Tender Assisted Drilling on Deepwater Floating Production Systems

2005 ◽  
Author(s):  
Barbara A. Stone ◽  
Hans J. Treu ◽  
Pieter G. Wybro ◽  
Chunfa Wu
Keyword(s):  
Water Depth ◽  
Production Systems ◽  
Concept Selection ◽  
Design Standards ◽  
Detailed Design ◽  
Deepwater Drilling ◽  
Alternative Method ◽  
Successful Execution

Tender assisted drilling has been used with fixed platforms for a number of years. Although new to the deepwater drilling arena, tender assisted drilling provides an alternative method for drilling from dry tree units such as Spars and Tension Leg Platforms (TLPs). Studies have shown that deepwater tender assisted drilling is technically feasible. In addition, a tender assisted drilling program for a TLP is currently in operation in a field with a water depth of 3200 ft, and tender assisted drilling is planned for three developments due for installation within the next two years. Successful execution of tender assisted drilling requires attention to various issues throughout the project from concept selection through detailed design. These factors include the overall field layout, metocean criteria, and applicable design standards. Examples of platform payload impact (compared to self-contained drilling) are included.

DEEPWATER DRILLING AND PRODUCTION SYSTEMS OVERVIEW

1979 ◽  
Vol 19 (1) ◽  
pp. 166
Author(s):  
J. M. McKinney
Keyword(s):  
Production Systems ◽  
Petroleum Industry ◽  
Sedimentary Basins ◽  
Cost Effective ◽  
Dynamic Positioning System ◽  
Deepwater Drilling ◽  
Attractive Option ◽  
Blowout Preventer ◽  
Cost Effective Alternative ◽  
Water Depths

The petroleum industry is now involved in a highly significant exploration program to define the hydrocarbon potential of deepwater sedimentary basins. Within the last year, the ability to drill in waters deeper than 1300m has been demonstrated, and exploration plans for water depths down to 1600m have been announced. This paper reviews the industry's deepwater drilling experience and describes some of the unique technology required for a successful deepwater drilling venture. Drilling in over 1000m of water calls for more sophisticated, higher strength system components than are needed in shallower waters. Some of the differences between deepwater drilling procedures and more conventional shallow water techniques involve vessel carrying capacity, the use of a dynamic positioning system for staying on location, riser buoyancy materials, improved riser components and a multiplex electrohydraulic blowout preventer control system.Progress has also been made in developing production systems for use in water depths greater than 300m. The guyed tower concept, a product of Exxon's developmental work, has been demonstrated to be a cost-effective alternative to fixed-bottom platforms. The caisson vessel, designed to accommodate both drilling and production activities and to minimize motion caused by rough sea conditions, is an attractive option for operations in deep water. In addition, experience with a prototype of Exxon's subsea production system has demonstrated that this system is also ready for commercial use.

ASDD Technology in Deepwater Drilling and Its Process of Commercialization

2010 ◽  
Author(s):  
Yong-feng Guo ◽  
Shao-jun Ji ◽  
Chang-quan Tang
Keyword(s):  
South China Sea ◽  
South China ◽  
Water Depth ◽  
New Technology ◽  
Large Trial ◽  
Great Success ◽  
Deepwater Drilling ◽  
China Sea ◽  
A Company

The paper had discussed on a new technology and equipment in deepwater engineering, ASDD (Artificial Seabed Deepwater Drilling), and its process of commercialization in COSL of China. The concept of ASDD had put forwarded by a Norway engineer in 1993, and COSL had introduced it to China since 2004 from Europe, which has been built the cooperation with a company from Norway to develop ASDD not only the technology but also equipment. The advantages of ASDD is both reduce cost of drilling in deepwater and use common semi submersible to replace of expensive platform in deepwater drilling until water depth of 1500 m. A series of tests and simulations had been done both abroad and domestic by COSL and two large trial operations had been gone in South China Sea between 2008 and 2009. The trial well operation had been completed in Apr. of 2009, and COSL dispatched many huge vessels, including to Nanhai V, which is one of the hugest semi submersible in Aria, and AHVs that power is over 10,000 HP, such as Nanhai 212, Nanhai 213, Nanhai 216 and so on. The trial well had taken great success. It is obvious that COSL intend to carry out process of commercialization for ASDD, and the two commercial wells had been planed to drill in South China Sea in 2010.

