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Condensate-oil-resistant foam discharging agent, preparation method thereof and application of foam discharging agent

A technology of anti-condensate oil and foam discharge agent, which is applied in chemical instruments and methods, compositions of drilling holes, etc., can solve the problems of insufficient foaming, foam-stabilizing performance and liquid-carrying ability, achieve excellent foaming, facilitate the The effect of large-scale applications

Active Publication Date: 2018-02-02
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the existing foam discharge agents, when the effusion contains condensate oil, the foam discharge agent generally has problems such as foaming, foam stabilization performance and insufficient liquid carrying capacity. An anti-condensate oil foaming agent for oil and its preparation method and application. The foaming agent has excellent foaming and foam stabilization effects under the condition that the bottom-hole fluid contains a large amount of condensate oil, so that it can be produced with liquid and can meet the requirements of drainage. Process requirements for liquid gas recovery

Method used

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  • Condensate-oil-resistant foam discharging agent, preparation method thereof and application of foam discharging agent
  • Condensate-oil-resistant foam discharging agent, preparation method thereof and application of foam discharging agent
  • Condensate-oil-resistant foam discharging agent, preparation method thereof and application of foam discharging agent

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Effect test

Embodiment 1

[0028] This embodiment provides an anti-condensate oil foaming agent, the raw material composition of the anti-condensate oil foaming agent includes:

[0029]

[0030]

[0031] This embodiment also provides the preparation method of the above-mentioned anti-condensate oil foaming agent, which includes the following steps:

[0032] Step 1: Weigh the raw materials according to the composition of the above raw materials, add water into the reaction kettle and heat up to 75°C, then add sodium dodecylsulfonate and sodium fatty alcohol polyoxyethylene ether sulfonate with a main chain length of C20-24 , start the reactor and fully stir for 2.5 hours until the system is uniform to obtain solution A;

[0033] Step 2, after the reactor is cooled to 50°C, add ethanol, dodecyl betaine, perfluorooctane sulfonic acid surfactant, coconut oil fatty acid diethanolamide (Ninal 6501) and main chain to solution A Sodium fatty alcohol polyoxyethylene ether sulfonate with a length of C14-18...

Embodiment 2

[0035] This embodiment provides an anti-condensate oil foaming agent, the raw material composition of the anti-condensate oil foaming agent includes:

[0036]

[0037] This embodiment also provides the preparation method of the above-mentioned anti-condensate oil foaming agent, which includes the following steps:

[0038] Step 1: Weigh the raw materials according to the composition of the above raw materials, add water into the reaction kettle and heat up to 75°C, then add sodium dodecylsulfonate and sodium fatty alcohol polyoxyethylene ether sulfonate with a main chain length of C20-24 , start the reactor and fully stir for 2.5 hours until the system is uniform to obtain solution A;

[0039]Step 2, after the reactor is cooled to 50°C, add ethanol, dodecyl betaine, perfluorooctane sulfonate surfactant, coconut oil fatty acid diethanolamide (Ninal 6501) and main Sodium fatty alcohol polyoxyethylene ether sulfonate with a chain length of C14-18, start the reactor again and s...

Embodiment 3

[0041] This embodiment provides an anti-condensate oil foaming agent, the raw material composition of the anti-condensate oil foaming agent includes:

[0042]

[0043] This embodiment also provides the preparation method of the above-mentioned anti-condensate oil foaming agent, which includes the following steps:

[0044] Step 1: Weigh the raw materials according to the composition of the above raw materials, add water into the reaction kettle and heat up to 75°C, then add sodium dodecylsulfonate and sodium fatty alcohol polyoxyethylene ether sulfonate with a main chain length of C20-24 , start the reactor and fully stir for 2.5 hours until the system is uniform to obtain solution A;

[0045] Step 2, after the reactor is cooled to 50°C, add ethanol, dodecyl betaine, perfluorooctane sulfonate surfactant, coconut oil fatty acid diethanolamide (Ninal 6501) and main Sodium fatty alcohol polyoxyethylene ether sulfonate with a chain length of C14-18, start the reactor again and ...

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Abstract

The invention provides a condensate-oil-resistant foam discharging agent, a preparation method thereof and an application of the foam discharging agent. The condensate-oil-resistant foam discharging agent comprises, in weight percent of 100%, 30%-70% of betaine surfactants, 5%-12% of fluorocarbon surfactants, 2%-5% of cocoanut fatty acid diethanolamide, 2%-11% of sodium fatty alcohol polyoxyethylene ether sulfonate, 5%-9% of sodium dodecylsulphate, 2%-3% of ethyl alcohol and the balance water. The condensate oil content of the foam discharging agent in accumulated liquid of a condensate gas well is within the range of the volume ratio of 0-90%, high temperature resistance of the foam discharging agent reaches 120 DEG C, highest mineralization resistance of the foam discharging agent reaches 30000mg / L, condensate oil resistance of the foam discharging agent reaches 90%, the foam discharging agent has excellent foaming capacity, can meet requirements of a gas recovery by liquid discharging process of the condensate gas well and is applicable to condensate gas wells with high condensate oil production fluids, and large-scale application of on-site gas wells is facilitated.

Description

technical field [0001] The invention belongs to the technical field of oil field chemistry, and relates to an anti-condensation oil foaming agent and a preparation method and application thereof. Background technique [0002] Condensate gas reservoirs play an important role in the development of gas reservoirs in the world. Condensate gas reservoirs are special and complex gas reservoirs characterized by deep burial, high temperature, high pressure, and high content of light hydrocarbons. This type of gas reservoir has special economic value due to its high yield of condensate oil. The content of condensate oil in the produced liquid is high, even as high as 90%-95% by volume, making it difficult to develop. Therefore, its reasonable and efficient development is becoming more and more important. be valued. Prolonging the time of no-liquid gas production, rationally controlling liquid after seeing liquid, and producing gas with liquid are all effective means for the developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 杨晓鹏
Owner PETROCHINA CO LTD
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