WO2019047871A1

WO2019047871A1 - Fluid separation device, well structure, and oil or gas production method

Info

Publication number: WO2019047871A1
Application number: PCT/CN2018/104240
Authority: WO
Inventors: 周侗侗; 唐勇; 张罡; 李军民; 张忠林; 刘树飞; 苏诗策; 易诚雄; 周华; 谭宇茜; 唐湉; 刘向美珂; 刘瀚森; 陈俊宏; 刘士吉
Original assignee: 刘书豪
Priority date: 2017-09-06
Filing date: 2018-09-05
Publication date: 2019-03-14
Also published as: CN107339080A; CN107339080B

Abstract

A fluid separation device, well structure, and oil or gas production method. During operation, when a fluid separation device (010) moves up to an upper end of a well (201), a core tube (400) impacts an upper impact device (202), such that the core tube (400) moves from a closed position to an open position. At the same time, a control device (600) drives a valve plate (500) to rotate forward by a first predetermined angle to increase a flow area of a fluid passageway (401). Oil or gas below the fluid separation device (010) can pass through the fluid passageway (401) to above the fluid separation device (010), thus reducing a force-receiving area of the fluid separation device (010), so as to enable the fluid separation device (010) to quickly descend to the well bottom without shut-in of the well.

Description

Fluid separation device, well structure and production method of oil or natural gas

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. ZL201710794277X, entitled "Fluid Separating Device, Well Structure and Oil or Natural Gas Production Method", filed on September 6, 2017, the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

The invention relates to the technical field of oil or natural gas exploitation, in particular to a fluid separation device, a well structure and a production method of oil or natural gas.

Background technique

In the development of oil or gas wells, when the oil or natural gas production in the well is low, oil or natural gas cannot lift a large amount of liquid to the ground, which will form a certain level of liquid at the bottom of the well, thereby reducing the production capacity of oil or gas wells. It even caused oil or gas wells to stop spraying.

A fluid separation device is provided in a related art known to the inventors. A plurality of partition members are disposed around the periphery of the fluid partitioning device, and the partition members are always in contact with the inner wall of the hoistway under the action of the elastic member to form a seal. The pressure generated by the fluid beneath the fluid separation device causes the fluid separation device to ascend and discharge the fluid above the fluid separation device as the fluid separation device ascends to the wellhead. A problem with such a fluid separation device is that when the downflow is required, the fluid separation device cannot fall back to the bottom of the well due to the effect of the fluid resistance below, or the downstream speed is slow. In order to return the fluid separation device to the bottom of the well, the well can only be shut off to balance the pressure above and below the fluid separation device to enable the fluid separation device to descend. But this has greatly affected the efficiency of oil or gas extraction.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the deficiencies of the prior art and to provide a fluid separation device that can quickly descend to the bottom of a well without shutting down the well, greatly improving the efficiency of oil or natural gas production.

Another object of the present invention is to provide a hoistway structure including the above-described fluid separation device.

A third object of the present invention is to provide a method for producing oil or natural gas based on the above-described hoistway structure.

Embodiments of the present invention are implemented by the following technical solutions:

a fluid separation device comprising: a barrel; a plurality of partitions disposed around the axis of the barrel; a first elastic member coupled to the partition and configured to apply an elastic force to the partition radially outward along the barrel; The body is slidably fitted and configured as a core tube moving back and forth between the open position and the closed position along the axial direction of the barrel; the ends of the core tube are open, and a fluid passage is formed in the core tube; rotatably disposed in the fluid passage a valve plate; a control device located in the fluid passage; wherein the control device drives the valve plate to rotate the first predetermined angle and increase the flow area of the fluid passage during the movement of the core tube from the closed position to the open position; During the movement of the open position to the closed position, the control device drives the valve plate to rotate in the second predetermined angle and reduce the flow area of the fluid passage.

