KR20180023187A - Flow simulating apparatus for pipeline of subsea petroleum production system - Google Patents

Abstract

The present invention relates to a flow simulating apparatus, which can obtain test information for designing a pipeline by simulating a behavior of oil or gas occurring from the pipeline installed in a submarine oilfield using test fluid. According to the present invention, the flow simulating apparatus comprises: a test fluid supplying unit for supplying the test fluid; a horizontal flowing unit receiving the test fluid from the test fluid supplying unit to form a horizontal flow path; an ascending flowing unit connected to a front end of the horizontal flowing unit to form an ascending flow path through which the test fluid can be ascendant; a connection flowing unit connected to an upper end of the ascending flowing unit to enable the test fluid to flow; an observation unit installed in the horizontal flowing unit and the ascending flowing unit to observe the flowing status of the test fluid; an inclined shaft unit installed in a bottom end of the ascending flowing unit to enable the posture of the ascending flowing unit to be inclined with respect to the horizontal flowing unit; and an inclination operating unit coupled to the ascending flowing unit to change an inclination of the ascending flowing unit.

Description

{Flow simulating apparatus for pipeline of subsea petroleum production system}

The present invention relates to a fluid flow simulation apparatus for a subsea oil pipeline, and more particularly, to a pipeline system that simulates the behavior of crude oil or gas generated in a pipeline installed in a submarine oilfield using a test fluid, The present invention relates to a flow simulation apparatus capable of acquiring test information for a test apparatus.

As fossil fuel exploitation technology develops, the production of crude oil and natural gas buried in the deep sea is becoming common.

The development of oilfields in the seabed is very different from that on the land and the production environment, and the stability of the flow in the pipeline that transports mined crude oil and natural gas installed on the sea floor is an important issue.

Referring to FIGS. 1 and 2, in the process of ascending from the well W to the well head B, the crude oil or the like undergoes a sudden change in flow as it passes through the vertical pipe, Lt; / RTI >

Also, during the process of the crude oil rising from the submarine pipeline (D) to the platform (A), the continuous flow of the horizontal pipe and the riser (Eiser) do.

In particular, the behavior of fluids generated by the continual passage of crude oil through horizontal and vertical pipes with severe temperature changes is closely related to the productivity in developing the submarine oilfield.

Korean Patent Registration No. 10-1502948 and Korean Patent Registration No. 10-1431531 disclose a simulated test apparatus relating to the accumulation of wax in the process of transferring crude oil and the like produced from a seabed well.

However, in such simulation devices, there is no configuration for simulating the flow of crude oil in the course of ascending from the submarine pipeline D to the platform A via the riser E, It is not suitable for carrying out simulation tests for various installation conditions.

FIG. 3 is a block diagram of a pipeline transfer process simulator described in Korean Patent Publication No. 10-1076673, which simulates the process of supplying a test fluid and transporting it using a pipeline, In order to accumulate the data on the state changes occurring during the transferring process.

That is, the test fluid is passed from the reservoir 1 through the high-pressure pump 2, the pressure regulating valve 3, the cooler 4 and the heater 5 to the test section 6, Is formed by the view cell (7), and forms a circulation loop through which the test fluid as a whole can circulate.

However, the simulator of FIG. 3 simulates a pipeline transfer process of carbon dioxide for underground storage of the ocean, and in the process of ascending from the pipeline D to the platform A via the riser E, And there is no configuration for simulating the flow of the crude oil of the pipeline or for the various installation states of the pipeline is the same as the above-described prior arts.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a method of analyzing a flow characteristic of crude oil mined from the sea floor along a pipeline installed on the sea floor, And to provide a fluid flow simulation apparatus for a submarine oil pipeline having a flow characteristic of a process of ascending to a platform through a riser and a structure capable of observing a flow change according to various installation states of the pipeline and acquiring data.

