Fireflooding chemical ignition combustion improver and ignition method

An ignition-supporting and fire-flooding technology, which is applied in the direction of fuel additives, fuels, and liquid carbon-containing fuels, can solve the problems of high ignition costs, uneven heating, and large inapplicability to deep oil reservoirs, and achieves low operational risk and high ignition efficiency. Good reliability and the effect of improving oil production efficiency of fire flooding

Inactive Publication Date: 2016-03-02
PETROCHINA CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

When the reservoir is too deep, the heat loss along the way will increase and the preheating effect will become worse if the hot fluid injection method is adopted
[0007] The electric heater method is to use the cable to send the heater into the oil well to heat the injected air, so as to promote the oxidation reaction speed of crude oil to achieve ignition, but this method has problems of uneven heating, overheating of the heater, and large power loss along the way. Applicable to problems such as deep oil reservoirs
[0008] The combustion-supporting method of crude oil and platinum / palladium catalyst is to mix crude oil and platinum / palladium catalyst evenly in a certain proportion, and inject it into the oil layer by means of steam carrying. The catalyst reduces the activation energy of crude oil oxidation reaction, and then reduces the threshold temperature of combustion to achieve ignition. This method exists The platinum / palladium catalyst is expensive and has the disadvantages of high ignition costs

Method used

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  • Fireflooding chemical ignition combustion improver and ignition method

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Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a fire flooding chemical ignition combustion accelerant, including A component and B component;

[0044] A component includes: carbon powder and iron acetylacetonate; B component includes: carbon powder, sulfur, magnesium aluminum powder (mixed in conventional proportions);

[0045] In terms of mass percentage, the dosage ratio of each component is respectively: 60% of iron acetylacetonate, 15% of carbon powder, 15% of magnesium aluminum powder and 10% of sulfur.

[0046] Above-mentioned fire flooding chemical ignition combustion accelerant is prepared like this:

[0047] Grind the raw materials of component A and component B to a fineness of more than 200 mesh (pass through a 200 mesh sieve), mix them separately (mechanical mixing according to conventional methods), and obtain component A powder and component B powder;

[0048] Use the extrusion method to granulate the powder of component A and powder of component B respectively, with a partic...

Embodiment 2

[0058] This embodiment provides a fire flooding chemical ignition combustion accelerant, including A component and B component;

[0059] A component includes: chromium and chromium oxide, cobalt naphthenate; B component includes: carbon powder, sulfur, magnesium aluminum powder (combined in conventional proportions);

[0060] In terms of mass percentage, the dosage ratio of each component is respectively: 10% of cobalt naphthenate, 60% of chromium and chromium oxide, 10% of carbon powder, 16% of magnesium aluminum powder, and 4% of sulfur.

[0061] Above-mentioned fire flooding chemical ignition combustion accelerant is prepared like this:

[0062] Grind the raw materials of component A and component B to a fineness of more than 200 mesh (pass through a 200 mesh sieve), mix them separately (mechanical mixing according to conventional methods), and obtain component A powder and component B powder;

[0063] Use the extrusion method to granulate the powder of component A and pow...

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Abstract

The invention provides a fireflooding chemical ignition combustion improver. The fireflooding chemical ignition combustion improver comprises a component A and a component B, wherein the component A takes up 30-70 wt% of the weight percentage, the component B takes up 30-70 wt% of the weight percentage, and the total weight percentage is 100%; the component A comprises at least one of carbon powder, clay, metal, metal oxide and metal salt; the component B comprises at least three of carbon powder, sulphur, rosin, nitrocotton, pulverized coal, phenolic resin, aluminum powder and magnesium powder. The invention further provides a fireflooding chemical ignition method, wherein the fireflooding chemical ignition combustion improver is used. The fireflooding chemical ignition combustion improver is safe in operation and good in ignition reliability. The fireflooding chemical ignition method can achieve quick ignition under an aerobic condition at the formation temperature of about 250 DEG C and improve fireflooding oil production efficiency.

Description

technical field [0001] The invention relates to a fire-flooding chemical ignition combustion aid and an ignition method, belonging to the technical field of petroleum fire-flooding exploitation. Background technique [0002] Fire flooding is to inject oxygen-containing gas, such as air, to burn a small part of crude oil in the reservoir, and the combustion generates high temperature and high pressure to achieve the purpose of oil displacement. It has the advantages of viscosity reduction and multiple displacement effects, high recovery, wide application range and low cost, and has broad application prospects. [0003] Realizing safe and effective ignition is the primary key technology to ensure the success of fire flooding oil recovery. [0004] The ignition law of oil recovery by fire flooding includes three stages: low-temperature oxidation, cracking and high-temperature oxidation of crude oil. During the ignition process, the crude oil is oxidized at low temperature fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/12C10L1/23C10L1/198C10L1/188C10L1/30
CPCC10L1/106C10L1/12C10L1/1208C10L1/1216C10L1/1275C10L1/188C10L1/198C10L1/1988C10L1/305C10L2200/0204C10L2200/0231C10L2200/024C10L2200/025C10L2200/0254C10L2200/0263C10L2200/04C10L2270/00C10L2300/40
Inventor 张守军郎宝山黄平焦爱红黄小雷王杰于浩高忠敏鲁笛许丹黄腾于笮张长胜
Owner PETROCHINA CO LTD
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