CN209908455U - Liquid-discharging gas-production well head working valve for hollow sucker rod - Google Patents
Liquid-discharging gas-production well head working valve for hollow sucker rod Download PDFInfo
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- CN209908455U CN209908455U CN201920254940.1U CN201920254940U CN209908455U CN 209908455 U CN209908455 U CN 209908455U CN 201920254940 U CN201920254940 U CN 201920254940U CN 209908455 U CN209908455 U CN 209908455U
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- sucker rod
- elbow
- hollow sucker
- valve
- connector
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Abstract
The utility model belongs to the technical field of the natural gas exploitation, a flowing back gas production well head working valve for hollow sucker rod is provided, which comprises a valve body, valve body sub-unit connection hollow sucker rod polished rod, valve body middle part intercommunication has the elbow, be connected with two at least ball valves on the elbow, two ball valves concatenate, the elbow other end is the connector under the elbow, the connector is connected with high-pressure hose under the elbow. This flowing back gas production well head work valve for hollow sucker rod to the exploitation technique of producing water gas reservoir, hollow sucker rod is as having pole lifting system, gives consideration to speed tubular column and carries out natural gas drainage and gas production time and use. Install after hollow polished rod tee bend department, when using hollow sucker rod to replace the speed tubular column, the well head can switch coupling hose, makes things convenient for production management, and opens one and is equipped with one ball valve, and the convenience is maintained when the ball valve goes wrong and is changed.
Description
Technical Field
The utility model belongs to the technical field of the natural gas exploitation, concretely relates to flowing back gas production well head work valve for hollow sucker rod.
Background
In the process of exploitation of the natural gas well, as the exploitation degree is continuously deepened, side water and bottom water produce liquid accumulation to a certain degree. In order to drain the wellbore fluid, production of the gas well is resumed. The prior water drainage gas recovery process mainly comprises the following steps: and selecting the processes of tubular column selection, foam drainage gas production, gas lifting drainage gas production, machine pumping drainage gas production and the like.
The machine-pumped drainage gas production process is simple in equipment, mature in design method, small in investment, free from limitation of the production degree and capable of exhaustively producing gas. The method is particularly suitable for drainage and gas production of low-pressure intermittent wells and water-flooded gas wells in the middle and later stages of gas reservoirs.
In the process of pumping water, draining and gas production, a hollow sucker rod can be used for replacing a solid sucker rod, and the process of drainage and gas production can be carried out according to the conditions of gas reservoir and drainage and gas production. And the liquid drainage and gas production of the natural gas well are realized by alternately using the rod lifting system and the speed tubular column system. However, in the gas production process, the valve can be controlled only through the wellhead valve of the gas production tree, and the wellhead gas production high-pressure hose needs to be detached when related pump detection operation is carried out, so that construction is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flowing back gas production well head work valve that can use with hollow sucker rod cooperation.
Therefore, the utility model provides a technical scheme as follows:
the utility model provides a hollow sucker rod is with flowing back gas production well head working valve, includes the valve body, valve body sub-unit connection hollow sucker rod polished rod, valve body middle part intercommunication has the elbow, be connected with two at least ball valves on the elbow, two ball valves concatenate, the elbow other end is connector under the elbow, the connector is connected with high-pressure hose under the elbow.
The valve body includes upper portion connector and lower part connector, upper portion connector top is the blind hole, hollow sucker rod polished rod is connected to lower part connector bottom, upper portion connector and the sealed intercommunication of lower part connector form the passageway, are equipped with the through-hole with the elbow intercommunication on this passageway.
The bending angle of the elbow is 60-90 degrees.
The elbow is connected with two ball valves which are connected in series through a parallel cap with threads.
The upper connector and the lower connector are connected through a threaded nut cap, and O-shaped sealing rings are respectively arranged above and below the through hole.
The through hole is a waist-shaped hole.
The valve body is made of 35CrMo material.
