阅读说明：本技术 利用液压千斤顶快速完成海洋平台浮托安装方法 (Method for quickly finishing floating installation of ocean platform by using hydraulic jack ) 是由 于文太 秦立成 朱绍华 王明伦 李登跃 倪红雨 徐京阔 李立涛 李新超 高嵩 杨 于 2020-03-20 设计创作，主要内容包括：本发明公开了一种利用液压千斤顶快速完成海洋平台浮托安装方法,包括以下步骤：S1：在驳船上安装千斤顶,海洋平台放置于千斤顶的活塞上；S2：伸出千斤顶的活塞使海洋平台升高至预设高度；S3：将驳船驶入导管架的槽口内并校准海洋平台与导管架的相对位置,收缩千斤顶的活塞直至释放部分海洋平台载荷至导管架上；S4：再次伸出千斤顶的活塞,以增加驳船压载使驳船下沉；S5：当海洋平台与驳船分离高度达到退船要求时,再次收缩千斤顶的活塞以进行退船,完成海洋平台与导管架的安装,本发明实现海洋平台的快速浮托,施工风险低、效率高。(The invention discloses a method for quickly finishing the floating installation of an ocean platform by using a hydraulic jack, which comprises the following steps: s1: a jack is arranged on the barge, and the ocean platform is placed on a piston of the jack; s2: the piston of the jack is extended out to enable the ocean platform to be lifted to a preset height; s3: driving the barge into the notch of the jacket, calibrating the relative position of the ocean platform and the jacket, and retracting the piston of the jack until part of the load of the ocean platform is released to the jacket; s4: extending the piston of the jack again to increase the barge ballast to sink the barge; s5: when the separation height of the ocean platform and the barge reaches the requirement of ship withdrawal, the piston of the jack is contracted again to withdraw the ship, and the installation of the ocean platform and the jacket is completed.)

1. A method for quickly finishing the floating and supporting installation of an ocean platform by using a hydraulic jack is characterized by comprising the following steps:

s1: a jack is arranged on the barge, and the ocean platform is placed on a piston of the jack;

s2: the piston of the jack is extended out to enable the ocean platform to be lifted to a preset height;

s3: driving the barge into the notch of the jacket, calibrating the relative position of the ocean platform and the jacket, and retracting the piston of the jack until part of the load of the ocean platform is released to the jacket;

s4: extending the piston of the jack again to increase the barge ballast to sink the barge;

s5: and when the separation height of the ocean platform and the barge reaches the ship withdrawing requirement, the piston of the jack is contracted again to withdraw the ship, and the installation of the ocean platform and the jacket is completed.

2. The method for quickly completing the floating installation of an ocean platform according to claim 1, wherein the barge is adjusted in position to align the legs of the ocean platform with the legs of the jacket in step S3, so as to calibrate the relative position of the ocean platform and the jacket.

3. The method for quickly completing a floating installation of an ocean platform according to claim 1 wherein the step S3 is to release 30% to 70% of the ocean platform load onto the jacket.

4. The method for quickly completing the floating installation of an ocean platform according to claim 1, wherein the preset height is higher than the height of the jacket in the step S2.

5. The method for rapidly completing the floatover installation of an ocean platform according to claim 1, wherein the anchor cables are used to control the driving distance of the barge in step S3.

6. The method for quickly completing the floating installation of the offshore platform by using the hydraulic jack according to claim 1, wherein the distance between the offshore platform and the jacket before the piston of the jack is extended in step S2 is 300 m.

7. The method for quickly completing the floating installation of the ocean platform according to claim 1, wherein the time for the piston of the jack to extend to raise the ocean platform to the preset height in step S2 is 60 min.

8. The method for quickly completing the floating installation of an ocean platform according to claim 1, wherein in the step S1, the jacks are hydraulic jacks.

Technical Field

The invention relates to the technical field of ocean platform installation, in particular to a method for quickly finishing ocean platform floating support installation by utilizing a hydraulic jack.

Background

With the great increase of petroleum resource consumption in China, the national energy strategy is greatly challenged, and the economic, effective and rapid development of offshore petroleum resources in China is of great concern. At present, as the functions of the offshore oil production platform for offshore oil development in China are more complete and the process treatment equipment is more complex, the weight of the upper module of the offshore oil production platform tends to be larger and larger.

