A kind of heavy oil storage stability test method and equipment

A technology of storage stability and test method, applied in the field of determination of properties of petroleum hydrocarbons

Active Publication Date: 2011-12-21
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

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0013] In October 2009, the device was built in Gaofu Petrochemical Co., Ltd. of China National Petroleum Fuel Oil Company. The Venezuelan super-heavy oil visbreaking and hydrogen-supplying thermal cracking reformed oil were respectively loaded into different pipe strings. The shipping temperature was 50-55℃ Stored for 180 days, samples were taken every three days for analysis in the early stage, and samples were taken and analyzed every six days after 30 days. The stability of the upgraded oil was judged by the viscosity and spot test data, and the visbreaking and hydrogen supply thermal cracking of Venezuelan super heavy oil were completed. Stability test of oil storage for 180 days, meeting 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 ...

Embodiment 2

[0016] In June 2010, the device was built in PetroChina Liaohe Petrochemical Company, and the 90-day stability test of normal residue visbreaking of Venezuelan super-heavy oil, slag reduction and hydrogen-supply thermal cracking upgraded oil was completed in the same way, and the test requirements were met.

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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 measuring 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] At present, among the approximately 10 trillion barrels of remaining oil resources in the world, more than 70% are heavy oil resources. In my country, onshore heavy oil and asphalt resources account for more than 20% of the total petroleum 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 it will become one of my country's important strategic re...

Claims

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Application Information

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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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