TY - THES

T1 - Characterization of the criteria and conditions in sweet and sour borehole environments for the materials selection and design of sand retention devices

AU - Bekhrad, Parham

N1 - embargoed until 09-11-2021

PY - 2016

Y1 - 2016

N2 - In oil and gas industry, sand production is one of the problems costing oil and gas companies large sums of money. Due to recent developments in drilling technology, deeper formations can now be reached, and as a result new materials that can withstand these environments are desirable. These environments are predominantly combinations of CO2, H2S, high temperature and high pressure, hence further investigation into appropriate materials is required. In this master thesis, different sand control methods are introduced and typical materials which are generally used for these methods are listed. One of these materials used in different sectors of oil and gas industry, especially in sand screens is alloy316L. Alloy316L and 12 other alloys that are most common in sand screen manufacturing for sweet and sour conditions are compared. The results of these assessments show that alloy316L is not a suitable option for highly corrosive media such as environments containing H2S and CO2. It is suggested that other superior alloys that can withstand these environments are used instead. After detailed research into corrosion resistance in different physical conditions and mechanical properties of a set of candidate materials, it was found that C276 is by far the best option among all alloys that can be considered by oil companies. Although all other candidate alloys have mechanical properties inferior to C276, each provide a cheaper alternative in certain physical conditions and environments. Companies could achieve an optimum balance between cost and quality of the solution by taking into account the detail properties of the working media and then choosing the most appropriate material accordingly.

AB - In oil and gas industry, sand production is one of the problems costing oil and gas companies large sums of money. Due to recent developments in drilling technology, deeper formations can now be reached, and as a result new materials that can withstand these environments are desirable. These environments are predominantly combinations of CO2, H2S, high temperature and high pressure, hence further investigation into appropriate materials is required. In this master thesis, different sand control methods are introduced and typical materials which are generally used for these methods are listed. One of these materials used in different sectors of oil and gas industry, especially in sand screens is alloy316L. Alloy316L and 12 other alloys that are most common in sand screen manufacturing for sweet and sour conditions are compared. The results of these assessments show that alloy316L is not a suitable option for highly corrosive media such as environments containing H2S and CO2. It is suggested that other superior alloys that can withstand these environments are used instead. After detailed research into corrosion resistance in different physical conditions and mechanical properties of a set of candidate materials, it was found that C276 is by far the best option among all alloys that can be considered by oil companies. Although all other candidate alloys have mechanical properties inferior to C276, each provide a cheaper alternative in certain physical conditions and environments. Companies could achieve an optimum balance between cost and quality of the solution by taking into account the detail properties of the working media and then choosing the most appropriate material accordingly.

KW - Sand screens

KW - wire-wrapped

KW - corrosion

KW - materials selection

KW - Sand screens

KW - metallurgy

KW - wire-wrapped

KW - corrosion

KW - materials selection

M3 - Master's Thesis

ER -