

AI Technical Summary

Problems solved by technology

[0002] When geothermal wells are completed and the location of the well closure is defined, it is necessary to ensure a high outlet water temperature and a large amount of water output. This is a contradiction between the facts, and the location of the closure well is not easy to define

In addition, the gradient of geothermal temperature increase in different regions is inconsistent, and the water inflow in different geological and stratigraphic units is quite different, which makes it more difficult to define the location of the well closure

If the location of the closed well is shallow, the water output of a single well will be large, but the temperature of the water will be low, which will cause the geothermal water to lose its due value; if the location of the well closure is deep, the temperature of the water output from the geothermal well will be high, but the water output will be small

Small amount of water and high temperature will also make drilling meaningless

Images