CN209354105U - Downhole tool for plunger gas lift process - Google Patents
Downhole tool for plunger gas lift process Download PDFInfo
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- CN209354105U CN209354105U CN201821445150.3U CN201821445150U CN209354105U CN 209354105 U CN209354105 U CN 209354105U CN 201821445150 U CN201821445150 U CN 201821445150U CN 209354105 U CN209354105 U CN 209354105U
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000003466 welding Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an oil recovery gas technical field provides a plunger gas lift technology instrument in pit. The plunger gas lift process downhole tool comprises a limiting piece (1), a spiral spring (2) and a body (3), wherein the body (3) comprises a cavity which is axially communicated, the cavity comprises a first cavity (31) and a second cavity (32) which are axially connected, the spiral spring (2) is axially arranged in the first cavity (31) in an extending mode, and the inner diameter of the second cavity (32) is smaller than the outer diameter of the spiral spring (2); the limiting piece (1) is arranged at one end, far away from the second cavity (32), of the first cavity (31), and the spiral spring (2) is limited in the first cavity (31) by the limiting piece (1); the two ends of the body (3) are suitable for being connected with the oil pipe (5) respectively. The plunger gas lift process downhole tool can be connected with an oil pipe at any position and placed to a designed position in a well, and does not need rope operation even in a deep well and a highly-deviated well, so that the installation is convenient.
Description
Technical field
The utility model relates to christmas technical field, in particular to a kind of plunger lift technique downhole tool.
Background technique
In recent years, go deep into oil-gas field development, more and more small water yield gas wells of low pressure cannot fully rely on day
Right energy realizes continuous self-spray production.Plunger Airlift Draining Gas Recovery is low with its simple process, less investment, operation expense
The advantages that, it successfully solves the problems, such as that such gas well exploitation economic benefit is low, is widely applied in each major oil and gas field at present.
Plunger lift technique downhole tool is generally divided into buffer spring, fastener, plunger three parts at present, wherein buffering
Spring and fastener are generally an integral structure, and are played the role of buffer plunger downlink impact force and are limited plunger downstream position,
It is currently used to have bullet block formula, slip-type and three kinds of assembly of clamping hoop type fastener buffer spring.Before christmas, first by fastener
Buffer spring assembly transfers to setting position in oil pipe, and pumping for plunger is recycled to realize christmas.
In the process of implementing the utility model, the inventor finds that the existing technology has at least the following problems: often making at present
Three kinds of fastener buffer springs are required to wireline operation and are lowered into design position, then fastener is snapped fitted on oil pipe.?
Oil pipe inner seat in deep-well and high angle hole is left in larger difficulty and risk, and high, installation inconvenience, work are required wireline operation
Industry is at high cost.
Utility model content
The utility model embodiment provides a kind of plunger lift technique downhole tool, more easily by plunger lift well
Lower tool is installed to setting position.The technical solution of the utility model is as follows:
The utility model embodiment provides a kind of plunger lift technique downhole tool, including locating part, helical spring and
Ontology, wherein
The ontology include axially through cavity, the cavity includes axially connected the first cavity and the second cavity,
The helical spring is arranged in axially extendingly in first cavity, and the internal diameter of second cavity is less than the helical spring
Outer diameter；
The locating part is arranged in the one end of first cavity far from second cavity, and the locating part is by the spiral shell
Rotation spring is limited in first cavity；
The both ends of the ontology are suitable for being connected with oil pipe respectively.
Selectively, the locating part includes stop collar, and the stop collar is circular ring shape, and the internal diameter of the stop collar is greater than
The diameter of the plunger, and the internal diameter of the stop collar is less than the outer diameter of the helical spring.
Selectively, locating part further includes carrier, and the carrier is hollow cylinder, and the carrier setting exists
Between the stop collar and the helical spring.
Selectively, the inner cavity of carrier includes the first passage and second channel being axially connected to, and the first passage is in
Inverted truncated cone-shaped, the second channel is cylindrical, and the second channel is connected to first cavity.
Selectively, the maximum inner diameter of the first passage is greater than the internal diameter of the stop collar, and the first passage is most
Small internal diameter is less than the diameter of the plunger, and the inner wall of the first passage is suitable for accepting the plunger.
Selectively, one end of the helical spring and the lower end of the carrier pass through welded connecting.
Selectively, the helical spring is fixed by welding in first cavity far from one end of the locating part
Close to one end of second cavity.