The utility model has the advantages that:
the utility model provides a this kind of flowing back gas production well head work valve for hollow sucker rod to the exploitation technique of producing water gas reservoir, hollow sucker rod is as having pole lifting system, uses when taking into account the speed tubular column and carrying out natural gas drainage gas production.
This work valve is installed after hollow polished rod tee bend department, and when using hollow sucker rod replacement speed tubular column, the well head can switch coupling hose, makes things convenient for production management, and opens one and is equipped with one ball valve, and the convenience is maintained when the ball valve goes wrong and is changed.
The following will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an upper connector; 2. a threaded nut; 3. a valve body; 4. an O-shaped sealing ring; 5. bending the pipe; 6. a waist-shaped hole; 7. a, a ball valve; 8. b, a ball valve; 9. a lower connector of the elbow; 10. a lower connector.
Detailed Description
Example 1:
this embodiment provides a flowing back gas production well head working valve for hollow sucker rod, including valve body 3, 3 sub-unit connection hollow sucker rod polished rods of valve body, 3 middle part intercommunications of valve body have elbow 5, be connected with two at least ball valves on the elbow 5, two ball valves concatenate, the 5 other ends of elbow are connector 9 under the elbow, connector 9 is connected with high-pressure hose under the elbow.
The working process is as follows:
liquid enters the valve body 3 after passing through the polished rod of the hollow sucker rod and the lower part of the valve body 3, and is discharged through the ball valve in the elbow 5, at least two ball valves are arranged in the using process, one ball valve can be opened and one ball valve can be prepared, and the maintenance and the replacement can be conveniently carried out when the ball valves have problems.
Example 2:
on the basis of embodiment 1, this embodiment provides a flowing back gas production well head working valve for hollow sucker rod, valve body 3 includes upper portion connector 1 and lower connector 10, 1 top of upper portion connector is the blind hole, hollow sucker rod polished rod is connected to lower connector 10 bottom, the sealed intercommunication of upper portion connector 1 and lower connector 10 forms the passageway, is equipped with the through-hole that communicates with elbow 5 on this passageway.
When the device is used, the upper connector 1 is connected with a polished rod of the pumping unit, the lower connector 10 is connected with a polished rod of the hollow sucker rod, and the elbow 5 is communicated with the valve body 3. When the hollow sucker rod is used as a speed tubular column for water drainage and gas production, the wellhead working valve can be cut off or opened to be connected with the high-pressure hose, so that smooth gas production is ensured.
Example 3:
on the basis of embodiment 1, the embodiment provides a liquid and gas drainage wellhead working valve for a hollow sucker rod, as shown in fig. 1, an upper connector 1 is connected with a polished rod pull rod of a pumping unit and has a blind hole structure; the lower connector 10 is connected with the polish rod of the hollow sucker rod to form a connecting channel, and the middle part is a waist-shaped hole 6. The position of the waist-shaped hole 6' is welded with an elbow 5 and is structurally sealed by an upper O-shaped sealing ring 4 and a lower O-shaped sealing ring 4 which are fastened and connected by threads and caps. The lower part of the elbow 5 (the angle is between 60 degrees and 90 degrees) is connected with a special ball valve with the pressure bearing reaching 16Mpa, namely an A ball valve 7 and a B ball valve 8, the A ball valve 7 and the B ball valve 8 are connected in a threaded cap-in-cap mode, and the two ball valves are opened one by one in the using process.
In this embodiment, the upper connector 1 is a sucker rod screw thread with a diameter of 25mm, and the size of the threaded nut 2 connecting the upper connector 1 and the lower connector 10 is M58 multiplied by 2; the valve body 3 is phi 60; the O-shaped sealing ring 4 is 60 multiplied by phi 5.33mm, and the sealing effect of the channel can be guaranteed by applying two sealing rings; the ball valve A7 and the ball valve B8 are phi 60, and the rated working pressure is 16 Mpa; the lower elbow connector 9 has one end M52X 2 and the other end R1 As English sealed pipe thread.
