Unlocking the Potential of Complex Marginal Reservoir in Highly Mature Oil Field, XiJiang24 South China Sea

2013 ◽  
Author(s):  
Luo Donghong ◽  
Yan Zhenghe ◽  
Gao Xiaofei ◽  
Rao Zhihua ◽  
Du Ding Yu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Oil Field ◽  
China Sea

Study of Tandem Offloading System for a New Concept Spar FPSO

2014 ◽  
Author(s):  
Wei Gao ◽  
Xiaoliang Qi ◽  
Jin Wang
Keyword(s):  
South China Sea ◽  
Numerical Simulations ◽  
Model Test ◽  
South China ◽  
Time Domain ◽  
Oil Field ◽  
Hydrodynamic Performance ◽  
China Sea ◽  
Oil Storage ◽  
Tandem Offloading

A new concept Spar FPSO (Floating Production Storage and Offloading) is proposed for South China Sea deepwater oil field development integrating the advantages of the deep-draft Spar concept whose excellent stability and global performance enables dry-tree drilling and production, and the conventional ship-shaped FPSO for oil storage and offloading. This paper presents a study of the tandem offloading system for the new concept Spar FPSO. The paper will first give an overview of various offloading configurations and their characteristics for deepwater development; then a tandem offloading system similar to conventional ship-shaped FPSO is recommended for further investigation considering operational experience, safety and economical benefits. As the offloading operations are generally weather-limited, offloading environmental conditions for the study are selected based on API, ABS and South China Sea offshore operation practices. For a case study, hydrodynamic performance of the Spar FPSO in tandem offloading configuration with a shuttle tanker in 1500m water depth was investigated numerically and experimentally. Numerical simulations were conducted by means of fully coupled nonlinear time-domain analysis. The distance between the shuttle tanker and the Spar FPSO is optimized based on the relative motions of the two floaters and the hawser tension requirement of the shuttle tanker. Experimental results from model test are presented and compared with analytical time-domain simulation results. It is shown that the results of numerical simulations are consistent with the model test. The tandem offloading system demonstrates robust performance and cost-effectiveness for the proposed Spar FPSO concept.

New Installation Method for Subsea Pipelines in South China Sea

2012 ◽  
Author(s):  
Chi Chen ◽  
Kai Zhang ◽  
Tianxiao Yang ◽  
Ouyang Xiong ◽  
Qiang Tang ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Oil Field ◽  
The Other ◽  
Mooring System ◽  
Safety Zone ◽  
Mooring Lines ◽  
China Sea ◽  
The One ◽  
Subsea Pipelines

The subsea pipelines between two platforms located in South China Sea were required to be replaced. In between the two platforms is a Floating Production Storage and Offloading (FPSO) unit including the mooring system, anchors and Pipeline End Termination (PLET). The new pipelines need to run below the FPSO and the mooring lines. This paper discusses a new installation method for the subsea pipelines in South China Sea. There are technical challenges to install the new 18-km pipelines in Panyu oil field. On the one hand, it needs to ensure a 500-m radius safety zone from the FPSO. The pipeline laying vessel shall not work within the safety zone due to possible interference with anchor lines. On the other hand, the new pipelines have to run below the FPSO and the mooring lines in order to avoid potential interference with existing cable and riser system. This paper considers the existing pipeline installation methods and generates a new method to install the pipelines in South China Sea. A concept of ‘dummy pipe’ is introduced to simulate the installation operation. The paper presents a series of installation sequences including assisting the pipeline laying and pulling, accurately positioning the pipelines, and protecting the existing facility. Figures are used to illustrate the installation deployment. Messenger lines were installed to run below the FPSO. The installation process was monitored. The new pipelines were installed in the field successfully. In addition, this paper further presents some recommendation for future installation practice.

Wellbore Stability of Extended Reach Wells in an Oil Field in Sarawak Basin, South China Sea

2004 ◽  
Author(s):  
C.P. Tan ◽  
Mohd Azriyuddin Yaakub ◽  
Xi Chen ◽  
D.R. Willoughby ◽  
S.K. Choi ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Oil Field ◽  
Wellbore Stability ◽  
China Sea
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