CN213016292U - Concentric double-tube dual-control type downhole safety valve for offshore gas well - Google Patents
Concentric double-tube dual-control type downhole safety valve for offshore gas well Download PDFInfo
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- CN213016292U CN213016292U CN202022138761.7U CN202022138761U CN213016292U CN 213016292 U CN213016292 U CN 213016292U CN 202022138761 U CN202022138761 U CN 202022138761U CN 213016292 U CN213016292 U CN 213016292U
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- 239000004576 sand Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of downhole tools for oil and gas exploitation, in particular to a concentric double-tube dual-control type downhole safety valve for an offshore gas well, which comprises a safety valve body, a flow passage conversion short section, an outer tube joint, an inner tube joint and a safety control device; a first production channel and a second production channel are arranged in the safety valve body; the flow channel conversion short section comprises a first flow channel conversion short section, a second flow channel conversion short section and a third flow channel conversion short section which are fixedly arranged on the safety valve body; the outer pipe joint comprises a first outer pipe joint and a second outer pipe joint; the inner pipe joint comprises a first inner pipe joint and a second inner pipe joint; the safety control device comprises an inner pipe safety control device, a first hydraulic control pipeline, an annular safety control device and a second hydraulic control pipeline, wherein the inner pipe safety control device is arranged in the first production channel to realize the opening or closing of the first production channel; the annular safety control device is arranged in the second production channel to realize the opening or closing of the second production channel.
Description
Technical Field
The utility model relates to an oil gas exploitation downhole tool technical field specifically is a marine gas well is with concentric double-barrelled dual control type downhole safety valve.
Background
The underground safety valve is an underground tool which is arranged in an oil gas well and can be closed emergently to prevent well blowout and ensure the safety of the oil gas well and production when production facilities have fire alarm, pipeline breakage and irresistible natural disasters (such as earthquake, ice condition, strong typhoon, explosion, platform fire and the like).
With the continuous maturity of the concentric double-pipe column technology, the application of the concentric double-pipe column is more and more extensive, so that it is necessary to design an underground safety valve which can meet the production requirements of multiple production channels of the concentric double-pipe column, so as to facilitate the safe operation of oil and gas operations.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
For solving the above problem, the utility model provides a marine gas well is with concentric double-barrelled dual control type downhole safety valve can satisfy the production demand of concentric double-barrelled tubular column's many production passageways.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a concentric double-pipe dual-control type downhole safety valve for an offshore gas well comprises a safety valve body, a flow channel conversion short section, an outer pipe joint, an inner pipe joint and a safety control device;
a first production channel and a second production channel are arranged in the safety valve body;
the flow channel conversion short section comprises a first flow channel conversion short section, a second flow channel conversion short section and a third flow channel conversion short section, the first flow channel conversion short section is fixedly arranged on the first end of the safety valve body, the third flow channel conversion short section is fixedly arranged on the second end of the safety valve body, and the second flow channel conversion short section is fixedly arranged on the safety valve body and is arranged between the first flow channel conversion short section and the third flow channel conversion short section;
the outer pipe joint comprises a first outer pipe joint and a second outer pipe joint, the first outer pipe joint is fixedly connected to the first flow channel conversion short section, and the second outer pipe joint is fixedly connected to the third flow channel conversion short section;
the inner pipe joint comprises a first inner pipe joint and a second inner pipe joint, the first inner pipe joint is fixedly connected to the first flow channel conversion short section, the second inner pipe joint is fixedly connected to the third flow channel conversion short section, the first inner pipe joint and the first outer pipe joint are coaxially arranged, and the second inner pipe joint and the second outer pipe joint are coaxially arranged;
the safety control device comprises an inner pipe safety control device, a first hydraulic control pipeline, an annular safety control device and a second hydraulic control pipeline, the inner pipe safety control device is arranged in the first production channel and connected with the first flow channel conversion short section, and the first hydraulic control pipeline is connected with the inner pipe safety control device to realize the opening or closing of the first production channel; the annular safety control device is arranged in the second production channel and is connected with the second flow channel conversion nipple, and the second hydraulic control pipeline is connected with the annular safety control device to open or close the second production channel.
