Oil gas well B annulus pressure automatic relief device

Abstract

The utility model discloses an oil gas well B annulus pressure automatic relief device. The starting end of the gas inlet pipeline is connected with an annular space of an oil-gas water well B; the starting end of the first pressure relief pipeline is connected with the tail end of the air inlet pipeline; a pressure regulating valve is arranged on the first pressure relief pipeline; the starting end of the exhaust pipeline is connected with the tail end of the first pressure relief pipeline; the starting end of the second pressure relief pipeline is connected with the tail end of the air inlet pipeline; a pressure safety valve is arranged on the second pressure relief pipeline; the tail end of the second pressure relief pipeline is connected with the starting end of the exhaust pipeline; the starting end of the third pressure relief pipeline is connected with the tail end of the air inlet pipeline; a manual valve is arranged on the third pressure relief pipeline; and the tail end of the third pressure relief pipeline is communicated with the starting end of the exhaust pipeline. The pressure relief valve has the advantages that the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline are arranged, redundant pressure can be relieved in time, and overpressure emergency relief is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas well technical field especially relates to a kind of oil and gas well B annular space pressure automatic relief device. BACKGROUND

[0002] Oil and gas well production system is a kind of pressure control widely used in offshore oil and chemical industry, its role is when oil and gas well B annular space pressure exceeds certain pressure value, extra pressure is discharged in time, prevent oil and gas well B annular space pressure overpressure, affect normal production of oil and gas well and avoid to cause safety production accident, effectively protect the safety of personnel and equipment facilities.

[0003] At present, oil and gas well B annular space pressure monitoring exists or uses mechanical spring mechanism pressure control valve control, there is low control precision, cannot realize remote display, control, cannot realize overpressure shutdown, overpressure emergency relief function. Personnel need to go to the scene regularly to read pressure value manually and carry out manual relief, prone to not in place, not in time due to personnel inspection, pressure monitoring and control cannot be guaranteed, affect the safe normal production of oil and gas well. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of oil and gas well B annular space pressure automatic relief device, it is equipped with first pressure relief pipeline, second pressure relief pipeline and third pressure relief pipeline, can discharge extra pressure in time, realize overpressure emergency relief.

[0005] The utility model aims at providing a kind of oil and gas well B annular space pressure automatic relief device, pressure transmitter and shut-off valve are respectively equipped on the inlet pipe and first pressure relief pipeline, the pressure transmitter and shut-off valve are connected with controller, when pressure transmitter detects that pressure reaches alarm value, controller carries out alarm display;When pressure transmitter detects that pressure reaches shut-off value, controller sends shut-off instruction to the shut-off valve, realizes overpressure shutdown.

[0006] To realize the above-mentioned purpose, the utility model uses the following technical scheme, including:

[0007] Inlet pipe, its starting end is connected with the connection of oil and gas well B annular space;

[0008] First pressure relief pipeline, its starting end is connected with the end of the inlet pipe;Pressure regulating valve is equipped on the first pressure relief pipeline;

[0009] Exhaust pipe, its starting end is connected with the end of first pressure relief pipeline;And

[0010] Second pressure relief pipeline, its starting end is connected with the end of the inlet pipe;Pressure safety valve is equipped on the second pressure relief pipeline;The end of the second pressure relief pipeline is connected with the starting end of the exhaust pipe;

[0011] A third pressure relief pipe, the starting end of which is connected with the end of the air inlet pipe; a manual valve is arranged on the third pressure relief pipe; the end of the third pressure relief pipe is communicated with the starting end of the air outlet pipe.

[0012] Preferably, the first pressure relief pipe, the second pressure relief pipe and the third pressure relief pipe all have a size of 1 / 2in and a pressure rating of 5000PSI.

[0013] Preferably, the system further comprises:

[0014] A pressure transmitter arranged on the air inlet pipe for detecting the pressure in the air inlet pipe;

[0015] A shut-off valve arranged on the first pressure relief pipe;

[0016] A controller electrically connected with the pressure transmitter and the shut-off valve, for alarming when the pressure transmitter detects that the pressure reaches an alarm value; sending a shut-off instruction to the shut-off valve when the pressure transmitter detects that the pressure reaches a shut-off value; determining the pressure detected by the pressure transmitter after sending the shut-off instruction, and sending an electric signal to the shut-off valve to make the solenoid valve of the shut-off valve electrified when the pressure detected by the pressure transmitter returns to a normal value.