Further, the valve plate is rotatably connected to the core tube through the rotating shaft; the core tube is provided with a first elongated hole extending along the axial direction thereof; the control device comprises a connecting rod; one end of the connecting rod is rotatably connected with the valve plate; The other end of the connecting rod extends through the first elongated hole and is rotatably coupled to the barrel.

Further, the core tube is provided with a first elongated hole extending along the axial direction thereof; the valve plate is rotatably connected to the cylindrical body through a rotating shaft penetrating the first elongated hole; the control device includes a connecting rod; The valve plate is rotatably coupled; the other end of the connecting rod is rotatably coupled to the core tube.

Further, the core tube is provided with a first elongated hole extending along the axial direction thereof; the valve plate is rotatably connected to the cylindrical body through a rotating shaft penetrating the first elongated hole; the opposite plate surfaces of the valve plate are respectively disposed a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are located on both sides of the rotating shaft; the control device comprises a first convex body and a second convex body disposed on the inner wall of the core tube; and the process of moving the core tube from the closed position to the open position First, the second inclined surface is separated from the second convex body, and then the first convex body is in contact with the plate surface of the valve plate, and drives the valve plate to rotate forwardly by a first predetermined angle; during the movement of the core tube from the closed position to the open position First, the first convex body is in contact with the first inclined surface and drives the valve plate to rotate in the reverse direction by a third predetermined angle, and then the second convex body contacts the second inclined surface and continues to drive the valve plate to rotate in the reverse direction by a fourth predetermined angle; The sum of the preset angle and the fourth preset angle is equal to the second preset angle.

Further, the valve plate is rotatably connected to the core tube through the rotating shaft; the opposite two plate faces of the valve plate are respectively provided with a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are located on both sides of the rotating shaft; a first elongated hole extending along the axial direction thereof; the control device includes a first protrusion and a second protrusion respectively penetrating the first elongated hole and connected to the barrel; and the process of moving the core tube from the closed position to the open position First, the second inclined surface is separated from the second convex body, and then the first convex body is in contact with the plate surface of the valve plate, and drives the valve plate to rotate forwardly by a first predetermined angle; during the movement of the core tube from the closed position to the open position First, the first convex body is in contact with the first inclined surface and drives the valve plate to rotate in the reverse direction by a third predetermined angle, and then the second convex body contacts the second inclined surface and continues to drive the valve plate to rotate in the reverse direction by a fourth predetermined angle; The sum of the preset angle and the fourth preset angle is equal to the second preset angle.

Further, the core tube is provided with a first elongated hole extending along the axial direction thereof; the valve plate is rotatably connected to the cylindrical body through a rotating shaft penetrating the first elongated hole; and a plate surface of the valve plate is oppositely disposed a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are located on both sides of the rotating shaft; the control device comprises a first convex body, a second convex body and a third convex body disposed on the inner wall of the core tube; the core tube moves from the closed position In the process of the open position, first, the valve plate is disengaged from the third convex body, and then the first convex body is in contact with the first inclined surface, and the valve plate is rotated forward by a first predetermined angle; the core tube is moved from the open position to the closed position. In the process, first, the second convex body is in contact with the second inclined surface, and drives the valve plate to rotate in the reverse direction by a third predetermined angle; then the third convex body is in contact with the other surface of the valve plate, and continues to drive the valve plate to rotate in the opposite direction. a fourth preset angle; a sum of the third preset angle and the fourth preset angle is equal to the second preset angle.

Further, the valve plate is rotatably connected to the core tube through the rotating shaft; a plate surface of the valve plate is provided with an opposite first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are located on both sides of the rotating shaft; a first elongated hole extending along the axial direction thereof; the control device includes a first protrusion, a second protrusion and a third protrusion respectively penetrating the first elongated hole and connected to the barrel; the core tube moves from the closed position In the process of the open position, first, the valve plate is disengaged from the third convex body, and then the first convex body is in contact with the first inclined surface, and the valve plate is rotated forward by a first predetermined angle; the core tube is moved from the open position to the closed position. In the process, first, the second convex body is in contact with the second inclined surface, and drives the valve plate to rotate in the reverse direction by a third predetermined angle; then the third convex body is in contact with the other surface of the valve plate, and continues to drive the valve plate to rotate in the opposite direction. a fourth preset angle; a sum of the third preset angle and the fourth preset angle is equal to the second preset angle.