Preferably, the first flow passage conversion nipple is provided with a first connecting joint communicated with the inner pipe safety control device, the first hydraulic control pipeline is detachably connected to the first connecting joint, the second flow passage conversion nipple is provided with a second connecting joint communicated with the annular safety control device, and the second hydraulic control pipeline is detachably connected to the second connecting joint.
Preferably, the concentric double-pipe dual-control type downhole safety valve for the offshore gas well further comprises an oil pipe insertion sealing device, and a first end of the oil pipe insertion sealing device is fixedly connected to one end, away from the first flow passage conversion short section, of the first inner pipe joint.
Preferably, the concentric double-pipe dual-control type downhole safety valve for the offshore gas well further comprises a guide umbrella, the guide umbrella is fixedly connected to the second end of the oil pipe insertion sealing device, and the guide umbrella is designed to be of a spine structure.
Preferably, the first inner pipe joint, the oil pipe insertion sealing device and the guiding umbrella are all arranged in the first outer pipe joint.
(III) advantageous effects
The utility model provides a marine gas well is with concentric double-barrelled dual control type subsurface safety valve possesses following beneficial effect: during the use, first inner tube connects and first outer union coupling corresponds respectively on the inner tube and the outer tube of a concentric double-barrelled tubular column, second inner tube connects and second outer union coupling corresponds respectively and connects on the inner tube and the outer tube of another concentric double-barrelled tubular column, then can make the inner tube of concentric double-barrelled tubular column and the first production passageway on the relief valve body form complete inner tube production passageway, the inner tube of concentric double-barrelled tubular column, the second production passageway on outer tube and the relief valve body forms complete annular space production passageway, and when inner tube production passageway and annular space production passageway opened simultaneously, then can form the production passageway that leads to entirely, in order to satisfy the large-output production demand, and then satisfy the production demand of the multichannel of concentric double-barrelled tubular column. In the production process of the offshore gas well, a user can select a production channel actually required by the gas well according to the actual production requirement, the production allocation condition and the production sand and water production conditions of the gas well.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:
fig. 1 shows a schematic overall structure diagram of an embodiment of the present invention;
fig. 2 shows a production logging tool throughput schematic of an embodiment of the present invention.
In the figure: 2, a safety valve body, 3 flow channel switching short sections, 31 first flow channel switching short sections, 32 second flow channel switching short sections, 33 third flow channel switching short sections, 4 outer pipe joints, 41 first outer pipe joints, 42 second outer pipe joints, 5 inner pipe joints, 51 first inner pipe joints, 52 second inner pipe joints, 6 safety control devices, 61 inner pipe safety control devices, 62 first hydraulic control pipelines, 63 annular safety control devices, 64 second hydraulic control pipelines, 7 oil pipe insertion sealing devices and 8 guide umbrellas.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to the attached drawings 1 and 2, the embodiment of the utility model provides a concentric double-barrelled dual control type subsurface safety valve for offshore gas well, including safety valve body 2, runner conversion nipple 3, outer pipe joint 4, inner pipe joint 5 and safety control device 6;
a first production channel and a second production channel are arranged in the safety valve body 2;
the flow channel conversion short section 3 comprises a first flow channel conversion short section 31, a second flow channel conversion short section 32 and a third flow channel conversion short section 33, the first flow channel conversion short section 31 is fixedly arranged at the first end of the safety valve body 2, the third flow channel conversion short section 33 is fixedly arranged at the second end of the safety valve body 2, and the second flow channel conversion short section 32 is fixedly arranged on the safety valve body 2 and is arranged between the first flow channel conversion short section 31 and the third flow channel conversion short section 33;
the outer pipe joint 4 comprises a first outer pipe joint 41 and a second outer pipe joint 42, the first outer pipe joint 41 is fixedly connected to the first flow passage switching sub 31, and the second outer pipe joint 42 is fixedly connected to the third flow passage switching sub 33;
the inner pipe joint 5 comprises a first inner pipe joint 51 and a second inner pipe joint 52, the first inner pipe joint 51 is fixedly connected to the first flow channel switching sub 31, the second inner pipe joint 52 is fixedly connected to the third flow channel switching sub 33, the first inner pipe joint 51 and the first outer pipe joint 41 are coaxially arranged, and the second inner pipe joint 52 and the second outer pipe joint 42 are coaxially arranged;
the safety control device 6 comprises an inner pipe safety control device 61, a first hydraulic control pipeline 62, an annular safety control device 63 and a second hydraulic control pipeline 64, the inner pipe safety control device 61 is arranged in the first production channel and connected with the first flow channel conversion nipple 31, and the first hydraulic control pipeline 62 is connected with the inner pipe safety control device 61 to realize the opening or closing of the first production channel; the annular safety control device 63 is arranged in the second production channel and connected with the second flow channel conversion nipple 32, and the second hydraulic control pipeline 64 is connected with the annular safety control device 63 so as to open or close the second production channel.
