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Keywords: wellhead
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Proceedings Papers
Enhancing Subsea Asset Integrity: Holistic Risk Management and Monitoring Strategy for Mud Line Suspended Wells
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35594-MS
... and uncertainty assessment risk management wellbore integrity ml well assessment risk assessment qualitative risk assessment passive monitoring system beacon risk management and monitoring strategy wellhead enhancing subsea asset integrity leak offshore technology conference risk assessment...
Proceedings Papers
Novel Mechanical Tool for Running, Locking, and Retrieval of Subsea Tree to Wellhead
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35650-MS
... Abstract Hydraulic tree connectors can be vulnerable to hydraulic failures. This paper describes a newly developed tree connector mechanical running tool (TCMRT) that is designed to mechanically perform locking and/or unlocking of a hydraulic tree connector to the wellhead to significantly...
Proceedings Papers
The Impact of Integrating Reservoir and Surface Facilities with Liquid-Liquid Subsea Separation Systems on Decision-Making in a Post-Salt Deepwater Heavy Oil Reservoir
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35629-MS
... not impact the oil production. Differences in observed performance were primarily related to separate water at the surface facilities. The simulator attempted to impose the BHP values accordingly. When the boundary conditions were set at the wellhead, the effects of different surface facility layouts...
Proceedings Papers
HPHT Fatigue Resistant Wellhead System Design First Use
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35491-MS
... of a deepwater project. This project used the Dril-Quip 20,000 (20k) psi rated BB IIe subsea wellhead system with DXe mandrel profile and gasket, and a Badger casing connector. This paper describes the fatigue assessment and fatigue resistance design of the 20k rated BB IIe wellhead system and the fatigue...
Proceedings Papers
What to Learn from a Hydrate Remediation Operation in a West-African Deep-Water Production Well?
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35321-MS
... such as methanol injection from the wellhead. However, given that methanol could not reach the depth at which the blockage(s) were formed, a Hydrate Remediation Skid (HRS) was hired from the relevant contractors, adequate system isolations were made and depressurization carried out which eventually removed...
Proceedings Papers
Multi-String Analysis of a Mudline Hanger System in High Temperature Wells During Production
Available to PurchaseUdaya B R. Sathuvalli, P. V. Suri Suryanarayana, Grant Bathgate, Johan Delgado, Renato Arcos, Jay Painter, Shaikh Rahman
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32487-MS
... Abstract We present a semi-analytical method to analyze the multi-string mechanical response of the tubulars, the wellhead and the mudline hangers (MLH) in offshore wells with a mudline suspension system (MLS). The MLS introduces redundancies at the MLH shoulders. In our method, the tubulars...
Proceedings Papers
Minimizing Environmental Impacts During Offshore Drilling and Production Using Innovative Waste Recycling and Reutilization Technology in China Bohai Oilfield
Available to PurchaseXinxin Hou, Hongbo Huo, Xiaocheng Zhang, Tao Xie, Ruibing He, Hai Lin, Dongsheng Xu, Yuchen Zhang, Zhiheng Li, Chuang Song, Jia Liu
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32581-MS
... reference for waste management of other similar offshore oilfield. asia government waste management coating agent upstream oil & gas drilling fluid bohai bay environmental protection drilling fluid drilling fluids and materials china government cuttings slot well closing wellhead...
Proceedings Papers
Numerical Simulation of Subsea Wellhead Bearing Capacity in Deepwater with Novel Expandable Surface Conductor Foundation
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32618-MS
... Abstract Subsea wellhead stability is an important technical issue in deepwater and ultra-deepwater oil and gas drilling operations. Since the soil under mudline is mainly silt and clay with weak cementation, the vertical friction force and horizontal displacement provided by the surface...
Proceedings Papers
A Subsea Wellhead Interface Rated to Handle Extreme Drilling Requirements in the Gulf of Mexico
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32608-MS
... Abstract With the offshore drilling industry desiring ever increasing structural performance, this inherently suggests a move to larger wellhead mandrels. The Wellhead System presented in this paper provides an alternative approach. This program optimized existing wellhead solutions, maximized...
Proceedings Papers
Novel THOR Technology for Orientation of Vertical XT to Completions
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31033-MS
... Abstract On conventional vertical trees (VXTs) with a tubing hanger (TH) in the wellhead (WH), orientation of the VXT to the TH system is a complicated and expensive process. Leveraging patented technology, the tree to hanger orientation ring (THOR) and tooling were implemented to save CAPEX...
