CN212671670U - Wellhead simulation device for blowout preventer design confirmation test - Google Patents
Wellhead simulation device for blowout preventer design confirmation test Download PDFInfo
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- CN212671670U CN212671670U CN202020398531.1U CN202020398531U CN212671670U CN 212671670 U CN212671670 U CN 212671670U CN 202020398531 U CN202020398531 U CN 202020398531U CN 212671670 U CN212671670 U CN 212671670U
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Abstract
The utility model provides a blowout preventer design confirms experimental well head analogue means of using. The device can comprise a simulated shaft, a lifting body and an energy storage system, wherein the simulated shaft is of a cylindrical structure and is provided with a semi-closed cavity with an opening facing upwards; the lifting body is arranged at the upper end of the simulated shaft, the lifting body is of a hollow structure and is provided with a second cavity and a plurality of groups of communicating cavities, the second cavity is provided with openings at the upper end and the lower end of the lifting body, the first cavity and the second cavity are coaxial and are communicated, and the communicating cavities communicate the second cavity with the outside; the energy storage system comprises a plurality of energy storage manifolds and steel cylinder groups, the energy storage manifolds are the same in number with the communicating cavity groups and can be in one-to-one correspondence, and the energy storage manifolds and the lifting body can be communicated through the high-pressure hose assemblies. The utility model discloses can satisfy the performance test of the preventer of big latus rectum and high pressure, can solve the problem that the test medium sprays, improve the security of preventer performance test, practice thrift the cost of labor, improve test efficiency.
Description
Technical Field
The utility model relates to a petroleum industry bores and adopts equipment detection technical field, especially, relates to a simulation wellhead assembly of experimental usefulness is confirmed in petroleum industry preventer design.
Background
In the drilling process of the petroleum industry, a blowout preventer is used to be installed on a wellhead (the blowout preventer is equipment for closing a passageway of the wellhead when a blowout accident occurs) for safe production. Blowout preventers need to be tested for design validation before being put into mass production. The blowout preventer is divided into an annular blowout preventer and a ram blowout preventer, and the design confirmation test is divided into a static test and a dynamic test, wherein the static test mainly comprises a drill rod suspension test, and the dynamic test mainly comprises a fatigue test and a pressure-bearing tripping life test.
In order to complete the dynamic and static tests in the design confirmation test, a set of simulated wellhead device for the blowout preventer design confirmation test is designed and manufactured, the blowout preventer can be installed, and the pressure condition of a shaft in a drilling site is simulated; it is also possible to accommodate the volume (liquid having incompressible properties) created by the simulated drill pipe entering the closed blowout preventer wellbore passage when performing a pressure pull-down life test.
In the prior art, the simulated wellhead pressure is 105MPa, and a suspension test of 140MPa cannot be carried out. The overflowing area of a connecting pipe for connecting the simulation wellhead device and the energy storage system is far smaller than the cross-sectional area of the simulation test drill rod, so that the pressure in the blowout preventer shaft is increased, and a test medium is jetted outwards through a gate plate rubber core of the sealed simulation test drill rod.
SUMMERY OF THE UTILITY MODEL
To the not enough that exist among the prior art, the utility model aims to solve one or more problems that exist among the above-mentioned prior art. For example, one of the objects of the present invention is to provide a wellhead simulator that can help to conveniently complete blowout preventer design confirmation test work.
In order to achieve the above object, one aspect of the present invention provides a wellhead simulation device for blowout preventer design confirmation test. The apparatus may comprise: the simulation shaft is of a cylindrical structure and is provided with a first cavity, the first cavity is a semi-closed cavity, and only one opening is formed in the upper end of the simulation shaft; the lower end of the lifting body is connected with the upper end of the simulated shaft, the lifting body is of a hollow structure and is provided with a second cavity and a plurality of groups of communicating cavities, each group of communicating cavities comprises two opposite third cavities, the second cavity forms an opening at the upper end and the lower end of the lifting body respectively, the second cavity is coaxial with the first cavity and is communicated with the first cavity, and the third cavity communicates the second cavity with the outside; the energy storage system comprises a plurality of energy storage manifolds and a plurality of steel cylinder groups, the number of the energy storage manifolds is the same as the group number of the communicated cavities, the energy storage manifolds can be in one-to-one correspondence with the group number of the communicated cavities, each energy storage manifold can be directly communicated with the two third cavities in the corresponding relationship or communicated with the three third cavities through high-pressure hose assemblies, the number of the steel cylinder groups and the energy storage manifolds is the same, the steel cylinders can be in one-to-one correspondence, and the steel cylinders included in each steel cylinder group can be installed on the energy storage manifolds in the corresponding relationship.
