Abstract
In order to verify the functionality and evaluate the structural capacity for subsea equipment simultaneously, a synchronous test platform was established, which consists of the test setup part and the data measurements part. Based on this platform, a test was conducted on a subsea wellhead connector to illustrate the test process and principle. A numerical calculation using a developed three-dimensional finite element model was performed to compare with the test data. The results of numerical calculation and test have great good agreements. For further application, this synchronous test platform could be used for performance study of the subsea equipment under cyclic load and variable load. This paper is also bringing promotional values for other subsea device with similar and even more complex working condition.
Highlights
Subsea equipment is commonly used for deepwater oil and gas exploration and development, such as subsea Xmas tree, subsea wellhead, and subsea blowout preventer (BOP)
Montgomery et al [5] carried out a failure analysis of the subsea BOP experiences external hydrostatic pressure and well pressure simultaneously
Cai et al [8] studied the load and resistance factor design of pressure vessel for subsea blowout preventers. These previous works have left issues unresolved: (1) no enough experimental work was embedded in the calculation and analysis since the test data is the foundation towards the design and application of the subsea equipment; (2) the external hydrostatic pressure test and the functionality verification test were not conducted simultaneously [9]
Summary
Subsea equipment is commonly used for deepwater oil and gas exploration and development, such as subsea Xmas tree, subsea wellhead, and subsea blowout preventer (BOP). Cai et al [8] studied the load and resistance factor design of pressure vessel for subsea blowout preventers. These previous works have left issues unresolved: (1) no enough experimental work was embedded in the calculation and analysis since the test data is the foundation towards the design and application of the subsea equipment; (2) the external hydrostatic pressure test and the functionality verification test were not conducted simultaneously [9]. The work presented in this paper commenced with a detailed introduction of a synchronous test platform for functionality verification and structural capacity evaluation of the subsea equipment. This article has greater promotional value for other subsea device with similar and even more complex working condition
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