CN-122009947-A - Door type derrick mounting method for drilling platform

CN122009947ACN 122009947 ACN122009947 ACN 122009947ACN-122009947-A

Abstract

The invention discloses a door type derrick installation method for a drilling platform, which comprises the steps of firstly carrying out sectional design on a door type derrick according to a drawing of the door type derrick and a preset elevation sectional standard to obtain a door type derrick upper section and a door type derrick lower section, carrying out processing on the door type derrick upper section and the door type derrick lower section to form a door type derrick assembly, sequentially installing auxiliary equipment on the door type derrick assembly to achieve a hoisting state, and finally hoisting the door type derrick assembly to a horizontal state through hoisting equipment, and then hoisting the door type derrick upper section and lowering the door type derrick lower section until the door type derrick assembly is in a vertical state, so as to finish the installation of the door type derrick. The invention solves the problems of unstable time and high safety risk of installing the portal derrick on the drilling platform in the prior art.

Inventors

QIAO XIAOFENG
ZHAO TAO
WANG HONGCHUAN
HUI XIAOYING
CAO LITIAN
LI XUDONG

Assignees

宝鸡石油机械有限责任公司
中国石油天然气集团有限公司

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (9)

1. The door type derrick installation method for the drilling platform is characterized by comprising the following steps of: Step 1, according to a drawing of a door type derrick, carrying out sectional design on the door type derrick according to a preset elevation sectional standard to obtain an upper section (1) of the door type derrick and a lower section (3) of the door type derrick; Step 2, processing and fixing lifting lugs on the upper section (1) of the door type derrick and the lower section (3) of the door type derrick; Step 3, horizontally placing the upper section (1) of the door type derrick and the lower section (3) of the door type derrick on a supporting tool (4) to be mutually connected and fixed to form a door type derrick assembly; Step 4, sequentially installing auxiliary equipment on the door type derrick assembly to achieve a hoisting state; and 5, through hoisting equipment, hoisting the door-shaped derrick assembly to be horizontal, lifting the upper section (1) of the door-shaped derrick, and lowering the lower section (3) of the door-shaped derrick until the door-shaped derrick assembly is in a vertical state, and fixing the bottom of the lower section (3) of the door-shaped derrick to finish the installation of the door-shaped derrick.
2. The method for installing the portal derrick for the drilling platform according to claim 1, wherein in the step 1, the portal derrick is designed in a segmented mode according to a preset elevation segmentation standard according to the drawing of the portal derrick, specifically, the portal derrick is designed in a segmented mode according to the preset elevation segmentation standard according to the drawing of the portal derrick, so that the elevation and the weight of each portal derrick upper section (1) and each portal derrick lower section (3) meet the bearing and hoisting elevation requirements of hoisting equipment.
3. The method for installing the portal derrick for the drilling platform according to claim 1, wherein in the step 2, the upper section (1) of the portal derrick and the lower section (3) of the portal derrick are machined and fixed, specifically, lifting lugs are fixed at the top end position of the upper section (1) of the portal derrick through welding, and lifting lugs are fixed at the position, close to the bottom, of the lower section (3) of the portal derrick in the lateral direction through welding.
4. The method for installing a portal derrick for a drilling platform as claimed in claim 1, wherein the step 3 comprises the steps of: S301, fixedly connecting a door-shaped derrick upper section (1) and a door-shaped derrick lower section (3) through a connecting block (2) to form a single side door-shaped derrick, wherein the bottom of the door-shaped derrick upper section (1) and the top of the door-shaped derrick lower section (3) in the single side door-shaped derrick are oppositely arranged; s302, repeating the step S301 to obtain a pair of unilateral portal frames, and horizontally placing the lateral directions of the unilateral portal frames on the surface of a supporting tool in a opposite mode; S303, connecting the middle parts of the opposite single-side door type derricks with each other by adopting a connecting beam (5), wherein the bottoms of the single-side door type derricks at the two sides are connected with a fixed tool connecting rod (6) through bolts; S304, the tops of the unilateral portal frames on the two sides are connected with each other through a connecting frame (7) to form a portal frame assembly.
5. The portal derrick installation method for a drilling platform as claimed in claim 4, wherein both ends of the connecting beam (5) and the connecting frame (7) are fixedly connected with the corresponding unilateral portal derrick by bolts, respectively.
6. The method for installing the portal derrick for the drilling platform according to claim 1, wherein in the step 4, auxiliary equipment is sequentially installed on the portal derrick assembly to achieve a hoisting state, and the auxiliary equipment specifically comprises a lifting oil cylinder (9), a guide pulley (8), a base plate retracting guide pulley (10), a high-pressure vertical pipe manifold (12), a hydraulic unit (11), a large clamp counterweight (13), a drilling steel wire rope (14) and accessories; And when the auxiliary equipment is installed, the auxiliary equipment is installed sequentially according to the sequence of the large piece before the small piece, and a corresponding supporting tool 4 is arranged below the auxiliary equipment after the auxiliary equipment is installed.
7. The method of installing a portal frame for a drilling platform of claim 6, wherein the accessory comprises a light, a camera, a cable.
8. The method for installing a portal derrick for a drilling platform as claimed in claim 1, wherein the step 5 comprises the steps of: S501, connecting a top lifting rope (15) fixed at one end of a lifting beam (17) with a lifting lug fixed on an upper section (1) of the door-type derrick, and connecting a tail lifting rope (16) fixed at the other end of the lifting beam (17) with a lifting lug fixed on a lower section (3) of the door-type derrick; S502, hanging a hanging beam hanging rope (18) fixed on a hanging beam (17) on a hanging hook of a hanging device, and starting the hanging device to horizontally hang a door type derrick assembly to a rotating height; S503, tightening the top lifting rigging (15) to lift the upper section (1) of the door type derrick, and simultaneously releasing the tail lifting rigging (16) to lower the lower section (3) of the door type derrick until the door type derrick assembly is in a vertical state; s504, fixing the lower end of the door type derrick assembly, and dismantling the fixed tool connecting rod (6) to finish the installation of the door type derrick.
9. The portal derrick installation method for a drilling platform as claimed in claim 8, wherein the rotation height is a distance from a midpoint between a lifting lug on the portal derrick upper section (1) and a lifting lug connecting line on the portal derrick lower section (3) to a bottom end of the portal derrick assembly.