In the past, the offshore platform carries out load transfer in a barge ballast mode, however, the installation method has low efficiency and large risk, and in order to overcome the adverse sea condition influence caused by long-term surge on the sea, the offshore platform floating support installation method which can complete load transfer in a short time and realize rapid load transfer is needed.

Disclosure of Invention

The present invention is intended to solve the above technical problems to some extent.

In view of the above, the invention provides a method for quickly completing the floating and supporting installation of an ocean platform by using a hydraulic jack, which can complete load transfer in a short time and has low construction risk and high efficiency.

In order to solve the technical problem, the invention provides a method for quickly finishing the floating installation of an ocean platform by using a hydraulic jack, which comprises the following steps: s1: a jack is arranged on the barge, and the ocean platform is placed on a piston of the jack; s2: the piston of the jack is extended out to enable the ocean platform to be lifted to a preset height; s3: driving the barge into the notch of the jacket, calibrating the relative position of the ocean platform and the jacket, and retracting the piston of the jack until part of the load of the ocean platform is released to the jacket; s4: extending the piston of the jack again to increase the barge ballast to sink the barge; s5: and when the separation height of the ocean platform and the barge reaches the ship withdrawing requirement, the piston of the jack is contracted again to withdraw the ship, and the installation of the ocean platform and the jacket is completed.

Further, in step S3, the position of the barge is adjusted to align the legs of the ocean platform with the legs on the jacket, so as to calibrate the relative position of the ocean platform and the jacket.

Further, in step S3, the 30% to 70% of the platform load is released to the jacket.

Further, in step S2, the preset height is higher than the jacket height.

Further, in step S3, the travel distance of the barge is controlled by using the anchor line.

Further, in step S2, before the piston of the jack is extended, the distance between the ocean platform and the jacket is 300 meters.

Further, in step S2, the time for the piston of the jack to extend to raise the ocean platform to the preset height is 60 min.

Further, in step S1, the jack is a hydraulic jack.

The invention has the technical effects that:

1. the floating installation of the ocean platform is completed by adopting the synergistic effect of the hydraulic jack and the barge, and the efficiency is high.

2. And the hydraulic jack is used for transferring the ocean platform load on the barge, so that the construction risk is low.

Drawings

FIG. 1 is a schematic illustration of a barge according to the invention in positional relationship with an offshore platform;

FIG. 2 is a schematic illustration of a barge according to the invention in positional relationship with a jacket;

FIGS. 3-5 are schematic views of a barge entering a jacket slot according to the invention;

FIGS. 6-7 are schematic diagrams of a process for calibrating the relative position of an ocean platform and a jacket according to the present invention;

FIGS. 8-9 are schematic views of the process of adding barge ballast to lower the barge in accordance with the present invention;

fig. 10 to 11 are schematic views of a ship retreating process according to the present invention.

Wherein, 1-barge; 2-a jack; 3-a jacket; 4-an ocean platform; 5-anchor cables; 21-a piston; 31-legs of the jacket; 41-spud legs of the ocean platform.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

As shown in fig. 2 to 11, a method for quickly completing the floating installation of an ocean platform by using a hydraulic jack comprises the following steps: s1: a jack 2 is arranged on the barge 1, and an ocean platform 4 is placed on a piston 21 of the jack 2; s2: the piston 21 of the jack 2 is extended out to lift the ocean platform 4 to a preset height; s3: driving the barge 1 into the notch of the jacket 3 and calibrating the relative position of the ocean platform 4 and the jacket 3, and retracting the piston 21 of the jack 2 until part of the load of the ocean platform 4 is released to the jacket 3; s4: the piston 21 of the jack 2 is extended again to increase the barge 1 ballast to make the barge 1 sink; s5: when the separation height of the ocean platform 4 and the barge 1 reaches the ship withdrawing requirement, the piston 21 of the jack 2 is contracted again to withdraw the ship, and the installation of the ocean platform 4 and the jacket 3 is completed.