The utility model discloses another aspect also provides a wellhead analogue means for blowout preventer design confirmation test. The apparatus may comprise: the device comprises a simulation shaft, a lifting body and a plugging piece, wherein the simulation shaft is of a cylindrical structure and is provided with a first cavity, the first cavity is a semi-closed cavity, and only one opening is formed in the upper end of the simulation shaft by the cavity; the lower end of the lifting body is connected with the upper end of the simulated shaft, the lifting body is of a hollow structure and is provided with a second cavity and a plurality of third cavities, the second cavity is provided with an opening at the upper end and the lower end of the lifting body respectively, the second cavity is coaxial with and communicated with the first cavity, and the third cavities communicate the second cavity with the outside; the plugging piece can include a plurality of plugging components, the number of plugging components is the same with the third cavity and can the one-to-one, and every plugging component can both plug the third cavity that is corresponding relation.
According to one or more exemplary embodiments of the present invention, the upper end of the dummy shaft may be a flange structure.
According to one or more exemplary embodiments of the present invention, a sealing member may be provided between the upper end surface of the dummy shaft and the lower end surface of the elevating body.
According to the utility model discloses an one or more exemplary embodiment, the upper and lower end of the body that rises all can be for planting a flange structure, and all install a plurality of locating pin on the terminal surface from top to bottom.
According to the utility model discloses an one or more exemplary embodiment, the up end of simulation pit shaft can be provided with a plurality of locating hole, and the quantity of locating hole is the same and the one-to-one with the locating pin quantity that risees the installation of terminal surface under the body, and every locating pin can both insert in the locating hole that is corresponding.
According to one or more exemplary embodiments of the utility model, the third cavity can form an opening inwards on the cavity wall of second cavity, has formed an opening outwards on the outer wall that rises the side of the body, third cavity and second cavity coaxial line and mutually perpendicular, the device still includes a plurality of union flange, the union flange is the same and the one-to-one with the quantity of third cavity, every union flange is all installed and is being the opening part that corresponds the third cavity outwards.
According to one or more exemplary embodiments of the utility model, still can be provided with pressurization pore and pressure release pore on the body that rises, wherein, pressurization pore can be connected the second cavity with the external world, and pressure release pore also can be with second cavity and external intercommunication.
According to one or more exemplary embodiments of the present invention, the elevating body may further include a pressure test connector installed in the pressure relief duct, and a plug installed in the pressure relief duct.
According to one or more exemplary embodiments of the present invention, the simulated wellbore may be mounted on a flat car.
According to one or more exemplary embodiments of the present disclosure, the flow area of the high pressure hose assembly and the accumulator manifold may be slightly larger than the cross-sectional area of the test mandrel.
Compared with the prior art, the beneficial effects of the utility model can include: the performance test of the blowout preventer with large drift diameter and high pressure can be met; the problem of test medium injection can be solved, the safety of blowout preventer performance test is improved, the labor cost is saved, and the test efficiency is improved.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 illustrates a schematic cross-sectional view of a wellhead simulation device for a blowout preventer design validation test in accordance with the present invention;
FIG. 2 shows a schematic cross-sectional view of a simulated wellbore and a riser of the present invention in a connected relationship;
FIG. 3 shows a schematic cross-sectional view of a simulated wellbore;
fig. 4 shows a schematic cross-sectional view of the elevated body.