The fluid flow simulation apparatus of the subsea oil pipeline according to the present invention comprises a test fluid supply section for supplying a test fluid, a horizontal fluid flow section for supplying a test fluid from the test fluid supply section to form a horizontal flow path, A rising fluid portion connected to the tip of the fluidized portion to form a flow path in which the test material ascends; a connection fluid portion connected to the upper end of the upward flow portion to cause the test fluid to flow from the upward fluidized portion; An oblique shaft portion provided at a lower end of the upward flow portion so that the posture of the upward flow portion can be inclined with respect to the horizontal flow portion; And an inclined driving unit coupled to the eccentric portion to vary the inclined angle of the upward flow portion with respect to a vertical line at a predetermined angle about the inclined axis portion .

Further, the present invention is characterized in that the present invention further comprises a cooling unit installed above the observation unit in the upward movement part and cooling the test fluid rising along the upward line.

According to the present invention, the connecting flow portion is inclined to connect the upper end of the upward flow portion and the rear end of the horizontal flow portion, so that the test fluid flows out from the upward flow portion to flow into the horizontal flow portion, And a stretchable and contractible portion which is provided to bend so as to be able to adjust the length of the connecting flow portion.

Further, the present invention is characterized in that the first inclined driver is operated such that the inclined drive portion pulls or pushes the ascending flow portion so that the ascending flow portion can be inclined in the first direction with respect to the vertical line, Further comprising a second warp driver operable to pull or push the upward flow portion such that the upward flow portion is inclined in a second direction perpendicular to the first direction with respect to a vertical line.

Further, the present invention is characterized in that the observation section is a window capable of visual observation, and the observation window includes a first observation window provided at a distal end of the horizontal flow section and a second observation window provided at a lower end of the upward flow section And a change in the flow state of the test fluid can be observed at a corner portion where the horizontal flow portion and the upward flow portion meet.

Further, the present invention is characterized in that the horizontal moving part is provided with a first temperature adjusting jacket for regulating the temperature of the test fluid on the rear side of the first observation window, and the temperature of the test fluid is also set on the upward movement part, The first temperature control jacket and the second temperature control jacket are configured such that a coolant of the same temperature flows through the first temperature control jacket and the second temperature control jacket, The temperature of the test fluid prior to entering the cooling section can be adjusted to the temperature of the subsea well by the third temperature control jacket, and a third temperature control jacket for controlling the temperature of the test fluid entering the sub- .

The fluid flow simulation apparatus of the submarine oil pipeline of the present invention according to the above-mentioned configuration is simulated for ascending from the pipeline of the sea bed to the platform through the riser by the horizontal flow portion and the upward flow portion and the observation portion The flow state can be visualized.

Further, in the present invention, the circulation loop of the test fluid is formed by the horizontal fluid flow portion, the upward fluid flow portion, and the connection fluid flow portion, so that the simulation test can be continuously performed with the limited test fluid.

In addition, since continuous testing can be performed by varying the ascending and descending angles at various inclination angles by the inclined shaft portion and the inclined driving portion, the present invention is easy to observe the flow change corresponding to various installation states of the submarine pipeline and to test the data acquisition And can proceed efficiently.

In addition, in the present invention, even if the upward flow portion is inclined and changed by the inclined shaft portion and the inclined driving portion, the elongation and contraction adjusting portion is provided in the connecting fluid portion, Lt; / RTI >

1 is a conceptual diagram illustrating a simplified configuration of a subsea oilfield mining system;
FIG. 2 is an explanatory view for explaining a cross-sectional configuration of the submarine oilfield mining system of FIG.
3 is a block diagram of an apparatus for simulating a pipeline transfer process by a conventional test fluid
4 is a perspective view illustrating the configuration of a fluid flow simulation apparatus of a subsea oil pipeline according to an embodiment of the present invention;
5 is a structural explanatory view of a configuration of a fluid flow simulation apparatus of a submarine oil pipeline according to an embodiment of the present invention
6 is an explanatory view of operation of the fluid flow simulation apparatus of the submarine oil pipeline according to the embodiment of the present invention,
7 is a structural explanatory view of a configuration of a fluid flow simulation apparatus of a submarine oil pipeline according to another embodiment of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