Specifically, the inner pipe safety control device 61 is connected with the hydraulic control system of the wellhead through a first hydraulic control line 62 and the annulus safety control device 63 through a second hydraulic control line 64 respectively, so as to realize the respective opening or closing operation of the inner pipe production channel and the annulus production channel. During the use, first inner tube connects 51 and first outer tube connects 41 and corresponds respectively and connects on the inner tube and the outer tube of a concentric double-barrelled tubular column, second inner tube connects 52 and second outer tube connects 42 and corresponds respectively and connects on the inner tube and the outer tube of another concentric double-barrelled tubular column, then can make the inner tube of concentric double-barrelled tubular column and the first production passageway on the relief valve body 2 form complete inner tube production passageway, the inner tube of concentric double-barrelled tubular column, the second production passageway on outer tube and the relief valve body 2 forms complete annular space production passageway, and when inner tube production passageway and annular space production passageway opened simultaneously, then can form the full-through production passageway, in order to satisfy the large-output production demand, and then satisfy the production demand of the multichannel of concentric double-barrelled tubular column. In the production process of the offshore gas well, a user can select a production channel actually required by the gas well according to the actual production requirement, the production allocation condition and the production sand and water production conditions of the gas well. When the yield of the gas well is low, a small-drift-diameter production channel can be selected, and when the yield of the gas well is high, a large-drift-diameter production channel or a full-through production channel is selected to meet different production requirements. And the respective control of the production channels can also meet the operation requirements of water drainage and gas production of the immobile pipe column.
Meanwhile, the inner pipe safety control device 61 can independently control the opening or closing of the inner pipe production channel, and the annulus safety control device 63 can independently control the opening or closing of the annulus production channel, so that wellhead double-control over the inner pipe production channel and the annulus production channel is realized; when one of the production channels is selected, the other production channel can be closed, so that the wellhead of the production channel which is not started is not pressurized, and no matter which production channel is selected for production, when the abnormal production condition is met, the inner pipe safety control device 61 and the annular safety control device 63 can be quickly closed, the production safety requirement of offshore well control is met, and the environment pollution caused by oil gas leakage is avoided.
In this embodiment, the first production channel and the second production channel are both designed to have cylindrical structures, so that the inner tube safety control device 61 is installed in the first production channel and the annular safety control device 63 is installed in the second production channel, thereby rapidly realizing the safety control of opening or closing the first production channel and the second production channel. In the production process, the inner pipe production channels of two concentric double-pipe columns connected to two ends of the concentric double-pipe dual-control type underground safety valve for the offshore gas well sequentially pass through the first flow channel conversion nipple 31, the second flow channel conversion nipple 32 and the third flow channel conversion nipple 33 to complete connection conversion with the first production channel; the annular production channels of the two concentric double-pipe columns connected to the two ends of the concentric double-pipe dual-control type underground safety valve for the offshore gas well sequentially pass through the first flow channel conversion nipple 31, the second flow channel conversion nipple 32 and the third flow channel conversion nipple 33 to complete connection conversion with the second production channel.
If the small-drift-diameter production channel is an inner tube production channel, the large-drift-diameter production channel is an annular production channel; on the contrary, if the small-drift-diameter production channel is an annular production channel, the large-drift-diameter production channel is an inner tube production channel, and a user needs to determine the actual size of the actual concentric double-tube column. The first flow channel switching sub 31, the second flow channel switching sub 32 and the third flow channel switching sub 33 are all the prior art, and are not described herein again. The inner tube safety control device 61 and the annulus safety control device 63 may be pressure valves.
