Three-phase super-long high-power heating pipe for oil well

A heating tube, high-power technology, applied in the shape of heating elements, wellbore/well components, and production fluids, etc., can solve the problem of inability to meet the requirements of single-phase heating, sharp drop in oil layer temperature and condensation, excessive single-phase line load, etc. problems, achieve ideal mechanical strength and physical and chemical properties, prolong heating life, and reduce physical labor.

Inactive Publication Date: 2012-05-23
于光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Driven by high temperature and high pressure, the condensate begins to dilute and flow to the oil production well. The disadvantage is that the ignition probability is average, a large amount of energy is burned, and a large amount of exhaust gas and harmful gas after combustion are discharged, even acid liquid. At the same time, a large amount of high-pressure cold air is injected to cause the temperature of the burned oil layer to drop sharply and condense, which greatly affects the flow of oil and affects the oil recovery rate, which is not very ideal.
[0004] Single-phase special heating high-power devices require complex equipment, high cost, and high-power single-phase transformers and power distribution facilities. Due to large power, excessive load on single-phase lines, great damage to the national grid, and even damage, other various None of these heaters can be used in this environment, and most of the existing power supply facilities in domestic oil fields cannot meet the requirements for single-phase heating

Method used

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  • Three-phase super-long high-power heating pipe for oil well
  • Three-phase super-long high-power heating pipe for oil well

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Experimental program
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Effect test

Embodiment 1

[0029] The tubular sheath is formed from the alloy strip through tube rolling and high-frequency welding. At the same time, the ceramic magnesia material is filled with special equipment and the metal wire is fixed. During the process of tube making, the wire is uniformly squeezed into the sheath. In the middle of the sheath, several rolling and shrinking processes are carried out online at the same time to make the magnesium oxide dense between the conductor and the sheath. After making a qualified three-phase super long-power heating tube semi-finished product, the calculated power and length are three The phase heating wires are Y-welded, and all of them are sealed in the magnesium oxide in the heating tube by a special process, so that a safe, reliable, super-long and complete three-phase Y-connected high-power super-long heating tube is made. The oil well three-phase super high-power heating tube is 68 meters long, the working voltage is 380V, and the power is 75KW.

Embodiment 2

[0031] The calculated heating metal conductor is inserted into the magnesium oxide core and then penetrated into the large-diameter metal tube. After repeated drawing by the tube drawing machine, the calculated power and length are made into a semi-finished product, and the calculated power and length are used for three-phase heating. The wires are Y-welded, and all of them are sealed in the magnesium oxide in the heating tube by a special process, so that a safe, reliable, super-long and complete three-phase Y-connected high-power super-long heating tube is made. The oil well three-phase super high-power heating tube is 55 meters long, the working voltage is 380V, and the power is 55KW.

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Abstract

The invention relates to the field of heating pipes, in particular to a three-phase super-long high-power heating pipe for an oil well. The super-long heating pipe is formed by jointing a high-temperature resistant heating metal conductor, magnesium oxide and a metal sheath. The invention is widely applied to manufacturing of the super-long heating pipes, and can fill in the blank of use and manufacturing of the domestic heating pipes of special using environments and special purposes.

Description

technical field [0001] The invention relates to the field of heating tubes, in particular to a three-phase super high-power heating tube. Background technique [0002] At present, thermal oil recovery mainly uses some technological measures to increase the temperature of the oil layer. If the oil well is heated at about 300°C, it needs to be heated by a large-tonnage oil-fired boiler. Long, large heat loss, power consumption and oil consumption, environmental pollution, huge equipment, difficult handling, large maintenance, labor and time-consuming, extremely high cost, and poor economic benefits. It cannot be achieved by heating above 300°C and below 500°C. [0003] The imported U.S. Unis fire flooding mining technology applies chemical combustion accelerants to ignite the flammable gas and liquid in the oil layer under the above conditions, and then injects a large amount of high-pressure air to support the combustion, so that the oil layer is burned and heated, and the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24H05B3/42
Inventor 于光
Owner 于光
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