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Oil-displacing agent for low condensate oil

An oil-displacing agent and oil-condensing technology, applied in the field of oil-displacing agent, can solve problems such as difficulty in oil production work and inability to produce oil.

Inactive Publication Date: 2012-08-01
SHAANXI HAIAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But, unfortunately, many low pour oil reservoirs are located at a depth of 300 meters, and the temperature of the reservoir is less than 15°C, so the low pour oil exists in a non-flowing state, which brings many difficulties to the oil production work, and even cannot be produced.

Method used

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  • Oil-displacing agent for low condensate oil
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  • Oil-displacing agent for low condensate oil

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Embodiment Construction

[0017] 1. Synthesis of ethylenediamine N, N'-sodium diethylsulfonate

[0018] Add ethylenediamine (0.06mol) and a small amount of water into a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, and slowly add a solution of 2-chloroethylsulfonate (0.20mol) dropwise. Adjust the pH of the solution to about 10, react at a suitable temperature for 12 hours, then process the reaction solution, add absolute ethanol, solids are precipitated, filter with suction, and dry to obtain a white solid as an intermediate.

[0019] 2. Synthesis of decanoyl chloride

[0020] Add a certain amount of capric acid into the three-necked bottle, completely dissolve the capric acid at 50°C, then adjust the temperature to about 65°C, slowly add phosphorus trichloride and stir, so that the capric acid and phosphorus trichloride can fully contact and react , reacted at constant temperature for 5 hours and then sealed and allowed to stand for precipitation. The upper layer ...

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Abstract

The invention provides an oil-displacing agent for low condensate oil, which is a Gemini surfactant and ethylene-double (N-ethanesulfonic acid-ten amide) sodium salt. The oil-displacing agent for the low condensate oil can lead the freezing point of the low condensate oil to reduce, so that the low condensate oil is led to be in a flow state at existing oil layer temperature and can be easily extracted with an existing oil extraction method.

Description

technical field [0001] The invention relates to an oil-displacing agent used in the exploitation process of low pour point oil in an oil field. Background technique [0002] Petroleum has different properties and states due to its variety of molecular structures. Within the artificially specified range, it is divided into thin oil and heavy oil according to its flow state; according to its freezing point, it is divided into high pouring oil and low pouring oil, and crude oil with a freezing point temperature less than 15 ° C is called low pouring oil . Low pouring oil exists in a flowable state when the reservoir temperature is higher than its freezing point temperature, and exists in an immobile (pasty solid) state when the reservoir temperature is lower than its freezing point temperature. [0003] In oil extraction, the existing oil extraction methods all require that the oil reservoir and the oil extraction process are in a flowable state, otherwise, the oil in the oil...

Claims

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Application Information

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IPC IPC(8): C09K8/584C07C309/15C07C303/32
Inventor 赵景瑞
Owner SHAANXI HAIAN IND
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