Further, in order to facilitate the connection of the first hydraulic control line 62 with the inner pipe safety control device 61 and the connection of the second hydraulic control line 64 with the annulus safety production control device 63, the respective control of the inner pipe production channel and the annulus production channel is realized, so as to meet the production and use requirements. The first flow passage conversion nipple 31 is provided with a first connecting joint communicated with the inner pipe safety control device 61, the first hydraulic control pipeline 62 is detachably connected to the first connecting joint, the second flow passage conversion nipple 32 is provided with a second connecting joint communicated with the annular safety control device 63, and the second hydraulic control pipeline 64 is detachably connected to the second connecting joint.
In this embodiment, the first hydraulic control line 62 is screwed to the first connector so as to facilitate quick connection or disconnection between the first hydraulic control line 62 and the inner tube safe production passage 61, and the second hydraulic control line 64 is screwed to the second connector so as to facilitate quick connection or disconnection between the second hydraulic control line 64 and the annulus safe production passage 63.
Further, the sealing performance of the concentric double-pipe string and the concentric double-pipe dual-control type underground safety valve for the offshore gas well is improved, so that the production and use requirements of the string are met. The concentric double-pipe dual-control type downhole safety valve for the offshore gas well further comprises an oil pipe inserting and sealing device 7, and the first end of the oil pipe inserting and sealing device 7 is fixedly connected to one end, away from the first flow passage conversion nipple 31, of the first inner pipe joint 51.
In this embodiment, the first outer pipe joint 41, the second outer pipe joint 42 and the second inner pipe joint 52 can be connected with the oil pipe insertion sealing device 7, so as to improve the sealing performance of the concentric double-pipe string and the concentric double-pipe dual-control type downhole safety valve for the offshore gas well.
Further, in order to facilitate the quick connection of the inner pipe of the concentric double pipe string to the oil pipe on the first inner pipe joint 51, the sealing means 7 is inserted to improve the connection efficiency thereof. The concentric double-pipe dual-control type underground safety valve for the offshore gas well further comprises a guide umbrella 8, the guide umbrella 8 is fixedly connected to the second end of the oil pipe insertion sealing device 7, and the guide umbrella 8 is designed to be of a spine-shaped structure.
Furthermore, in order to prevent the production channel on the concentric double-pipe dual-control type downhole safety valve for the offshore gas well from overflowing and reducing the diameter, the service life of the downhole safety valve is prolonged. The first inner pipe joint 51, the oil pipe insertion sealing device 7 and the guide umbrella 8 are all placed inside the first outer pipe joint 41.
The embodiment of the utility model provides an in, this marine gas well is with concentric double-barrelled dual control type downhole safety valve can also satisfy the production logging instrument and follow the inner tube of concentric double-barrelled tubular column and play down the logging operation, and the logging instrument is in 2 inside trafficability characteristic design methods of relief valve body do:
referring to FIG. 2, assuming that the logging tool can move to the critical state as shown, there are:
then
In the case of the triangle ABC, the number of,
therefore, the first and second electrodes are formed on the substrate,
in the triangular AEC, the cosine theorem yields:
therefore, the first and second electrodes are formed on the substrate,
therefore, the first and second electrodes are formed on the substrate,
in a triangular CGH, the cosine theorem yields:
wherein,
substituting the formula to obtain:
obtaining by solution:
and the formula is a calculation general formula of the well logging tool trafficability design.
