CN210829219U - Skid-mounted wellhead fracturing blowout gas recovery system - Google Patents
Skid-mounted wellhead fracturing blowout gas recovery system Download PDFInfo
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- CN210829219U CN210829219U CN201921806015.1U CN201921806015U CN210829219U CN 210829219 U CN210829219 U CN 210829219U CN 201921806015 U CN201921806015 U CN 201921806015U CN 210829219 U CN210829219 U CN 210829219U
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Abstract
The utility model discloses a skid-mounted well head fracturing blowout gas recovery system, which relates to the field of natural gas exploitation equipment, and comprises a throttle manifold, wherein the inlet of the throttle manifold is connected with a trial production natural gas well head, the outlet of the throttle manifold is connected with a desanding device, and the desanding device is connected with a high-pressure separation device through a heating and pressure reducing device; the high-pressure separation device is provided with a high-pressure gas outlet and a first sewage discharge port, the high-pressure gas outlet is connected with an external network pipe through a gas transmission pipeline, and the first sewage discharge port is connected with a medium-pressure separation device; and the medium-pressure separation device is provided with a waste gas outlet and a second sewage draining outlet, the waste gas outlet is connected with a vent pipeline, and the second sewage draining outlet is connected with a waste liquid pipeline. The utility model discloses can carry out purification treatment to the pilot production gas that the pilot production well produced, and the degree of difficulty is less, and the cost is lower.
Description
Technical Field
The utility model relates to a natural gas exploitation equipment field, concretely relates to skid-mounted formula well head fracturing blowout gas recovery system.
Background
At present, during the development trial production of oil and gas fields, natural gas produced by scattered trial wells is difficult to reasonably utilize, most natural gas is treated by a combustion emptying mode, because the number of well mouths for trial production is large, the daily trial production natural gas amount of each well is about 5-10 ten thousand square, the trial production period is about 10 days, calculation is performed by taking hundreds of wells as an example, the annual emptying natural gas is about 5000-10000 ten thousand square, and a large amount of natural gas is combusted and emptied, so that resource waste is not only caused, but also serious environmental pollution can be caused.
The main reasons for burning and emptying the natural gas mined by the pilot production well in the pilot production period are as follows: after fracturing of the gas well is finished, blowout operation is started about half an hour, blowout objects at the initial stage of blowout are mainly fracturing fluid or propping agent in the well, and simultaneously a large amount of sand is accompanied, if the sand is directly input into an external conveying pipeline and subsequent treatment equipment, serious sand erosion can be generated, equipment damage and casualties can be caused, however, as the distribution range of the pilot production well is wider, the difficulty of uniformly treating pilot production gas generated by all pilot production wells is higher, and the cost is higher,
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a skid-mounted formula well head fracturing blowout gas recovery system can carry out purification treatment to the pilot production gas that the pilot production well produced, and the degree of difficulty is less, and the cost is lower.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a skid-mounted wellhead fracturing open-flow gas recovery system comprises a throttle manifold, wherein an inlet of the throttle manifold is connected with a pilot natural gas wellhead, an outlet of the throttle manifold is connected with a desanding device, and the desanding device is connected with a high-pressure separation device through a heating and pressure reducing device;
the high-pressure separation device is provided with a high-pressure gas outlet and a first sewage discharge port, the high-pressure gas outlet is connected with an external network pipe through a gas transmission pipeline, and the first sewage discharge port is connected with a medium-pressure separation device;
and the medium-pressure separation device is provided with a waste gas outlet and a second sewage draining outlet, the waste gas outlet is connected with a vent pipeline, and the second sewage draining outlet is connected with a waste liquid pipeline.
Further, a gas flowmeter is arranged on the gas transmission pipeline.
Further, a liquid flowmeter is arranged on the waste liquid pipeline.
Furthermore, the desanding device is a spiral-flow vertical desander and comprises a volute air inlet and a desanding core which are connected with each other, a gas outlet is formed in the top of the desanding core, and a sand storage device is arranged at the bottom of the desanding core.
Furthermore, the recovery system also comprises a desanding by-pass pipe, an inlet of the desanding by-pass pipe is connected with an outlet of the throttle manifold, and an outlet of the desanding device is connected with an outlet pipeline of the desanding by-pass pipe through a three-way valve.
Furthermore, the outlet of the throttle manifold is also connected with a blowout manifold.
Furthermore, the high-pressure separation device and the medium-pressure separation device are both horizontal pipe expanding type separators, pressure gauge ports and pressure relief ports are formed in the outer walls of the high-pressure separation device and the medium-pressure separation device, and separation elements and sand erosion prevention buffer blocks are installed inside the high-pressure separation device and the medium-pressure separation device.