Proceedings Papers
Mitigating Wellhead Fatigue While Reducing HSE Risk, Deck Spread, Deployment Time, and Crew Size
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31047-MS
... Abstract Subsea wellhead systems have a design fatigue life that is expected to withstand the damage incurred from stress caused by cyclic loading during its operation. Wellhead fatigue is a critical factor when drilling offshore wells because the condition of the wellhead determines the length...
Proceedings Papers
Significant Reduction of Well System Fatigue by Use of Reactive Flex Joint with Integrated Monitoring System
Available to PurchaseKnut Olav Sønåsen, Per Thomas Moe, Morten Hansen, Dag André Fjeldstad, Halvor Gustad, Alireza Sadeghi, Alexander Hilley, Arve Bjørset
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31265-MS
.... It uses a nitrogen gas spring to reverse the flex joint bending moment. The generated opposing moment increases with an increasing angle of the lower flex joint. This significantly reduces the cyclic bending moments in the lower part of the Blow Out Preventer (BOP) and wellhead (WH) system. WAMS...
Proceedings Papers
Sustaining Oil and Gas Fields by Using Multiphase Gas Compression to Increase Production and Reserves, and Lower Operating Costs and Environmental Emissions Footprint
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31072-MS
... operating range allowing it to be positioned near the wellhead. Currently the product is targeted at onshore unconventional fields, and field data have been collected on such fields. For deployment to onshore unconventional fields the multiphase compressor has been packaged within a system so...
Proceedings Papers
VXTe Deepwater Tree Development – Cost and Risk Reduction Through New and Advanced Technology
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30519-MS
.... These challenges included wellhead interfaces capable of handling the stack-up tolerances of casing hangers, and a need to orient the tubing hanger relative to a flowline connection system. The solution utilized by most conventional systems was the incorporation of a tubing head spool or some other elaborate means...
Proceedings Papers
Subsea Wellhead Retrieval Tool Uses New Technologies to Successfully and Efficiently Complete Abandonment Operations
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30765-MS
..., single trip (MOST) tool system. Along with recovering the subsea wellhead, the associated casing strings and conductor were to be cut and retrieved. The standard MOST tool is a field-proven system, which latches externally to the wellhead, then cuts and recovers subsea wellheads. The newly released...
Proceedings Papers
Innovative Features Added to the Subsea Control System, to Enable a Safer Execution of the Intervention Operation
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30910-MS
... Intervention Systems (Light Interventions) This type has a surface BOP (Coil tubing and/or wireline) with a subsea well control package (WCP) on top of the tree/wellhead connected via a riser. WCP consists of an Emergency Disconnect Package (EDP) and a Lower Riser Package (LRP). The EDP/LRP is a system...
Proceedings Papers
Sensor Ball: An Autonomous Untethered Logging Platform
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30538-MS
... in the field in Saudi Arabia in collaboration with our EXPEC ARC and Northern Area Production Engineering and Well Services Divisions in Saudi Arabia. wellhead acoustic pinger microcontroller magnet well logging upstream oil & gas operation platform wireless charging offshore technology...
Proceedings Papers
Using a New, Autonomous, and Easy to Install Strain Sensor for Monitoring of Dynamic Loads on a Subsea BOP in Order to Reduce Conservatism and Increase Service Life of Subsea Equipment.
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30862-MS
... Abstract In recent years, monitoring of the subsea BOP in order to keep track of movements, loads, and fatigue accumulation on subsea wellheads has been performed. On the Norwegian Continental Shelf, more than 50% of the semisubmersible drilling rigs have equipment for measuring the motion...
Proceedings Papers
Simulation Study Comparing Offshore Versus Onshore CO 2 Well Blowouts
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29461-MS
... scenario contingency planning modeling & simulation wellhead onshore case leakage rate blowout well control operational safety upstream oil & gas leakage pipe seawater onshore fluid dynamics annular pressure drilling saturation References References Corey , A.T...
Proceedings Papers
Aasta Hansteen Subsea Production System for Deep Water and Harsh Environment
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29561-MS
... to improve operational efficiency and increase safety under given challenging conditions. The paper also addresses a full scale wellhead testing in order to verify the design for fatigue performance. Several novel technologies were qualified and implemented as part of the Aasta Hansteen Subsea Production...
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