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Ground injecting gas boosting oil production and liquid discharging gas producing device and method

A technology of liquid drainage and gas production and gas booster pump, which is applied in the fields of production fluid, earthwork drilling, wellbore/well components, etc. It can solve problems such as artificial lift, and achieve the effect of strong applicability and convenient operation and management.

Inactive Publication Date: 2005-08-03
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is: to overcome the deficiencies of the prior art, to improve the recovery rate of oil and gas reservoirs, to reduce the bottom hole pressure of gas lift wells to a lower level, which is beneficial to solve the problem of low pressure and low productivity oil and gas wells, deep wells and super wells. For the artificial lift problem of deep wells, a surface gas injection pressurized oil recovery and liquid drainage gas recovery device and method are proposed

Method used

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  • Ground injecting gas boosting oil production and liquid discharging gas producing device and method
  • Ground injecting gas boosting oil production and liquid discharging gas producing device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1, the high-pressure gas source enters the oil casing annulus through the ground gas injection pipe 2 according to a certain gas injection pressure and gas injection volume, and reaches the power gas inlet 17 of the downhole gas booster pump 6 ( figure 2 ), inject high-pressure gas into one end of multiple air motors of the booster pump, and push the motor piston 7 ( figure 2 ) movement, the motor piston 7 ( figure 2 ) The other end of the exhaust gas from the channel 9 ( figure 2 ) through the exhaust gas discharge channel 4 ( figure 2 ) through the motor discharge valve 1 ( figure 2 )discharge. Motor piston 7( figure 2 ) movement drives the pump piston 11 ( figure 2 ) movement, the suction valve 13 at the suction end of the pump opens, and the well fluid ( figure 2 Bottom arrow) from the pump suction channel 14 ( figure 2 ) into the suction end of the pump barrel, while the discharge valve 12 ( figure 2 ) is opened, the pump piston 11 mov...

Embodiment 2

[0019] Embodiment 2, the course of work of gas booster pump is: see figure 2 , upstroke, the motor valve 5 is in the upper position, and the power gas that promotes the motor movement enters each power cylinder of the motor from the power gas inlet 17 through the passage 16, and pushes the motor piston 7 to move upwards (at one end of the exhaust cylinder), and the exhaust gas in the exhaust cylinder The exhaust gas is exhausted from channel 9 through motor exhaust valve 1 through exhaust channel 4; the motor valve is a reversing valve for power gas. When the motor piston 7 reaches the upper end of the cylinder, the motor piston 7 hits the valve needle of the motor valve exhaust valve 6, and the motor valve The exhaust valve 6 is opened, and the high-pressure power gas in the lower chamber of the motor valve 5 is discharged from the exhaust valve 6 of the motor valve into the exhaust gas discharge channel 4. The valve 5 moves downward and is in the lower position, the role of...

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Abstract

The present invention relates to oil and gas extracting apparatus and method suitable for deep well and super deep well, and aims at raising the hydrocarbon reservoir yield via lowering the pressure in bottom of gas lift well and solving the artificial lift problem of various kinds of well. The technological scheme of the present invention includes: injecting high pressure air via ground pipe and oil jacket to pneumatic motors in well gas booster pump to drive motor pistons and pump pistons; pumping out well liquid via the opened sucking valve, pump barrel and opened draining valve; and exhausting the mixture of exhaust air and pumped well liquid via oil pipe to well head output pipe. The present invention has the advantages of both gas lift and staff pump, can lower the bottom pressure to level lower than gas lift, and is especially suitable for the artificial lift of low pressure low potential oil / gas well, deep well and super deep well.

Description

technical field [0001] The invention relates to a device and method especially suitable for deep well and ultra-deep well for oil recovery and liquid drainage and gas recovery, which belong to the field of oil and natural gas exploitation. Background technique [0002] In the process of exploiting oil and natural gas, when the formation energy is sufficient, oil and gas wells can be produced by self-spraying; when the formation energy is reduced and the water content is not enough to maintain self-spraying production, it is necessary to supplement energy and switch to artificial lift production . Commonly used artificial lifting methods include: rod pump, gas lift, electric submersible pump, hydraulic piston pump, hydraulic jet pump, gas jet pump, hydraulic pneumatic pump, foam drainage, etc. At present, many oil and gas fields at home and abroad have entered the middle and late stages of development. With the continuous reduction of formation productivity, rising water cut...

Claims

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Application Information

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IPC IPC(8): E21B33/10E21B43/18
Inventor 刘建仪
Owner SOUTHWEST PETROLEUM UNIV
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