Description of the main reference numerals:
100-a simulated wellbore, 110-a first cavity; 200-a lifting body, 210-a second cavity and 220-a third cavity; a high pressure hose assembly 300; an energy storage system 400; 510-a first seal, 520-a second seal, 530-a third seal, 540-a fourth seal; 610-positioning pins; 710-pressure test joint, 720-pressure relief plug; 800-plugging component, 810-union cap, 820-plug, 830-sealing ring; 910-first connector, 920-second connector, 930-third connector, 940-fourth connector; 1000-flat car.
Detailed Description
Hereinafter, the wellhead simulation device for blowout preventer design confirmation test of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.
In an exemplary embodiment of the present invention, as shown in fig. 1, the wellhead simulation device for blowout preventer design validation testing may include: a simulated wellbore 100, an elevated body 200, a high pressure hose assembly 300, and an accumulator system 400 connected in series.
As shown in fig. 3, the simulated wellbore 100 is a tubular structure and has a first cavity 110, and the first cavity 110 is a semi-closed cavity and forms only one opening at the upper end of the simulated wellbore.
As shown in fig. 1 and 2, the elevated body 200 may be disposed above the simulated wellbore 100. As shown in fig. 4, the lifting body 200 may be a hollow structure, and includes 1 second cavity 210 and a plurality of groups of communicating cavities 220, and the second cavity 210 may form an opening at each of the upper and lower ends of the lifting body; the number of the groups of the communicating cavities can be 2-4, each group can include two opposite third cavities 220, and as shown in fig. 4, the two opposite third cavities can be coaxial. As shown in fig. 1 and 2, the second cavity 210 may be coaxial and in communication with the first cavity 110. As shown in fig. 4, the third cavity 220 can communicate the second cavity 210 with the outside, and the third cavity 220 forms an inward opening on the cavity wall of the second cavity 210 and an outward opening on the outer wall of the side of the elevated body 200. The second cavity 210 is coaxial with the first cavity 110 and perpendicular to each other. The third cavities 220 can be uniformly disposed on the elevated body 200.
In this embodiment, the upper end of the simulated wellbore 100 may be a flange structure, the lower end may be a blind hole structure, and the rated working pressure may be 140MPa or less.
As shown in fig. 1 and 2, the simulated wellbore 100 and the elevated body 200 in which the blowout preventer is installed may be connected by a first connector connection 910, and the first connector 910 may include a bolt and a nut. As shown in fig. 1, a first seal 510 may be used to seal between the simulated wellbore 100 and the riser 200, and the first seal 510 may be a metal sealing grommet.
In this embodiment, the upper and lower ends of the lifting body 200 may be both of the wire-cutting flange design. As shown in fig. 1 and 4, the elevating body 200 may have mounting pins 610 on upper and lower end surfaces thereof. Accordingly, the upper end surface of the simulated wellbore 100 may be provided with locating holes that mate with the locating pins 610.
In this embodiment, as shown in fig. 1, the elevation body 200 may be connected to the flat car 1000 by a second connection member 920, and the second connection member 920 may include a bolt and a nut.
In the present embodiment, as shown in fig. 4, the third chamber 220 may be disposed at the middle of the elevating body 200 to achieve communication with the energy storage system 400.
As shown in fig. 1, the outward-opened outer side of the third cavity 220 may be mounted with a third connector 930, and the third connector 930 may include a union flange that may be coupled to the elevating body 200 by using bolts and nuts. The union flange may be sealed to the elevated body 200 with a second seal 520, and the second seal 520 may be a metal gasket ring.
In the present embodiment, the elevated body 200 may be a cylinder or a polygonal body having a hollow cavity, for example, the cross-section of the elevated body 200 may be a circular ring. Of course, the shape is not limited thereto, and may be any shape that can be applied to the blowout preventer design confirmation test of the present invention.
In this embodiment, the cross section of the first cavity 210 of the lifting body 200 may be circular, and the longitudinal section may be regular-sided or rectangular. The second cavity 220 may be a cylindrical or cylinder-like cavity. Of course, the shapes of the first cavity 210 and the second cavity 220 are not limited to this, as long as the test requirements can be satisfied.
In this embodiment, the upper end portion of the lifting body 200 may further be provided with a plurality of pressurizing ducts and pressure relief ducts. The pressurization port and the pressure relief port may communicate the second chamber 210 with the outside, and both may have an axis perpendicular to the axis of the second chamber 210.
