A kind of high temperature resistant and high efficiency foam discharge agent
A technology of foam discharge agent and high temperature resistance, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., and can solve problems such as gas wells that cannot use pyridine corrosion inhibitors, compatibility of pyridine corrosion inhibitors, loss of foaming ability, etc. , to achieve excellent biodegradability, good salt resistance, and stable foam performance
Active Publication Date: 2019-04-19
陕西延长青山科技工程股份有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Sapindus has good foam performance in fresh water and mineralized water, but it cannot be compatible with pyridine corrosion inhibitors, so it cannot be used in gas wells injected with pyridine corrosion inhibitors, and it is not suitable for gas wells with a temperature higher than 90 °C
The cavitation agent has good foam stability and strong liquid-carrying ability, but its performance is easily affected by the pH value of the solution, aging phenomenon, and is seriously affected by temperature. It almost loses foaming ability when it is higher than 70°C
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0012] Mix 30 g of erucamide propyl hydroxysulfobetaine, 10 g of N-(dodecyl amidopropylene)-dimethyl ammonium oxide, and 6 g of xanthan gum evenly to obtain a foaming agent.
Embodiment 2
[0014] 30 g of erucamide propyl hydroxysultaine, 10 g of N-(dodecyl amidopropylene)-dimethyl ammonium oxide, and 4 g of xanthan gum were uniformly mixed to obtain a foaming agent.
Embodiment 3
[0016] Mix 30g of erucamidopropyl hydroxysulfobetaine, 10g of N-(dodecyl amidopropylene)-dimethyl ammonium oxide, and 8g of xanthan gum evenly to obtain a foaming agent.
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The invention discloses a high-temperature-resistant and efficient foam drainage agent. The foam drainage agent is prepared from erucamidopropyl hydroxysultaine and N-(dodecamidopropylene) dimethylammonium oxide in a mass ratio of (2-4):1, and the adding amount of xanthan gum is 10%-20% of the total mass of erucamidopropyl hydroxysultaine and N-(dodecamidopropylene) dimethylammonium oxide. The foam drainage agent has better foaming, foam stabilizing and liquid carrying capacities at the temperature of 40-120 DEG C, is good in compatibility with formation water and has quite good salt and calcium and magnesium ion resistant capacity.
Description
technical field [0001] The invention relates to a foaming agent for oil and gas wells. Background technique [0002] Oil and gas wells are in the middle and late stages of development. Due to the reduction of formation pressure, the advancement of edge and bottom water, fracturing, acidification and other operational measures, fluid accumulation occurs at the bottom of the well and in the wellbore, which reduces or even stops the production of natural gas. In order to increase oil and gas production, it is necessary to Foam drainage is a good way to get rid of bottom fluid. Foam drainage gas recovery has the advantages of simple equipment, convenient construction, low cost, wide range of applicable well depths, and no influence on normal production of gas wells. Applications. There are many kinds of foaming agents. Generally, the foaming ability and foam stabilizing ability are good below 70°C. With the increase of ambient temperature, the foaming ability and stability of ...
Claims
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IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 朱瑞龙孙玉鹏姚彬张玉荣张国辉
Owner 陕西延长青山科技工程股份有限公司
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