ASATN/PARAIN INIBITOR SOTIONS
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championX.com ASPHALTENE/PARAFFIN INHIBITOR SOLUTIONS | NORWAY CHALLENGE An operator in Norway was experiencing separation problems due to the deposition of a sticky substance in the degasser. The degasser stopped skimming the oil after the oil tray area got completely filled with solids. The solids blocked the filters on a regular basis, resulting in a high OiW content in the discharge water, exceeding the regulatory limits. The produced fluid and a deposit retrieved from the hydrocyclone upstream of the degasser—and believed to be similar to the one causing the blockage in the vessel—were analyzed. This investigation revealed a deposit of a complex nature, most likely containing inorganic materials cohesively maintained with organic substances such as Calcium Naphthenate (CaN) deposit and other hydrocarbon compounds. After about 15 years of running this process, the operator raised concerns about the high cost of this complex operation. In addition, water production had increased such that the oil field was now producing 92% water and 8% oil. One of their critical concerns was the high cost of obtaining and treating the wash water. The wash water had to be de-oxygenated with oxygen scavengers, treated with biocides to kill sulfate-reducing bacteria (SRB), heated to 60 °C, and then disposed of as dirty salt water after the washing. An additional cost burden was the maintenance required to keep five large storage tanks in operation. Sludge remover eliminates plugging, restores oil-skimming functionality TREATMENT TIME BEFORE DEGASSER STARTED SKIMMING OIL AGAIN AND OIW CONCENTRATIONS DECREASED 24 hours
Transcript of ASATN/PARAIN INIBITOR SOTIONS
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ASPHALTENE /PARAFFIN INHIBITOR SOLUTIONS | NORWAY
CHALLENGEAn operator in Norway was experiencing separation problems due to the deposition of a sticky substance in the degasser.
The degasser stopped skimming the oil after the oil tray area got completely filled with solids. The solids blocked the filters on a regular basis, resulting in a high OiW content in the discharge water, exceeding the regulatory limits.
The produced fluid and a deposit retrieved from the hydrocyclone upstream of the degasser—and believed to be similar to the one causing the blockage in the vessel—were analyzed. This investigation revealed a deposit of a complex nature, most likely containing inorganic materials cohesively maintained with organic substances such as Calcium Naphthenate (CaN) deposit and other hydrocarbon compounds. After about 15 years of running this process, the operator raised concerns about the high cost of this complex operation. In addition, water production had increased such that the oil field was now producing 92%
water and 8% oil. One of their critical concerns was the high cost of obtaining and treating the wash water.
The wash water had to be de-oxygenated with oxygen scavengers, treated with biocides to kill sulfate-reducing bacteria (SRB), heated to 60 °C, and then disposed of as dirty salt water after the washing. An additional cost burden was the maintenance required to keep five large storage tanks in operation.
Sludge remover eliminates plugging, restores oil-skimming functionality
TREATMENT TIME BEFORE DEGASSER STARTED SKIMMING OIL AGAIN AND OIW CONCENTRATIONS DECREASED
24 hours
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ASPHALTENE /PARAFFIN INHIBITOR SOLUTIONS | NORWAY
©2021 ChampionX, All Rights Reserved. 01850_CH0419_0121
This document is provided on an “as is” basis without warranties of any kind. ChampionX DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR SUITABILITY FOR ANY PURPOSE, TITLE, AND NON-INFRINGEMENT. While reasonable care has been taken in the preparation of this document, ChampionX does not represent or warrant that the contents of this document are accurate, complete, reliable, current or error-free.
Chemical Technologies Headquarters | 11177 S. Stadium Dr. | Sugar Land, TX 77478 | T: +1-281-263-6500
SOLUTIONBottle testing in the laboratory showed that the addition of water and ACPC11340A, an environmentally acceptable sludge remover, had a positive effect on the tested deposit.
By dissolving and dispersing the organic cohesive fractions, the chemical solution disrupted the integrity of the deposit, leaving loose inorganic and solid material behind.
RESULTSThe degasser was filled in with ACPC11340A statically for 24 hours and then flushed with water. After the operation, the degasser started skimming oil again and OiW concentrations decreased.
The operator decided to visually inspect the degasser by opening it up after the cleaning operation. The vessel was found “surprisingly clean,” with the exception that some solid material had fallen to the bottom of the degasser, providing physical evidence of the effect of the product as demonstrated in the static lab testing:
The solution of ACPC11340A and water dissolved and dispersed the organic fraction, disturbed the cohesion of the deposit; and left the inorganic, solid material in the bottom of the degasser, from which it was safely removed manually. Recirculation of the fluids would have rinsed the solids out of the degasser.
Deposit blocked strainer in water injection pump
Organic material is dissolved and dispersed in the top layer of ACPC11340A, allowing the inorganic, solid material to fall to the bottom
Upon visual inspect, the degasser vessel was found “surprisingly clean” according to the operator