The number of the pressurizing channels can be 2-6, for example 4, and the pressurizing channels can be pressurizing screw holes. As shown in fig. 4, a pressurized tunnel (not shown) may be fitted with a test connection 710, and the test connection 710 may be connected to a test pump.
The number of the pressure relief holes may be 2 to 6, for example, 4, the pressure relief holes may be pressure relief screw holes, and as shown in fig. 4, a plug (also referred to as a pressure relief plug) 720 may be installed in the pressure relief hole (not shown). When the pressure relief is failed, the pressure can be manually relieved at the pressure relief plug.
In the present embodiment, the connection between the high pressure hose assembly 300 and the elevating body 200 may be a union connection. As shown in fig. 1, a third seal 530 may be used to seal against a metal spherical surface on one end face of the high pressure hose assembly 300. Third seal assembly 530 may be a clip cloth backing ring.
In this embodiment, as shown in fig. 1, the connection between the other end of high pressure hose assembly 300 and accumulator system 400 (i.e., to the accumulator manifold) may be made with a fourth connection 940, which may comprise a bolt and nut. A fourth seal 540, which may be a metal gasket ring, may be used to seal between high pressure hose assembly 300 and accumulator system 400 (i.e., between the accumulator manifold).
In this embodiment, each energy storage manifold may include a pipeline, and one end of the pipeline may be connected to the steel cylinders in the corresponding steel cylinder group, that is, the steel cylinders in the corresponding steel cylinder group may be sequentially connected to one end of the pipeline, and the end of one end of the pipeline may be a closed end; the bottle mouth of the steel cylinder can be provided with an adjusting valve; the other end of the line may be divided into two parallel segments, which may be respectively connected to the two third cavities 230 corresponding to the accumulator manifold one by one via a high pressure hose assembly 300.
In this embodiment, each energy storage manifold may include a pipeline, a plurality of first pipe segments and two second pipe segments, the first pipe segments are the same with the steel bottle quantity in the corresponding steel bottle group and correspond one to one, under the condition that the first pipe segments quantity is greater than 1, a plurality of first pipe segments are arranged in parallel at one end of the pipeline and communicated with the pipeline, the end of the first pipe segment departing from the pipeline is a closed end, each steel bottle in the steel bottle group may be arranged on the corresponding first pipe segment, and the mouth of each steel bottle may be provided with an adjusting valve. The two second tube segments correspond to the two third cavities of the accumulator manifold one-to-one, the two second tube segments are arranged in parallel at the other end of the pipeline and are communicated with the pipeline, and each tube segment can be communicated with one third cavity 230 through one high-pressure hose assembly 300.
In this embodiment, and as an example only, the accumulator system 400 may have 6 accumulator cylinders, divided into 2 accumulator manifolds, each manifold may have 3 cylinders installed, and the rated working pressure of the accumulator manifold may be 21 MPa.
The wellhead simulation device in the exemplary embodiment may be used for bearing tripping tests.
In this embodiment, there is a detachable connection between the elevating body 200 and the high pressure hose assembly 300.
In another exemplary implementation of the present invention, a blowout preventer design validation test wellhead simulation device may include a block piece 800, and in the previous exemplary embodiment, a simulated wellbore 100, a riser 200, a first connector 910, a second connector 920, a third connector 930, a first seal 510, and a second seal 520.
In this embodiment, the plugging member may include a plurality of plugging components 800, the number of the plugging components 800 is the same as that of the third cavities 220, and the plugging components 800 may correspond to the third cavities 220 one by one, and each plugging component 800 may plug the third cavities 220 in a corresponding relationship.
As shown in fig. 2, the plugging assembly 800 may include a union cap 810, a plug 820 and a sealing ring 830. in a blowout preventer hang test at a highest rated pressure (e.g., 140MPa), the high pressure hose assembly 400 may be removed and the plug 820 and sealing ring 830 may then be installed in a union flange on which the union cap 810 may be installed, and the union cap 810 may be of a high load bearing material.
The wellhead simulation device in the exemplary embodiment may be used for hang-up testing.
