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Anti-freezing corrosion inhibition foam drainage scale inhibitor and preparation method thereof

A technology of scale inhibitor and corrosion inhibitor, which is applied in the field of antifreeze corrosion-inhibiting foam discharge and scale inhibitor and its preparation, can solve the problem of large workload of filling chemicals, no antifreeze effect, complicated filling system, etc. problem, to achieve significant thickening, excellent solubility and compatibility, rich foam effect

Active Publication Date: 2021-01-26
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an antifreeze-type corrosion-inhibiting foam-discharging and scaling agent and its preparation method. Scale inhibitors, corrosion inhibitors and foam drainage agents have relatively single agent performance, the filling system is cumbersome, the workload of filling agents is relatively large, and they do not have the effect of antifreeze

Method used

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  • Anti-freezing corrosion inhibition foam drainage scale inhibitor and preparation method thereof
  • Anti-freezing corrosion inhibition foam drainage scale inhibitor and preparation method thereof
  • Anti-freezing corrosion inhibition foam drainage scale inhibitor and preparation method thereof

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preparation example Construction

[0037] A preparation method of an antifreeze type corrosion-inhibiting foam discharge and scale inhibitor, comprising the following steps:

[0038] 1) Prepare the anti-scaling main agent: weigh 15-20% by mass of organic phosphoric acid corrosion inhibitor and 4-10% by mass of scale inhibitor, and mix and stir the above-mentioned weighed materials evenly;

[0039] 2) Prepare the main corrosion inhibitor: Weigh 15-20% by mass of organic phosphine corrosion inhibitor and 25-30% by mass of quaternary ammonium salt corrosion inhibitor, and mix and stir the weighed material in step 2) evenly;

[0040] 3) Prepare the main foaming agent: weigh 3-5% by mass of emulsifier and 15-20% by mass of amphoteric surfactant, and mix and stir the weighed material in step 3) evenly;

[0041] 4) Mix and stir the prepared anti-scaling main agent, corrosion inhibitor main agent and foaming main agent evenly, and react at 40°C for 2 hours, then add 5-10% dispersant by mass, and stir to make it Mix ev...

Embodiment 1

[0044] This embodiment provides a kind of antifreeze anti-corrosion anti-foaming anti-foaming anti-scaling agent, it is made of following components according to the following mass percentages: 15% of hydroxyethylidene diphosphonic acid, 20% of 2-hydroxyphosphoryl acetic acid, Alkyl imidazoline quaternary ammonium salt 25%, phosphine machine maleic anhydride copolymer 10%, sulfonated AEO 3 5%, Betaine Lauramidopropyl Phosphate 15%, Polycarboxylate 10%.

[0045] A preparation method of an antifreeze type corrosion-inhibiting foam discharge and scale inhibitor, comprising the following steps:

[0046] 1) Prepare the anti-scaling main agent: weigh 15% by mass of hydroxyethylidene diphosphonic acid and 10% by mass of phosphine-maleic anhydride copolymer, and mix and stir the above-mentioned weighed materials evenly;

[0047] 2) Prepare the main corrosion inhibitor: weigh 20% by mass of 2-hydroxyphosphorylacetic acid and 25% by mass of alkylimidazoline quaternary ammonium salt, a...

Embodiment 2

[0054] This embodiment provides a kind of antifreeze type corrosion-inhibiting bubble discharge and scale inhibitor, which is made of the following components according to the following mass percentages: 20% of hydroxyethylidene diphosphonic acid, 17% of 2-hydroxyphosphorylacetic acid, Alkyl imidazoline quaternary ammonium salt 30%, phosphine machine maleic anhydride copolymer 4%, sulfonated AEO 3 3%, Betaine Lauramidopropyl Phosphate 18%, Polycarboxylate 8%.

[0055] A preparation method of an antifreeze type corrosion-inhibiting foam discharge and scale inhibitor, comprising the following steps:

[0056] 1) Prepare the anti-scaling main agent: weigh 20% by mass of hydroxyethylidene diphosphonic acid and 4% by mass of phosphine-maleic anhydride copolymer, and mix and stir the above-mentioned weighed materials evenly;

[0057] 2) Prepare the main corrosion inhibitor: weigh 17% by mass of 2-hydroxyphosphorylacetic acid and 30% by mass of alkylimidazoline quaternary ammonium s...

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Abstract

The invention belongs to the technical field of natural gas extraction, and particularly provides an anti-freezing corrosion inhibition foam drainage scale inhibitor and a preparation method thereof.The anti-freezing corrosion inhibition foam drainage scale inhibitor is prepared from the following components by mass: 15-20% of an organic phosphoric acid corrosion inhibitor, 15-20% of an organic phosphine corrosion inhibitor, 25-30% of a quaternary ammonium salt corrosion inhibitor, 4-10% of a scale inhibitor, 3-5% of an emulsifier, 15-20% of an ampholytic surfactant, and 5-10% of a dispersingagent. The problems that when a large gas field aims at the problems of wellbore scaling, wellbore corrosion, gas well drainage gas recovery and the like, injected traditional scale inhibitors, corrosion inhibitors and foam drainage agents are single in agent performance, tedious in injection system and large in agent injection workload and do not have the anti-freezing effect are solved, the functions of scale prevention, corrosion inhibition, corrosion prevention, foam drainage and freezing prevention are achieved, and the application prospect is wide. One-dose multi-effect is achieved, themedicament filling efficiency is improved, the medicament filling workload is reduced, the safety risk in the medicament filling process is reduced, and the problem that a traditional medicament is frozen in winter is solved.

Description

technical field [0001] The invention belongs to the technical field of natural gas exploitation, and in particular relates to an antifreeze anti-corrosion foam discharge and scale inhibitor and a preparation method thereof. Background technique [0002] In the process of oil and gas field production gathering and transportation, there are often problems such as wellbore scaling and corrosion. Scaling can cause wellbore blockage, and even block gas wells in severe cases, affecting production. Corrosion has always been a problem to be solved in wellbore. If corrosion is not prevented, the wellbore will be corroded by salt water or acidic water, seriously affecting safety and production. [0003] In addition, with the gradual development of gas fields, the capacity of gas reservoirs and the pressure of gas wells continue to decrease, and the wellbore is prone to liquid accumulation during gas well production. discontinued. In order to solve the problem of wellbore fluid accum...

Claims

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Application Information

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IPC IPC(8): C09K8/54C09K8/584C09K8/52C09K5/20C09K8/86C09K8/88
CPCC09K8/54C09K8/584C09K8/52C09K5/20C09K8/86C09K8/882C09K2208/32
Inventor 华忠志吕玉海刘洋郝冠中高旺斌陈虎宁梅刘丽萍张腾
Owner PETROCHINA CO LTD
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