Oil platform construction pdf

Citation Type. Has PDF. Publication Type. More Filters. A Review on Advancements in Jacket Platform. Offshore Structures play a major role in the exploitation of oil and natural gases from marine environment and are also useful in other services such as navigation, met-ocean data collection, … Expand.

View 1 excerpt, cites background. In the early stages of oil and gas exploitation, it is important to rapidly identify which production platform is likely to deliver its utmost value. This study first explores the key features and … Expand. Offshore platforms are considered among the most significant structures in the world that humans have ever built, having to function in a wide range of extremely challenging environments and have a … Expand.

Highly Influenced. View 5 excerpts, cites background. Analysis of the Lebanese oil and gas exploration in the Mediterranean Sea: An overview and analysis of offshore platforms. Offshore structures are used around the world for many functions, and these structures vary according to the depth of the water, the depth of water and environmental conditions are the main factors … Expand.

Marine and offshore structures are constructed worldwide for various functions in a variety of water depths and environmental conditions like deep sea oil drilling, marine excavations etc. The … Expand. Integrated well-path and surface-facility optimization for shallow-water oil and gas field developments. Journal of Petroleum Science and Engineering.

Abstract Following the discovery of an offshore oil or gas field, extensive facilities must be built to drill, produce and transport the hydrocarbon from the reservoir to a plant for processing.

A novel rational scenario for the post-construction phases following all-ground construction of an offshore platform. This paper investigates numerically and applies practically a newly proposed rational structural analysis scenario for the feasible manipulation of the triple post-construction phases of a monopod … Expand. In this paper an analytical model is proposed to estimate roughly the materials required for construction of breakwaters of harbors.

The proposed model is applicable for the harbors having the … Expand. View 3 excerpts, cites background. Once all the structural work is completed and the equipment installed, onshore commissioning can commence. This involves testing every electrical cable, hydrotesting the pipework, leak testing the HVAC system, running up motors, pumps and generation power units. The deck is then put onto a barge and towed out to the jacket location. A heavy lift barge crane swings the deck over the jacket and both are welded together with great accuracy, a couple of mm between the mating faces being the norm.

The offshore commissioning activities are carried out and eventually the final pipe in the reservoir perforated by small explosive charges.

This allows the orderly high pressure flow of gas and fluids to come up the riser to the production manifolds. The production platform is installed over the wellhead and risers connected to the platform production manifolds. A mixture of gas, oil an water are forced up the risers from the reservoir into the high pressure HP and low pressure LP production manifolds. From the HP manifold the gas is directed to the HP Separator a thick walled vertical pressure vessel, where due to pressure difference the gas flashes off.

From the LP manifold the low pressure gas, water and oil is directed to the LP Separator, another vertical pressure vessel where the oil is directed to heaters, water is separated out and sent to produced water system and any gas compressed and set to join the HP separator gas outlet.

The wet gas leaves the HP separator and along with compressed gas from the LP separator recovered gas flows to gas compressors. These are normally gas turbine driven and compress the gas before discharging it through dehydration process in the glycol contactor, the glycol removing any water particles in the gas.

Some of this gas known as fuel gas is diverted to the knockout drum where liquid condensates are removed. It is the further filtered and heated for use on the platform power generation gas turbines, export pumps and compressor turbines. The remaining gas is now ready to be sent ashore by the gas export compressors through the subsea pipeline.

Once the oil leaves the LP separator it is pumped by the oil booster pumps through an oil heater then into a coalescer, from where it can be further processed or sent ashore by the main on line pumps by subsea pipeline. The water from the LP separator is pumped through sand filters and cyclones then an oily water separator to remove the solids and oil. From here the water will be passed through a degasser drum where any remaining oil and gas is removed. This gas residue is then put to the flare where it is flared off to atmosphere, the oily water being returned to the LP separator.

The produced water is continually monitored and pumped overboard unless it is needed for injection back down into the reservoir, an enhanced oil recovery method to increase production.

A sketch of an offshore production platform is shown below; please note I have only shown some of the major equipment, relocating some of these to aid clarity.