Constant pressure gas releasing and recycling device of oil well casing with sampling and anti-blocking functions
A technology of oil well casing and recovery device, which is applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc., can solve problems such as blockage of constant pressure gas release valve, no sampling function, affecting use, etc., and achieve extended use. effect of life
Inactive Publication Date: 2012-12-12
天津市金地科技发展有限公司
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Problems solved by technology
The constant pressure release valve installed on the oil pipe does not have the sampling function. In addition, if the casing gas contains oil, it will easily cause the constant pressure release valve to be blocked after entering the constant pressure release valve, affecting its use.
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[0010] The present invention will be further described below in conjunction with accompanying drawing:
[0011] In the figure, 1-constant pressure release valve, 2-release hose, 3-release tee, 4-pressure gauge, 5-anti-blocking cover, 6-port A, 7-port B, 8-sampling tube , 9-groove, 10-sampling valve, 11-connector.
[0012] Such as figure 1 , figure 2 As shown, the constant pressure deflation valve 1 is connected to the port A6 of the deflation tee 3 through the deflation hose 2, and the port B7 of the deflation tee 3 is connected to the pressure gauge 4, and the deflation tee 3 is equipped with an anti-blocking Cover 5, a sampling device is installed in the constant pressure release valve 1, the sampling device includes a sampling tube 8, a groove 9, a sampling valve 10 and a joint 11, the sampling tube 8 communicates with the bottom of the groove 9, and the sampling valve 10 is located in the groove 9 Inside, the joint 11 communicates with the side of the groove 9 .
[00...
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The invention provides a constant pressure gas releasing and recycling device of an oil well casing with sampling and anti-blocking functions. The device comprises a constant pressure gas releasing valve and is characterized in that a sampling device is installed in the constant pressure gas releasing valve, the constant pressure gas releasing valve is connected with a port A of the gas releasing tee by the gas releasing hose, and a port B of the gas releasing tee is connected with a pressure gauge, and furthermore an anti-blocking cap is installed in the gas releasing tee. The device provided by the invention has the advantages as follows: a passage is formed by the constant pressure gas releasing valve, the gas releasing valve and the gas releasing tee. The casing gas enters into an oil pipe from the casing by the passage to realize the recovery of the casing gas. The sampling device is installed in the constant pressure gas releasing valve, so as to realize the purpose of sampling the oil from the oil pipe. The oil sample can be collected at any time by regulating the sampling valve. The anti-blocking cap is installed in the gas releasing tee to prevent the oil mixed into the casing gas from entering into the device, so as to prolong the service life of the device.
Description
[0001] technical field [0002] The invention relates to the field of oil production equipment, in particular to a casing gas recovery device. Background technique [0003] At present, whether it is rod pump oil production or electric submersible pump oil production in mechanical oil recovery methods, in order to prevent the influence of gas on the oil well pump, oil and gas are separated at the bottom of the well and extracted separately for oil recovery. The well fluid enters the oil production pump and is discharged from the upper part of the tubing, and the gas is discharged from the casing by its own pressure, and then the oil and gas are recombined in the wellhead Christmas tree and enter the single well output pipeline together. The constant pressure release valve installed on the oil pipe does not have the sampling function. In addition, if the casing gas contains oil, it will easily cause the constant pressure release valve to be blocked after entering the constant ...
Claims
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IPC IPC(8): E21B43/00E21B49/08
Inventor 赵延平
Owner 天津市金地科技发展有限公司