Selectively, the stop collar and the ontology pass through clamp connection.
Selectively, one end in first cavity far from second cavity is provided with internal screw thread, and the ontology is logical
The internal screw thread is crossed to connect with oil pipe.
Selectively, the ontology is provided with external screw thread far from one end of first cavity, and is suitable for and tubing round thread
Connection.
The beneficial effect of technical solution provided by the embodiment of the utility model includes at least:
It is provided with the first cavity and the second cavity in the ontology of plunger lift technique downhole tool provided by the utility model,
Helical spring is axially disposed in the first cavity, the impact force that helical spring can be generated with buffer plunger whereabouts avoids plunger
Oil pipe is impacted because impact force is excessive, to generate damage to oil pipe and plunger.The internal diameter of second cavity is set smaller than spiral shell
The outer diameter of spring is revolved, so that helical spring limitation is prevented falling off for helical spring in the first cavity.Locating part setting is existed
Locating part, i.e., is arranged in the top of helical spring by the one end of the first cavity far from the second cavity, to limit on helical spring
It is movable in the first cavity to guarantee that helical spring continues for the displacement risen, also avoids occurring helical spring because rising displacement is excessive super
The elastic limit of helical spring out, and cause the elastic force of helical spring irrecoverable.The port at the ontology both ends of the tool can be straight
It connects and is connect with the port of oil pipe, accordingly even when being that can also directly connect the tool again with oil pipe in deep-well or high angle hole
Setting position in well is transferred to together.And the tool construction is simple, and strong operability does not need wireline operation during installation,
Operating cost is low.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, required for being described below to embodiment
The attached drawing used is briefly described.
Fig. 1 is the structural schematic diagram of plunger lift technique downhole tool provided by the embodiment of the utility model；
Fig. 2 is the structural representation that plunger lift technique downhole tool provided by the embodiment of the utility model is installed on oil pipe
Figure；
Fig. 3 is that the utility model provides the left view of carrier in the plunger lift technique downhole tool of embodiment；
Fig. 4 is that the utility model provides the top view of stop collar in the plunger lift technique downhole tool of embodiment.
Appended drawing reference in figure respectively indicates:
1-locating part；11-stop collars；111-snap-ring grooves；12-carriers；121-first passages；122-the second is logical
Road；
2-helical springs；
3-ontologies；31-the first cavity；32-the second cavity；
4-plungers；
5-oil pipes.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with attached drawing
Mode is described in further detail.
Tool includes locating part, helical spring and ontology under plunger lift process well provided by the embodiment of the utility model.
Ontology include axially through cavity, cavity includes that axially connected the first cavity and the second cavity, helical spring are axially extending
Ground is arranged in the first cavity, and the internal diameter of the second cavity is less than the outer diameter of helical spring；Locating part setting is separate in the first cavity
One end of second cavity, locating part limit helical spring in the first cavity；The both ends of ontology are suitable for being connected with oil pipe respectively.
It is provided with the first cavity and the second cavity in the ontology of plunger lift technique downhole tool provided by the utility model,
Helical spring is axially disposed in the first cavity, the impact force that helical spring can be generated with buffer plunger whereabouts avoids plunger
Oil pipe is impacted because impact force is excessive, to generate damage to oil pipe and plunger.The internal diameter of second cavity is set smaller than spiral shell
The outer diameter of spring is revolved, so that helical spring limitation is prevented falling off for helical spring in the first cavity.Locating part setting is existed
Locating part, i.e., is arranged in the top of helical spring by the one end of the first cavity far from the second cavity, to limit on helical spring
It is movable in the first cavity to guarantee that helical spring continues for the displacement risen, also avoids occurring helical spring because rising displacement is excessive super
The elastic limit of helical spring out, and cause the elastic force of helical spring irrecoverable.The port at the ontology both ends of the tool can be straight
It connects and is connect with the port of oil pipe, accordingly even when being that can also directly connect the tool again with oil pipe in deep-well or high angle hole
Setting position in well is transferred to together.And the tool construction is simple, and strong operability does not need wireline operation during installation,
Operating cost is low.
The utility model embodiment provides a kind of plunger lift technique downhole tool, and Fig. 1 is the plunger lift process well
The structural schematic diagram of lower tool, Fig. 2 are the schematic diagrames being installed to the plunger lift technique downhole tool on oil pipe, and Fig. 3 is this
The left view of carrier in plunger lift technique downhole tool, Fig. 4 are that the utility model provides the plunger lift technique of embodiment
The top view of stop collar in downhole tool.
