CN-121976509-A - Self-installation type installation method of ocean module drilling machine

CN121976509ACN 121976509 ACN121976509 ACN 121976509ACN-121976509-A

Abstract

The invention discloses a self-installation type installation method of an ocean module drilling machine, which comprises the steps of firstly, lifting a platform by constructors, assembling a first-stage small crane by using manpower and a simple tool, then, sequentially installing a second-stage crane, a third-stage crane and a fourth-stage crane with larger lifting capacity by using the installed cranes as lifting means, installing a deck fifth-stage crane serving as a platform main crane by using the fourth-stage crane, then, installing a drilling support module and a port fifth-stage crane by using the deck fifth-stage crane, and installing a starboard fifth-stage crane by using the deck fifth-stage crane as a support, and finally, completing the installation of all the rest drilling machine modules by using the combined operation of the port fifth-stage crane and the starboard fifth-stage crane. The method thoroughly gets rid of the dependence on the large-scale floating crane and the barge through the self-building hoisting capacity of the platform and the mounting logic of step-by-step hoisting, and has the advantages of low construction cost, flexible periodic arrangement, small restriction by external resources and sea conditions, and repeated use of all cranes and modules on different platforms.

Inventors

MIAO BO
ZHANG YUHUA
LEI XIANGE
LI XIAOFENG
YAN FEIHU
ZHU BENWEN
WU AIPING
SUN ZHANGUANG
WEI SHUANGHUI

Assignees

兰州兰石石油装备工程股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (8)

1. The self-installation type installation method of the marine module drilling machine is characterized in that under the condition that an external floating crane is not used, a multi-stage crane is installed and utilized step by step on a jacket platform, a rear-stage crane is installed by a front-stage crane, and finally, the installation of all drilling machine modules is completed by means of the combined operation of a starboard fifth-stage crane (6) and a port fifth-stage crane (7) built by the platform, and the method comprises the following steps: After a constructor climbs on a platform, assembling a base (101), a stand column (102), a suspension arm (103) and a pneumatic small winch (104) of the first-stage crane (1) by using manpower and a simple tool, and enabling the first-stage crane to have initial hoisting capacity; A second-stage crane (2) is installed by using the first-stage crane (1), and a base (201), a stand column (202), a suspension arm (203) and a diagonal beam (204) of the second-stage crane (2) are hoisted and assembled by using the first-stage crane (1), so that the second-stage crane (2) has working capacity; A third-stage crane (3) is installed by using the second-stage crane (2), and a bottom beam (301), a rotary table (302), an A frame (304) and a crane arm (306) of the third-stage crane (3) are hoisted and assembled by using the second-stage crane (2), so that the third-stage crane (3) has working capacity; The fourth step of upgrading to a fourth-stage crane (4), namely, after the second-stage crane (2) is disassembled by utilizing the third-stage crane (3), hoisting and assembling a bottom beam (401), a rotary table (403), an A frame (404) and a crane arm (405) of the fourth-stage crane (4), so that the fourth-stage crane (4) has working capacity; Installing a deck fifth-stage crane (5), namely hoisting and assembling a bottom beam (501), a support (502), a revolving platform (503), an A frame (504) and a segmented crane arm (505) of the deck fifth-stage crane (5) by utilizing the fourth-stage crane (4) and matching with the third-stage crane (3), so that the deck fifth-stage crane (5) has working capacity; Step six, establishing port hoisting capacity, namely dismantling a third-stage crane (3) and a fourth-stage crane (4) by utilizing the deck fifth-stage crane (5), installing a drilling support module (8) assembly, and installing a rotary table (701), an A frame (702) and a crane arm (703) of the port fifth-stage crane (7) on the assembly to enable the port fifth-stage crane (7) to have working capacity; Transferring and establishing starboard lifting capacity, namely removing temporary storage of an A frame (504), a crane arm (505), an amplitude-variable steel wire rope (506), a big hook (507) and a small hook (508) of a deck fifth-stage crane (5) by utilizing the port fifth-stage crane (7), transferring and installing a rotary table (503) to a preset position of a drilling support module (8), and assembling the temporary storage part into the starboard fifth-stage crane (6) to enable the starboard fifth-stage crane to have working capacity; and step eight, finishing the installation of double-machine combined operation, namely utilizing the port fifth-stage crane (7) and the starboard fifth-stage crane (6) to perform combined operation, and installing the rest public modules (9), the living building modules (10), the drilling equipment modules (11) and the block deck equipment modules (12).
2. The self-installing method of the ocean module drilling machine according to claim 1, wherein in the first step, the first-stage crane (1) is assembled and fixed specifically comprises the steps that constructors pull parts to a platform through hemp ropes, pneumatic small winches (104) are installed at the tail ends of the hanging arms (103) after connection of the hanging arms (103) and the base (101) and the hanging arms (103) is completed, after the assembly is pushed to the edge of the platform through manpower, the base (101) and a deck structure are bound and fixed through guide chains (105), and the pneumatic small winches (104) are supplied through a gas source pipeline (106) on a transport ship.
3. The self-installation method of the marine module drilling machine according to claim 2, wherein in the second step, the installation of the upright (202) of the second-stage crane (2) is completed by means of a temporary auxiliary upright (205), specifically, the auxiliary upright (205) is installed after the base (201) is welded in place, the force direction is changed by using a wire rope of the first-stage crane (1) through a ground pulley (207) on the base (201) and a guide pulley (206) on the top of the auxiliary upright (205), the upright (202) is hoisted in place, and then the auxiliary upright (205) is removed.
4. The self-installation method of the ocean module drilling machine according to claim 3, wherein in the third step, after the bottom beams (301) of the third-stage crane (3) are in place, welding pressing blocks are adopted to fix the bottom beams with a deck, and the total of two cable-stayed beams (305) of the third-stage crane (3) are arranged at 90 degrees and are respectively connected with the tail ends of the bottom beams (301) and the tops of the A frames (304).
5. The self-installing method of the ocean module drilling machine according to claim 4, wherein in the fifth step, in the segmented crane arms (505) of the deck fifth-stage crane (5), the inner section and the middle section are hoisted by the fourth-stage crane (4), and the outer section is hoisted by the third-stage crane (3) and is in butt joint with the middle section in the air.
6. The method for installing the ocean module drilling machine according to claim 5, wherein in the sixth step, the components of the drilling support module (8) are installed in the order from the light equipment room to the heavy equipment and then to the supporting structure, and the specific order is that an electric control room (801), an air compressor sled (802), a transformer sled (803), a foundation support 1# (804), a foundation support 2# (805), a material room 1# (806), a machine repair room (807), a material room 2# (808), a generator room 1# (809), a generator room 2# (810), a generator room 3# (811), a diesel day tank (812), a bracket 1# (813), a crane bracket 1# (814) and a crane bracket 2# (815), and the rotary table (701) of the port fifth-stage crane (7) is installed on the crane bracket 1# (814).
7. The self-installing method of the marine module drilling machine according to claim 6, wherein in the seventh step, after the common parts of the deck fifth-stage crane (5) are removed, the common parts are temporarily stored in a wellhead area of a top deck of a jacket, a rotary table (503) of the common parts is directly hoisted to a crane bracket 1# (814) of a drilling support module (8) to serve as a foundation of a starboard fifth-stage crane (6), and a variable-amplitude steel wire rope (506), a large hook (507) and a small hook (508) of the starboard fifth-stage crane (6) are used as the same set of components as the deck fifth-stage crane (5).
8. The self-installation method of the marine module drilling machine according to claim 7, wherein in the step eight, the installation of the public module (9), the living building module (10), the drilling equipment module (11) and the block deck equipment module (12) is carried out by matching and fixing the port fifth-stage crane (7) and the starboard fifth-stage crane (6) in place.

