Cesium formate brine can enable a safe, trouble free barrier for clean upper completions, workovers, suspensions and interventions.
Higher productivity perforations are possible with cesium formate brine, as compared to weighted systems or scaling brines. Additionally, completion and workover operations are faster and more efficient when perforating overbalanced in cesium formate brine compared to perforating underbalanced on coiled tubing or wireline.
We provide non-damaging cesium formate brine for all downhole environments, taking into account technical considerations such as density, viscosity, true crystallization point (TCP), pressurized crystallization temperature (PCT) and clarity. In most instances, cesium formate brine can perform without costly and sometimes formation-damaging additives such as scavengers, surfactants, corrosion inhibitors or weighting materials. This enables you to save time and money on formulation preparation, conditioning and well delivery.
Solutions for the most demanding fields
Cesium formate brine is field proven and has been successfully used in high pressure high temperature (HPHT) fields at temperatures as high as 235˚C (455˚F) and pressures up to 1,126 bar (16,331 PSI), where corrosive gases, such as carbon dioxide (CO2) and hydrogen sulphide (H2S) are commonplace. Cesium formate brine is replacing high-risk halides as the operators’ fluid-of-choice for extreme well environments. Used in more than 100 HPHT field applications over a span of 15 years, there are no recorded instances of stress corrosion cracking (SCC) with cesium formate brine.
The low corrosivity of cesium formate brine is due to its benign properties. A monovalent fluid with an alkaline pH, it can be buffered with carbonate/bicarbonate to maintain a favorable pH even after large influxes of acid gas. Furthermore, corrosion inhibitors or biocides are not needed.
The halide content of cesium formate brine is very low, which reduces the risk of catastrophic, fast-acting localized corrosion attacks that are often associated with halides, such as pitting and stress corrosion cracking. The formate ion is an antioxidant, which limits the need for oxygen scavengers and avoids problems that often occur when these scavengers become depleted.
Minimize environmental impact
Safety, health and environmental considerations are paramount, especially in challenging environments such as HPHT fields. Cesium formate brine can significantly reduce an operators’ risk of environmental damage and personal injury. If there is an accidental release or spill, the effects are minimal and liability is reduced accordingly.
Cesium formate brine is also non-hazardous to people. Its benign nature delivers excellent test results against conventional fluids for dermal toxicity, eye irritation, skin sensitization and mutagenicity. This non-toxicity enables a safer and less restrictive working environment. Unlike zinc and calcium bromide, cesium formate brine can be handled without a chemical hazard suit, full-face protection or respirators.
Cesium formate brine meets the demanding environmental standards set forth by environmental authorities around the world, including the Centre for Environment, Fisheries and Aquaculture Science (CEFAS) in the United Kingdom and the Pollution Control Authority (SFT) in Norway. Used in highly sensitive environments ranging from the Barents and North Seas to Hungary and Alaska, cesium formate brine reduces the environmental effect of hydrocarbon exploration.
Link:
http://www.cabotcorp.com/solutions/products-plus/cesium-formate-brines/clear-brine-fluids
Higher productivity perforations are possible with cesium formate brine, as compared to weighted systems or scaling brines. Additionally, completion and workover operations are faster and more efficient when perforating overbalanced in cesium formate brine compared to perforating underbalanced on coiled tubing or wireline.
We provide non-damaging cesium formate brine for all downhole environments, taking into account technical considerations such as density, viscosity, true crystallization point (TCP), pressurized crystallization temperature (PCT) and clarity. In most instances, cesium formate brine can perform without costly and sometimes formation-damaging additives such as scavengers, surfactants, corrosion inhibitors or weighting materials. This enables you to save time and money on formulation preparation, conditioning and well delivery.
Solutions for the most demanding fields
Cesium formate brine is field proven and has been successfully used in high pressure high temperature (HPHT) fields at temperatures as high as 235˚C (455˚F) and pressures up to 1,126 bar (16,331 PSI), where corrosive gases, such as carbon dioxide (CO2) and hydrogen sulphide (H2S) are commonplace. Cesium formate brine is replacing high-risk halides as the operators’ fluid-of-choice for extreme well environments. Used in more than 100 HPHT field applications over a span of 15 years, there are no recorded instances of stress corrosion cracking (SCC) with cesium formate brine.
The low corrosivity of cesium formate brine is due to its benign properties. A monovalent fluid with an alkaline pH, it can be buffered with carbonate/bicarbonate to maintain a favorable pH even after large influxes of acid gas. Furthermore, corrosion inhibitors or biocides are not needed.
The halide content of cesium formate brine is very low, which reduces the risk of catastrophic, fast-acting localized corrosion attacks that are often associated with halides, such as pitting and stress corrosion cracking. The formate ion is an antioxidant, which limits the need for oxygen scavengers and avoids problems that often occur when these scavengers become depleted.
Minimize environmental impact
Safety, health and environmental considerations are paramount, especially in challenging environments such as HPHT fields. Cesium formate brine can significantly reduce an operators’ risk of environmental damage and personal injury. If there is an accidental release or spill, the effects are minimal and liability is reduced accordingly.
Cesium formate brine is also non-hazardous to people. Its benign nature delivers excellent test results against conventional fluids for dermal toxicity, eye irritation, skin sensitization and mutagenicity. This non-toxicity enables a safer and less restrictive working environment. Unlike zinc and calcium bromide, cesium formate brine can be handled without a chemical hazard suit, full-face protection or respirators.
Cesium formate brine meets the demanding environmental standards set forth by environmental authorities around the world, including the Centre for Environment, Fisheries and Aquaculture Science (CEFAS) in the United Kingdom and the Pollution Control Authority (SFT) in Norway. Used in highly sensitive environments ranging from the Barents and North Seas to Hungary and Alaska, cesium formate brine reduces the environmental effect of hydrocarbon exploration.
Link:
http://www.cabotcorp.com/solutions/products-plus/cesium-formate-brines/clear-brine-fluids
