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Method for measuring oil content of drilling solid waste

A solid waste and determination method technology, applied in the field of inspection and detection, can solve the problems affecting the accuracy of the results, low sensitivity, etc., and achieve the effects of accelerating the extraction speed, improving the measurement accuracy, and ensuring the detection limit requirements.

Pending Publication Date: 2021-06-22
PETROCHINA CO LTD
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  • Claims
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Problems solved by technology

Due to its low sensitivity, the gravimetric method is only suitable for the determination of oil content in high-concentration samples, and is not suitable for the determination of oil content in samples after resource utilization or harmless treatment; while the upper limit of the determination of ultraviolet and fluorescence methods is very low, if To meet the determination requirements of drilling solid waste with high oil content, it is necessary to reduce the sampling volume and dilute the extract by high multiples, which will affect the accuracy of the results

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  • Method for measuring oil content of drilling solid waste
  • Method for measuring oil content of drilling solid waste
  • Method for measuring oil content of drilling solid waste

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Embodiment Construction

[0038] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0039] figure 1 It is a flowchart of a method for measuring the oil content of drilling solid waste provided by an embodiment of the present disclosure. see figure 1 , the methods for determining the oil content of drilling solid waste include:

[0040] Step S1: Sampling the solid waste to be tested to obtain a sample to be tested.

[0041] In the embodiments of the present disclosure, the amount of solid waste to be tested is generally large, and it is more convenient to use a sample instead of the whole by sampling the solid waste to be tested.

[0042] Exemplarily, when sampling the solid waste to be tested, the mass of the sample to be tested may be determined first, and a certain amount of solid waste to be tested is weighe...

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Abstract

The invention relates to a method for measuring the oil content of drilling solid waste, and belongs to the field of inspection and detection. The method comprises the following steps: sampling to-be-detected solid wastes to obtain a to-be-detected sample; mixing the to-be-detected sample with an n-hexane solvent to obtain a sample solution; performing ultrasonic extraction on the sample solution to obtain an extracted solution; carrying out centrifugal separation on the extracted solution to obtain supernate; carrying out rotary evaporation treatment on the supernate to obtain petroleum substances; dissolving petroleum substances in a tetrachloroethylene solvent to obtain a solution to be detected; measuring the concentration of the petroleum substances in the solution to be measured by adopting an infrared spectrophotometric method; determining the water content of the to-be-detected solid waste; and calculating the oil content of the to-be-detected solid waste according to the mass of the to-be-detected sample, the water content of the to-be-detected solid waste, the capacity of the to-be-detected solution and the concentration of the petroleum substances. The method is simple in extraction process, better in extraction condition and higher in determination accuracy, and does not cause harm to the environment and the health of workers.

Description

technical field [0001] The disclosure relates to the field of inspection and detection, in particular to a method for measuring the oil content of drilling solid waste. Background technique [0002] During the oil drilling process, solid wastes such as drilling cuttings and waste mud will be produced, and these drilling solid wastes contain petroleum substances. The country and the enterprise itself have strict requirements on the harmless, resourceful utilization and disposal of these solid wastes. The percentage of petroleum substances (oil content) in solid waste must meet the relevant national standards before the next step can be carried out. disposal or utilization. [0003] There is no standard in my country for the determination of the oil content of solid waste from drilling. The method for determining the oil content in the soil is disclosed in the related technology. After filtration and separation, the content of petroleum substances is determined by infrared sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3577G01N1/28
CPCG01N21/3577G01N1/28
Inventor 宫航周非江丽谢倩雯徐波徐炳科李惠
Owner PETROCHINA CO LTD
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