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Method for gathering and transporting thickened oil

A heavy oil, gathering and transportation technology, applied in the petroleum industry, cracking, pipeline system, etc., can solve the problems of difficult implementation and long reaction time.

Active Publication Date: 2015-07-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the above-mentioned catalysts or viscosity reducers to catalytically reduce the viscosity of heavy oil, it is necessary to add hydrogen, methane, etc., or to add hydrogen or oxygen donors, which is difficult to implement and takes a long time to react.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First add 0.01g of ferrous sulfate catalyst into 375g of deionized water, then add the mixture and 250g of heavy oil (the dynamic viscosity after degassing and dehydration at 50°C is 3470mPa·s) into a 1L reactor, and control the temperature in the reactor. The temperature is 320°C, the pressure is 6MPa, the reaction is stirred for 20min, and the reaction product is transferred to another 1L reactor. The temperature in the reactor is controlled to be 320°C, the pressure is 0.2MPa, and the reaction is stirred for 10min. The dynamic viscosity after degassing and dehydration at 50°C is 1180mPa·s, and the product oil is sent to the export pipeline.

Embodiment 2

[0028] First add 1.08g of nickel sulfate catalyst into 2.16g of deionized water, then add the mixture and 108g of heavy oil (the dynamic viscosity after degassing and dehydration at 50°C is 3470mPa·s) into a 300mL reactor, and control the temperature in the reactor. The temperature is 160°C, the pressure is 0.4MPa, the reaction is stirred for 35min, and the reaction product is transferred to another 300mL reactor. The temperature in the reactor is controlled to be 160°C, the pressure is 0.2MPa, and the reaction is stirred for 140min. The dynamic viscosity of the oil after degassing and dehydration at 50°C is 1120mPa·s, and the product oil is sent to the export pipeline.

Embodiment 3

[0030] Earlier 0.25g ferrous sulfate, 0.12g vanadyl sulfate and 0.13g molybdenum sulfate catalyst were added in 28.8g deionized water, then this mixture and 120.5g heavy oil (the dynamic viscosity after degassing and dehydrating at 50 ℃ is 3470mPa. s) Put it into a 300mL reactor, control the temperature in the reactor to be 210°C, and the pressure to be 4MPa, stir and react for 60min, move the reaction product into another 300mL reactor, control the temperature in the reactor to be 210°C, and the pressure to be 1.6MPa, stirred and reacted for 50min, the dynamic viscosity of the product oil after the reaction was degassed and dehydrated at 50°C was measured to be 257mPa·s, and the product oil was sent to the export pipeline.

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PUM

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Abstract

The invention discloses a method for gathering and transporting thickened oil. The method comprises the steps of: reacting a mixture under the condition which enables heavy components in the thickened oil to be catalytically cracked, and transporting the obtained product into an outward transportation pipeline. The method is characterized in that the mixture consists of thickened oil, a catalyst and water the weight ratio of which is 1:(0.00004-0.01):(0.02-1.5), the catalyst is one or more of compounds containing iron, cobalt, nickel, vanadium, molybdenum, manganese, copper and zinc, and the reaction consists of a first reaction stage and a second reaction stage. According to the method, no extra hydrogen donor or oxygen donor is needed, the degassed and dewatered dynamic viscosity under 50DEG C is not lower than the viscosity of 1000mPa.s crude oil under the milder condition, the method is convenient to operate, short in reaction time, low in energy consumption, and capable of guaranteeing the viscosity reducing effect, and the normal transportation of the catalyzed and viscosity-reduced thickened oil can be realized.

Description

technical field [0001] The invention relates to a method for gathering and transporting heavy oil, in particular to a method for gathering and transporting heavy oil after catalytic viscosity reduction. Background technique [0002] In the world's oil resources, the geological reserves of heavy oil far exceed the reserves of conventional crude oil. With the increasing demand for oil, the gradual reduction of conventional crude oil resources makes heavy oil have great development value. Heavy oil in the world's oil production production has gradually increased. However, the high content of colloid and asphaltene in heavy oil makes its viscosity and freezing point high, which makes it more difficult to extract and refine heavy oil. [0003] Due to the high viscosity of heavy oil, the fluidity of heavy oil becomes poor during the gathering and transportation process, and the flow resistance increases. It becomes very difficult to lift the wellbore and transport the oil pipe fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/02C10G11/04F17D1/16
Inventor 陈锡荣张天宇许春梅张增丽黄凤兴
Owner CHINA PETROLEUM & CHEM CORP