| This paper proposes a robust feature tracker based on an eecient outlier rejection scheme, suitable for feature tracking in subsea video sequences. We extend the Shi-Tomasi-Kanade scheme by introducing a technique for rejecting spurious features. We employ a simple and ee-cient outlier rejection rule, called X84, and prove that its theoretical assumptions are satissed in the feature tracking ...

The changes of the seabed environment caused by a natural disaster or human activities dramatically affect the life span of the subsea buried cable. It is essential to track the cable route in order to inspect the condition of the buried cable and protect its surviving seabed environment. The magnetic sensor is instrumental in guiding the remotely-operated vehicle (ROV) to track and inspect the...

Underwater pipeline inspection is an important topic in off-shore subsea operations. Remotely operated vehicles (ROVs) can play role multiple application areas including military, ocean science, aquaculture, shipping, and energy. However, using ROVs for not cost-effective, the fixed leak detection sensors mounted along have limited precision. Although cost be significantly reduced by applying a...

Crude oil, the world’s major source of energy, is obtained from earth as a Newtonian fluid and needs to be transported refineries for further processing. Pipeline transport has proven most efficient, environmental-friendly cost effective all modes crude oil transportation subsea production sites. However formation deposition waxes (mainly paraffinic asphaltenic components) along pipelines remai...

The development and implementation of new technology within the execution schedule and finance model of a deepwater subsea project requires attention to design detail, and a culture of meticulous qualification and verification practice. Challenges faced by project leadership and project teams occur in the merging of new technology product(s) into the timeline allocated for delivering the more c...

This paper investigates the use of underwater acoustic sensor networks (UASNs) for subsea asset monitoring. In particular, we focus on cases involving deployment with line topologies, e.g., monitoring oil and gas pipelines. The Linear Transmit Delay Allocation MAC (LTDA-MAC) protocol facilitates efficient packet scheduling in linear UASNs without clock synchronization at nodes. It is based real...

The development, design and selection of subsea petroleum production equipment and facilities are critical activities, as the decisions made will impact the success and profitability of the project. Technical, economic and government regulations are some of the factors that need to be evaluated in order to contract subsea services and procurement activities. Pre-studies need to be conducted to ...

The work develops a redundant software system for subsea blowout preventers, including control logics, human-machine interface (HMI) programs, remote access and redundant databases in order to meet the high reliability requirement of subsea drilling. The Bayesian networks (BN) for control logics, HMI programs and redundant databases are built and then the whole BN are established. The quantitat...