Further, the core tube is provided with a first elongated hole extending along the axial direction thereof; the valve plate is rotatably connected to the cylindrical body through a rotating shaft penetrating the first elongated hole; the control device comprises a first spring; the first spring One end is rotatably coupled to the valve plate; the other end of the first spring is rotatably coupled to the core tube.

Further, the fluid separation device further includes a mandrel; the mandrel is connected to the core tube and extends along the axial direction of the barrel; the through hole is opened in the barrel; the partition member is slidably engaged with the through hole; and one end of the first elastic member is The partition member is rotatably coupled; the other end of the first elastic member is rotatably engaged with the mandrel; when the core tube is in the closed position, the first elastic member is compressed and drives the partition member to move radially outward; when the core tube When in the open position, the first resilient member is stretched and causes the divider to move radially inward.

Further, the partition member includes an arc-shaped partitioning piece and a connecting piece attached to the curved surface of the partitioning piece; the first elastic member is rotatably coupled to the connecting piece.

Further, a positioning ring is disposed in the cylinder; the positioning ring is provided with a first clamping portion; one end of the core tube is provided with a second clamping portion for detachably engaging with the first engaging portion; when the core tube is located When the position is opened, the first engaging portion is engaged with the second engaging portion.

Further, the core tube is provided with a first positioning space and a second positioning space, and the cylinder body is connected with the positioning block through the elastic returning member; or the first positioning space and the second positioning space are disposed on the cylinder body, and the core tube is elastically reset The piece is connected with a positioning block; when the core tube is in the open position, the positioning block is embedded in the first positioning space by the elastic returning member; when the core tube is in the closed position, the positioning block is embedded in the second by the elastic resetting member Positioning space.

Further, the fluid separation device further includes a guiding device that penetrates the cylinder and has one end connected to the partitioning member and the other end and the core tube slidably engaged by the mating surface; wherein the mating surface is in a direction from the closed position to the open position relative to The tubular body gradually extends radially outward; when the core tube moves to the open position, the guiding device drives the partition member to move radially inward relative to the cylindrical body; when the core tube moves to the closed position, the first elastic member drives the partition member relative to The cylinder moves radially outward.

A hoistway structure includes a hoistway, an upper impact device and a lower impact device respectively disposed at upper and lower ends of the hoistway, and any one of the above fluid separation devices; the fluid separation device is disposed in the hoistway and configured to slide axially along the hoistway; When the core tube collides with the upper impact device, the core tube moves to the open position, and when the core tube collides with the lower impact device, the core tube moves to the closed position.

A method of producing petroleum or natural gas is carried out based on the above-described hoistway structure, the production method comprising: opening the outlet of the hoistway when the fluid separation device descends.

The technical solution of the present invention has at least the following advantages and beneficial effects:

The fluid separation device and the hoistway structure provided by the embodiments of the present invention, when the fluid separation device is ascended to the upper end of the hoistway, the core tube collides with the upper impact device, so that the core tube moves from the closed position to the open position, and the control device drives the valve plate. The first predetermined angle is rotated in the forward direction and the flow area of the fluid passage is increased. In this way, the fluid under the fluid separation device can flow over the fluid separation device through the fluid passage, reducing the force receiving area of the fluid separation device, so that the fluid separation device can quickly descend to the bottom of the well without shutting the well. Increased oil or gas production efficiency.

The oil or natural gas production method provided by the embodiment of the invention opens the outlet of the hoistway when the fluid separation device descends, so that when the fluid separation device descends, oil or natural gas can still be ejected from the hoistway, realizing oil or natural gas. Continuous production greatly improves production efficiency.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings for the embodiments need to be briefly introduced. It is understood that the following drawings are merely illustrative of certain embodiments of the invention and are not intended to Other drawings can be obtained from those skilled in the art without departing from the drawings.

