Viscosity reduction heating method for heavy oil recovery in well

A heating method and heavy oil technology, which is applied in the direction of mining fluid, earthwork drilling, wellbore/well parts, etc., can solve the problems of energy waste, high energy consumption, and rising mining costs, and achieve long service life, saving electricity, Labor saving effect

Inactive Publication Date: 2009-11-04
沧州润涛石油设备有限公司
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AI-Extracted Technical Summary

Problems solved by technology

At present, the viscosity reduction of heavy oil in wells mostly adopts electric heating, which has the disadvantage of high energy consumption. Electric ...
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Abstract

The invention discloses a viscosity reduction heating method for heavy oil recovery in a well, which uses a biological fuel automatic heater (1) to heat a heat carrier and adopts a dual-hollow sucker rod (2); the heat carrier enters the dual-hollow sucker rod (2) through a water inlet pipe (4) to circularly heat the heavy oil in the well; cold water cycled from the dual-hollow sucker rod (2) enters a liquid storage tank (6) through a return pipe (5); a high pressure circulating pump (3) pumps the water in the liquid storage tank (6) into a buffer tank (7) for buffering and gas-water separation; and the water flows into the biological fuel automatic heater (1) for being heated. The invention uses biological fuel to fully heat the heavy oil, thereby overcoming pollution and waste and solving the long-term problems of high power consumption, high cost and cost increase for heating the oil well.

Application Domain

Technology Topic

Heat carrierWater cycle +11

Image

  • Viscosity reduction heating method for heavy oil recovery in well

Examples

  • Experimental program(1)

Example Embodiment

[0010] Combine figure 1 Illustrative example is as follows: the present invention uses the biofuel automatic heater 1 to heat the heat carrier, and the double hollow sucker rod 2; the heat carrier enters the double hollow sucker rod 2 through the water inlet pipe 4 under the drive of the high-pressure circulating pump 3, and faces the well. Heavy oil circulating heating; the cold water circulating from the double hollow sucker rod 2 enters the liquid storage tank 6 through the return pipe 5, and the high-pressure circulating pump 3 pumps the water in the liquid storage tank 6 into the buffer tank 7 for buffering and gas-water separation, and The high-speed inflow biofuel automatic heater 1 is heated to form a heating system with a closed internal circulation of the heat carrier.
[0011] The heat carrier is driven by the high-pressure circulating pump 3 to overcome the frictional resistance of the pipe wall, flow to the inner hole channel 8 of the double hollow sucker rod 2 at high speed, and then return to the outside of the double hollow sucker rod 2 through the sedimentation in the bottom sedimentation chamber 9 The hole channel 10 enters the liquid storage tank 6 through the return pipe 5.
[0012] The invention uses biofuels to fully heat the heavy oil, which not only overcomes the disadvantages of pollution and loss, but also solves the problems of large electricity consumption, high cost, and increased cost for heating oil wells for a long time. This process can be used for single wells. Heating, in the range of 200 meters in diameter, a biological automatic heater can also be used to heat multiple wells, which is more energy-saving and efficient for heating multiple wells.
[0013] The double hollow sucker rod is designed with a closed, independent and interconnected hollow channel, and the heat carrier is used to circulate heating, realizing one rod for multiple purposes.
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Description & Claims & Application Information

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