阅读说明：本技术 一种自升式钻井平台精就位过程姿态调整方法 (Posture adjusting method for self-elevating drilling platform in precise positioning process ) 是由 张宝平 付建民 徐鲲 郭家 程龙 汤柏松 郭娜 张弘 赵杰 邸毅峰 符仁杰 佟 于 2021-08-10 设计创作，主要内容包括：本发明提供一种自升式钻井平台精就位过程姿态调整方法,启动激光雷达,激光雷达开始对生产平台凸出物标志点进行监测,实时记录相对距离、船体运动方位、速度,并将实时记录的数据发给便携式工作站进行数据处理和训练；便携式工作站对收集到的数据进行训练后,形成调整指令,并将上述调整指令发送至锚机收放系统,锚机收放系统对锚链拉力和角度进行调整；锚机收放系统调整完毕后,将调整情况反馈给便携式工作站,实时显示船体姿态控制情况和安全距离把控情况,实现自升式钻井平台姿态调整,最终达到符合就位设计要求。本发明方法能够对防碰关键数据实时在线监测,降低防碰风险；本发明方法能够实现收放锚精准化,有利于船体姿态控制。(The invention provides a posture adjustment method for a self-elevating drilling platform in a precise positioning process, which comprises the steps of starting a laser radar, monitoring a production platform projection mark point by the laser radar, recording the relative distance, the movement direction and the movement speed of a ship body in real time, and sending the data recorded in real time to a portable workstation for data processing and training; training the collected data by the portable workstation to form an adjusting instruction, and sending the adjusting instruction to an anchor machine retracting system, wherein the anchor machine retracting system adjusts the tension and the angle of the anchor chain; after the windlass retraction system is adjusted, the adjustment condition is fed back to the portable workstation, the attitude control condition and the safe distance control condition of the ship body are displayed in real time, the attitude adjustment of the self-elevating drilling platform is realized, and finally the design requirement of being in place is met. The method can monitor the collision prevention key data on line in real time, and reduce collision prevention risks; the method can realize the precision of the retraction and the anchoring, and is beneficial to the control of the attitude of the ship body.)

1. A self-elevating drilling platform fine positioning process attitude adjusting method is characterized by comprising the following steps: the method comprises the following steps:

step 1, uniformly arranging laser radars at collision prevention key points at the tail part of a self-elevating drilling platform, wherein the laser radars are used for detecting various collision prevention data at the collision prevention key points in real time;

step 2, installing anchor machine tension sensors at each anchor machine of the self-elevating drilling platform, wherein the anchor machine tension sensors are used for detecting data such as the tension magnitude and the angle of an anchor chain in real time;

step 3, installing a portable workstation in a central control room of the self-elevating drilling platform, wherein the portable workstation is connected with a laser radar, an anchor machine tension sensor and an anchor machine retraction system through a network;

step 4, starting the laser radar, monitoring the production platform protrusion mark points by the laser radar, recording the relative distance, the ship movement direction and the speed in real time, and sending the data recorded in real time to the portable workstation for data processing and training;

step 5, training the data collected in the step 4 by the portable workstation to form an adjusting instruction, sending the adjusting instruction to an anchor machine retracting system, and adjusting the tension and the angle of the anchor chain by the anchor machine retracting system;

step 6, after the adjustment of the windlass retraction system is finished, feeding the adjustment condition back to the portable workstation, displaying the attitude control condition of the ship body and the safe distance control condition in real time, realizing the attitude adjustment of the self-elevating drilling platform and finally meeting the in-position design requirement;

and 7, if the in-position complex situation occurs and the in-position design requirement cannot be met, the self-elevating drilling platform moves back to the most initial position, and the steps 1 to 6 are repeated, so that the aim of adjusting the posture of the self-elevating drilling platform is fulfilled finally.

2. The method for adjusting the attitude of the self-elevating drilling platform in the precise positioning process according to claim 1, wherein the method comprises the following steps: in step 1, the anti-collision key points are obtained by training the in-position big data and are the basis for laser radar arrangement.

3. The method for adjusting the attitude of the self-elevating drilling platform in the precise positioning process according to claim 1, wherein the method comprises the following steps: in step 4, the production platform protrusion mark points are objects which are easy to track by adopting a laser radar, the markers are bound on the side, which is easy to collide, of the protrusion to mark, and the objects which are easy to track by the laser radar can adopt prisms.

4. The method for adjusting the attitude of the self-elevating drilling platform in the precise positioning process according to claim 1, wherein the method comprises the following steps: in step 5, the anchor machine retracting system can also send an anchor retracting operation instruction to the anchor machine according to data recorded by the anchor machine tension sensor after data processing of the portable workstation, and further control the anchor machine retracting system to carry out operation type adjustment.

5. The use of the fine positioning process attitude adjustment method of a jack-up rig according to any one of claims 1-4 in fine positioning work of the jack-up rig.

Technical Field

The invention relates to the technical field of offshore oilfield self-elevating drilling platform precise in-place operation, in particular to a method for adjusting the posture of a self-elevating drilling platform during precise in-place operation.

