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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 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 heating of a well costs more than 300,000 yuan in electricity per year. The waste of energy is too large, which also leads to an increase in mining costs.

Method used

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  • Viscosity reduction heating method for heavy oil recovery in well

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Embodiment Construction

[0010] combine figure 1 Illustrative examples are as follows: the present invention adopts biofuel automatic heater 1 to heat the heat carrier, and adopts double hollow sucker rods 2; Heavy oil circulation heating; the cold water circulated from the double hollow sucker rod 2 enters the liquid storage tank 6 through the return pipe 5, and the high-pressure circulation pump 3 pumps the water in the liquid storage tank 6 into the buffer tank 7 for buffering and gas-water separation, and The biofuel automatically flows into the heater 1 at a high speed for heating, forming a heating system with a closed inner circulation of the heat carrier.

[0011] Driven by the high pressure of the high-pressure circulating pump 3, the heat carrier overcomes the pipe wall friction and flows to the inner hole channel 8 of the double hollow sucker rod 2 at high speed, and then returns to the outside of the double hollow sucker rod 2 after being deposited in the bottom sedimentation chamber 9 Th...

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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.

Description

Technical field [0001] The invention belongs to a method for reducing the viscosity of heavy oil in petroleum exploitation, in particular to a heating method for reducing the viscosity of heavy oil in a well. Background technique [0002] At present, in my country's crude oil exploitation, the proportion of highly viscous condensed oil is increasing. The exploitation of highly viscous oil requires the aid of a heating device to reduce the viscosity of the viscous oil in the well before it can be recovered smoothly. At present, the viscosity reduction of heavy oil in wells mostly adopts electric heating, which has the disadvantage of high energy consumption. Electric heating of a well costs more than 300,000 yuan in electricity per year. The waste of energy is too large, which also leads to an increase in mining costs. . Contents of the invention [0003] The purpose of the patent of the present invention is to overcome the above-mentioned deficiencies of the prior art, a...

Claims

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Application Information

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IPC IPC(8): E21B43/24E21B36/00
Inventor 张广卿李安夏樊前进王顺华商庆军付作忠赵福祥范振明赵进
Owner 沧州润涛石油设备有限公司
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