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A kind of ammonium persulfate corrosion inhibitor used in offshore oilfield production oil pipeline and its application

A technology of ammonium persulfate and offshore oilfields, which is applied in the coating process of metal materials, etc., and can solve problems such as ammonium sulfate corrosion inhibitors that have not been seen before

Active Publication Date: 2021-06-08
北京蓝星清洗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Check the information, but have not seen the relevant reports of ammonium sulfate corrosion inhibitor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Corrosion inhibitor ratio: 3% sodium molybdate, 10% boron sand, 10% tartaric acid, 2% phytic acid, 5% sodium ethylenediamine tetramethylphosphonate, and the rest is water.

[0016] Water tank: metal or plastic reservoir;

[0017] Specific operation: 3% of the ammonium sulfate solution is added to an ammonium sulfate solution at a concentration of 0.3%, and a submarine layer of 60 ° C is applied to the organic gum group by the oil pipeline.

[0018] Effect: After 4 hours, the N80 carbon steel test surface forms a layer of dense gray black film. The test piece was still unorffected by 48 hours even under the conditions of 20% sodium chloride solution, at 80 ° C.

Embodiment 2

[0020] Cleaning agent ratio: 3% sodium molybdate, 6% sodium silicate, 3% citric acid, 10% sodium ethylenediamine tetramethylphosphonate, and the rest is water.

[0021] Cleaning liquid container: plastic or metal reservoir;

[0022] Specifically, it is to operate in a 5% concentration of a concentration of 2%, and the oil pipeline is applied to the organic gum group according to the concentration of the concentration of 2%.

[0023] Effect: After 4 hours, the N80 carbon steel test surface forms a layer of dense gray black film. The test piece was still unorffected by 48 hours even under the conditions of 20% sodium chloride solution, at 80 ° C.

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Abstract

The invention relates to an ammonium persulfate corrosion inhibitor used in oil production pipelines in offshore oil fields and its application. It is composed of inorganic passivators, organic carboxylic acids, metal ion inhibitors and water in a certain proportion. Under the condition of 60 ℃, the addition of 0.3% to 2% of the corrosion agent in the 3% to 5% ammonium persulfate solution has excellent corrosion inhibition effect.

Description

Technical field [0001] The present invention belongs to the technical field of petroleum additives, and in particular to a marine oil field, ammonium sulfate, ammonium sulfate, ammonium sulfate, and its application thereof. Background technique [0002] Sea-shelf oil production: uses a drilling underwater wellhead, mounts the wellhead in the seabed, and the oil and gas pipeline that is exploited is directly sent to the land or enter the seabed oil facility. During the oilfield mining, due to the non-homogeneity of the formation, water immersion problem is often produced, which is required to be blocked. It is a case where the water is changed in the formation, to achieve the reduction of oilfield water, maintain formation energy, and improve the oil field. The purpose of the final harvesting rate. The blocking agent used in it is most commonly used in various high molecular weight polyacrylamide flocculant materials, such organic polymer substances, temperature conditions at 60 °...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/18C23C22/40
Inventor 单素灵王双田张静侯悖高克卿张学发
Owner 北京蓝星清洗有限公司
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