Assume in one embodiment that h 400, e 30,
substituting the set values into formulas I, II, III, IV and V to obtain:
α＝5.4°，β＝86.57°，γ＝85.71°，
CH＝873.79mm
the verification assumption is that:
because of the fact that
The logging tool can move to a critical state as shown;
since the triangular AEF is fully equal to the triangular CGH
So the logging tool can move to the critical state at the outlet;
and because, when CH >873.79mm, the logging tool can get stuck at the entrance,
the maximum length Lmax CH 873.79mm of the logging tool is given.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A concentric double-pipe dual-control type downhole safety valve for an offshore gas well is characterized by comprising a safety valve body (2), a flow channel conversion short section (3), an outer pipe joint (4), an inner pipe joint (5) and a safety control device (6);
a first production channel and a second production channel are arranged in the safety valve body (2);
the flow channel switching short section (3) comprises a first flow channel switching short section (31), a second flow channel switching short section (32) and a third flow channel switching short section (33), the first flow channel switching short section (31) is fixedly arranged at the first end of the safety valve body (2), the third flow channel switching short section (33) is fixedly arranged at the second end of the safety valve body (2), and the second flow channel switching short section (32) is fixedly arranged on the safety valve body (2) and is arranged between the first flow channel switching short section (31) and the third flow channel switching short section (33);
the outer pipe joint (4) comprises a first outer pipe joint (41) and a second outer pipe joint (42), the first outer pipe joint (41) is fixedly connected to the first flow passage switching sub (31), and the second outer pipe joint (42) is fixedly connected to the third flow passage switching sub (33);
the inner pipe joint (5) comprises a first inner pipe joint (51) and a second inner pipe joint (52), the first inner pipe joint (51) is fixedly connected to the first flow channel conversion short section (31), the second inner pipe joint (52) is fixedly connected to the third flow channel conversion short section (33), the first inner pipe joint (51) and the first outer pipe joint (41) are coaxially arranged, and the second inner pipe joint (52) and the second outer pipe joint (42) are coaxially arranged;
the safety control device (6) comprises an inner pipe safety control device (61), a first hydraulic control pipeline (62), an annular safety control device (63) and a second hydraulic control pipeline (64), the inner pipe safety control device (61) is arranged in the first production channel and is connected with the first flow channel switching short section (31), and the first hydraulic control pipeline (62) is connected with the inner pipe safety control device (61) to open or close the first production channel; the annular safety control device (63) is arranged in the second production channel and connected with the second flow channel conversion nipple (32), and the second hydraulic control pipeline (64) is connected with the annular safety control device (63) to open or close the second production channel.
2. The concentric double-pipe dual-control type downhole safety valve for the offshore gas well as defined by claim 1, wherein a first connecting joint communicated with the inner pipe safety control device (61) is arranged on the first flow passage switching nipple (31), the first hydraulic control pipeline (62) is detachably connected to the first connecting joint, a second connecting joint communicated with the annular safety control device (63) is arranged on the second flow passage switching nipple (32), and the second hydraulic control pipeline (64) is detachably connected to the second connecting joint.
3. A concentric dual-string dual-control type downhole safety valve for an offshore gas well as recited in claim 1, further comprising a tubing insertion seal (7), a first end of the tubing insertion seal (7) being fixedly connected to an end of the first inner pipe joint (51) remote from the first flow path switching sub (31).
4. The concentric double-tube dual-control type downhole safety valve for offshore gas wells according to claim 3, further comprising a guide umbrella (8), wherein the guide umbrella (8) is fixedly connected to the second end of the tubing insertion sealing device (7), and the guide umbrella (8) is designed in a spine structure.
5. The concentric double-tube dual-control type downhole safety valve for offshore gas wells according to claim 4, characterized in that the first inner tube joint (51), the tubing insert sealing device (7) and the guide umbrella (8) are all disposed within the first outer tube joint (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022138761.7U CN213016292U (en) | 2020-09-25 | 2020-09-25 | Concentric double-tube dual-control type downhole safety valve for offshore gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022138761.7U CN213016292U (en) | 2020-09-25 | 2020-09-25 | Concentric double-tube dual-control type downhole safety valve for offshore gas well |
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| Publication Number | Publication Date |
|---|---|
| CN213016292U true CN213016292U (en) | 2021-04-20 |
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|---|---|---|---|
| CN202022138761.7U Expired - Fee Related CN213016292U (en) | 2020-09-25 | 2020-09-25 | Concentric double-tube dual-control type downhole safety valve for offshore gas well |
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| Country | Link |
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| CN (1) | CN213016292U (en) |
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2020
- 2020-09-25 CN CN202022138761.7U patent/CN213016292U/en not_active Expired - Fee Related
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Granted publication date: 20210420 |