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A Heating System for Crude Oil Transportation by Utilizing the Thermal Energy of Oilfield Reinjection Water

A technology of oilfield water reinjection and heating system, which is applied in the field of crude oil export heating system, can solve the problems of not suitable for station warehouse transformation and maintenance, damage to water source heat pump, heat exchanger scaling and corrosion heating temperature, etc., to achieve intelligent integration Optimized operation, convenient disassembly, replacement or maintenance, and improved heat exchange efficiency and effect

Active Publication Date: 2022-03-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention directly uses the water source heat pump to directly heat the crude oil, heating the crude oil to coke, which will affect the heating efficiency in the slightest, and damage the water source heat pump in severe cases. In addition, the reconstruction project of the station is large, and the original heating furnace needs to be removed. Once the water source heat pump is damaged, the The operation of the station warehouse brings the direct risk of outage, which is not suitable for the transformation and maintenance of the station warehouse
[0010] The utilization of the above-mentioned heat energy has problems such as fouling and corrosion of the heat exchanger and low heating temperature, so it has not been widely used.
At present, the cost of equipment for the utilization of associated waste heat in this part of the formation is relatively high, and the utilization rate is low

Method used

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  • A Heating System for Crude Oil Transportation by Utilizing the Thermal Energy of Oilfield Reinjection Water
  • A Heating System for Crude Oil Transportation by Utilizing the Thermal Energy of Oilfield Reinjection Water
  • A Heating System for Crude Oil Transportation by Utilizing the Thermal Energy of Oilfield Reinjection Water

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Experimental program
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Effect test

Embodiment 2

[0036] In the heat exchange shell 22, a refrigerant vaporization device 23 is also installed between the heat exchange medium return line 17 and the inlet of the refrigerant coil 24, and the heat transfer medium pipeline 16 and the heat exchange medium outside the heat exchange device 15 A quick connector is also housed in the return line 17 .

Embodiment 3

[0038] The heat exchange shell 22 is a cylindrical body, and the outer portion of the cylindrical body is provided with annular heat exchange fins 25 made of titanium alloy. The heat exchanging device 15 is submerged in the refilling water 14 of the oil field, has heat exchanging fins 25 on the outside, and is filled with a heat conducting medium 21 inside. The heat exchange medium 27 passes through the heat exchange medium return line 17, flows into the heat exchange device 15, and passes through the refrigerant vaporization device 23 to convert the heat exchange medium 27 from liquid to gaseous state, the temperature drops, flows through the refrigerant coil 24, and passes through the heat transfer medium 21 And the heat exchanging fins 25 absorb the heat in the reinjection water 14 of the oil field. The heat exchange medium 27 after absorbing heat is transmitted to the heating device 19 through the heat transfer medium pipeline 16 .

Embodiment 4

[0040] There are at least four heat exchange devices 15 in the heat exchange skid box 13, and the heat transfer medium pipeline 16 and the heat exchange medium return pipeline 17 of the four heat exchange devices 15 are connected in parallel. The heat exchange device 15 is installed in the heat exchange skid box 13, and is connected with the heat exchange medium return pipeline 17 and the heat transfer medium pipeline 16 through quick joints, and the installed heat exchange device 15 can be adjusted according to the processing capacity of the reinjection water 14 in the oil field quantity.

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Abstract

The invention is a crude oil export heating system utilizing the heat energy of reinjection water in an oil field, which can absorb heat from the reinjection water and convert the absorbed heat in time to heat the crude oil for export, saving energy and reducing consumption. The injected water recovery heat exchange skid in the present invention is provided with a heat exchange device equipped with a refrigerant coil and a heating device equipped with a refrigerant compressor and a heat exchanger. The refrigerant coil in the heat exchange device is immersed in the heat exchange shell In the heat conduction medium of the body, the circulation between the refrigerant coil and the refrigerant medium pipe network of the heat exchanger is formed through the heat transfer medium pipeline and the heat exchange medium return pipeline; The pipeline is connected, and the other end is connected to the crude oil export pipeline; the oilfield reinjection water is connected to the injection water inlet pipeline of the heat exchange skid box through the injection water inlet pipeline, and is injected into the formation after being connected with the injection water outlet pipeline and the injection water reinjection pipeline , effectively improving the thermal efficiency of the heat exchange device.

Description

technical field [0001] The invention relates to a device for utilizing associated geothermal heat in the injection and production process of an oil field, in particular to a crude oil transport heating system utilizing the heat energy of reinjected water in an oil field, which can absorb heat from the reinjected water and convert the absorbed heat in time to produce crude oil External heating, saving energy and reducing consumption. Background technique [0002] The injection and production process of oilfield is that the oil well lifts the production fluid in the formation to the ground through the lifting equipment. During the oil production process, the production fluid of the oil well is actually a mixture of oil, gas, water, mud, sand and other impurities. The pipeline network is transported to each gathering station. In the gathering and transportation station, the oil well output is concentrated for gas-liquid separation, and the injected water is deoiled, desanded, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H4/02F25B30/06F24T10/13
CPCF24H4/02F25B30/06F24T10/13Y02E10/10
Inventor 秦延才张正强庄栋田承村王红孟勇赵永杰
Owner CHINA PETROLEUM & CHEM CORP