SU375369A1 - EQUIPMENT WELLS TILES WITH PARALLEL - Google Patents

Description

one

The invention relates to the oil industry and, in particular, to the equipment of the wellhead during the simultaneous and separate operation of oil and gas wells.

Well-known wellhead equipment with a parallel suspension of pipes, including a tube holder of the first row of pipes, a tube holder of a second row of pipes with flanges, a coil with flanges, a sealing nipple.

Known equipment may provide a suspension of either 60x60 or 73X48 pipes, since the suspension of another combination of pipes necessitates the displacement of the passages of the suspension valves and the pipes themselves or the bending of the pipes upon entering the well.

The proposed equipment is characterized in that the upper flange of the coil is placed eccentrically relative to the axis of the coil, and the lower flange of the second row hanger support eccentrically relative to the axis of the second hanger tube holder.

This makes it possible to carry out the suspension of all possible combinations of pipes without bending them.

FIG. Figure 1 shows the equipment layout with two highlighted rows of pump-compressor tubes of the same diameter (the G and 1G axes of the equipment and pipe passes are symmetrical to the O – O axis of the coil); in fig. 2-

a circuit with a second row tube holder rotated 180 ° (axes G and I are shifted to the left relative to axis O-O, which allows suspension of pipes of different diameters); on

FIG. 3 shows sections along A-A and B-B, respectively, in FIG. 1 and 2.

The equipment consists of a tube holder / second row of pipes (Christmas tree), a coil 2, a replaceable tube holder 3 of the first row of pipes, a replaceable nipple 4 and a sealing ring 5. The first row of pipes 6 is suspended from the thread of the tube holder 3, and the second row of pipes 7 on pipe holder thread. OO is the axis of the coil coinciding with the axis of the well; F-F -

the axis of the nile {it flange pipe holders 1 and the upper flange of the coil 2, shifted to the left of the axis O-O by the value of eccentricity e, EE - axis of the holders of the holders (trees) U.

Pa figs. 1 axis Е-Е coincides with axis О-О,

G and I are the axes of the first and second rows of pipes of the same diameter; in fig. 2 I and P are the axes of the first and second rows of pipes of different diameters; in fig. 3 arcs with arrows conditionally show the movement of the pipe axes at

turn around the F-F axis.

In the proposed equipment, the upper flange of the roller (tee or cross) with all the elements (the groove for the metal sealing ring and the holes under

fasteners) is made eccentrically osn coils, since the lower flange sits concentrically on the column head of the well, the upper flange of the coil is offset relative to the axis of the well. In the Christmas tree, which serves as the pipe holder of the second row of pipes, the lower flange is offset relative to the axis of the tree by the magnitude of the eccentricity of the coil flange. Due to this, when the second row row holder is rotated around the axis of the upper flange of the coil, the axis of its aisles is either symmetrical about the axis of the well (for hanging pipes of the same diameter) or shifted relative to the axis of the well by the amount of double eccentricity (for hanging pipes of different diameters), thus achieving suspension all possible

combinations of pipes without bending them at the entrance to the well.

Subject invention

Wellhead equipment with parallel pipe suspension, including a tube holder of the first row of pipes, a tube holder of a second row of pipes with flanges, a coil with flanges, a sealing nipple, characterized in that, in order to realize the possibility of hanging all possible combinations of pipes without bending them, the upper flange The coils are separate, eccentrically relative to the axis of the coil, and the lower flange of the tube holder of the second row of tubes is eccentric relative to the axis of the tube holder of the second row of tubes.

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