In order to better understand the above exemplary embodiments of the present invention, the following further description is given with reference to specific examples.
(1) Pressure bearing tripping test
The elevated body 200 may be coupled to the flatbed 1000 at the pit by a second coupling member 920, the union flange may be coupled to the elevated body 200 using a third coupling member around the middle of the elevated body 200, and the elevated body 200 and the union flange may be sealed using a metal gasket ring.
And lifting the lifting short section on the ground onto a working platform, and connecting the sealing backing ring with the blowout preventer by using a connecting bolt and a nut to form a blowout preventer assembly.
And connecting the adapter and the simulation test straight drill rod on the upper buckling machine to form a test tubular column assembly.
The assembled blowout preventer assembly is hoisted above the pit riser 200 to connect with the riser 200.
The upper end part of the lifting body 200 is provided with 4 pressurizing and pressure-releasing screw holes, the pressurizing screw holes are provided with pressure test connectors 710 and connected with a pressure test pump, and the pressure-releasing screw holes are provided with three plugs. The elevated body 200 is connected to the energy storage system 400 for absorbing volume by 4 sets of high pressure hose assemblies 300 (the high pressure hose assemblies 300 are connected to the elevated body 200 as unions and are sealed by a metal spherical surface sandwiched between a flat backing ring and the end surface of the high pressure hose assembly 300. the high pressure hose assembly 300 is connected to the energy storage system 400 by bolts and nuts and is sealed by a metal sealing backing ring.
And filling clear water into a cavity in the device consisting of the blowout preventer assembly, the lifting body 200 and the simulated shaft 100 for testing.
(2) Suspension test
And connecting the adapter and the drill rod with the drill rod joint for the simulation test on the button attaching machine to form a test tubular column assembly.
After the high pressure hose assembly 300 connected around the middle of the elevated body 200 is removed, a plug (i.e., a union flange plug) 820 and a sealing ring (e.g., an O-ring) are installed in the union flange hole, and then a high pressure union cap 810 for a suspension test is mounted and screwed.
And filling clear water into a cavity in a device consisting of the blowout preventer assembly, the lifting body B and the simulation shaft A so as to carry out a test.
To sum up, the utility model discloses a blowout preventer design is confirmed experimental well head analogue means's for advantage can include:
(1) the utility model discloses a design the simulation well head of jumbo size, high pressure rank (for example 140MPa), through the improvement of structure, the optimization of connecting the manifold, can satisfy the performance test of the preventer of big latus rectum, high pressure.
(2) The utility model discloses can solve the problem that test medium sprays, improve the experimental security of preventer performance, practice thrift the cost of labor, improve test efficiency.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (17)
1. A wellhead simulation device for blowout preventer design validation testing, the device comprising: a simulated wellbore, a riser, and an accumulator system, wherein,
the simulation shaft is of a cylindrical structure and is provided with a first cavity, the first cavity is a semi-closed cavity, and only one opening is formed in the upper end of the simulation shaft by the cavity;
the lower end of the lifting body is connected with the upper end of the simulated shaft, the lifting body is of a hollow structure and is provided with a second cavity and a plurality of groups of communicating cavities, each group of communicating cavities comprises two opposite third cavities, the second cavity forms an opening at the upper end and the lower end of the lifting body respectively, the second cavity is coaxial with the first cavity and is communicated with the first cavity, and the third cavity communicates the second cavity with the outside;
the energy storage system comprises a plurality of energy storage manifolds and a plurality of steel cylinder groups, the number of the energy storage manifolds is the same as the group number of the communicated cavities, the energy storage manifolds can be in one-to-one correspondence with the group number of the communicated cavities, each energy storage manifold can be directly communicated with the two third cavities in the corresponding relationship or communicated with the three third cavities through high-pressure hose assemblies, the number of the steel cylinder groups and the energy storage manifolds is the same, the steel cylinders can be in one-to-one correspondence, and the steel cylinders included in each steel cylinder group can be installed on the energy storage manifolds in the corresponding relationship.
2. The blowout preventer design validation test wellhead simulation device of claim 1, wherein the upper end of the simulated wellbore is of a flanged construction.