4 and 5, a fluid flow simulation apparatus of a subsea oil pipeline according to an embodiment of the present invention includes a test fluid supply unit 10 for supplying a test fluid, a test fluid supply unit 10 for testing the test fluid supply unit 10, A horizontal moving part 20 to which a fluid is supplied to form a horizontal flow path, a rising fluid part 30 connected to the front end of the horizontal fluid part 20 to form a flow path in which the test material ascends, A connecting fluid flow portion 40 connected to the upper end of the rising fluid flow portion 30 and allowing the test fluid to flow from the rising fluid flow portion 30, (30, 30) for observing the flow state of the fluid, and an observation section (21, 31, 35) for observing the flow state of the fluid. And an inclined shaft portion (61) which is connected to the upwardly moving portion (30) And a tilt driving unit (63,64) to a predetermined tilt angle with respect to the change in the vertical line.

The test fluid supply part 10 is a part where test fluid is stored and supplied. Test fluids can be used directly in crude oil produced in a particular region or mixed with hydrocarbons such as methane, ethane and propane in a suitable ratio to provide the fluid properties of the region being tested.

Specifically, the test fluid supply part 10 stores the test fluid in the cylinder 13 and is connected to the rear end of the horizontal fluid part 20 by the supply line 15 provided with the on-off valve 14 to supply the test fluid . For reference, in the present specification and claims, the rear end of the horizontal fluid portion 20 is the end of the test fluid entrance, and the tip of the horizontal fluid portion 20 is the end of the test fluid that exits the horizontal fluid portion 20 (30).

The horizontal flow section 20 is a part where the test fluid flows horizontally, and is a pipeline in which the crude oil is horizontally installed on the sea floor.

The horizontal fluid unit 20 horizontally moves the test fluid in the horizontal tubular body and the horizontal tubular body is provided with a pressure regulator 24 to regulate the pressure of the test fluid flowing through the horizontal tubular body to the set pressure, And a temperature sensor 26 are provided to measure the pressure and the temperature of the test fluid discharged from the pressure regulator 24.

The test fluid can be heated or cooled to the set temperature when the temperature measured by the temperature sensor 26 is not within the set range because the first temperature adjusting jacket 22 is wound around the horizontal tube.

The test fluid that has passed through the first temperature regulating jacket 22 is supplied to the upward flow portion 30.

The upward flow portion 30 is a portion for simulating a riser for raising the crude oil in the subsea pipeline or on the offshore platform and has a corner portion in which the flow is switched from the horizontal flow portion 20 to the upward flow portion 30, Is the part where the flow change is relatively large and occurs suddenly. Therefore, it is estimated that the phase change and the flow change of the crude oil occur rapidly in the area where the crude oil starts to rise in the pipeline installed on the sea floor or through the riser.

Therefore, it is very important to observe the phase change and the behavior of the test fluid relative to the corner portion of the flow simulation apparatus. Therefore, the observation units 21 and 31 as the visualization apparatus are provided near the corners.

In this embodiment, the observation portions 21, 31, and 35 are configured as observation windows so that they can be visually observed, but they may be observed by acquiring images that are replaced with observation cameras.

The observation window is provided with the first observation window 21 and the second observation window 31 at the distal end portion of the horizontal flow portion 20 and the lower end portion of the upward flow portion 30, Observe.

The observation window can be replaced by an observation camera, in which case an image of the behavior of the test fluid can be obtained and observed through a separate monitor.

Since the upward flow portion 30 simulates the riser of the pipeline installed on the sea bed, it is formed as a vertical tube erected vertically.

The lower end of the vertical tube body is provided with a tilting shaft portion 61 for causing the tilting motion of the upward movement portion 30 and a second observation window 31 and a second temperature regulation jacket 32) are sequentially installed.

The first temperature regulation jacket 22 and the second temperature regulation jacket 32 are preferably adjusted to the same temperature by configuring the same refrigerant to flow. This provides a realistic temperature environment at the corners of the simulator with little ambient temperature difference where the riser begins to rise from the subsea pipeline to the riser.