As shown in Figure 1, tool includes locating part 1, helical spring 2 and ontology 3 under plunger lift process well.
In the present embodiment, ontology 3 preferably can be for equal cylindrical hollow steel pipe, material 35CrMo alloy pipe or
The geneva heat resisting steel of 9Cr1Mo model, the heat resistance of this few class steel is fine, quality is high, can when using in deep-well and high angle hole
To prolong the service life well.Certain the application is not limited to that, in other embodiments, can use other materials
To make ontology 3.
Include in ontology 3 axially through cavity, and cavity is divided into axially connected the first cavity 31 and the second cavity
32, helical spring 2 is to be arranged in the first cavity 31 axially extendingly.For example, as shown in Figure 1, the internal diameter of the first cavity 31 can
Slightly larger than the outer diameter of helical spring 2, ensure that in this way helical spring 2 in the first cavity 31 can it is up and down freely,
And the internal diameter of the second cavity 32 is less than the outer diameter of helical spring 2, so that helical spring 2 is limited in the first cavity 31, guarantees
Helical spring 2 will not fall off out of first cavity 31.
As shown in Figure 1, locating part 1 may be provided at one end in the first cavity 31 far from the second cavity 32.For example, in this reality
It applies in example, locating part 1 can be arranged in the top of one end far from the second cavity 32 of helical spring 2, thus by entire spiral
Spring 2 is limited in the first cavity 31, and when plunger 4 rises, helical spring 2 can also be popped up, which can limit
The displacement that helical spring 2 processed rises, it is excessive beyond elastic limit because rising displacement to avoid helical spring 2, and leads to spiral bullet
The elastic force of spring 2 is irrecoverable.In the present embodiment, locating part 1 can be fixed on by welding in ontology 3, this certain Shen
It please be not limited to that, in other embodiments, can also be fixed by screw or other reasonable manners.
In the present embodiment, referring to Fig. 1, locating part 1 may include stop collar 11.In the present embodiment, referring to fig. 4, it limits
Ring 12 is hollow ring-type.Such as the internal diameter of stop collar 11 can be set smaller than to the outer diameter of helical spring 2, it can limit in this way
It is movable in the first cavity 31 to determine helical spring 2.Certainly for the material and size of stop collar 11, the application is not limited in
This.In addition, as shown in Fig. 2, in the present embodiment, the internal diameter of stop collar 11 may be slightly larger than the diameter of plunger 4, it is ensured that plunger 4 exists
Stop collar 11 can be passed through during up and down reciprocatingly freely, plunger 4 is avoided to generate during up and down reciprocatingly with stop collar 11
Friction generates damage to plunger 4 and stop collar 11.
As shown in Figure 1, locating part 1 may also include carrier 12.In the present embodiment, carrier 12 can be placed on limit
Between ring 11 and helical spring 2, carrier 12 can also be hollow cylinder, for example, see shown in Fig. 3, the inner cavity of carrier 12
The first passage 121 and second channel 122 being axially connected to can be divided into.First passage 121 can be in inverted truncated cone-shaped, second channel
122 can be cylindrical, and is connected between second channel 122 and the first cavity 31, to guarantee the gas and liquid that generate in well
It flows smoothly.
For example, in the present embodiment, the maximum inner diameter of first passage 121 can be greater than the internal diameter of stop collar 11, calm to guarantee
Freely, certain the application is not limited to that plunger, and the minimum diameter of first passage 121 can be small for activity during up and down reciprocatingly
In the diameter of plunger 4, i.e. the minimum diameter of first passage 121 internal diameter that is less than stop collar 11, so as to which carrier 12 to be arranged
In the lower section of stop collar 11, the internal diameter of second channel 122 can be equal to the minimum diameter of first passage 121, ensure that in this way
Plunger 4 can be fallen on the inner wall of 12 truncated cone-shaped of carrier when falling, to have the function that carrier 12 accepts plunger 4.When
Right the present embodiment is not limited to that, in other embodiments, such as the internal diameter of second channel 122 can be set smaller than or
Greater than first passage minimum diameter can also play the role of accept plunger 4 prevent plunger 4 fall.In addition, for carrier
12 shape, the application are not limited to that, in other embodiments, the inner cavity of carrier 12 can also be also configured as cylinder
The internal diameter of second channel 122 is set smaller than the internal diameter of plunger 4 by shape, and such plunger 4 can fall on the port of second channel 122,
Can also play the role of undertaking plunger 4 prevents plunger 4 from falling, and the impact force that plunger 4 falls is evenly transferred on spring.