3. The blowout preventer design validation test wellhead simulation device of claim 1, wherein a seal is disposed between an upper end surface of the simulated wellbore and a lower end surface of the riser.
4. The wellhead simulation device for the blowout preventer design confirmation test according to claim 1, wherein the elevating body has upper and lower ends of a filament-cutting flange structure, and a plurality of positioning pins are mounted on the upper and lower end surfaces.
5. The wellhead simulation device for the blowout preventer design validation test according to claim 1, wherein the third cavity forms an inward opening in the cavity wall of the second cavity and an outward opening in the outer wall of the side surface of the lifting body, the third cavity and the second cavity are coaxial and perpendicular to each other, the device further comprises a plurality of union flanges, the number of the union flanges is the same as that of the third cavity, the union flanges correspond to the third cavity one by one, and each union flange is installed at the outward opening of the third cavity in a corresponding relationship.
6. The wellhead simulation device for design validation testing of blowout preventers according to claim 1, wherein the riser body is further provided with a pressurization port and a pressure relief port, wherein,
the second cavity can be connected with the outside through the pressurizing hole channel, and the second cavity can be communicated with the outside through the pressure relief hole channel.
7. The blowout preventer design validation testing wellhead simulation device of claim 6, wherein the riser body further comprises a pressure test sub mounted within the pressurized tunnel and a choke plug mounted within the pressure relief tunnel.
8. The blowout preventer design validation test wellhead simulation device of claim 1, wherein the simulated wellbore is mounted on a flat car.
9. The blowout preventer design validation test wellhead simulation device of claim 1, wherein the flow area of the high pressure hose assembly and accumulator manifold is slightly larger than the cross-sectional area of the test mandrel.
10. A wellhead simulation device for blowout preventer design validation testing, the device comprising: simulating a wellbore, a riser, and a plug, wherein,
the simulation shaft is of a cylindrical structure and is provided with a first cavity, the first cavity is a semi-closed cavity, and only one opening is formed in the upper end of the simulation shaft by the cavity;
the lower end of the lifting body is connected with the upper end of the simulated shaft, the lifting body is of a hollow structure and is provided with a second cavity and a plurality of third cavities, the second cavity is provided with an opening at the upper end and the lower end of the lifting body respectively, the second cavity is coaxial with and communicated with the first cavity, and the third cavities communicate the second cavity with the outside;
the plugging piece comprises a plurality of plugging components, the number of the plugging components is the same as that of the third cavities, the plugging components can correspond to the third cavities one by one, and each plugging component can plug the third cavities in corresponding relation.
11. The blowout preventer design validation test wellhead simulation device of claim 10, wherein the upper end of the simulated wellbore is a flanged structure.
12. The blowout preventer design validation test wellhead simulation device of claim 10, wherein a seal is disposed between an upper end surface of the simulated wellbore and a lower end surface of the riser.
13. The wellhead simulator for design validation testing of blowout preventers according to claim 10, wherein the raised body has a wire-cutting flange structure at both upper and lower ends, and a plurality of positioning pins are mounted on both upper and lower end faces.
14. The blowout preventer design validation test wellhead simulation device of claim 10, wherein the third cavity forms an inward opening in the cavity wall of the second cavity and an outward opening in the outer wall of the side of the raised body, the third cavity is coaxial with the second cavity and perpendicular to the second cavity, the device further comprises a plurality of union flanges, the number of the union flanges is the same as the number of the third cavities, the union flanges correspond to the number of the third cavities one by one, and each union flange is mounted at the outward opening of the third cavity in a corresponding relationship.
15. The blowout preventer design validation testing wellhead simulation device of claim 10, wherein the riser body is further provided with a pressurization port and a pressure relief port, wherein,
the second cavity can be connected with the outside through the pressurizing hole channel, and the second cavity can be communicated with the outside through the pressure relief hole channel.
16. The blowout preventer design validation testing wellhead simulation device of claim 15, wherein the riser body further comprises a pressure test sub mounted within the pressurized tunnel and a choke plug mounted within the pressure relief tunnel.
17. The blowout preventer design validation test wellhead simulation device of claim 10, wherein the simulated wellbore is mounted on a flat car.
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