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Demulsification and dehydrating agent for treating aged heavy oil and preparation method thereof

A dehydrating agent and demulsification technology, applied in chemical instruments and methods, chemical dehydration/demulsification, dissolution, etc., can solve the problem of increasing the difficulty of sewage treatment, unsatisfactory economic, technological, and environmental protection, and inapplicable aging Heavy oil and other problems, to achieve the effect of simple and easy processing, low cost and simple composition

Inactive Publication Date: 2016-02-10
毕立师
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this dehydration demulsifier is not suitable for aging heavy oil
Moreover, the intervention of surfactants and the increase of various chemical agents have increased the difficulty of subsequent sewage treatment, which is not ideal in terms of economy, technology, and environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First pour water into the enamel reaction kettle, then add diammonium phosphate into the reaction kettle, and add it while stirring until it is completely dissolved, which is the demulsification and dehydration agent for treating aged heavy oil. The mass ratio of diammonium phosphate to water is 1:3.

[0024] Performance Testing:

[0025] (1) First, heat 1L of the aged heavy oil to 85°C, add 350 mg of the demulsifying dehydrating agent prepared in Example 1 into the aged heavy oil with a syringe, stir and mix evenly, settle for 6 hours, and then separate the water, Purified oil after treatment is obtained. The water content of the purified oil is 1.92%, and the oil content of the sewage is 320mg / L, but the middle transition layer is slightly more.

[0026] (2) First, heat 1L of the aged heavy oil to 90°C, add 400 mg of the demulsification and dehydrating agent prepared in Example 1 into the aged heavy oil with a syringe, stir and mix evenly, settle for 6 hours, and th...

Embodiment 2

[0031] First pour water into the enamel reaction kettle, then add diammonium phosphate into the reaction kettle, and add it while stirring until it is completely dissolved, which is the demulsification and dehydration agent for treating aged heavy oil. The mass ratio of diammonium phosphate to water is 0.1:1.

[0032] Performance Testing:

[0033] First, heat 10L of the aged heavy oil to 87°C, add 5500 mg of the demulsifying dehydrating agent prepared in Example 2 into the aged heavy oil, stir and mix evenly, settle for 10 hours, and then separate the water to obtain the treated purified oil . The water content of the purified oil is 1.83%, and the oil content of the sewage is 330mg / L, but the middle transition layer is slightly more.

Embodiment 3

[0035] First pour water into the enamel reaction kettle, then add diammonium phosphate into the reaction kettle, and add it while stirring until it is completely dissolved, which is the demulsification and dehydration agent for treating aged heavy oil. The mass ratio of diammonium phosphate to water is 10:1.

[0036] Performance Testing:

[0037] First, heat 100L of the aged heavy oil to 87°C, add 35g of the demulsifying dehydrating agent prepared in Example 3 into the aged heavy oil, stir and mix evenly, settle for 15 hours, and then separate the water to obtain the treated purified oil . Purified oil contains 1.00% water, and sewage contains 540mg / L of oil.

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PUM

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Abstract

The invention belongs to the field of oil recovery techniques in the petroleum industry, specifically to a demulsification dehydrating agent for treating aged heavy oil, comprising diammonium phosphate and water mixed at any ratio. The demulsification dehydrating agent prepared in the invention has the advantages of simple composition, convenient operation, low cost and applicability to a variety of aged crude oil of different oil quality. Under the condition that 450 to 500 mg / L of the demulsification dehydrating agent is added into aged crude oil, after elution of the aged crude oil, water content is less than 2.0%, and oil content in sewage is less than 600 mg / L, reaching industrial standard. The invention further provides a preparation method for the agent. The preparation method comprises the following steps: injecting water into an enamel reaction vessel; and then adding diammonium phosphate into the reaction vessel with stirring until diammonium phosphate is completely dissolved so as to obtain the demulsification dehydrating agent for treating aged heavy oil. The preparation method is reasonable and simple and is easily applicable to industrial production.

Description

technical field [0001] The invention belongs to the technical field of oil recovery in the petroleum industry, and in particular relates to a demulsification and dehydration agent for treating aged heavy oil and a preparation method thereof. Background technique [0002] With the advent of tertiary oil recovery and residual recovery, a variety of resinous surfactants, acid-base chemicals, and a large number of macromolecules and organic polymers are used, which makes it difficult to break the emulsion of crude oil. The corresponding intermediate transition layer (crude oil emulsion) increases. In addition, the long-term storage of emulsions formed during drilling operations and crude oil transportation, dirty oil recovered from sewage treatment, recovered ground oil, and oily suspended matter produced under the action of bacteria lead to a reduction in light components, colloids, asphaltene, etc. Corresponding increase, resulting in the increase of the surface active substa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04B01F1/00
Inventor 毕立师
Owner 毕立师