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Thickened oil thermal recovery decompression method and device

A decompression device and heavy oil technology, applied in the direction of production fluid, earthwork drilling, wellbore/well parts, etc., can solve the problems of joint or alternate use, and achieve the effect of convenient operation

Active Publication Date: 2013-11-27
JIANGSU WANXING PETROLEUM EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not yet possible to combine or alternate use of medium-high pressure steam and medium-low pressure steam (or even hot water) that is convenient for users

Method used

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  • Thickened oil thermal recovery decompression method and device
  • Thickened oil thermal recovery decompression method and device
  • Thickened oil thermal recovery decompression method and device

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Embodiment Construction

[0057] as the picture shows, figure 1The structural diagram of the thermal recovery decompression device includes a thermal recovery steam valve 31, a filter 32, a pressure reducing valve 33 in the high pressure area, a noise reduction throttle 34, a drainage antifreeze valve 35, a pressure gauge 36, and a secondary pressure reducing valve in the medium pressure area 37. Safety valve 38, vortex flow meter 39, stop valve 40. The thermal recovery and decompression device is an integrated structure, which is composed of thermal recovery and decompression integrated system, main steam pipe body, safety protection system, thermal control system, buffer explosion-proof system, instrumentation, throttling and noise reduction system, thermal insulation materials, etc. All are integrated in one instrument box, which reduces the trouble and labor intensity of installation and commissioning for users; it not only protects various systems and components from wind and sand erosion, but als...

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Abstract

A thickened oil thermal recovery decompression method is suitable for thickened oil thermal recovery of mesohigh steam boilers and mesolow steam boilers, and a heat source for thermal recovery can supply steam through a decompression device. A decompression system of the thermal recovery decompression device is composed of a high-pressure area decompression valve and a medium-pressure area secondary decompression valve, and due to the two-stage decompression structure, the thickened oil thermal recovery decompression device is suitable for various work conditions of thickened oil thermal recovery. Mesohigh steam output pipes which are controlled by the valve and parallelly connected are arranged behind the high-pressure steam decompression valve, steam discharging pipelines for enabling steam of the mesohigh steam boilers to pass are arranged on the high-pressure steam decompression valve or the medium-pressure area secondary decompression valve, and the thickened oil thermal recovery decompression device can be steam driven or low-pressure steam driven or hot water driven. The thickened oil thermal recovery decompression device can monitor steam pressure in the steam pipelines at proper time, is convenient to operate, and can ensure safety of steam filling pipelines and steam utilization devices by arranging two check valves on steam inlet portions of the steam pipelines and placing a check valve on a steam discharging port portion.

Description

1. Technical field [0001] The invention relates to a method and equipment for oil recovery, in particular to a method and device for thermal recovery and decompression of heavy oil. 2. Background technology [0002] Heavy oil is also called heavy crude oil or high-viscosity crude oil (heavy oil in English). It is classified according to viscosity, and degassed crude oil with a viscosity higher than 100mps at the oil reservoir temperature is called heavy oil. It is estimated that the total amount of conventional oil resources in the world is 300 billion tons. In addition, there are unconventional oil resources such as heavy oil, oil sand and oil shale. Their reserves are equivalent to 800 to 900 billion tons of oil. These will Become an important source of petroleum in the 21st century. According to relevant reports, my country's heavy oil reserves rank seventh in the world, and nine large and medium oil-bearing basins and a large number of heavy oil reservoir blocks have be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24
Inventor 薛华邓洪斌魏高华王坤路波
Owner JIANGSU WANXING PETROLEUM EQUIP
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