Furthermore, the recovery system also comprises a first movable chassis and a second movable chassis, the heating and pressure reducing device is arranged on the first movable chassis, and the sand removing device, the high-pressure separation device and the medium-pressure separation device are arranged on the second movable chassis.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model provides a skid-mounted formula well head fracturing blowout gas recovery system can separate the area sand natural gas that comes out from the trial production natural gas well head, obtains getting rid of the grit in the natural gas, obtains the natural gas that can get into the network management by normal utilization after handling, has effectively improved the utilization ratio of resource, avoids taking the environment pollution that the direct sky of sand natural gas caused, and is more environmental protection, simultaneously, the utility model discloses a treatment facility is simpler, and the degree of difficulty is less, and the cost is lower.
(2) The utility model provides a skid-mounted formula well head fracturing puts jet-propelled recovery system, heating pressure relief device set up on first portable chassis, sand removal device, high-pressure separator and medium-pressure separator set up on the portable chassis of second, are convenient for remove, and later stage hoist and mount transportation simple and convenient.
Drawings
Fig. 1 is the embodiment of the utility model provides an embodiment skid-mounted well head fracturing puts jet-propelled recovery system's schematic structure.
In the figure: 1-throttling manifold, 2-trial production natural gas well mouth, 3-desanding device, 4-heating pressure reducing device, 5-high pressure separating device, 6-high pressure gas outlet, 7-first sewage outlet, 8-gas transmission pipeline, 9-gas flowmeter, 10-medium pressure separating device, 11-waste gas outlet, 12-second sewage outlet, 13-air release pipeline, 14-waste liquid pipeline, 15-liquid flowmeter, 16-desanding bypass pipe and 17-blowout manifold.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the embodiment of the utility model provides a skid-mounted formula well head fracturing blowout gas recovery system, including choke manifold 1, choke manifold 1's entry is connected with trial production natural gas well head 2, and the export is connected with sand removal device 3, sand removal bypass pipe 16, blowout manifold 17 through the three-way valve.
The sand removing device 3 is connected with the high-pressure separating device 5 through the heating and pressure reducing device 4, the high-pressure separating device 5 is provided with a high-pressure gas outlet 6 and a first sewage draining port 7, the high-pressure gas outlet 6 is connected with an external network management pipe through a gas transmission pipeline 8, the gas transmission pipeline 8 is provided with a gas flowmeter 9, and the first sewage draining port 7 is connected with a medium-pressure separating device 10.
The medium-pressure separation device 10 is provided with a waste gas outlet 11 and a second sewage draining outlet 12, the waste gas outlet 11 is connected with an emptying pipeline 13, the second sewage draining outlet 12 is connected with a waste liquid pipeline 14, and the waste liquid pipeline 14 is provided with a liquid flow meter 15.
The inlet of the desanding bypass pipe 16 is connected with the outlet of the throttle manifold 1, and the outlet of the desanding device 3 is connected with the outlet pipeline of the desanding bypass pipe 16 through a three-way valve.
The recovery system of the embodiment further comprises a first movable chassis and a second movable chassis, wherein the heating and pressure reducing device 4 is arranged on the first movable chassis, and the sand removing device 3, the high-pressure separation device 5 and the medium-pressure separation device 10 are arranged on the second movable chassis.
The embodiment of the utility model provides an in, sand removing device 3 is vertical desander of spiral-flow type, including interconnect's volute air inlet and desanding core, the top that removes the psammitolite is provided with gas outlet, and the bottom is provided with deposits the sand ware. When the sand removing device is used, the sand-carrying natural gas enters the gas inside the sand removing core through the volute body to form high-speed rotational flow, in the high-speed rotational flow process, the gas in the sand-carrying natural gas is separated from sand grains, the gas flows out along the outlet at the top, the separated sand grains, liquid and the like are settled in the sand storage device, and when the sand storage device is full of sand and needs to be cleaned, the gas enters the medium-pressure separation device 10 through the sand removing by-pass pipe 16.
The high-pressure separation device 5 and the medium-pressure separation device 10 are both horizontal expanded pipe type separators, the outer walls of the high-pressure separation device 5 and the medium-pressure separation device 10 are both provided with a pressure gauge port and a pressure relief port, and the inside of the high-pressure separation device 5 and the medium-pressure separation device is provided with a separation element and a sand erosion prevention buffer block. The pressure gauge arranged at the pressure gauge port monitors the pressure in the horizontal pipe expanding type separator in real time, and when the pressure in the horizontal pipe expanding type separator exceeds a certain value, the pressure is released through the pressure release port; the sand erosion prevention buffer block can buffer high-pressure natural gas, sand erosion harm of sand grains in the high-pressure natural gas to the separator can be reduced, and the service life of the separator is prolonged.