1a-1c are process diagrams of the fluid separation device of Embodiment 1 transitioning from an open state to a closed state;

1d-1f are process diagrams of the fluid separation device provided in Embodiment 1 transitioning from a closed state to an open state;

Figure 2 is an enlarged view of the portion C of Figure 1a;

Figure 3a is a view showing an operation state of the hoistway structure provided in Embodiment 1;

Figure 3b is another working state diagram of the hoistway structure provided in Embodiment 1;

4a-4c are partial structural schematic views of the fluid separation device provided in Embodiment 2 from an open state to a closed state;

4d-4f are partial structural schematic views of the fluid separation device provided in Embodiment 2 from a closed state to an open state;

5a-5c are partial structural schematic views of the fluid separation device provided in Embodiment 3 from an open state to a closed state;

5d-5f are partial structural schematic views of the fluid separation device provided in Embodiment 3 from a closed state to an open state;

Figure 6a is a schematic view showing the structure of the fluid separation device provided in Embodiment 4 in an open state;

Figure 6b is a schematic view showing the structure of the fluid separation device provided in Embodiment 4 in a closed state;

Figure 7a is a view showing an operation state of the hoistway structure provided in Embodiment 4;

Figure 7b is another working state diagram of the hoistway structure provided in Embodiment 4;

Figure 8 is a schematic structural view of a partition member in Embodiment 4;

FIG. 9 is a schematic structural view of the positioning ring being engaged with the core tube in Embodiment 4. FIG.

In the figure: 010-fluid separating device; 100-barrel; 110-through hole; 120-positioning ring; 121-first snap portion; 200-partition; 210-partition; 220-joint; 300- An elastic member; 400-core tube; 401-fluid channel; 410-first elongated hole; 420-second engaging portion; 430-second elongated hole; 500-valve plate; 510-spindle; 520- a bevel; 530-second bevel; 600-control device; 610-link; 620-first protrusion; 621-first contact surface; 622-second contact surface; 630-second convex body; 640- Three convex body; 650-first spring; 651-first stage; 652-second stage; 653-third stage; 700-mandrel; 810-first positioning space; 820-second positioning space; 830-elastic Reset member; 840-positioning block; 850-mating surface; 900-guide device; 910-connection segment; 920-guide segment; 020-well structure; 201-well; 202-upper impact device;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is apparent that the described embodiments are part of the embodiments of the invention, and not all of the embodiments.

Therefore, the following detailed description of the embodiments of the invention is not intended to All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that the features and technical solutions in the embodiments and the embodiments of the present invention may be combined with each other without conflict.

It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once an item is defined in one figure, it is not necessary to further define and explain it in the subsequent figures.

In the description of the present invention, it is to be noted that the orientation or positional relationship of the terms "upper", "lower" and the like is based on the orientation or positional relationship shown in the drawings, or is conventionally placed when the invention product is used. Orientation or positional relationship, or a position or positional relationship that is conventionally understood by those skilled in the art, such terms are merely for the purpose of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to has a particular orientation, The construction and operation in a particular orientation are not to be construed as limiting the invention.

The terms "first", "second", etc. are used only to distinguish a description, and are not to be construed as indicating or implying a relative importance.

Example 1:

Please refer to FIG. 1a - FIG. 1f and FIG. 1a-1c is a process diagram of the fluid separation device 010 according to the embodiment, which is switched from an open state to a closed state; FIG. 1d-FIG. 1f is a fluid separation device 010 provided in the embodiment, which is switched from a closed state to an open state. Process diagram; Figure 2 is an enlarged view of the portion C of Figure 1a.