In the present embodiment, the mode that clip can be used between ontology 3 and stop collar 11 is fixedly connected, and stop collar 11 passes through
For snap-ring groove 111 by stop collar 11 clip to ontology 3, the internal diameter that one end of stop collar 11 is arranged in ontology 3 may be slightly larger than the first chamber
The internal diameter of body 31, so that it is accurate to prevent the meeting of stop collar 11 generation upper and lower displacement influence in the first cavity 31 from limiting to plunger 4
Property.When the tool and oil pipe 5 pass through the threaded connection of ontology, oil pipe 5 will be pushed up stop collar 11 to outer on the first cavity 31
Stop collar 11 is fixed between oil pipe 5 and ontology 3 by the bottom of screw thread, thus further that stop collar 11 is fixed.This certain Shen
It please be not limited to that, in other embodiments, can also be fixedly connected using welding or other reasonable manners, 3 He of ontology
The material of stop collar 11 may also preferably be identical material, in this way it is also possible that the connection between ontology 3 and stop collar 11 more
It is firm.The mode that welding can also be used between carrier 12 and helical spring 2, for example, see shown in Fig. 3, the centre of carrier 12
Can to be hollow, two sides can be it is solid, helical spring 2 can be thus fixed on to the solid place of 12 downside of carrier, to guarantee
It is structure as a whole between helical spring 2 and carrier 12.But between carrier 12 and stop collar 11 can be separated structure, in this way
After carrier 12 accepts the plunger 4 to fall, the impact force that plunger 4 falls can be evenly transferred to the whereabouts of plunger 4
On helical spring 2, so that helical spring 2 plays buffer function to the whereabouts of plunger 4, the other end of helical spring 2 can also pass through
The mode of welding and the first cavity 31 guarantee that helical spring 2 will not be because fixing not in activity close to one end of the second cavity 32
Activity that is firm and influencing plunger 4.Certainly for the connection side between helical spring 2 and carrier 12,31 port of the first cavity
The material of formula and carrier 12, the application be not limited to that, in other embodiments, can also using bolt or other
Helical spring 2 is fixedly connected between 31 port of the first cavity and carrier 12 and connects by reasonable manner, and other materials
Material is used as carrier 12.
As shown in Figure 1, in the present embodiment, the one end of first cavity 31 far from the second cavity 32 is settable interior in ontology 3
Screw thread, such ontology 3 can be connect by the internal screw thread of the first cavity 31 with oil pipe 5, and certain the application is not limited to that, at it
In his embodiment, it can also will be set as external screw thread at port of first cavity 31 far from the second cavity 32 or closed by other
The mode of reason is connect with oil pipe 5.
Shown in Figure 1, the second cavity 32 may be configured as external screw thread far from one end of the first cavity 31, to pass through outer spiral shell
Line is connect with oil pipe 5.Certain the application is not limited to that.In addition, to the shape of the ontology 3 provided in this present embodiment, this
Application is not limited to that, in other embodiments, can also be connect using other reasonable shapes with oil pipe 5.
The working principle of plunger lift technique downhole tool provided by the embodiment of the utility model are as follows:
Before transferring to the tool in well, first the both ends of the tool are connect with oil pipe 5 respectively.Then by the tool with
Oil pipe 5 transfers to design position in well together, after the tool and oil pipe 5 are installed in well, transfers plunger 4, plunger 4 exists
Dramatic decrease under the action of gravity is contacted across stop collar 11 with carrier 12, and carrier 12 will be under plunger 4 after accepting plunger 4
The impact force fallen is uniformly transferred to helical spring 2, and helical spring 2 is shunk, and plays buffer function, same time limit to the whereabouts of plunger 4
The displacement that plunger 4 processed falls not only had avoided plunger 4 that from hitting oil pipe 5 because of excessive velocities and has generated damage to oil pipe 5 and plunger 4, but also
Plunger 4 is limited in design position.
