Automatic boosting oil production and liquid discharge gas producing device and method for underwell gas
A technology of liquid drainage and gas recovery and gas booster pump, which is applied in the direction of mining fluid, earthwork drilling and production, wellbore/well components, etc. It can solve problems such as artificial lift, achieve strong applicability, improve system efficiency, and have remarkable effects Effect
Inactive Publication Date: 2005-08-03
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0003] The purpose of the present invention is: for energy saving and efficiency enhancement and improving oil and gas reservoir recovery, make full use of the energy of the gas separated from the gas-liquid mixture flowing from the formation to the bottom of the well, and reduce the bottom well pressure of the gas lift well to a lower level To solve the artificial lift problem of high gas-liquid ratio oil and gas wells, low pressure and low productivity oil and gas wells, deep wells and ultra-deep wells, a device and method for automatic pressurized oil recovery and liquid drainage gas recovery of downhole gas are proposed
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[0009] The present invention will be further described below in conjunction with accompanying drawing.
[0010] In the downhole gas automatic pressurized oil production and liquid drainage gas production device, the casing 4 extends from the wellhead to the production layer 8 at the bottom of the well, the tubing 3 is located in the casing 4, and the tubing and casing are connected to the Christmas tree at the wellhead; the downhole tubing 3 has a seal The spacer 5 separates the oil casing annulus from the well bottom and the tubing, and there is a certain space under the packer 5; the gas booster pump 6 is located at the position of the packer 5 on the tubing 3, and the lower part of the packer 5 is in the oil casing annulus. The downhole gas can enter the power gas inlet of the gas booster pump 6 motor; the gas anchor 7 is installed in the lower part of the gas booster pump 6 and is connected with the suction port of the pump end. The production pipe 1 is located at the wellh...
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The present invention relates to oil and gas extracting apparatus and method suitable for deep well, super deep well and high gas / liquid ratio oil well, and aims at saving power consumption and raising the hydrocarbon reservoir yield via utilizing the energy of stratum gas to lower the pressure in bottom of gas lift well and solve the artificial lift problem of various kinds of well. The technological scheme of the present invention includes: separating the stratum fluid in the well bottom with gas anchor into gas and liquid; making the separated gas to drive the pneumatic motors of booster pump; exhausting the exhaust gas to well head; and pumping the gas anchor separated liquid through pump barrel and oil pipe to exhaust in the well head. The present invention operates on the stratum gas to increase yield and save energy obviously.
Description
technical field [0001] The invention relates to a device and method especially suitable for oil recovery and liquid drainage and gas recovery in deep wells, ultra-deep wells and high gas-liquid ratio oil and gas wells, belonging 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. Rod pump is currently the most widely used mechanical oil recovery method at home and abroad, but it is rarely used in wells with high gas-liquid...
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IPC IPC(8): E21B33/10E21B43/18
Inventor 刘建仪李颖川孙瑜贾春生
Owner SOUTHWEST PETROLEUM UNIV