Background

With the implementation of the seven-year action plan of the national energy agency, the offshore oil field exploration and development strength is increased by the medium sea oil, and most offshore oil and gas field development in offshore China is completed through the operation of a self-elevating drilling platform. The self-elevating drilling platform is a high-risk and large-scale combined operation, the safe distance is controlled to be more important in the precise positioning process, especially when the safe distance between the drilling platform and the production platform is less than 2 meters or even less than 1 meter, the control of the position of a ship body is realized by retracting four anchors, namely the posture of the ship body is kept by the tension of 4 anchors.

When the attitude of the existing self-elevating drilling platform is adjusted, the captain commands each anchor machine operator according to the safety distance data provided by the positioning personnel, and the adjustment of the tension angle and the size of the anchor is realized by operating the anchor machine, so that the attitude of a large facility is adjusted.

Since safe distance monitoring is only a measurement between two single points and is a manual observation; in addition, the anchor machine is manually operated and is limited by personal experience. Communication means falls to the side, gives operating personnel at the captain and receive and release the anchor machine operation back of putting again, and the hull has taken place certain displacement and has drawn close to production platform again because inertia, has increased the collision risk, therefore urgently needs a new method to realize all-round, real-time safe distance monitoring and can intelligent assign and receive and release anchor operating command, receive and releases the anchor in real time, realizes the butt joint process of taking one's place and prevents bumping control, guarantees marine large-scale facility and the operation safety of taking one's place.

Disclosure of Invention

The method overcomes the defects in the prior art, the safety distance monitoring is limited by personal experience, communication means are too good, the hull inertia is easy to cause collision and the like, and the posture adjustment method for the self-elevating drilling platform in the precise positioning process is provided; the method can realize the precision of the retraction and the anchoring, and is beneficial to the control of the attitude of the ship body.

The purpose of the invention is realized by the following technical scheme.

A posture adjusting method for a self-elevating drilling platform in a precise positioning process is carried out according to the following steps:

step 1, uniformly arranging laser radars at collision prevention key points at the tail part of a self-elevating drilling platform, wherein the laser radars are used for detecting various collision prevention data at the collision prevention key points in real time;

step 2, installing anchor machine tension sensors at each anchor machine of the self-elevating drilling platform, wherein the anchor machine tension sensors are used for detecting data such as the tension magnitude and the angle of an anchor chain in real time;

step 3, installing a portable workstation in a central control room of the self-elevating drilling platform, wherein the portable workstation is connected with a laser radar, an anchor machine tension sensor and an anchor machine retraction system through a network;

step 4, starting the laser radar, monitoring the production platform protrusion mark points by the laser radar, recording the relative distance, the ship movement direction and the speed in real time, and sending the data recorded in real time to the portable workstation for data processing and training;

step 5, training the data collected in the step 4 by the portable workstation to form an adjusting instruction, sending the adjusting instruction to an anchor machine retracting system, and adjusting the tension and the angle of the anchor chain by the anchor machine retracting system;

step 6, after the adjustment of the windlass retraction system is finished, feeding the adjustment condition back to the portable workstation, displaying the attitude control condition of the ship body and the safe distance control condition in real time, realizing the attitude adjustment of the self-elevating drilling platform and finally meeting the in-position design requirement;

and 7, if the in-position complex situation occurs and the in-position design requirement cannot be met, the self-elevating drilling platform moves back to the most initial position, and the steps 1 to 6 are repeated, so that the aim of adjusting the posture of the self-elevating drilling platform is fulfilled finally.

In step 1, the anti-collision key points are obtained by training the in-position big data and are the basis for laser radar arrangement.

In step 4, the production platform protrusion mark points are objects which are easy to track by adopting a laser radar, the markers are bound on the side, which is easy to collide, of the protrusion to mark, and the objects which are easy to track by the laser radar can adopt prisms.

In step 5, the anchor machine retracting system can also send an anchor retracting operation instruction to the anchor machine according to data recorded by the anchor machine tension sensor after data processing of the portable workstation, and further control the anchor machine retracting system to carry out operation type adjustment.

The invention has the beneficial effects that: the method can monitor the collision prevention key data on line in real time, and reduce collision prevention risks; the method can realize the precision of the anchor retraction and release, and is beneficial to the attitude control of the ship body; the portable workstation processes the anti-collision data in real time and sends out an adjusting instruction, and in-place safety risk control is achieved.

Drawings

FIG. 1 is a schematic diagram of the operation of the present invention;

FIG. 2 is an initial state diagram according to the second embodiment;

FIG. 3 is a state diagram after completion of posture adjustment according to the second embodiment;

FIG. 4 is a diagram of the initial state of the embodiment;

FIG. 5 is a state diagram after completion of the three-pose adjustment of the embodiment;

for a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples.