In the present embodiment, the fluid separation device 010 includes a cylinder 100, a partition 200, a first elastic member 300, a core tube 400, a valve plate 500, and a control device 600. A plurality of partitions 200 are disposed around the axis of the cylinder 100. The partition 200 is located outside the cylinder 100. The first elastic member 300 is disposed between the partition 200 and the cylinder 100. In the radial direction of the cylinder 100, the first elastic member 300 applies a radially outward elastic force to the partition 200 such that the partition 200 is movable radially outward relative to the cylinder 100. The core tube 400 is open at both ends, and a fluid passage 401 is formed in the core tube 400. The core tube 400 extends through the barrel 100 in the axial direction of the barrel 100, and the core tube 400 is slidably fitted with the barrel 100 to be axially in the open position (the position shown in Figs. 1a and 1f) and along the cylinder 100. The closed position (the position shown in Figures 1c and 1d) moves back and forth. The valve plate 500 is rotatably disposed within the fluid passage 401. Control device 600 is located within fluid passage 401. During the movement of the core tube 400 from the open position to the closed position (Fig. 1a - Fig. 1c), the control device 600 drives the valve plate 500 to reverse (the A direction in Figs. 1a - 1c) to rotate the second predetermined angle and reduce The flow area of the fluid passage 401. During the movement of the core tube 400 from the closed position to the open position (Fig. 1d - Fig. 1f), the control device 600 drives the valve plate 500 to rotate forward (the B direction in Figs. 1d - 1f) by a first predetermined angle and increase The flow area of the fluid passage 401.

Specifically, in the present embodiment, the valve plate 500 is rotatably coupled to the core tube 400 through the rotating shaft 510. The core tube 400 is provided with a first elongated hole 410 extending in the axial direction thereof. The control device 600 includes a link 610; one end of the link 610 is rotatably coupled to the valve plate 500; the other end of the link 610 extends through the first elongated hole 410 and is rotatably coupled to the barrel 100. It should be noted that, in other embodiments, the valve plate 500 may be rotatably connected to the cylinder 100 through the rotating shaft 510 penetrating the first elongated hole 410; one end of the connecting rod 610 is rotatably connected to the valve plate 500. The other end of the link 610 is rotatably coupled to the core tube 400.

1a-1c, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is located at a lowermost position (open position) with respect to the cylinder 100, at which time the valve plate 500 is parallel to the axis of the core tube 400. The fluid passage 401 has the largest flow area, and the fluid separation device 010 has the smallest force area. When the core tube 400 is subjected to an upward force, the core tube 400 moves upward relative to the barrel 100, and the link 610 pushes the valve plate 500 to rotate in the reverse direction. During the rotation, the valve plate 500 gradually reduces the flow area of the fluid passage 401. When the core tube 400 is moved to the uppermost position relative to the barrel 100 (closed position), the valve plate 500 is perpendicular to the axis of the core tube 400, and the valve plate 500 completely closes the fluid passage 401, and the force receiving area of the fluid partitioning device 010 At the maximum, the fluid separation device 010 is in a closed state.

1d - 1f, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is at an uppermost position (closed position) with respect to the cylinder 100, at which time the valve plate 500 is perpendicular to the axis of the core tube 400. The fluid passage 401 is completely closed, and the fluid separation device 010 has the largest force receiving area. When the core tube 400 is subjected to a downward force, the core tube 400 moves downward relative to the barrel 100, and the link 610 pushes the valve plate 500 to rotate in the forward direction. During the rotation, the valve plate 500 gradually increases the circulation of the fluid passage 401. area. When the core tube 400 is moved to the lowest position relative to the cylinder 100 (open position), the valve plate 500 is parallel to the axis of the core tube 400, the flow passage area of the fluid passage 401 is the largest, and the force receiving area of the fluid separation device 010 is the smallest. The fluid separation device 010 is in an open state.

Referring to Figures 3a and 3b, the embodiment further provides a hoistway structure 020. The hoistway structure 020 includes a hoistway 201, an upper impingement device 202 and a lower impingement device 203 disposed at upper and lower ends of the hoistway 201, respectively, and a fluid separation device 010 provided in the present embodiment. The fluid separation device 010 is disposed within the hoistway 201 and is axially slidable along the hoistway 201. 3a is a schematic view showing the movement of the fluid separation device 010 to the lower end of the hoistway 201 and the core tube 400 colliding with the lower impact device 203. At this time, the core tube 400 is in the closed position, and the fluid separation device 010 is in the closed state. Figure 3b is a schematic view of the fluid separation device 010 moving to the upper end of the hoistway 201 and the core tube 400 colliding with the upper impact device 202. At this time, the core tube 400 is in the open position and the fluid separation device 010 is in the open state.