The inclined shaft portion 61 has a structure in which the ball 61a and the socket 61b are coupled so that the upward movement portion 30 can smoothly move in the present embodiment, The inclined shaft portion 61 may be a flexible portion connected to the horizontal tubular body of the horizontal flow portion 20 and the flexible portion may be formed by the upward flow portion 30 And can serve as a turning center for inclined operation.

A view cell 38, a third temperature control jacket 33 and a third observation window 35 are separately provided on the upper side of the second temperature control jacket 32. The view cell 38 scans the flow of the test fluid to acquire an image. The third temperature regulating jacket 33 regulates the test fluid to the temperature in the subsea well to enter the cooling section 50 when testing the flow state as the test fluid is quenched by the cooling section 50 .

The inclined drive units 63 and 64 are installed to tilt the upward movement part 30 at a predetermined inclination angle to simulate the installed state of the riser in the actual submarine pipeline.

The inclined drive portions 63 and 64 are connected to a first inclination driver (not shown) that operates to pull or push the upward flow portion 30 so that the upward flow portion 30 can be inclined in the first direction (X axis direction) (Y-axis direction) orthogonal to the first direction and the upwardly-moving part (30) is moved in a second direction perpendicular to the first direction with respect to the vertical line by pulling or pushing the upwardly-moving part (30) And a second tilt driver 64a that operates to tilt.

The structure of the first inclination driver 63a and the inclination driver 64a is different from that of the first inclination driver 63a and the second inclination driver 64a.

The first inclination driver 63a is extended or contracted by a hydraulic or pneumatic cylinder, and the end of the cylinder rod of the hydraulic or pneumatic cylinder is pin-coupled with the upward flow section 30. [ The lower end of the main body of the hydraulic or pneumatic cylinder is pinned (63d) to the base member.

In addition, both ends of the length measuring device 63c are connected to the cylinder rod and the main body of the hydraulic or pneumatic cylinder to measure the extension and contraction lengths of the hydraulic or pneumatic cylinders, and the inclination angle of the upward- And can be calculated and controlled by the controller 63b.

The connection fluid flow portion 40 is connected to the upper end of the upward fluid flow portion 30 and is connected to the upward fluid flow portion 30 so as to allow the test fluid to flow.

The test fluid supplied from the test fluid supply unit 10 can be discharged to the external storage tank 84 through the connection fluid flow unit 40 and the connection fluid flow unit 40 can be discharged to the horizontal The circulation loop of the test fluid may be constituted by inclining the connection of the rear end of the flow portion 20 so that the test fluid flows out of the upward flow portion 30 and flows to the horizontal flow portion 20.

The connecting and moving part 40 is a part of the connecting and moving part 40 and is provided with a telescopic adjusting part 43 for adjusting the length of the connecting and moving part 40.

The stretchable and contractible portion 43 can adjust the length of the connecting fluid portion 40 so that the inclined driving portion can be smoothly tilted when the rising fluid portion 30 is inclined by the inclined driving portions 63 and 64.

The elastic expansion and contraction portion 43 is formed by connecting an elastic body made of elastic material bent in a zigzag shape in the middle of the tubular body forming the connection fluid portion 40, Pass the tube through.

The upper end of the ascent flow portion 30 pulls the connection flow portion 40 by the action of the inclined drive portions 63 and 64 because the elasticity adjusting portion 43 is formed by the elastic body of the elastic material bent in a zigzag shape The zigzag shape overcomes the elasticity and expands, thereby increasing the length of the connecting flow portion 40.

The elongation / contraction adjusting portion 43 is formed of a zigzag-shaped elastic material tube so that the elongation / contraction adjusting portion 43 forms a flow path of the test fluid passing through the connecting fluid portion 40, In order to eliminate or minimize the occurrence of the flow resistance, the tube of the expansion and contraction adjusting portion 43 is configured to gradually increase the inner diameter through which the test fluid passes as it goes to the downstream side of the connection fluid flow portion 40.

The cooling unit 50 further includes a cooling unit 50 installed on the upwardly moving part 30 to cool the test fluid rising along the upwardly rising part 30 on the upper side of the observation parts 31 and 35.

