... by increased voltage or conductor cross-sections, increase the physical footprint of cable components or introduce completely new components in a dynamic cable context- Most notably a radial water barrier. Fatigue as a failure mode becomes an increasingly relevant and critical failure mode where the relevant...

... Abstract Typical deepwater wells in soft clay sites employ jet pipes as the well foundations, i.e., the jetted conductors. The jetting process during the installation of the conductors causes disturbance to the surrounding soil rendering the low axial capacity of the jetted conductors...

.... Unlike conventional jackets, some conductor guides/sleeves are modified like jacket legs, however, conductors are kept axially free to move through the sleeves. The mudmats are modified to include in the overall load-bearing capacity of the structure. The lower deck (41m × 25m) will accommodate all...

... to specific levels with water. The motion of the entrapped fluid provides damping tuned to the primary structural period. The main column serves five functions: It serves as the primary load path for supporting topsides loads It houses one of the conductors It houses the main pile...

... Abstract In 2022, a Hydraulic Workover Unit (HWU), operating in Gulf of Mexico, toppled while being erected on a caisson. Photographs taken on site suggest that conductor casing lost stability, while submitted to weight of the HWU, combined with environmental loads. Since HWU activity...

... deviate template structure slow varying displacement upstream oil & gas conductor equinor wellhead lift artificial intelligence wellhead system camera kit accelerometer-based monitoring computer vision well growth monitoring offshore technology conference prototype Introduction...

... Abstract Jetting is a widely applied technique for conductor installation, which allows great time savings in comparison to conventional drilling and cementing of the conductor. According to Kan et al. (2018 ), the key parameters for a successful jetting operation are: pump rate, ratio of bit...

... Abstract This paper describes the design, construction and operation of a test rig for jetted conductors in soft clays. The rig was designed to produce repeatable tests under controlled conditions to evaluate the influence of operational jetting procedures on the conductor performance just...

...; 8 main piles 54"ø; 6 torsion piles 72"ø; 58 conductors 22"ø & 26"ø. Figure 2 shows the overall Lena configuration and major components [ 1 , 2 ]. Figure 3 provides an isometric view of the Lena tower structure framing. Figure 4 illustrates the tower structural support system...

..., the problem was idealized by means of a structure composed by non-linear springs with hysteretic behavior that represent the soil-structural interaction and linear springs representing the other strings. In the present paper, a coupled multi-string model for subsea wells that account for soil-conductor...

... the workforce is required. The needs to change has motivated Wells team to come out with a Low Cost Well approach where it consists of Cone Concept Statistical Approach, Slim conductor or splitter well design and fit for purpose completion design. Details of each item will be explained in Methodology...

..., especially when the reinforcements for underwater jacket members and piles are required. The conventional approach for adding new wells to existing tripod platforms is to add new deck extensions with new well slots to the topsides and to add new conductor guides to the jacket. When the jacket has...

..., International Edition , McGraw-Hill . This paper proposes a method of securing well conductors in shallow water open sea without installing a structural jacket. This will allow well completion at surface (above water) for subsequent easy production operation without installing mudline suspension...

... corrosion as smaller conductors which leads to a significant cost reduction. With the above technical improvements alone or combined, and a better DEH system than that was qualified in year 2000 is now available to the market. operator riser cable efficiency deh system conductor materials...

... Piezocone Penetration Test (CPTu) is widely used in offshore projects to obtain soil parameters, such as the undrained shear strength. Due to depth limitations to perform this test, it is common to obtain data until around 40m when the conductor installation process would require at least...

... heating/transmission line can be described by the fundamental parameters resistance/inductance of conductor and capacitance/conductance of insulation. The analysis of the overall heating system can be assessed using three alternative models: i) the most simple and compact RL model where only total...

... soil resistance–displacement relationship for input to fatigue analysis. spring-dashpot method offshore well displacement stiffness soil response framework soil spring diameter fatigue assessment conductor frequency fatigue analysis upstream oil & gas apparatus spring-only method...

... active heating armour layer offshore technology conference qualification program application tensile armour wire requirement upstream oil & gas heating flexible pipe flowline cable riser armour wire active heating technology conductor API 17 J – 4th Edition , Specification...

... effect between the axial and torsional loads. degradation neutral zone variation shutdown casing design loading event interaction conductor casing and cementing relative displacement shear stress upstream oil & gas displacement modeling & simulation startup strength wellhead...

... the design challenges and methods developed to maximise the reliability of the umbilical system. upstream oil & gas control umbilical subsea processing requirement electrical power subsea system installation cable evolution umbilical umbilical system conductor injection umbilical...