...Abstract The Laggan-Tormore gas field is a deepwater development located 125 km off the West Coast of the UK Shetland Islands, in the North Atlantic. The field consists of five subsea production wells tied back to subsea manifolds that are connected to two 18-in multiphase pipelines. In addition...

.... Therefore, an effective environmentally acceptable scale inhibitor was required to mitigate scale subsea. In addition, the scale inhibitor was required to conform to standards normally associated with products used in deepwater fields. These standards specify that a subsea product should possess key...

...Abstract Concept selection and initial design of deepwater subsea production systems can have a profound impact on the evaluation of the commercial viability of a discovery. Although detailed design comes later in the process, the decisions made at this early stage of a project will generally...

... properties. For subsea installation and commissioning there is a significant risk of raw seawater ingress during laying process of flowline in deepwater. Stainless steel and other duplex steels often used for flowline, will suffer quite rapid pitting if exposed to raw sea water for a period times...

... is assessed with all materials the chemical will contact at 70°C (158°F) for 14 days. Compatibility with Umbilical Flushing Solvent Abstract In this paper, several scale inhibitors and combination scale inhibitor/corrosion inhibitors were developed to meet the requirement for deepwater applications...

... the well casings were not considered in the original wellhead tree CP calculations; however, no CP designs were available to confirm or dispute this idea. Abstract Two deepwater subsea production fields, Arnold and Oyster, started producing in 1998 in the Ewing Bank Area of the Gulf of Mexico. The fields...

... environment. Baker Petrolite has successfully deployed corrosion inhibitors in diverse, challenging oilfield conditions such as situations involving carbon dioxide flood conditions, deepwater conditions, and conditions of high temperature and pressure. Our discussion will include these instances to illustrate...

... asset integrity systems to mitigate against Corrosion Scale Sand erosion Cracking (environmentally or mechanical induced cracking such as fatigue) Abstract This paper discusses the challenges faced in the selection of corrosion and erosion monitoring techniques for deepwater developments...

...Martensitic stainless steel 15Cr UNS $42500 failure analysis brittle fracture intergranular cracking heat treatment production tubing coupling oil and gas deepwater INTRODUCTION In June 1999, a premium threaded coupling of a 5-½ inch (140 mm), 22.54 lbs/ft production tubing failed...

...Abstract Steel catenary and top tension risers for deepwater oil and gas field developments are subject to corrosive environments on both internal and external surfaces and to fatigue loading. The girth welds control, the fatigue life of such structures. Therefore, there is a need to quantify...

...Abstract Effective corrosion monitoring of subsea flowline installations remains a challenge, yet the flowlines are the most capital-intensive parts of subsea and deepwater projects. In the Gulf of Mexico and many other field developments around the world, these lines are made from carbon and low...

.... The systems analysis is a key step in the flow assurance process. A case study on an offshore production is presented including a detailed description of the experimental procedures. The materials studied included synthetic elastomers such as PTFE and natural rubbers. deepwater corrosion inhibitor...

... monitoring and inspection issues that arise on these structures. Deepwater Offshore Corrosion Floating Production Systems Moorings INTRODUCTION The new generation of floating offshore production systems such as Floating Production, Storage and Offloading facilities (FPSO), SPAR (originally designated...

.... To explore the interaction of chemical treatments, a "typical" deepwater system was selected where hydrates are known to occur that also has CO₂ corrosion. Both hydrate and corrosion inhibitor performance experiments were performed with the individual chemical treatment and both inhibitors present...

... ultra-high shear conditions (ca. 3000 Pa) cause severe localized corrosion. ^{9 - 12} High shear is projected to be an important condition for deepwater projects that must operate at high production rates. Lower shear tests were performed using an array of small autoclaves. A test...

... the production system. This paper details the process, including test results, to develop, apply and monitor a successful corrosion inhibition system for subsea oil and gas wells. Corrosion Corrosion inhibition CO₂ Corrosion Deepwater Subsea Offshore Subsea pipelines Subsea flowlines...

... the minimum protective potential. In addition to eliminating the retrofit risk, significant cost and weight savings were achieved. The protection system life will exceed the design life of 20 years. cathodic protection subsea protection coated platform deepwater sacrificial anodes INTRODUCTION In 1989...