The cooling section 50 rises along the rising fluid 30 to quench the test fluid. The cooling section 50 simulates a configuration in which the crude oil rises from the oil well under the seabed and meets with seawater on the seabed surface and rapidly cools. Since the seawater on the seabed surface has a considerably lower value than the temperature of the underground or the sea surface, the cooling section 50 is constructed such that the refrigerant pipe 51 through which the refrigerant of 3 to 4 ° C or lower flows, Coiled to form heat exchange with the test fluid.

Before the test fluid enters the cooling section 50, the test fluid is adjusted to the temperature in the subsea well by the third temperature adjustment jacket 33 and then enters the cooling section 50, Test the change.

The seabed wells described in the specification and claims of the present invention are meant to include not only petroleum wells but also gas wells and the test fluid may employ not only crude oil but also fluids of the same or similar nature as the gas flowing in the pipeline.

Hereinafter, the operation according to the embodiment of the present invention will be described with reference to Figs. 5 and 6. Fig.

The test fluid is introduced into the horizontal flow portion 20 from the cylinder 13 of the test fluid supply portion 10 by the operation of the opening / closing valve.

The pressure regulator 24 of the horizontal flow section 20 regulates the pressure of the test fluid flowing out of the horizontal flow section 20 and its pressure and temperature are measured by the pressure sensor 25 and the temperature sensor 26 So that the set pressure is maintained. When the temperature is not within the setting range, the temperature is adjusted by the first temperature adjusting jacket 22 to the set range.

The flow state of the test fluid in the horizontal flow section 20 and the upward flow section 30 can acquire the flowing image thereof by the view cell 38.

A flow state is observed by the observation portions 21 and 31 at a portion where the horizontal flow portion 20 and the upward flow portion 30 meet and a sudden change in the flow direction occurs.

Since the observation section is provided with the first observation window 21 and the second observation window 31 at the distal end portion of the horizontal flow section 20 and at the lower end section of the upward flow section 30, The flow state of the test fluid flowing out and the flow state of the test fluid which starts to rise after entering the upward flow portion 30 after the flow change at the corner portion can be compared and observed.

These observations are either recorded or recorded by a separate imaging device, so that the data can be stored and used as a reference material for future pipeline design.

The rising motion part 30 corresponding to the riser simulates various installation states by the inclined drive parts 63,

A change in the flow state is detected through the first observation window 21 and the second observation window 31 in a state in which the first tilter driver 63a and the second tilter driver 64a are adjusted at various set inclination directions and inclination angles .

The elongating and contracting portion 43 is changed when the upward movement portion 30 is inclined by the operation of the first inclination driver 63a and the second inclination driver 64a so that the connection flow portion 40 maintains a stable connection state And the inclined movement of the ascending / descending part (30) can be performed smoothly.

The expansion and contraction portion 43 may be formed of an elastic material tube having a zigzag shape and curved to prevent the flow of the test fluid passing through the connection fluid portion 40. However, So that the flow resistance of the test fluid is eliminated or minimized in the elongating / contracting regulating portion 43.

Accordingly, the problem of influencing the test fluid flowing upward in the upward flow portion 30 due to the flow resistance due to the bent shape of the elongation / contraction regulating portion 43 is solved or minimized.

On the other hand, the test fluid ascending through the upward flow portion 30 is adjusted to the temperature in the subsea well by the third temperature adjustment jacket 33, then enters the cooling portion 50, The test fluid is rapidly cooled by the cooling section 50 provided at the upper end. This is a structure that simulates the environment in which the crude oil rises from the wells in the sea floor and cools rapidly and cools the seawater in the seabed so that the rapidly cooled test fluid undergoes a phase change such that the hydrocarbon component with high molecular weight condenses and falls.

The cooling section (50) is configured to cool the test fluid by winding the tube of the refrigerant tube (51) around the tube constituting the upward flow section (30) in a coil shape. During the cooling of the test fluid, the hydrocarbon component having a high molecular weight is condensed and accumulated on the inner wall of the upward flow section (30), and the flow of the test fluid may be disturbed by such condensed hydrocarbons.