[0017] Preferably, the system further comprises:

[0018] A base arranged directly below the first pressure relief pipe, the second pressure relief pipe and the third pressure relief pipe for supporting the first pressure relief pipe, the second pressure relief pipe and the third pressure relief pipe

[0019] Wherein, the base is provided with a fixing bolt hole, and the pressure regulating valve and the shut-off valve are fixed on the base by bolts.

[0020] Preferably, the first pressure relief pipeline comprises, in sequence from the starting end, a first pipe body, a pressure regulating valve, a second pipe body, a shut-off valve, a third pipe body, a second port of a first T-shaped tee, a third port of the first T-shaped tee, and a fourth pipe body; the second pressure relief pipeline comprises, in sequence from the starting end, a fifth pipe body, a second port of a second T-shaped tee, a third port of the second T-shaped tee, a sixth pipe body, a pressure safety valve, a seventh pipe body, a first port of a third T-shaped tee, a third port of the third T-shaped tee, an eighth pipe body, and a first port of a first T-shaped tee, and a blind pipe is arranged at a second port of the third T-shaped tee; the third pressure relief pipeline comprises, in sequence from the starting end, a first port of a second T-shaped tee, a ninth pipe body, a hand valve, and a tenth pipe body; a first port of a fourth T-shaped tee is connected with an end of the gas inlet pipeline; a second port of the fourth T-shaped tee is connected with a starting end of the first pipe body; a third port of the fourth T-shaped tee is connected with a starting end of the fifth pipe body; a first port of a fifth T-shaped tee is connected with a front end of the gas outlet pipeline; a second port of the fifth T-shaped tee is connected with an end of the tenth pipe body; and a third port of the fifth T-shaped tee is connected with a starting end of the fourth pipe body.

[0021] Preferably, a one-way valve is arranged on the third pipe body.

[0022] Preferably, mounting holes are arranged at four corners of the base.

[0023] The beneficial effects of the utility model are as follows: the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline are arranged, so that the excessive pressure can be discharged in time, and the emergency discharge of overpressure is realized; the pressure transmitter and the shut-off valve are arranged on the gas inlet pipeline and the first pressure relief pipeline respectively, the pressure transmitter and the shut-off valve are connected with the controller, the controller performs alarm display when the pressure transmitter detects that the pressure reaches an alarm value; the controller sends a shut-off instruction to the shut-off valve when the pressure transmitter detects that the pressure reaches a shut-off value, so that the overpressure shutdown is realized. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a perspective view of the oil and gas water well B annular space pressure automatic discharge device.

[0025] Fig. 2 It is a plan view of the oil and gas water well B annular space pressure automatic discharge device. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail in combination with the drawings, so that the person skilled in the art can implement according to the description.

[0027] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0028] like Figs. 1-2 As shown, the present invention provides an automatic pressure relief device 1 for annulus pressure in oil, gas and water wells (B type), comprising:

[0029] An intake pipe 100 is connected at its starting end to the annulus of oil, gas and water well B; a first pressure relief pipe 200 is connected at its starting end to the end of the intake pipe 100; a pressure regulating valve 212 is provided on the first pressure relief pipe 200; an exhaust pipe 500 is connected at its starting end to the end of the first pressure relief pipe 200; a second pressure relief pipe 300 is connected at its starting end to the end of the intake pipe 100; a pressure safety valve 313 is provided on the second pressure relief pipe 300; the end of the second pressure relief pipe 300 is connected to the starting end of the exhaust pipe; a third pressure relief pipe 400 is connected at its starting end to the end of the intake pipe 100; a manual valve 412 is provided on the third pressure relief pipe 400; the end of the third pressure relief pipe 400 is connected to the starting end of the exhaust pipe 500.

[0030] During use, when the pressure in the intake pipe 100 exceeds the set value of the pressure regulating valve 212, the pressure regulating valve 212 opens and pressure is released through the first pressure relief pipe 200; when the pressure in the intake pipe 100 exceeds the set value of the pressure safety valve 313, the pressure safety valve 313 opens and pressure is released through the second pressure relief pipe 300. When the pressure safety valve 313 malfunctions or needs maintenance, the manual valve 412 can be manually opened to release pressure through the third pressure relief pipe 400.