This work valve is installed after hollow polished rod tee bend department, and when using hollow sucker rod replacement speed tubular column, the well head can switch coupling hose, makes things convenient for production management, and opens one and is equipped with one ball valve, and the convenience is maintained when the ball valve goes wrong and is changed.
The valve body 3 adopts 35CrMo which can bear impact and high load as a raw material, adopts quenching and tempering treatment to enable the valve body to reach the mechanical property state of a D-grade sucker rod, adopts a turning and finish machining method to machine the valve body into a through hole structure, and then adopts an extrusion screw tap to machine the valve body into a hollow sucker rod internal thread with phi of 36 mm. After the top is processed into a blind hole, the thread of the sucker rod with the diameter of 25mm is processed. The upper and lower sealing rings are respectively arranged on the upper surface and the lower surface. The ball valve is a two-stage ball valve with the pressure bearing capacity reaching 16Mpa, and is provided with an A, B switch. The other end is connected with a high-pressure hose M52 multiplied by 2 thread.
The invention integrates two valves, and can ensure that one valve is opened and the other valve is reserved in the gas production process, wherein the valve A is a normally open valve, and the valve B is a reserve valve, so that the reserve valve B can be started when the normally open valve A has problems in the gas production process, and the high-pressure hose can be detached and the valves can be replaced and maintained conveniently.
The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. Components and structures not described in detail in the embodiments are those well-known in the art and commonly used structures or commonly used means, which are not all specifically described herein.
Claims (7)
1. The utility model provides a hollow sucker rod is with flowing back gas production well head working valve, includes valve body (3), its characterized in that: the hollow sucker rod polished rod of valve body (3) sub-unit connection, valve body (3) middle part intercommunication has elbow (5), be connected with two at least ball valves on elbow (5), two ball valves concatenate, elbow (5) other end is connector (9) under the elbow, connector (9) are connected with high-pressure hose under the elbow.
2. The liquid and gas drainage wellhead working valve for the hollow sucker rod according to claim 1, which is characterized in that: the valve body (3) comprises an upper connector (1) and a lower connector (10), the top of the upper connector (1) is a blind hole, the bottom of the lower connector (10) is connected with a hollow sucker rod polish rod, the upper connector (1) and the lower connector (10) are communicated in a sealing mode to form a channel, and a through hole communicated with an elbow (5) is formed in the channel.
3. The liquid and gas drainage wellhead working valve for the hollow sucker rod according to claim 1, which is characterized in that: the bending angle of the elbow (5) is 60-90 degrees.
4. The liquid and gas drainage wellhead working valve for the hollow sucker rod according to claim 1, which is characterized in that: the elbow (5) is connected with two ball valves which are connected in series through a threaded parallel cap (2).
5. The liquid and gas drainage wellhead working valve for the hollow sucker rod as claimed in claim 2, which is characterized in that: the upper connector (1) and the lower connector (10) are connected through a threaded nut cap (2), and O-shaped sealing rings (4) are respectively arranged on the upper portion and the lower portion of the through hole.
6. The liquid and gas drainage wellhead working valve for the hollow sucker rod as claimed in claim 2, which is characterized in that: the through hole is a waist-shaped hole (6).
7. The liquid and gas drainage wellhead working valve for the hollow sucker rod according to any one of claims 1 to 6, which is characterized in that: the valve body (3) is made of 35CrMo material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920254940.1U CN209908455U (en) | 2019-02-28 | 2019-02-28 | Liquid-discharging gas-production well head working valve for hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920254940.1U CN209908455U (en) | 2019-02-28 | 2019-02-28 | Liquid-discharging gas-production well head working valve for hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209908455U true CN209908455U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920254940.1U Active CN209908455U (en) | 2019-02-28 | 2019-02-28 | Liquid-discharging gas-production well head working valve for hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209908455U (en) |
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2019
- 2019-02-28 CN CN201920254940.1U patent/CN209908455U/en active Active
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