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Crude oil demulsifier technical evaluation method

An evaluation method and technology of demulsifier, which can be used in the fields of dehydration/demulsification by chemical methods, preparation of instruments and samples for testing, etc., which can solve problems such as lack

Active Publication Date: 2020-07-31
BC P INC CHINA NAT PETROLEUM CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It can be seen that at present, domestic oilfields lack a systematic evaluation method that takes into account the effect of demulsification and dehydration of crude oil and the cost of unilateral liquid volume, the weight relationship between the effect of demulsification and dehydration of crude oil and the effect of sewage treatment, and the quantitative optimization of multiple crude oil demulsifier products

Method used

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  • Crude oil demulsifier technical evaluation method
  • Crude oil demulsifier technical evaluation method
  • Crude oil demulsifier technical evaluation method

Examples

Experimental program
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Effect test

Embodiment 1

[0108] Taking the technical evaluation of crude oil demulsifier in the joint station of Liaohe Oilfield Oil Production Plant as an example, the test parameters include dehydration temperature and dosing concentration, and these parameters are determined and provided by the on-site production department. According to the technical evaluation method of the present invention, the settling time monitoring points are 0.5h, 1h, 3h, 5h, 8h, and 12h; there are three reference demulsifier samples that are numbered 1-P, 2-P, and 3-P according to the regulations in the method. , each participating sample includes 3 parallel samples (see Table 2).

[0109] Table 2 Evaluation test original record form

[0110] Dehydration temperature: 85℃ Dosing concentration of demulsifier: 150mg / l

[0111]

[0112]

[0113] Note: The measured water content of 100mL crude oil emulsion before dosing is 24mL.

[0114] Description of the evaluation test: Pour 100mL of uniformly mixed water-containing...

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Abstract

The invention provides a crude oil demulsifier technical evaluation method which comprises the following steps: (1) obtaining the dehydration rate of a sample, and calculating a dehydration rate scoreaccording to the weight value; (2) obtaining the oil content of the sewage of the sample, and calculating the oil content score of the sewage according to the weight value; (3) obtaining the dehydration rate of the sample, and calculating a dehydration rate score according to the weight value; (4) obtaining an oil-water interface condition score of the sample; (5) obtaining the single-prescription liquid medicine consumption of the sample, and calculating the score of the single-prescription liquid medicine consumption according to the weight value; and (6) calculating the total score by using the results obtained in the steps (1)-(5) according to a centesimal system.

Description

technical field [0001] The invention relates to the field of oil exploitation, in particular, the invention relates to a technical evaluation method of a crude oil demulsifier. Background technique [0002] As the development of Liaohe Oilfield enters the middle and later stages, the water cut in major oil areas is generally above 80%. The main reason is that in order to maintain the stable production of crude oil, the adoption of various measures to increase production has resulted in a major change in the properties of the produced fluid, making it more difficult to dehydrate crude oil in the produced fluid; the cost of crude oil treatment chemicals and sewage treatment chemicals in the fluctuation period has increased And so on a series of questions. In actual production, there is a contradiction between the treatment effect of crude oil demulsifier and the cost of single liquid volume, and the weight relationship between crude oil demulsification dehydration and sewage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/04G01N1/28C10G33/04
CPCG01N15/04G01N1/28C10G33/04
Inventor 任红宇林琳李泽勤刘振宁王宝峰刘畅赵慧铃宁甲清高鹏任志铭宁佳
Owner BC P INC CHINA NAT PETROLEUM CORP
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