Example one

A posture adjusting method for a self-elevating drilling platform in a precise positioning process is carried out according to the following steps:

step 1, initially positioning a self-elevating drilling platform at a position 50 meters away from a target production platform, namely the initial position;

step 2, after the anchor head is connected with the tug, anchoring to a designed point position, wherein the anchoring angle is generally 45 degrees to the center line of the ship body, the length of the anchor chain is 600 meters, and an anchor machine tension sensor is arranged at the anchor machine;

step 3, gradually approaching the self-elevating drilling platform to the production platform by placing two front anchors and retracting two rear anchors;

step 4, placing laser radars with different numbers on projections at the tail of the self-elevating drilling platform at a position 10 meters away from the production platform;

step 5, binding an optical prism on each projection of the in-position vertical surface of the production platform;

step 6, tracking and correcting the prism by using a laser radar;

step 7, forming a special network by the laser radar, the anchor machine tension sensor, the anchor machine retraction system and the portable workstation;

step 8, continuously receiving two rear anchors, placing two front anchors, processing the tension magnitude and angle of the tension sensor of the anchor machine and the monitoring data of the laser radar by the portable workstation to form a new adjusting instruction, and continuously adjusting the position and the posture of the ship body;

and 9, reaching the final in-position, and finishing the posture adjustment when the safe distance meets the requirement.

Example two

The self-elevating drilling platform offshore oil 921 is in place on a BZ26-3-A platform, the offshore oil 921 is in place initially at a position 80 meters away from the BZ26-3-A platform after navigation, the mud is filled into the platform by 0.5-1.0 meter, and the heading is close to the in-place set heading;

4 anchors are thrown to the anchor head positioning point position by the auxiliary tug according to the design length, and the included angles between the 4 anchors and the center line of the boat body are respectively 45 degrees at the left front anchor, 30 degrees at the right front anchor, 45 degrees at the left rear anchor and 45 degrees at the right rear anchor. The length of the anchor chain is 700-800 meters, and as shown in fig. 2, 4 anchor machines are provided with anchor machine tension sensors;

the left rear anchor and the right rear anchor are collected, the left front anchor and the right front anchor are placed, and the offshore oil 921 gradually approaches to the BZ26-3-A platform;

placing laser radars with different numbers on stern projections of the marine oil 921 at a distance of 10 meters from the BZ26-3-A platform, wherein the placing positions and the number are determined according to a big data system in place;

optical prisms are bound at the BZ26-3-A in-position side elevation three-layer deck rail and in-position elevation protrusions;

the laser radar, the anchor machine tension sensor, the anchor machine retraction system and the portable workstation form a special network;

continuing to receive and release the anchor, tracking the optical prism by the laser radar, recording parameters such as displacement speed, direction and angle of the ship body, transmitting the parameters to a portable workstation for processing, issuing an adjusting instruction to an anchor machine by the portable workstation, monitoring the magnitude and angle of tension by a tension sensor of the anchor machine at any time, and comprehensively adjusting the safety distance, the position of the ship body and the heading;

and when the final designed in-place position of the BZ26-3-A platform is reached, the safe distance meets the design requirement, and the posture adjustment is completed, as shown in figure 3.

EXAMPLE III

The self-elevating drilling platform Bohai sea twelve-number is subjected to navigation, primary positioning is carried out at a position 100 meters away from the CFD11-1-WGPA platform under the traction of a main tug, 1.0 meter of mud is put into the platform, a submarine pipe cable is noticed, and the heading is close to the positioning and the heading is set;

4 anchors are thrown to the auxiliary tug, the positions of anchor head positioning points are thrown according to the trend of the submarine pipe cable and the design length, and the included angles between the 4 anchors and the center line of the ship body are respectively 15 degrees for the left front anchor, 65 degrees for the right front anchor, 45 degrees for the left rear anchor and 45 degrees for the right rear anchor. The length of the anchor chain is 500-600 meters, and as shown in fig. 3, 4 anchors are provided with anchor machine tension sensors;

collecting a left rear anchor and a right rear anchor, placing a left front anchor and a right front anchor, and gradually approaching a Bohai sea No. twelve to a CFD11-1-WGPA platform;

placing a certain amount of laser radars on a Bohai sea twelve-stern projection at a distance of 15 meters from the CFD11-1-WGPA platform, wherein the placing positions and the number are determined according to an in-position big data system;

optical prisms are bound at the CFD11-1-WGPA in-position side elevation three-layer deck rail and in-position elevation protrusions;

forming a special network by the laser radar, the anchor machine tension sensor, the anchor machine retraction system and the portable workstation;

continuing to receive and release the anchor, tracking the optical prism by the laser radar, recording parameters such as displacement speed, direction and angle of the ship body, transmitting the parameters to a portable workstation for processing, issuing an adjusting instruction to an anchor machine by the portable workstation, monitoring the magnitude and angle of tension by a tension sensor of the anchor machine at any time, and comprehensively adjusting the safety distance, the position of the ship body and the heading;

and (5) reaching the final design in-position of the CFD11-1-WGPA platform, wherein the safe distance meets the design requirement, and the attitude adjustment process is completed, as shown in figure 5.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.