The flow state of the test fluid quenched by the cooling section 50 can be observed by a separate observation window 35 provided below the cooling section 50. The observation window 35 is provided with an imaging device Images can be acquired.

Therefore, the fluid flow simulation apparatus of the subsea oil refining pipeline according to the embodiment of the present invention uses a single flow simulation apparatus to test the flow state of the crude oil (gas) starting to rise through the riser in the submarine oil pipeline In addition to accumulating information, test data on the flow state of crude oil (gas) rising from the underground oil field to the seafloor under seawater and quenching can also be accumulated at the same time.

The fluid flow simulation apparatus of the subsea oil pipeline according to the embodiment of the present invention can perform such tests at the same time, and each of the tests may be performed separately.

The test fluid that has passed through the cooling section 50 and descends through the connecting fluid section 40 is temporarily stored in the reservoir 81. The test fluid is temporarily stored in the horizontal fluid section 20 Circulating flow that flows back into the upward flow section (30), or is discharged to a separate storage tank (84).

Meanwhile, FIG. 7 shows a configuration according to another embodiment of the present invention.

7, the cooling section 50 is provided with a refrigerant pipe 54 in the form of a coil on the inner circumferential surface of the cylindrical case 53, and a coil inner diameter of the refrigerant pipe 54 is larger than the inner diameter of the pipe 39). The refrigerant pipe (54) has a coil shape in which the upper and lower refrigerant pipes (54) adjacent to each other are in close contact with each other in the wound state.

As a result, the test fluid flowing through the tube of the upward flow portion 30 and passing through the cooling portion 50 comes into direct contact with the refrigerant tube 54, so that the coil shape becomes the same as the tubular body 39 of the upward flow portion 30 Let's play the role of the body. Accordingly, since the refrigerant tube 54 and the test fluid are in direct contact with each other, heat exchange efficiency can be increased, and the flow cross-sectional area near the refrigerant coil is hardly changed, so that turbulence and the like can be minimized and the flow resistance of the test fluid can be minimized.

7, a low pressure generation preventing portion 90 is provided at the upper end of the connecting fluid flow portion 40 connected to the upward fluid flow portion 30. As shown in FIG.

The low pressure generation preventing portion 90 is provided to prevent the low fluidity of the test fluid when the test fluid is sucked downward by gravity and the low fluidity condition occurs at the upper end of the fluid flow portion 30, .

The low pressure generation preventing portion 90 is provided at the upper end of the connection fluid flow portion 40 and an adjustment space 91 provided at the upper portion of the adjustment fluid flow space 91. When the pressure is lower than the set pressure, An air intake valve 92 is provided.

The generation of the negative pressure at the upper side of the rising fluid 30 is caused by the installation of the connecting fluid section 40 which does not exist in the actual submarine pipeline, The pressure environment can be simulated to be similar to the actual.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the particular embodiments set forth herein. It goes without saying that other modified embodiments are possible.

10; A test fluid supply unit 13; bomb
14; An opening / closing valve 15; Supply line
20; Horizontal flow sections 21, 31, 35; Observation section
22; A first temperature control jacket 24; Pressure regulator
25; Pressure sensor 26; temperature Senser
30; A rising flow portion 32; Second temperature control jacket
35; A third observation window 38; ViewSel
40; A connection flow section 43; Stretching and regulating portion
50; A cooling section 51; Refrigerant tube
53; Cylindrical case 54; Refrigerant tube
61; An inclined shaft portion 61a; ball
61b; Sockets 63, 64; Inclined-
63a, 64a; First inclination drivers 63b and 64b; Inclination controller
63c, 64c; Length measuring devices 63d and 64d; Pin coupling
64a; A second warp driver 90; The low-
91; An adjustment space 92; Air intake valve

Claims (9)