Description

Door type derrick mounting method for drilling platform Technical Field The invention belongs to the technical field of offshore drilling equipment, and particularly relates to a door-type derrick mounting method for a drilling platform. Background In operations such as petroleum drilling and mining, the portal derrick can be used as an important component of a lifting system, and lifting and lowering of pipes such as drill pipes, oil pipes, casings and various tools can be realized through equipment such as winches and the like. The device can bear larger weight and load, and ensures high efficiency and safety in the operation process. At present, the door type derrick adopts vertical sectional high-altitude assembly from bottom to top, and a plurality of people are required to sit on the high-altitude operation vehicle for installation. The installation process is basically carried out at high altitude and can not be operated in parallel, and the installation process requires the assistance of a crane and an overhead working truck at any time. The method has the advantages of low installation efficiency, high cost and high safety risk of high-altitude operation. When the portal derrick is installed on the drilling platform, if the vertical bottom-up segmentation method is adopted, firstly, hoisting equipment with enough hoisting capacity is needed for the drilling platform, and secondly, factors such as weather conditions and sea conditions during operation are considered, so that the hoisting time of the portal derrick is uncertain, and the production period can be prolonged with great probability. Moreover, hoisting equipment resources on the drilling platform are usually tense, hoisting equipment is required to be used for a long time for hoisting the portal derrick, so that the working efficiency of other required hoisting equipment is reduced, and meanwhile, the portal derrick is required to be subjected to high-altitude operation by multiple persons in the installation process, and the safety risk of long-time high-altitude operation at sea is high. Disclosure of Invention The invention aims to provide a portal derrick installation method for a drilling platform, which solves the problems of unstable time and high safety risk of installing the portal derrick on the drilling platform in the prior art. The technical scheme adopted by the invention is that the door type derrick mounting method for the drilling platform specifically comprises the following steps: step 1, according to a drawing of a door-shaped derrick, carrying out sectional design on the door-shaped derrick according to a preset elevation sectional standard to obtain an upper section of the door-shaped derrick and a lower section of the door-shaped derrick; step 2, processing and fixing lifting lugs on the upper section of the door type derrick and the lower section of the door type derrick; step 3, horizontally placing the upper section of the door type derrick and the lower section of the door type derrick on a supporting tool, and mutually connecting and fixing to form a door type derrick assembly; Step 4, sequentially installing auxiliary equipment on the door type derrick assembly to achieve a hoisting state; And 5, through hoisting equipment, the bottom of the lower section of the door-type derrick is fixed by adopting a mode of hoisting the upper section of the door-type derrick to be horizontal, lifting the upper section of the door-type derrick and lowering the lower section of the door-type derrick until the door-type derrick is in a vertical state, so that the installation of the door-type derrick is completed. The present invention is also characterized in that, In the step 1, according to the drawing of the portal derrick and the preset elevation segmentation standard, the portal derrick is segmented and designed, specifically, according to the drawing of the portal derrick and the preset elevation segmentation standard, the portal derrick is segmented and designed, so that the elevation and the weight of the upper section of each portal derrick and the lower section of the portal derrick meet the bearing and hoisting elevation requirements of hoisting equipment. In the step 2, the upper section of the door type derrick and the lower section of the door type derrick are processed and fixed with lifting lugs, wherein the lifting lugs are fixedly arranged at the top end positions of the upper section of the door type derrick through welding, and the lifting lugs are fixedly arranged at the positions, close to the bottom, of the side directions of the lower section of the door type derrick through welding. The step3 specifically comprises the following steps: S301, fixedly connecting an upper section of a door-shaped derrick and a lower section of the door-shaped derrick through a connecting block to form a single side door-shaped derrick, wherein the bottom of the upper section of the door-shaped derrick and the top of the l