According to the embodiment of the invention, a method for quickly finishing the floating installation of an ocean platform by using a hydraulic jack comprises the steps of prefabricating the ocean platform 4 on land, installing a jack 2 on a barge 1, enabling a piston 21 of the jack 2 to be arranged along the vertical direction, placing the ocean platform 4 on the piston 21 of the jack 2, operating the jack 2, enabling the piston 21 of the jack 2 to extend out to enable the ocean platform 4 to be lifted to a preset height, driving the barge 1 into a notch of a jacket 3 and calibrating the relative position of the ocean platform 4 and the jacket 3, contracting the piston 21 of the jack 2 until part of the load of the ocean platform 4 is released to the jacket 3, rapidly extending out the piston 21 of the jack 2 and enabling the piston 21 of the hydraulic jack 2 to carry out constant force control so as to increase the ballast of the barge 1 to enable the barge 1 to sink the barge 1, and when the separation height of the ocean platform 4 and the barge 1 generates enough vertical safety clearance, the piston 21 of the contraction jack 2 moves back quickly, the stable structure of the ocean platform 4, the jacket 3 and the barge 1 is realized, the installation of the ocean platform 4 and the jacket 3 is completed, the phenomenon that great impact force is caused by the long-term surge between the barge 1 and the jacket 3 is avoided, the ocean platform 4 and the barge 1 are separated as soon as possible, a sufficient vertical safety gap is generated, and the marine oil engineering construction method has very important significance.

Specifically, the jacks 2 are multiple and are all multiple independent hydraulic jacks distributed in a matrix manner.

Specifically, 30% of the platform 4 load to 70% of the platform load is released onto the jacket 3.

Specifically, the piston 21 of the telescopic jack 2 retreats from the ship within 1 minute, so that the ocean platform can float and support quickly, and the floating and supporting can be completed under severe sea conditions.

In particular, the ocean platform, jacks and jacket are all available to those skilled in the art.

Fig. 2 shows the barge 1 and the offshore platform 4 to be controlled at a distance of 300 meters from the jacket 3 by means of anchor lines 5.

According to the specific embodiment of the invention, the anchor machine is arranged on the deck of the barge, the anchor cables 5 are wound in the rollers of the anchor machine, the other ends of the anchor cables 5 are connected with anchors and inserted on the seabed, and when the barge moves, the front ends of the rollers firstly collect the anchor cables 5, and the rear ends place the anchor cables 5, thereby controlling the movement of the barge.

Fig. 3 shows the barge 1 entering the jacket 3 slot and passing the bow 2.2 meters over the jacket 5 meters.

Fig. 4 shows the barge 1 entering the jacket 5 slot, passing the bow 5m over the jacket 5, and completing the mooring line transfer.

As shown in fig. 6 and 7, the outer edge of the bottom of the ocean platform 4 is provided with a plurality of legs 41 of the ocean platform 4, the top of the jacket is provided with legs of the jacket corresponding to the legs 41 of the ocean platform 4 one by one, the legs 41 of the ocean platform are aligned with the legs 31 on the jacket, and the position of the barge 1 is adjusted to calibrate the relative position of the ocean platform 4 and the jacket 3.

As shown in fig. 3, 4 and 5, the predetermined height is higher than the height of the jacket 3, so as to ensure that the ocean platform 4 can move smoothly above the jacket 3.

As shown in fig. 3, the travel distance of the barge 1 is controlled by the anchor lines 5.

As shown in fig. 2, the distance between the ocean platform 4 and the jacket 3 before the piston 21 of the jack 2 is extended is 300 meters.

As shown in fig. 2, the time for the piston 21 of the jack 2 to extend to raise the ocean platform 4 to the preset height is 60 min.

As shown in fig. 1, the jack 2 is a hydraulic jack, and a transmission mechanism can be conveniently and flexibly arranged by means of connection of oil pipes.

According to the method for quickly finishing the floating installation of the ocean platform by using the hydraulic jack, the use principle is as follows:

s1, installing a plurality of jacks 2 with the pistons 21 vertically upward on the barge 1, and placing the ocean platform 4 on the pistons 21 of the jacks 2;

s2, the piston 21 of the jack 2 is extended to lift the ocean platform 4 until the height is higher than the height of the jacket 3 along the vertical direction;

s3, driving the barge 1 into the notch of the jacket 3 within 60 minutes and calibrating the relative position of the ocean platform 4 and the jacket 3, and retracting the piston 21 of the jack 2 within 1 minute until releasing 30 percent of the load of the ocean platform 4 to 70 percent of the platform load on the jacket 3;

s4, extending the piston 21 of the jack 2 to increase the ballast of the barge 1 so as to enable the barge 1 to sink;

s5: when the separation height of the ocean platform 4 and the barge 1 reaches the ship withdrawing requirement, the piston 21 of the jack 2 is quickly retracted to the zero position within 1 minute to withdraw the ship, and the installation of the ocean platform 4 and the jacket 3 is completed.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.