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High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof

A technology of emulsification and scale inhibitor, applied in the field of high temperature resistant oilfield scale inhibitor and its preparation, which can solve the problems of paralysis of oilfield gathering and transportation system, interruption or stop of oilfield exploitation and transportation, pipeline rupture and blockage, etc.

Inactive Publication Date: 2013-04-10
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the oilfield gathering and transportation system, the corrosion and scaling of various pipelines has always restricted the development of the oilfield. The pipeline rupture and blockage caused by pipeline corrosion and scaling have brought huge economic losses to the oilfield. In severe cases, the entire The oilfield gathering and transportation system is paralyzed, resulting in the interruption or stop of oilfield production and transportation
The scale inhibitors described in these patents have good scale inhibition effect under normal conditions, but their performance is no longer ideal when the temperature rises, and they are rarely used in high-temperature oilfield mixed water. Therefore, to solve the problem of high-temperature oilfield mixed water The scaling problem of water pipelines requires a corrosion and scale inhibitor that can withstand high temperature and is suitable for oil fields

Method used

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  • High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Preparation of antiscalant: prepare emulsifying high temperature resistant oil field antiscalant according to the weight ratio of the components in Table 1, add water to the reaction kettle, then add sodium hexametaphosphate, stir for 20 minutes, and then add a single agent Stir the medium liquid single agent for 5 minutes, finally add zinc sulfate and the remaining single agent and stir for 10 minutes to obtain the finished scale inhibitor.

[0015] Table 1 prepares scale inhibitor weight ratio of each agent

[0016]

[0017] The obtained scale inhibitors RZ-01, RZ-02, RZ-03, RZ-04 and RZ-05 are all colorless and transparent liquids.

Embodiment 2

[0018] Embodiment 2 Examples of corrosion and scale inhibition performance evaluation of scale inhibitors:

[0019] Scale inhibitor performance evaluation is based on SY-T5273-2000 performance evaluation method of corrosion inhibitor for oilfield produced water and SY-T5673-1993 performance evaluation method of oilfield antiscalant agent. The test water was prepared with reference to the water quality characteristics of the oil field to prepare the test corrosive solution (see Table 2 for the specific composition of the corrosive solution). The water used to prepare the corrosive solution was distilled water, and the medicine was analytical reagent.

[0020] Table 2 Components of self-made corrosion solution

[0021]

[0022] Take the above-mentioned RZ-01 antiscalant agent, use oil and gas industry standard corrosion test piece (executive standard (SY-5273), material (Q235-A (A3)), specification: 76mm×13mm×2.5mm, surface area 24.21cm 2 )experimenting. According to the in...

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Abstract

The invention relates to the petroleum chemical industry field and in particular to a high-temperature resisting oil field scale inhibitor with an emulsifying function and a preparation method thereof. The scale inhibitor comprises the following components by weight percent: 2-9% of sodium hexametaphosphate, 13-20% of zinc sulfate, 1-3% of emulsifying agent OP-15, 10-18% of amino trimethylene phosphonic acid, 8-16% of 2-phosphonic acid-1,2,4-tricarboxylic acid butane, 4-6% of sodium sulfite and the balance of water. The scale inhibitor provided by the invention has the emulsifying function, the inhibition rate of the high-temperature resisting oil field scale inhibitor is larger than 97%, and the scale inhibiting ratio is larger than 92% in a high temperature environment of 85 DEG C; and the high-temperature resisting oil field scale inhibitor has better scale inhibiting effect on typical scaling of a watering tube of an oil field gathering and transportation system.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a high-temperature resistant oilfield scale inhibitor with emulsifying effect and a preparation method thereof. Background technique [0002] In the oilfield gathering and transportation system, the corrosion and scaling of various pipelines has always restricted the development of the oilfield. The pipeline rupture and blockage caused by pipeline corrosion and scaling have brought huge economic losses to the oilfield. In severe cases, the entire The oil field gathering and transportation system is paralyzed, resulting in the interruption or stop of oil field production and transportation. [0003] The scale in the water-mixed pipeline in the oilfield gathering and transportation system is different from the scale in the general water pipe, because the water-mixed source mainly uses the oilfield produced water, which has a high oil content, resulting in the formation and typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 郭书海李刚吴波张蒋维
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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