A method for subsea wellhead layout of tension leg platform
A tension leg platform, underwater wellhead technology, applied in drilling equipment, earthmoving, wellbore/well components, etc., can solve the problems of riser collision, collision, inability to ensure that the wellhead can accurately reach the designated position, etc. Safety, increased productivity, reduced precision requirements
Active Publication Date: 2018-07-03
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the sea conditions in the South my country Sea are complex, and the tension leg platform can only resist typhoons in situ. Using the method to design the layout of the underwater wellhead cannot guarantee that the lowered wellhead will reach the designated position accurately and the riser is likely to collide under extreme typhoon sea conditions.
[0003] Therefore, a new wellhead layout method is proposed to solve the problem that the existing underwater wellhead layout positions can only be distributed in specific discrete positions and the riser may collide in extreme sea conditions, while improving work efficiency and reducing costs
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0023] figure 1 Schematic diagram of the wellhead layout process of the medium tension leg platform, including: the determination process of the minimum wellhead spacing, the "circular" wellhead layout method, and the wellhead layout inspection method.
[0024] figure 2 Flowchart for determining the minimum distance between underwater wellheads, including: determination of the initial value of the distance between underwater wellheads, and riser collision analysis.
[0025] image 3 The projection of the wellhead layout on the middle deck and the schematic diagram of the underwater wellhead layout show that the layout of most tension leg platform deck wellheads is rectangular and has certain rules; the layout of the underwater wellhead is determined by the layout design method
[0026] Figure 4 The projection diagram of deck wellhead, underwater wellhead and riser includes: deck wellhead, underwater wellhead and riser. The riser projection is the horizontal distance betwe...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for underwater wellhead layout of a tension leg platform. The specific steps are as follows: firstly, according to the operation requirements, an underwater wellhead layout criterion is proposed; secondly, according to the layout criterion, the minimum distance between the underwater wellhead and the distance between the underwater wellhead layout and the underwater wellhead are determined. Requirements; the third is to design the underwater wellhead layout according to the specific content of the "circular" underwater wellhead layout method; the fourth is to verify whether the underwater wellhead layout is reasonable, determine the final reasonable underwater wellhead layout, and form a wellhead layout design process. In the present invention, the minimum distance between the underwater wellheads is determined on the premise that the standpipes do not collide under normal operating sea conditions and extreme sea conditions, which improves the safety of the riser operations; the positions of the underwater wellheads can be continuously distributed. When the underwater wellheads are lowered, the water The lower wellhead only needs to be within the range of the underwater wellhead position, which reduces the precise requirements for the installation position of the wellhead, improves work efficiency, and saves costs.
Description
technical field [0001] The invention relates to an underwater wellhead layout method of a tension leg platform, which belongs to the technical field of marine engineering equipment. Background technique [0002] With the rapid development of deep-water offshore oil and gas exploration and development, floating production and drilling equipment have been widely used. As one of the platforms selected for marine development, the tension leg platform generally consists of four parts: platform main body, mooring system, anchoring system, and drilling production system. , the platform body provides the pretension of the riser, supporting production, drilling equipment and other loads; the mooring system connects the platform body and the subsea anchoring system to ensure that the platform has good motion performance and controls the motion response of the platform; the anchoring system provides pullout resistance to ensure The tension leg platform has good stability and heave perf...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/00E21B43/30E21B43/01
CPCE21B19/004E21B43/01E21B43/30
Inventor 畅元江李家仪张慎颜陈国明刘秀全罗宁宋强韩彬彬
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)