A test fluid supply part 10 for supplying a test fluid,
A horizontal flow portion 20 supplied with the test fluid from the test fluid supply portion 10 to form a horizontal flow path,
An upward flow portion 30 connected to the distal end of the horizontal flow portion 20 to form a flow path in which the test material ascends,
A connection fluid flow portion 40 connected to an upper end of the upward fluid flow portion 30 to flow the test fluid from the upward fluid flow portion 30,
Observation portions (21, 31, 35) installed in the horizontal flow portion (20) and the upward flow portion (30)
A tilted shaft portion 61 provided at the lower end of the upwardly-moving part 30 so that the posture of the upwardly-moving part 30 can be inclined with respect to the horizontal part,
And inclined driving portions (63, 64) coupled to the upward flow portion (30) and inclining the upward flow portion (30) to a predetermined angle with respect to a vertical line about the inclined axis portion (61) Fluid flow simulator of subsea oil pipeline The method according to claim 1,
Further comprising a cooling unit (50) installed on the upwardly rising part (30) above the observation part and cooling the test fluid rising along the upwardly rising part (30) Fluid flow simulator The method according to claim 1,
The connecting fluid flow portion 40 is inclined to connect the upper end of the upward fluid flow portion 30 and the rear fluid flow portion 20 so that the test fluid flows out of the upward fluid flow portion 30, ), ≪ / RTI >
Further comprising an elongation / contraction regulating portion (43) which is bent so as to constitute a part of the connection lubrication portion (40) so as to be able to adjust the length of the connection lubrication portion (40) Fluid flow simulator The method according to claim 1,
The inclined driving portions 63,
A first inclination driver 63a which operates to pull or push the ascending / descending part 30 so that the ascending / descending part 30 can be tilted in a first direction with respect to a vertical line,
(30) is tilted in a second direction perpendicular to the first direction with respect to a vertical line by pulling or pushing the upwardly upward flow portion (30) in a second direction perpendicular to the first direction Further comprising a second tilt driver (64a). ≪ RTI ID = 0.0 > The method of claim 3,
The expansion / contraction adjusting portion 43 is formed of an elastic material tube having a zigzag shape so that the elasticity adjusting portion 43 forms a flow path of the test fluid passing through the connection fluid portion 40,
Characterized in that the tube is configured such that the inner diameter through which the test fluid passes as it goes to the downstream side of the connecting fluid flow section (40) gradually increases. 3. The method of claim 2,
The cooling unit 50 includes a cylindrical case 53 and a refrigerant pipe 54 provided on an inner peripheral surface of the cylindrical case 53,
The refrigerant pipe (54) forms a coil shape in which the upper and lower refrigerant pipes (54) adjacent to each other are in close contact with each other,
The inner diameter of the coil shape is the same as the inner diameter of the tube body 39 of the upward flow portion 30 so that the test fluid directly contacts the refrigerant tube 54 and the coil shape serves as a tube body through which the test fluid passes And the fluid flow simulation device 7. The method according to any one of claims 1 to 6,
A low pressure generation preventing portion (90) is provided at an upper end portion of the connection flow portion (40)
The low-pressure generation preventing portion (90) is provided with an air intake valve (92) capable of sucking air when the pressure is lower than a set pressure, thereby relieving a low pressure state generated in the flow path of the test fluid Fluid flow simulator for oil-only pipeline 7. The method according to any one of claims 1 to 6,
The observation section is an observation window capable of visual observation,
The observation window
A first observation window 21 provided at the distal end of the horizontal flow section 20,
And a second observation window 31 provided at the lower end of the upward flow portion 30,
Wherein a change in a flow state of the test fluid can be observed at a corner portion where the horizontal flow portion (20) and the upward flow portion (30) meet, 9. The method of claim 8,
A first temperature adjusting jacket 22 for adjusting the temperature of the test fluid is provided in the horizontal flow section 20 behind the first observation window 21,
And a second temperature control jacket 32 for controlling the temperature of the test fluid above the second observation window 31,
The first temperature control jacket 22 and the second temperature control jacket 32 are configured to allow refrigerant of the same temperature to flow therethrough,
A third temperature adjusting jacket 33 for adjusting the temperature of the test fluid entering the cooling unit 50 is further provided on the upward flow portion 30 of the second temperature adjusting jacket 32,
Characterized in that the temperature of the test fluid before entering the cooling section (50) can be controlled by the temperature of the third temperature control jacket (33) to the temperature of the subsea well.

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