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Surfactant oil displacement system and preparation method

A surfactant flooding and surfactant technology is applied in the field of surfactant flooding system and preparation, which can solve the problems of large adsorption loss and affecting oil displacement efficiency.

Active Publication Date: 2021-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the prior art that the surfactant oil displacement system has a large adsorption loss in the formation and affects the oil displacement efficiency, the present invention provides a surfactant oil displacement system and a preparation method

Method used

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  • Surfactant oil displacement system and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1kg contains 0.3%wt sodium petroleum sulfonate, 0.05%wt HPAM, 0.1%wt Na 2 CO 3 Add 50 g of methyltriethoxy silicone oil and 5 g of aminopropylmethyldimethoxysilane into the solution, and mix them uniformly to prepare the displacement system solution 1a.

Embodiment 2

[0032] Add 30g methyl hydroxy silicone oil (1.5% hydroxyl content) and 4g aminopropyltriethoxysilane to 1kg solution containing 0.1%wt oleic acid propyl betaine and 0.04%wt HPAM, and mix well to make a displacement system Solution 2a.

Embodiment 3

[0034] 1kg contains 0.2% wt sodium lauryl polyoxyethylene (6) sulfate, 0.1% wt HPAM, 0.2% wt Na 2 CO 3 Add 0.5 g of methyl hydroxy silicone oil (hydroxyl content 0.8%) and 0.1 g of aminopropyl trimethoxysilane into the solution, and mix them uniformly to prepare displacement system solution 3a.

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Abstract

The invention discloses a surfactant oil displacement system and a preparation method thereof. The surfactant oil displacement system comprises a surfactant, an organosilicon compound and a silane coupling agent, based on the weight of the surfactant being 100%, the content of the organosilicon compound is 0.05%-10%; and the content of the silane coupling agent is 0.01%-5%. The preparation method comprises the step of adding the organic silicon compound and the silane coupling agent into the surfactant according to the dosage to prepare the surfactant oil displacement system. Adsorption of the surfactant in the stratum can be reduced, so that the oil displacement effect is improved, and the economic benefit is improved.

Description

technical field [0001] The invention relates to the technical field of oil field recovery and displacement, and furthermore, relates to a surfactant displacement system and a preparation method. Background technique [0002] Petroleum is an important natural resource and national strategic material. With the development of social economy, the demand for oil is also increasing. In order to improve oil recovery, people have developed a variety of oil displacement technologies, among which the oil displacement system involving surfactant is an important technical means. The invention and application of this technology have greatly improved the oil recovery of oil fields and increased economic benefits. [0003] But at the same time, one of the most difficult problems in any flooding system involving surfactants is the loss of a large amount of surfactants in the reservoir during the displacement process. There are many physical-chemical mechanisms that cause the retention an...

Claims

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Application Information

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IPC IPC(8): C09K8/584
Inventor 沈少春李应成张卫东沙鸥
Owner CHINA PETROLEUM & CHEM CORP
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