SU1303486A1 - Method for docking semi-submersible drilling rig and device for effecting same - Google Patents

Abstract

The invention relates to a method for docking a semi-submersible drilling rig and a device for testing this method. The purpose of the invention is to increase the safety of operation and reduce the weight and size characteristics, as well as the complexity of the method and device for docking the semi-submersible drilling rig without interrupting the main drilling operations. The method of docking a semi-submersible drilling rig (FPUB) involves its ballasting and simultaneous simultaneous etching of the core chains and building up the casing to the ascent of the subsurface IWP hulls into the surface position, after which the dock unit is fed under the FPGA for them. mutual centering is deallastrated, the semi-submersible drilling rig is raised from the water. The proposed device for docking the semi-submersible drilling rig 2 contains a ballast-driven two-part watercraft 1 with a slipway, bachn 6 and support elements 5. The watercraft is made in the form of two subsurface ones. housings 10 with stabilizing columns 9, interconnected by means of an upper overlap 3 with an edge cutout. 2 sec. f-ly, 5 ill. S (l

Description

The invention relates to shipbuilding, in particular, to a docking method of semi-submersible drilling rigs and devices for carrying out this method.

The purpose of the invention is to increase the safety of operation and reduce the weight and size characteristics, as well as reduce the complexity of the method and device for docking the semi-submersible drilling rig without interrupting the main drilling work.

FIG. 1 shows a docking device, viewed from the end of FIG. 2 - the same, top view; in fig. 3 - the same, side view; figure 4 is the same, in a ballast position when summing it under SSAP; in fig. 5 - the same in the deballated position with the SSDR on the berth.

A device for docking a semi-submersible drilling rig (FPPU) L contains its upper overlap 3 with straight 4, dock support elements 5 and towers 6. The FPP is fixed at Dourenia point with the help of koreas with horse chains 7. The drilling equipment is presented in a casing 8 consisting of tubular sections. Upper overlap 3 is associated with supporting columns 9, which, with their lower ends, are mounted on ballast-coated subsurface housings 10.

1. A docking method for a semi-submersible drilling rig (FPDR), including mutual alignment of the FPDR and a pre-ballasted docking device and raising the FPDR from the water by means of the docking device by deballating the latter, characterized in that, in order to increase safety and reduce the labor intensity during docking of the FPDR without stopping the main drilling operations, deregulating the PBU and simultaneously synchronously etching its core chains. and increasing the casing to ascend the sub surface of the PBU to the surface th position t Then, the supply device for docking under the rig, and their mutual alignment is carried out by moving

40

45

SSPU contains supporting columns 11,

associated with ballast-bearing subsurfaces are docking devices with relative housings 12. The SSU support columns, after ascending devices 9, can be made ballastable.

The method of docking the SSDR and the device for its implementation are used as follows.

Before docking, sub subsurface hulls of 12 ППБУ are debased before they surface into surface position. Device 1, previously submerged by taking ballast into its sub-bodies 10 and supporting columns 9, is brought under the surface of the FPDR. In this case, the casing 8 enters the opening 4 of the upper overlap 3, the stability of the docking device 1 is ensured by the positive The buoyancy of the towers 6. Then the dock support elements 5 center relative to the subsurface corpus 12 of the PBU. Deballistiruyu. Partly subsurface hull 10, raise the device 1 to contact it

50

, -55

For docking and contact of its supporting elements with the sub-surface PBFU hulls, the PCBU's core circuits are wrapped and the casing is expanded until the lifting of the FCU out of the water is completed. I

2. A device for docking a semi-submersible drilling rig containing a ballast-driven double-shell watercraft with a slipway deck and towers and supporting elements arranged parallel to its diametral plane, so that, in order to increase without danger of operation and reduce weight and size characteristics, as well as labor input, docking of the SSBU without interrupting the main drilling operations, the floating craft includes subsurface hulls with stabilizing columns connected between

o

five

from 0

0

supporting elements 5c subsurface buildings 12 PPBU. At the same time, loosening the tension of the core chains 7 and increasing the tubular sections of the casing, debalasting the subsurface housings 10 increase the buoyancy of the device 1 and thereby raise the PCBP on it to a height at which the waves do not reach the upper overlap 3. After wrapping the core chains, dock repair

Claims (2)

1. A docking method for a semi-submersible drilling rig (FPDR), including mutual alignment of the FPDR and a pre-ballasted docking device and raising the FPDR from the water by means of the docking device by deballating the latter, characterized in that, in order to increase safety and reduce the labor intensity during docking of the FPDR without stopping the main drilling operations, deregulating the PBU and simultaneously synchronously etching its core chains. and increasing the casing to ascend the sub surface of the PBU to the surface th position t Then, the supply device for docking under the rig, and their mutual alignment is carried out by moving  devices for docking with respect to the SSDR, after the ascent of the device 40 45 - devices for docking with respect to the SSDR, after the device is ascending 50 55 For docking and contact of its supporting elements with the sub-surface PBFU hulls, the PCBU's core circuits are wrapped and the casing is expanded until the lifting of the FCU out of the water is completed. I 2. Device for docking a semi-submersible drilling rig containing a ballast-mounted double-shell floating craft with a slipway and towers and supporting elements arranged parallel to its diametral plane, in order to improve operational safety and reduce weight and size characteristics, as well as labor input for docking Without interrupting the main drilling operations, the watercraft includes subsurface hulls with stabilizing columns connected between tees, on which the mentioned deck berths, towers and supporting elements are located, with the towers being installed Yes. The overlap is made open from one of its ends openings for the passage of casing pipes ППБУ. bbtr --V10 figure 1 D D D D P D D D D .2 Fig.Z Compiled by O. Vasilyeva Editor T. Parfenova Tehred A. Kravchuk Proofreader S. Cherni Zak 1265/22 Draw 409 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk iab., d. 4/5 Production and printing company, Uzhgorod, st. Project, 4