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Crude oil viscosity reducing device and preparation method of crude oil viscosity reducing device

A technology for reducing viscosity and crude oil, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as poor flow ability of heavy oil, and achieve the effects of lowering freezing point, easy installation, and improving fluidity.

Active Publication Date: 2013-11-06
SHANGHAI JINGTENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a crude oil viscosity reducer, which solves the technical problem of poor flow ability of heavy oil in oil reservoirs, well bores and surface transportation pipelines in the prior art

Method used

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  • Crude oil viscosity reducing device and preparation method of crude oil viscosity reducing device
  • Crude oil viscosity reducing device and preparation method of crude oil viscosity reducing device
  • Crude oil viscosity reducing device and preparation method of crude oil viscosity reducing device

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Experimental program
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Effect test

Embodiment 1

[0015] The crude oil viscosity reducer of the present invention is composed of a rod-shaped alloy body, the rod-shaped alloy body is composed of magnet steel and rare earth elements, and the rare earth elements are composed of cerium group elements, yttrium group elements and scandium elements , the weight ratio between the cerium group element, yttrium group element, scandium element and the magnetic steel is 4-6:3-4:1-2:20, and the cerium group element is composed of cerium element, praseodymium element, Neodymium element and samarium element, in the cerium group elements, the weight ratio of the cerium element, praseodymium element, neodymium element and samarium element is 0.8~1.2:0.8~1.2:1.8~2.2:0.8~1.2, the described The yttrium group element is composed of holmium element, erbium element and dysprosium element, and in the yttrium group element, the weight ratio of the holmium element, erbium element and dysprosium element is 1.3-1.8:0.4-0.6:1.3-1.8.

[0016] Further, th...

Embodiment 2

[0022] The viscosity reduction test of the crude oil viscosity reducer of the present invention is as follows:

[0023] The oil wells in an oilfield have serious wax deposition and high viscosity, which requires frequent hot washing of the oil pipelines, which increases the cost of crude oil production. These wells account for 90% of the total number of wells in operation.

[0024] In order to explore a simple method of magnetic anti-wax viscosity reduction and reduce the number of hot washes of the oil pipeline, the inventor conducted a research on wellhead magnetic viscosity reduction in an oil field.

[0025] Table 1: Basic conditions of the wellhead strong magnetic wax anti-wax viscosity reduction test well in an oilfield

[0026]

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Abstract

The invention discloses a crude oil viscosity reducing device which is formed by a rod-shaped alloy body. The rod-shaped alloy body consists of magnetic steel and rare earth element, wherein the rare earth element consists of cerium group element, yttrium group element and scandium element; and the weight ratio of the cerium group element to the yttrium group element to the yttrium group element to the magnetic steel is 4 to 6:3 to 4:1 to 2:20. The invention also provides a preparation method of the crude oil viscosity reducing device. The device changes the electronic motion trail through the effects on various magnetic moments of crude oil molecule and paraffin molecule by strong magnetic, so that the polymerism between molecule and molecular group is weakened, the molecular combination gets loose, and the internal friction is weakened, the flowability of crude oil is improved, the viscosity of crude oil is greatly reduced, and the energy consumption during extraction and transportation is saved.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to chemical equipment, in particular to a crude oil viscosity reducer and a preparation method thereof. Background technique [0002] High viscosity, wax deposition and scaling directly affect the efficiency and cost of oil recovery, and have always been the focus and difficulty of oilfield operations. In the prior art, the viscosity of petroleum is reduced by heating method, thin oil blending method, viscous modification of heavy oil or chemical agent viscosity reduction method; mechanical wax removal, chemical wax prevention or microbial wax prevention methods are used to remove wax in petroleum. Waxy; descales mechanically. When the above technologies are used, problems such as pollution and energy consumption will occur. The problems of wax formation and scaling will also directly affect crude oil production and work efficiency, increase the number of operations and costs, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/524C09K8/536C09K8/58
Inventor 宋雪婷
Owner SHANGHAI JINGTENG TECH
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