Description

Self-installation type installation method of ocean module drilling machine Technical Field The invention relates to the technical field of offshore oil drilling equipment, in particular to a self-installation type installation method of an offshore module drilling machine. Background The ocean module drilling machine is one of core equipment for offshore oil and gas resource development, is usually installed on a fixed jacket platform, and is suitable for a cluster well development mode of an offshore oil and gas field. The drilling machine adopts a modularized design, can be generally divided into a plurality of functional units such as a drilling support module, a power module, a living building module, a drilling equipment module and the like, has the advantages of convenient transportation, flexible installation, reusability and the like, and has become a main stream equipment form for offshore oil and gas exploitation in China. At present, the installation of the marine module drilling machine at home and abroad generally adopts a method of wholly hoisting a large module. The method generally divides the whole set of drilling machine into 2 to 4 large modules weighing 800 tons to 1500 tons or more, and the modules are transported to the offshore platform site by barges after assembly, outfitting and debugging of the modules are completed at the onshore construction site. When the jacket is installed, each module must be hoisted to a designated position of the jacket platform in sequence by relying on a large floating crane (usually more than 1000 tons) with large lifting capacity and a long working radius. This mode of operation, despite its mature technology and relative centralization of installation cycles, has the inherent drawbacks that are increasingly evident: First, this method relies heavily on expensive specialty engineering resources such as large floating vessels. The large floating vessels have limited global quantity, long dispatching period and extremely high lease cost, and the daily lease of the large floating vessels can reach hundreds of thousands or even tens of thousands of dollars. For many offshore oil and gas development projects, the high use cost of the floating crane directly increases the overall investment threshold of the project. Particularly, in the construction season of a plurality of projects in parallel or in the sea, the floating crane resource is in strong competition, which may cause delay of a project critical path and cause huge time and economic loss. Secondly, the construction window is severely restricted by external conditions. The large floating crane ship has extremely strict requirements on sea conditions (wave height, flow velocity and wind speed), and can be hoisted only in a limited time window of calm and calm. In sea areas with variable climates, waiting for proper weather may lead to a significant delay in the construction plan and an increase in project uncertainty. In addition, the large-scale floating crane and barge have complex operation flows of formation, positioning, anchoring and the like, and long preparation time, so that the flexibility of the construction efficiency is further reduced. Furthermore, the integral hoisting of large modules puts higher demands on the design of the platform structure. In order to withstand the impact load during hoisting and the static load after being in place, the structure of the jacket platform and the upper block must be additionally reinforced, which increases the steel consumption and the construction cost of the platform in an intangible way. Meanwhile, large-scale places and facilities matched with large-scale modules are also needed for prefabrication, transportation and loading and unloading on land, so that the deployment range of projects is limited. To overcome the above drawbacks, attempts have been made in the industry to improve, for example, the use of larger tonnage floats to reduce the number of lifts or to miniaturize the module further. However, the former further aggravates the reliance on scarce heavy resources, while the latter may lead to a dramatic increase in offshore connection effort, increased interface complexity, and prolonged overall installation cycle, which is not a fundamental solution. It is also envisaged that attempts to gradually install small cranes using the platform itself, but lacks systematic method design and practical verification, do not form a complete, viable, optimized solution in terms of how to implement the positioning of the first crane, how to safely and efficiently complete the capacity upgrades and relays between cranes, and how to organically combine with the rig module installation process. Therefore, there is an urgent need in the art for a marine modular rig installation method that can thoroughly break away from reliance on large external floating cranes. The method can utilize the conventional transport ship resources, safely, economically and