From Basic Engineering to Ramp-Up: The New Successful Execution Approach for Commissioning in Brazil

2021 ◽  
Author(s):  
Paulino Bruno Santos ◽  
Teixeira Gilberto Junior ◽  
Leonardo De Souza Nogueira ◽  
Vilain Leonardo João ◽  
Simas G Milton Torres ◽  
...  
Keyword(s):  
Organizational Learning ◽  
Production Systems ◽  
Lessons Learned ◽  
Technical Knowledge ◽  
New Approach ◽  
Gas Compression ◽  
Start Up ◽  
Successful Execution ◽  
Surface Production ◽  
Made In

Abstract In the last three years, COMPANY has started the production of eight Surface Production Systems (Floating, Production, Storage and Offloading Units) in the Búzios and Lula fields of the Brazilian pre-salt that have generated technical knowledge, organizational learning and many opportunities to explore in upcoming projects. The lessons learned as well as the organizational knowledge acquired in this period, resulted in a new approach for the commissioning process to apply in COMPANY's coming FPSO projects. During this period, COMPANY identified improvement opportunities and stablished structuring programs focused on adding value to these new assets. The main opportunity identified was to reduce the period required for ramping-up the oil production, considering aggressive target dates for start-up, with high up time on the gas compression systems with minimum flaring. In this manuscript, will be described some of the important actions and changes made in commissioning process that allowed COMPANY to achieve better efficiency and safety in ramp up of new FPSOs in Brazilian pre salt fields.

An alternative approach to primary rhinoplasty using Walsham forceps

2014 ◽  
Vol 128 (11) ◽  
pp. 1003-1004
Author(s):  
P F D Bowles ◽  
B Fu ◽  
S J Cartwright ◽  
S J Watts
Keyword(s):  
Aesthetic Outcome ◽  
Nasal Bones ◽  
Alternative Method ◽  
Primary Rhinoplasty ◽  
Alternative Approach ◽  
Successful Execution

AbstractBackground:The successful execution of lateral osteotomies in rhinoplasty is an important step that can influence the functional and aesthetic outcome of the procedure.Objective:This paper describes an alternative method for achieving mobilisation of the nasal bones by careful application of Walsham forceps during primary rhinoplasty.

scholarly journals FDPSOs: The new reality, and a game-changing approach to field development and early production systems

2011 ◽  
Vol 133 (05) ◽  
pp. 54-62
Keyword(s):  
Production System ◽  
Production Systems ◽  
Step Change ◽  
Full Field ◽  
Field Development ◽  
Deepwater Drilling ◽  
Drilling Rig ◽  
Key Variables ◽  
Early Production ◽  
Game Changer

This article summarizes development of the Azurite field as a way of providing context for evolution of the Floating, Drilling, Production, Storage and Offloading (FDPSO) concept. It also reflects on the project’s technical and economic drivers that led the Azurite project team to select the FDPSO concept. The paper also highlights other application for FDPSOs and discusses some of the key variables that determine the suitability of the FDPSO concept for use in field developments. The step change in economics afforded by the incorporation of a drilling rig onboard a conventional FPSO brings new hope to fields of similar geometry and in similar environments that heretofore were considered marginally economic or uneconomic. The FDPSO concept also has application as an early production system, in advance of full-field developments. The concept has tremendous potential as a ‘game changer’ for field developments, whether it is employed to unlock the value of marginal fields in deepwater – even in a low oil price environment – or as an early production system. As the concept employs a drilling rig onboard the vessel, traditional challenges regarding deepwater drilling rig day rates and availability are eliminated.