The utility model discloses when using, the area sand natural gas that comes out from trial production natural gas well head 2 gets into choke manifold 1, the area sand natural gas after the throttle manifold 1 throttle gets into desanding device 3, desanding operation is carried out in desanding device 3, separate sand grain in the natural gas with the natural gas, the natural gas after the desanding separation gets into heating and pressure reducing device 4, heating and pressure reducing device 4 heats and decompresses high-pressure natural gas into low-pressure natural gas, the natural gas after the decompression gets into high pressure separator 5, high pressure separator 5 carries out gas-liquid separation with the natural gas after the decompression, the natural gas after the separation directly inputs the defeated pipe network after measuring through gas meter 9, the liquid after the separation gets into medium pressure separator 10, carry out gas-liquid separation once more in medium pressure separator 10, the liquid after the separation directly gets into liquid storage device after measuring through liquid flowmeter 15, and then performing centralized treatment, wherein a small amount of separated natural gas is connected into a combustion pool for centralized combustion treatment.
The utility model discloses a recovery system can separate the area sand natural gas that comes out from trial production natural gas well head 2, obtains getting rid of the grit in the natural gas, obtains the natural gas that can get into the network management after the processing and by normal utilization, has effectively improved the utilization ratio of resource, avoids taking the environmental pollution that the direct sky of sand natural gas caused, and is more environmental protection, simultaneously, the utility model discloses a treatment facility is simpler, and the degree of difficulty is less, and the cost is lower.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (8)
1. The utility model provides a skid-mounted formula well head fracturing blowout gas recovery system, includes choke manifold (1), its characterized in that: the inlet of the throttle manifold (1) is connected with a trial natural gas production well head (2), the outlet of the throttle manifold is connected with a desanding device (3), and the desanding device (3) is connected with a high-pressure separation device (5) through a heating and pressure reducing device (4);
the high-pressure separation device (5) is provided with a high-pressure gas outlet (6) and a first sewage discharge port (7), the high-pressure gas outlet (6) is connected with an external network management pipe through a gas transmission pipeline (8), and the first sewage discharge port (7) is connected with a medium-pressure separation device (10);
the medium-pressure separation device (10) is provided with a waste gas outlet (11) and a second sewage draining outlet (12), the waste gas outlet (11) is connected with a vent pipeline (13), and the second sewage draining outlet (12) is connected with a waste liquid pipeline (14).
2. The skid-mounted wellhead fracturing blowout gas recovery system according to claim 1, wherein: and a gas flowmeter (9) is arranged on the gas transmission pipeline (8).
3. The skid-mounted wellhead fracturing blowout gas recovery system according to claim 1, wherein: and a liquid flowmeter (15) is arranged on the waste liquid pipeline (14).
4. The skid-mounted wellhead fracturing blowout gas recovery system according to claim 1, wherein: the desanding device (3) is a spiral-flow vertical desander and comprises a volute air inlet and a desanding core which are connected with each other, a gas outlet is formed in the top of the desanding core, and a sand storage device is arranged at the bottom of the desanding core.
5. The skid-mounted wellhead fracturing blowout gas recovery system according to claim 4, wherein: the recovery system further comprises a sand removing bypass pipe (16), an inlet of the sand removing bypass pipe (16) is connected with an outlet of the throttle manifold (1), and an outlet of the sand removing device (3) is connected with an outlet pipeline of the sand removing bypass pipe (16) through a three-way valve.
6. The skid-mounted wellhead fracturing blowout gas recovery system according to claim 5, wherein: the outlet of the throttle manifold (1) is also connected with a blowout manifold (17).
7. The skid-mounted wellhead fracturing blowout gas recovery system according to claim 1, wherein: high pressure separator (5), middling pressure separator (10) are horizontal expand tubular separator, all be provided with manometer mouth and pressure release mouth on the outer wall of high pressure separator (5), middling pressure separator (10), inside all installs separating element, sand control and loses the buffer block.
8. The skid-mounted wellhead fracturing blowout gas recovery system according to claim 1, wherein: the recovery system further comprises a first movable chassis and a second movable chassis, the heating and pressure reducing device (4) is arranged on the first movable chassis, and the sand removing device (3), the high-pressure separating device (5) and the medium-pressure separating device (10) are arranged on the second movable chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921806015.1U CN210829219U (en) | 2019-10-25 | 2019-10-25 | Skid-mounted wellhead fracturing blowout gas recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921806015.1U CN210829219U (en) | 2019-10-25 | 2019-10-25 | Skid-mounted wellhead fracturing blowout gas recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210829219U true CN210829219U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921806015.1U Active CN210829219U (en) | 2019-10-25 | 2019-10-25 | Skid-mounted wellhead fracturing blowout gas recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210829219U (en) |
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2019
- 2019-10-25 CN CN201921806015.1U patent/CN210829219U/en active Active
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