Well down periods, the liquid in well can enter oil pipe, flow to above plunger, drive a well after the energy accumulation of shaft bottom, shaft bottom
Gas reach certain air pressure and plunger 4 and liquid can be jacked up, so that plunger 4 plays the role of separating liquid with gas,
After plunger 4 rises, helical spring 2 can also loosen, and stop collar 11 can play defined position to helical spring 12 again at this time
Effect, it is excessive beyond elastic limit because rising displacement to avoid helical spring 12, and causes the elastic force of helical spring 12 can not be extensive
It is multiple, influence the production fate row in later period in the use and well of the tool.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (10)
1. a kind of plunger lift technique downhole tool, which is characterized in that including locating part (1), helical spring (2) and ontology (3),
Wherein,
The ontology (3) include axially through cavity, the cavity includes axially connected the first cavity (31) and the second chamber
Body (32), the helical spring (2) are arranged in axially extendingly in first cavity (31), second cavity (32) it is interior
Diameter is less than the outer diameter of the helical spring (2)；
Locating part (1) setting is in the one end of first cavity (31) far from second cavity (32), the locating part
(1) helical spring (2) is limited in first cavity (31)；
The both ends of the ontology (3) are suitable for being connected with oil pipe (5) respectively.
2. plunger lift technique downhole tool according to claim 1, which is characterized in that the locating part (1) includes limit
Position ring (11), the stop collar (11) they are circular ring shape, and the internal diameter of the stop collar (11) is greater than the diameter of the plunger (4), and
The internal diameter of the stop collar (11) is less than the outer diameter of the helical spring (2).
3. plunger lift technique downhole tool according to claim 2, which is characterized in that the locating part (1) further includes
Carrier (12), the carrier (12) are hollow cylinder, the carrier (12) setting in the stop collar (11) and
Between the helical spring (2).
4. plunger lift technique downhole tool according to claim 3, which is characterized in that the inner cavity of the carrier (12)
Including the first passage (121) and second channel (122) being axially connected to, the first passage (121) is in inverted truncated cone-shaped, institute
It is cylindrical to state second channel (122), and the second channel (122) is connected to first cavity (31).
5. plunger lift technique downhole tool according to claim 4, which is characterized in that the first passage (121)
Maximum inner diameter is greater than the internal diameter of the stop collar (11), and the minimum diameter of the first passage (121) is less than the plunger (4)
Diameter, the inner wall of the first passage (121) are suitable for accepting the plunger (4).
6. according to plunger lift technique downhole tool described in any item of claim 3-5, which is characterized in that the spiral
One end of spring (2) and the lower end of the carrier (12) pass through welded connecting.
7. plunger lift technique downhole tool according to claim 1, which is characterized in that the helical spring (2) is separate
One end of the locating part (1) is fixed by welding in first cavity (31) close to the one of second cavity (32)
End.
8. plunger lift technique downhole tool according to claim 2, which is characterized in that the stop collar (11) with it is described
Ontology (3) passes through clamp connection.
9. plunger lift technique downhole tool according to claim 1, which is characterized in that remote in first cavity (31)
One end from second cavity (32) is provided with internal screw thread, and the ontology (3) is connect by the internal screw thread with oil pipe (5).
10. plunger lift technique downhole tool according to claim 1, which is characterized in that the ontology (3) is far from described
One end of first cavity (31) is provided with external screw thread, and is suitable for being threadedly coupled with oil pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821445150.3U CN209354105U (en) | 2018-09-04 | 2018-09-04 | Downhole tool for plunger gas lift process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821445150.3U CN209354105U (en) | 2018-09-04 | 2018-09-04 | Downhole tool for plunger gas lift process |
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| Publication Number | Publication Date |
|---|---|
| CN209354105U true CN209354105U (en) | 2019-09-06 |
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ID=67778058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821445150.3U Active CN209354105U (en) | 2018-09-04 | 2018-09-04 | Downhole tool for plunger gas lift process |
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| Country | Link |
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| CN (1) | CN209354105U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196499A (en) * | 2020-09-29 | 2021-01-08 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Water lifting method of positioning tool descending along with oil pipe |
| CN115217752A (en) * | 2022-06-22 | 2022-10-21 | 中国石油大学(北京) | Plunger piston |
-
2018
- 2018-09-04 CN CN201821445150.3U patent/CN209354105U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196499A (en) * | 2020-09-29 | 2021-01-08 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Water lifting method of positioning tool descending along with oil pipe |
| CN115217752A (en) * | 2022-06-22 | 2022-10-21 | 中国石油大学(北京) | Plunger piston |
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