Alternative Method of Buoy Supporting Riser (BSR) Installation

2011 ◽  
Author(s):  
Ricardo Franciss ◽  
Enrique Casaprima Gonzales ◽  
Jose´ Carlos Lima de Almeida ◽  
Jairo Bastos de Arau´jo ◽  
Antonio Carlos Fernandes
Keyword(s):  
Fatigue Life ◽  
Field Test ◽  
Water Depth ◽  
Monitoring Systems ◽  
Deep Waters ◽  
Alternative Method ◽  
Sea Bottom ◽  
Campos Basin ◽  
Steel Catenary Risers ◽  
Flexible Risers

Due to the 2200m water depth and harsher environmental conditions, one option that Petrobras is considering for the production of the Pre-Salt fields is the use of a subsurface buoy known as a Buoy Supporting Riser (BSR). It is composed of a subsurface tethered buoy, flexible jumpers connecting the Floating Production Unit (FPU) to the BSR and Steel Catenary Risers (SCRs) connecting the BSR to the flowlines on the sea bottom. The main advantages of this system are that it decouples the FPU motions from the SCRs, reducing fatigue damage in the touch down zone. It may also be installed independently of the FPU, except for the flexible jumpers, which would reduce the risers load on the FPU. Petrobras has been studying this concept since 1997 and has established, as a final stage of the study, a field test with the actual installation of the BSR. This was performed through an alternative method using only Petrobras AHTS boats, in order to avoid critical and expensive resources such as lift barges. With the purpose of validating this new installation procedure, Petrobras performed the referred installation of a 27.2m × 27.2m square ring shaped buoy in Congro Field in the Campos Basin over a water depth of 500m. The buoy was positioned at 80m depth, where the incidence of loads caused by waves is negligible, thus increasing the fatigue life of risers. After the BSR installation, the riser pull-in procedure was also conduced. This paper describes why this technology is necessary for these fields and the model tests made to validate the installation procedures. It also discusses how Petrobras tested the pull-in operations for two flexible risers after the actual buoy was installed. Monitoring systems were designed to check all forces and displacements during the referred installation. These actions will consolidate the BSR technology for Petrobras leading to another riser system option for production in ultra deep waters.

Towards Satellite Production System Selection for Moderate Water Depths

2003 ◽  
Author(s):  
Beverley F. Ronalds ◽  
Scott M. Simpson ◽  
K. F. Thomas Foo
Keyword(s):  
Water Depth ◽  
Oil And Gas ◽  
Production Systems ◽  
Selection Process ◽  
Large Database ◽  
Reservoir Fluid ◽  
Key Drivers ◽  
Selection For ◽  
System Selection ◽  
Water Depths

A large database of North Sea subsea satellites and minimum facilities platforms is used to derive and justify key drivers influencing the selection process for satellite production systems in shallow and moderate water depths. The key drivers include reservoir fluid, tieback length, water depth (d), and well count (w) and pattern. In particular, it is found that an approximate dividing line between subsea and surface satellite facilities occurs at d = kw, where k ≈ 8.5m and 15m for oil- and gas-dominated fields, respectively.

Polyester Mooring for Ultra-Deepwater Applications

2002 ◽  
Author(s):  
Shankar S. Bhat ◽  
Christian A. Cermelli ◽  
King Him Lo
Keyword(s):  
Water Depth ◽  
Oil And Gas ◽  
Synthetic Fiber ◽  
Mooring Lines ◽  
Deepwater Drilling ◽  
The Past ◽  
Design Methodologies ◽  
Essential Components ◽  
New Material ◽  
Industry Experience

In the past few years, drilling for oil and gas has been conducted in increasingly greater water depth, with recent records approaching 10,000.0 ft water depth. Ultra-deepwater drilling demands increased performance from mooring systems, such as tight watch circle, enhanced reliability, and ease of deployment. Synthetic fiber mooring lines are essential components to help meet these demands. Because of the lack of industry experience with this new material, advanced studies are required to properly design and optimize polyester-based mooring systems for ultra-deepwater drilling. This paper provides information on the performance of polyester mooring lines, based on coupled and un-coupled analyses and compares various design methodologies.

An Alternative Systems Approach to the Successful Execution of Deepwater Drilling Programs

2014 ◽  
Author(s):  
R. Bouska ◽  
C. Jeffery ◽  
D. Ramnarace ◽  
C. Brinkman ◽  
J. Jorgensen ◽  
...  
Keyword(s):  
Systems Approach ◽  
Deepwater Drilling ◽  
Alternative Systems ◽  
Successful Execution
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