[0031] In another embodiment, the first pressure relief line 200, the second pressure relief line 300 and the third pressure relief line 400 all have a nominal diameter of 1 / 2 inch and a pressure rating of 5000 PSI.

[0032] In another embodiment, the system further includes: a pressure transmitter 110 disposed on the intake pipe 100 for detecting the pressure within the intake pipe 100; a shut-off valve 214 disposed on the first pressure relief pipe 200; and a controller 600 electrically connected to the pressure transmitter 110 and the shut-off valve 214, for displaying an alarm when the pressure transmitter 110 detects that the pressure has reached an alarm value; when the pressure transmitter 110 detects that the pressure has reached a shut-off value, the controller sends a shut-off command to the shut-off valve 214; after sending the shut-off command, the controller determines the pressure detected by the pressure transmitter 110, and when the pressure transmitter 110 detects that the pressure has returned to a normal value, it sends an electrical signal to the shut-off valve 214 to energize the solenoid valve of the shut-off valve.

[0033] In another embodiment, a base 700 is further included, which is arranged directly below the first, second and third pressure relief pipelines 200, 300 and 400 to support the first, second and third pressure relief pipelines 200, 300 and 400; wherein the base 700 is provided with fixing bolt holes, and the pressure regulating valve 212 and the shut-off valve 214 are bolted to the base 700.

[0034] In another embodiment, the first pressure relief pipeline 200 comprises, from the starting end, a first pipe body 211, a pressure regulating valve 212, a second pipe body 213, a shut-off valve 214, a third pipe body 215, a second interface 812 of a first T-shaped three-way pipe 810, a third interface 813 of the first T-shaped three-way pipe 810 and a fourth pipe body 216 connected in sequence.

[0035] The second pressure relief pipeline 300 comprises, from the starting end, a fifth pipe body 311, a second interface 822 of a second T-shaped three-way pipe 820, a third interface 823 of the second T-shaped three-way pipe 820, a sixth pipe body 312, a pressure safety valve 313, a seventh pipe body 314, a first interface 831 of a third T-shaped three-way pipe 830, a third interface 833 of the third T-shaped three-way pipe 830, an eighth pipe body 315 and a first interface 811 of the first T-shaped three-way pipe 810 connected in sequence, and a blind pipe 316 is arranged at a second interface 832 of the third T-shaped three-way pipe 830; the third pressure relief pipeline 400 comprises, from the starting end, a first interface 821 of the second T-shaped three-way pipe 820, a ninth pipe body 411, a manual valve 412 and a tenth pipe body 413 connected in sequence; a first interface 841 of a fourth T-shaped three-way pipe 840 is connected to the end of the air inlet pipeline 100; a second interface 842 of the fourth T-shaped three-way pipe 840 is connected to the starting end of the first pipe body 211; a third interface 843 of the fourth T-shaped three-way pipe 840 is connected to the starting end of the fifth pipe body 311; a first interface 851 of a fifth T-shaped three-way pipe 850 is connected to the front end of the air outlet pipeline 500; a second interface 852 of the fifth T-shaped three-way pipe 850 is connected to the end of the tenth pipe body 413; and a third interface 853 of the fifth T-shaped three-way pipe 850 is connected to the starting end of the fourth pipe body 216.

[0036] In another embodiment, a one-way valve 217 is arranged on the third pipe body 215.

[0037] In another embodiment, mounting holes 710 are arranged at four corners of the base 700, respectively.

[0038] The utility model discloses a kind of oil-gas-water well B annular space pressure automatic relief devices 1, with first pressure relief pipeline 200, second pressure relief pipeline 300 and third pressure relief pipeline 400, can discharge excess pressure in time, realize emergency relief of overpressure.In gas inlet pipeline and first pressure relief pipeline are respectively equipped with pressure transmitter and shut-off valve, the pressure transmitter 110 and shut-off valve 214 are connected with controller 600, when pressure transmitter 110 detects that pressure reaches alarm value, controller 600 carries out alarm display;When pressure transmitter 110 detects that pressure reaches shut-off value, controller 600 sends shut-off instruction to the shut-off valve 214, realizes overpressure shut-down.

