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An eco-friendly oil field oil displacement agent

An environment-friendly, oil-displacing agent technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., to achieve the effects of reducing viscous force, improving recovery, and good profile control and water shutoff effect

Active Publication Date: 2020-07-28
西安凯尔文石化助剂制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the EOR of the above-mentioned technical solutions is only 17.6%-21.6%, and there is still room for further improvement

Method used

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  • An eco-friendly oil field oil displacement agent
  • An eco-friendly oil field oil displacement agent
  • An eco-friendly oil field oil displacement agent

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Experimental program
Comparison scheme
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Embodiment Construction

[0029] The following specific embodiments will further describe the present invention in detail.

[0030] Mix emulsifier, ester compound, wetting agent and water in a certain proportion to prepare oil displacing agent, listed in Table 1.

[0031] Table 1

[0032]

[0033] The above-mentioned oil-displacing agent, polyacrylamide and water were mixed in a certain proportion to prepare an oil-displacing agent system, which is listed in Table 2.

[0034] Table 2

[0035] Numbering Mass fraction of oil displacing agent Molecular weight of polyacrylamide (mass fraction) Example 1 0.5％ 15 million (0.2%) Example 2 0.5％ 15 million (0.2%) Example 3 0.5％ 15 million (0.2%) Example 4 0.5％ 15 million (0.2%) Example 5 0.5％ 15 million (0.2%) Example 6 0.5％ 15 million (0.2%) Comparative example 1 0.5％ 15 million (0.2%) Comparative example 2 0.5％ 15 million (0.2%) Comparative example 3 0.5％ 15 million (0.2%) ...

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Abstract

The invention relates to an ecological environment-friendly oil displacement agent for oil fields. The oil displacement agent is prepared from, by weight percentage, 60% of an emulsifier, 2% of an ester compound, 1.5% of a wetting agent and the balance water. According to the oil replacement agent, viscosity reduction treatment of the oil displacement agent on thick oil can be achieved to the maximum extent, the viscous force of the thick oil in the pores of rock can be greatly reduced, and a better profile control water blocking effect can be achieved. The oil displacement agent is matched with a polymer for use, correspondingly the oil displacement efficiency can be effectively improved, and the recovery ratio of the thick oil can be increased.

Description

technical field [0001] The invention relates to an ecological environment-friendly oil field oil displacement agent. Background technique [0002] The development of an oil field is divided into three processes: first, use natural energy such as the elastic energy of the reservoir fluid, the hydraulic pressure of the edge water, the gravity of the crude oil itself, and the gas cap pressure to carry out extraction, which is called primary oil recovery. The recovery rate is about 20% to 30%; second, when the natural energy is gradually consumed and there is no production capacity, measures such as gas injection and water injection are artificially taken to maintain the pressure of the reservoir to continue production, that is, gas flooding and water flooding. Secondary oil recovery, the recovery rate is about 20% to 40%; third, after replenishing the reservoir pressure and still unable to continue the production, artificial injection of chemical substances, solvents, heat carr...

Claims

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Application Information

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IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 不公告发明人
Owner 西安凯尔文石化助剂制造有限公司
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