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A kind of heavy oil storage stability test method and equipment

A technology of storage stability and test method, applied in the field of storage stability test of heavy oil and secondary processed oil

Active Publication Date: 2015-10-28
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The storage stability test method and device of the column have not been reported or patented at present

Method used

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  • A kind of heavy oil storage stability test method and equipment

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Effect test

Embodiment 1

[0013] In October 2009, the device was built in Gaofu Petrochemical Co., Ltd., a China National Petroleum Fuel Oil Company. The Venezuelan super-heavy oil visbreaking oil and the hydrogen-supplying thermal cracking reformed oil were loaded into different pipe strings, and the shipping temperature was 50-55 °C. Storage for 180 days, sampling every three days for analysis in the early stage, and sampling every six days after 30 days, to judge the stability of the upgraded oil based on the viscosity and spot test data, and complete Venezuelan super-heavy oil visbreaking and hydrogen supply thermal cracking upgrading The oil storage stability test for 180 days meets the requirements of long-term storage test and sampling analysis.

[0014] storage time, days Viscosity, mm 2 / s spot test, grade 0 125.2 II 30 118.2 II 60 118.4 II 90 119.9 II 120 122.6 II 150 124.2 II 180 125.0 II

Embodiment 2

[0016] In June 2010, the plant was built in PetroChina Liaohe Petrochemical Company, and the 90-day storage stability test of Venezuelan extra-heavy oil normal residue visbreaking and slag reduction hydrogen supply thermal cracking modified oil was completed in the same way, meeting the test requirements.

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Abstract

The invention relates to a heavy oil storage stability test method and equipment; an oil storage pipe string for simulating the storage and transportation conditions of heavy oil transported by super-large tankers is designed, and the height of the test oil storage pipe string is 10-50 meters, which is set in one or more sections to realize the simulation of various types The height of the oil layer when the tanker is fully loaded; the test string realizes constant temperature storage or temperature control of heavy oil, and the temperature range is 10-120°C; the liquid level of the test string is sealed with inert gas; sampling ports are set at each section of the test string , using sampling analysis at different positions and times, judging the stability of the modified oil through viscosity and spot test data, and measuring the long-term storage stability of the heavy oil by adjusting the storage conditions of the heavy oil and testing the heavy oil stability parameters of different layers; the present invention simulates According to the storage and transportation conditions of heavy oil transported by VLCCs, samples are analyzed according to different storage times, and the stability of oil storage can be judged through viscosity and spot test data, which can guide the transportation, storage and processing of oil products.

Description

technical field [0001] The invention belongs to a method for determining the properties of petroleum hydrocarbons, in particular to a storage stability test method and equipment for heavy oil and secondary processed oil. Background technique [0002] Currently, more than 70% of the world's approximately 10 trillion barrels of remaining oil resources are heavy oil resources. In my country, onshore heavy oil and bitumen resources account for more than 20% of the total oil resources. Oil sands are estimated to have more than 6 billion tons of geological resources and more than 3 billion tons of recoverable resources. The geological resources of oil shale exceed 47 billion tons, the technically recoverable resources exceed 16 billion tons, and the recoverable amount exceeds 12 billion tons. The proportion of unconventional oil (such as various heavy oil, oil sand bitumen, etc.) will gradually increase, and will become one of the important strategic replacement resources in my ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/28
Inventor 张艳梅付兴国侯经纬赵广辉于志敏
Owner PETROCHINA CO LTD
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