[0039] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and can be applied to various fields suitable for the present application. Those skilled in the art can easily make further modifications, and the present application is not limited to specific details and the figures shown and described herein without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. An automatic annulus pressure relief device for oil and gas wells, characterized in that, It comprises: an air inlet pipeline, the starting end of which is connected with the annulus of the oil-gas-water well B; a first pressure relief pipeline, the starting end of which is connected with the end of the air inlet pipeline; a pressure regulating valve is arranged on the first pressure relief pipeline; an exhaust pipeline, the starting end of which is connected with the end of the first pressure relief pipeline; and a second pressure relief pipeline, the starting end of which is connected with the end of the air inlet pipeline; a pressure safety valve is arranged on the second pressure relief pipeline; the end of the second pressure relief pipeline is connected with the starting end of the exhaust pipeline; a third pressure relief pipeline, the starting end of which is connected with the end of the air inlet pipeline; a hand valve is arranged on the third pressure relief pipeline; the end of the third pressure relief pipeline is communicated with the starting end of the exhaust pipeline.

2. The automatic annulus pressure relief device for oil and gas wells B according to claim 1, characterized in that: The diameter of the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline is 1 / 2in, and the pressure rating is 5000PSI.

3. The automatic annulus pressure relief device for oil and gas wells B according to claim 1 or 2, characterized in that, It further comprises: a pressure transmitter arranged on the air inlet pipeline for detecting the pressure in the air inlet pipeline; a shut-off valve arranged on the first pressure relief pipeline; a controller electrically connected with the pressure transmitter and the shut-off valve respectively, for alarming when the pressure transmitter detects that the pressure reaches an alarm value, and sending a shut-off instruction to the shut-off valve when the pressure transmitter detects that the pressure reaches a shut-off value; after sending the shut-off instruction, the pressure detected by the pressure transmitter is judged, and when the pressure detected by the pressure transmitter returns to a normal value, an electric signal is sent to the shut-off valve to make the electromagnetic valve of the shut-off valve electrified.

4. The automatic annulus pressure relief device for oil and gas wells B according to claim 3, characterized in that, It further comprises: a base arranged directly below the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline for supporting the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline; a fixing bolt hole is arranged on the base, and the pressure regulating valve and the shut-off valve are fixed on the base by bolts.

5. The automatic annulus pressure relief device for oil and gas wells B according to claim 4, characterized in that: The first pressure relief pipeline comprises, from the starting end to the end, a first pipe body, a pressure regulating valve, a second pipe body, a shut-off valve, a third pipe body, a second interface of a first T-shaped tee joint, a third interface of the first T-shaped tee joint and a fourth pipe body connected in sequence; the second pressure relief pipeline comprises, from the starting end to the end, a fifth pipe body, a second interface of a second T-shaped tee joint, a third interface of the second T-shaped tee joint, a sixth pipe body, a pressure safety valve, a seventh pipe body, a first interface of a third T-shaped tee joint, a third interface of the third T-shaped tee joint, an eighth pipe body and a first interface of a first T-shaped tee joint connected in sequence; a blind pipe is arranged at a second interface of the third T-shaped tee joint; the third pressure relief pipeline comprises, from the starting end to the end, a first interface of the second T-shaped tee joint, a ninth pipe body, a hand valve and a tenth pipe body connected in sequence; a first interface of a fourth T-shaped tee joint is connected with the end of the air inlet pipeline; a second interface of the fourth T-shaped tee joint is connected with the starting end of the first pipe body; a third interface of the fourth T-shaped tee joint is connected with the starting end of the fifth pipe body; a first interface of a fifth T-shaped tee joint is connected with the front end of the exhaust pipeline; a second interface of the fifth T-shaped tee joint is connected with the end of the tenth pipe body; and a third interface of the fifth T-shaped tee joint is connected with the starting end of the fourth pipe body.

6. The automatic annulus pressure relief device for oil and gas wells B according to claim 5, characterized in that: A one-way valve is arranged on the third pipe body.

7. The automatic annulus pressure relief device for oil and gas wells B according to claim 4, characterized by the fact that: Respective mounting holes are arranged at four corners of the base.

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