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Foam scrubbing agent composition as well as preparation method and application thereof

A technology of composition and foam discharge agent, which is applied in the directions of drilling composition, carbon preparation/purification, chemical instruments and methods, etc., can solve the problems of high cost and complicated preparation process of nano-particles, and achieves low cost and high structure. The effect of green environmental protection and half-life slowing down

Pending Publication Date: 2022-07-22
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, surface-modified SiO 2 The preparation process of such nanoparticles is cumbersome and costly

Method used

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  • Foam scrubbing agent composition as well as preparation method and application thereof
  • Foam scrubbing agent composition as well as preparation method and application thereof
  • Foam scrubbing agent composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Under the conditions of normal temperature and pressure, take carboxybetaine (x=11, n=6), prepare the carboxybetaine solution of 0.5% concentration, add rice husk according to the mass ratio of carboxybetaine and rice husk-derived carbon particles 50:1 The carbon particles are derived and mixed to obtain a foam release agent composition.

[0034] The preparation method of rice husk-derived carbon particles of this embodiment: the naturally air-dried rice husks are placed in a tube furnace, and the 2 The temperature was raised to 700°C under protective conditions (the heating rate was 10°C / min), and then calcined at a constant temperature of 700°C for 2 hours. After natural cooling, the rice husk biochar was obtained; the rice husk biochar was placed in a ball mill (including 14 Small steel balls with a diameter of 6.35 mm and 8 large steel balls with a diameter of 9.5 mm), uniformly pulverized for 30 minutes at 300 Hz to obtain rice husk-derived carbon powder with a par...

Embodiment 2

[0037] Under the condition of normal temperature and pressure, take carboxybetaine (x=13, n=8), prepare the carboxybetaine solution of 0.5% concentration, add rice husk according to the mass ratio of carboxybetaine and rice husk-derived carbon particles 10:1 The carbon particles are derived and mixed to obtain a foam release agent composition.

[0038] The preparation method of rice husk-derived carbon particles of this embodiment: the naturally air-dried rice husks are placed in a tube furnace, and the 2 The temperature was raised to 700°C under protective conditions (the heating rate was 10°C / min), and then calcined at a constant temperature of 700°C for 2 hours. After natural cooling, the rice husk biochar was obtained; the rice husk biochar was placed in a ball mill (including 14 Small steel balls with a diameter of 6.35mm and 8 large steel balls with a diameter of 9.5mm), uniformly pulverized for 25 minutes at 300Hz to obtain a rice husk-derived carbon powder with a parti...

Embodiment 3

[0041] Under normal temperature and pressure conditions, take carboxybetaine (x=15, n=10), prepare a 0.5% concentration of carboxybetaine solution, add rice husk according to the mass ratio of carboxybetaine and rice husk-derived carbon particles 5:1 The carbon particles are derived and mixed to obtain a foam release agent composition.

[0042] The preparation method of rice husk-derived carbon particles of this embodiment: the naturally air-dried rice husks are placed in a tube furnace, and the 2 The temperature was raised to 700°C under protective conditions (the heating rate was 10°C / min), and then calcined at a constant temperature of 700°C for 2 hours. After natural cooling, the rice husk biochar was obtained; the rice husk biochar was placed in a ball mill (including 14 Small steel balls with a diameter of 6.35mm and 8 large steel balls with a diameter of 9.5mm), uniformly pulverized for 25 minutes at 300Hz to obtain a rice husk-derived carbon powder with a particle size...

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Abstract

The invention discloses a foam scrubbing agent composition as well as a preparation method and application thereof, the foam scrubbing agent composition is prepared from the following components in parts by weight: 1 part of a foaming agent, 0.01-10 parts of a foam stabilizer and the balance of water, the foaming agent is a betaine surfactant, and the foam stabilizer is rice hull derived carbon particles; the betaine surfactant contained in the foam scrubbing agent composition contains functional groups such as polyether, so that the foam scrubbing agent composition has acid-resistant and salt-resistant properties, has relatively high foaming volume and half-life period, and can be suitable for a gas well foam drainage process under harsh conditions such as acid gas containing, high salinity and the like; the rice hull derived carbon particles are contained, and the half-life period of foam is obviously slowed down in application due to the fact that rice hull derived carbon has good foam stabilizing performance, so that the action time of foam liquid drainage is prolonged, and the effect of foam liquid drainage is improved. Moreover, the foam stabilizer can be suitable for severe conditions such as hypersalinity and acidic gas containing conditions, and can be used as a foam stabilizer for foam drainage of a natural gas well of an oil and gas field.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development engineering, in particular to a foam-discharging agent composition and a preparation method and application thereof. Background technique [0002] With the continuous development of natural gas fields, formation water will continue to flow into natural gas wells, forming two-phase flow of gas and water, increasing fluid flow energy loss, weakening gas production capacity, and sharply decreasing production. In addition, due to the physical barrier effect of formation water around natural gas wells on natural gas, a large amount of gas and hydrocarbons in the formation cannot be produced smoothly, which is the so-called water lock effect. Research and practice have proved that drainage gas recovery technology is an effective means to ensure the continuous production of gas wells. Among them, foam drainage technology is the most widely used drainage gas recovery technology due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C09K8/60C09K8/584C01B32/05
CPCC09K8/58C09K8/60C09K8/584C09K8/604C01B32/05C01P2004/61
Inventor 韩薇薇董三宝姬悦燕永利吴亚
Owner XI'AN PETROLEUM UNIVERSITY
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