SU68944A1 - Device for adjusting the landing of the base under the marine drilling - Google Patents

Description

In contrast to the known devices for adjusting the landing of the base under the sea drilling rig in the proposed device, in order to horizontally install the surface part of the base when landing the latter on the uneven relief of the seabed, the base stand in its surface; the parts are connected to a hydraulic cylinder, the piston brush of which is passed through the cavity of the strut and abuts against the seabed.

FIG. 1 shows a general view of the main section of the base of the marine drilling; in fig. 2 - hydraulic cylinder in vertical section; in fig. 3 is a section of a cylinder according to AA; in FIG. 4, 5 - cylinder control panel in two projections.

The above-water part of the base of the marine drilling rig has tubular supports 7, equipped with bashmaks 2, which serve for the initial installation on the ground. Subsequently, the sections of the base of the rig are connected to the ground by means of reinforced concrete piles, which absorb all the loads of the rig.

The proposed device for adjusting the landing of the base under the sea drilling includes hydraulic cylinders 3 (Fig. 1, 2) connected to the uprights. Each hydraulic cylinder 3 (Fig. 2) has a piston 5 with rubber rings and a rod 7.

On one side, a convex bottom 8 is welded to the cylinder. With its other end, it is fastened to the support sleeve 10, screwed onto a support 7 with three bolts 9. Two fittings 77 and 12 are on the bottom. Fitting 77 serves to connect the cylinder to the control console. The union 72 - purge.

The piston 5 has a rubber gasket 13, which is fastened with a stud 14.

Fluid pressure is transmitted to rod 7 by means of three tabs 75 of piston 5 protruding from the cover through the slots present (Fig. 3).

The rod 7, made of pipe, passes freely through the support sleeve 10 and rests against one end of the piston foot 75, and the other enters

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into the clutch W and rests against the end of the pipe passed into the cavity of the rack / and carrying the shoe 2.

The rod 7 can be fixed in the support sleeve W by means of three clamps 16 by tightening three hollow bolts 77. For this purpose, an annular groove 18 is provided in the support sleeve for the slips and bolt cutting.

The control panel (Figs. 4, 5) consists of five three-way valves 79, combined in one housing 20. The console is connected by pipelines with hydraulic cylinders 3. The fifth console crane (central) is installation and serves for the final installation of the base by connecting all four cylinders together when the individual cranes are rotated 90 °, i.e., separated from the atmosphere.

The section is installed in place of the construction of the sea base with installed and charged four cylinders connected to the control panel.

The cylinders in the cylinders and the inner tubes of the uprights are located in the lowermost positions. All taps on the control panel are closed.

When the section of the floating crane is brought into a vertical position and is brought to the installation site, all four individual cranes are opened, the floating crane is slowly bossed; The bashmak 2 sections alternately begin to contact the bottom. The buckets in the racks / using the control muffs, the inner tubes with the bachmaks 2 begin to rise either simultaneously or in turn, depending on the bottom topography.

This is detected in the water flow control panel from the cylinder alternately through the corresponding tap.

As soon as the water starts to pour out of all four taps, i.e. when all four shoes are on the bottom, all four individual taps simultaneously, using two handles, are closed. In the closed position, since the taps are three-way, all the cylinders are combined into one single system. Thereafter, the section is removed from the floating crane.

The entire weight of the section, due to the fact that the cylinders united after closing the taps in one system, is transmitted to the inner tubes of the uprights / completely evenly through the hydraulic cylinders.

The pressure indicates the gauge mounted on the remote.

Subject invention

A device for adjusting the landing of the base under the sea drilling rig, characterized in that, in order to horizontally install the surface part of the base when landing the latter on the uneven relief of the seabed, each base base in its surface part is connected to a hydraulic cylinder, the piston rod of which is passed through the stand cavity and abuts through a pipe passed through a rack cavity into the seabed.

FIG. I

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FIG. 3

FIG. four

FIG. five

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