Please refer to FIG. 1a - FIG. 1c and FIG. 3a. When the fluid separation device 010 moves to the lower end of the hoistway 201, and the core tube 400 collides with the lower impact device 203, the core tube 400 moves upward relative to the barrel 100, and the link 610 pushes the valve plate 500 to rotate in the reverse direction during the rotation. The valve plate 500 gradually reduces the flow area of the fluid passage 401. When the core tube 400 is moved to the uppermost position relative to the barrel 100 (closed position), the valve plate 500 is perpendicular to the axis of the core tube 400, and the valve plate 500 completely closes the fluid passage 401, and the force receiving area of the fluid partitioning device 010 At the maximum, the fluid separation device 010 is in a closed state. At this time, the fluid below the fluid separation device 010 is difficult to flow above the fluid separation device 010, and the fluid pressure under the fluid separation device 010 acts completely on the fluid separation device 010, thereby driving the fluid separation device 010 upward. During the ascending process of the fluid separation device 010, the effusion above the fluid separation device 010 is lifted up and discharged through the wellhead. During this process, the first elastic member 300 brings the partition member 200 into contact with the inner wall of the hoistway 201, eliminating the gap between the fluid partitioning device 010 and the hoistway 201, further increasing the thrust received by the fluid separating device 010, and improving the fluid. The upstream speed of the partition 010.

Please refer to FIG. 1f - FIG. 1d and FIG. 3b. When the fluid separation device 010 moves to the upper end of the hoistway 201, and the core tube 400 collides with the upper impact device 202, the core tube 400 moves downward relative to the barrel 100, and the link 610 pushes the valve plate 500 to rotate in the forward direction during the rotation. The valve plate 500 gradually increases the flow area of the fluid passage 401. When the core tube 400 is moved to the lowest position relative to the cylinder 100 (open position), the valve plate 500 is parallel to the axis of the core tube 400, the flow passage area of the fluid passage 401 is the largest, and the force receiving area of the fluid separation device 010 is the smallest. The fluid separation device 010 is in an open state. At this time, the fluid below the fluid separation device 010 flows through the fluid passage 401 to above the fluid separation device 010. The fluid separation device 010 is basically only affected by the viscous resistance of the fluid and the thrust of the end face, and the fluid separation device 010 is weakly applied, so that the fluid separation device 010 can quickly descend to the bottom of the well without shutting the well, thereby greatly improving the oil or natural gas. Mining efficiency.

During the downward flow of the fluid separation device 010, if the partition 200 continues to contact the inner wall of the hoistway 201, the friction between the partition 200 and the inner wall of the hoistway 201 will slow down the downward velocity of the fluid separation device 010 and will cause the partition 200 Faster wear, resulting in less tight sealing of the fluid separation device 010, reducing the useful life of the fluid separator 010. In order to overcome this problem, in the present embodiment, the fluid separation device 010 further includes a guiding device that penetrates the cylinder 100 and has one end connected to the partition 200 and the other end and the core tube 400 slidably engaged by the mating surface 850. 900. Wherein the mating surface 850 extends radially outward relative to the barrel 100 in the direction from the closed position to the open position; the guide 900 drives the partition 200 radially inward relative to the barrel 100 as the core tube 400 moves toward the open position Movement; when the core tube 400 is moved to the closed position, the first elastic member 300 drives the spacer 200 to move radially outward relative to the barrel 100.

Specifically, in the embodiment, the core tube 400 is provided with a second elongated hole 430 extending in the axial direction thereof. The guiding device 900 includes a connecting portion 910 and a guiding portion 920; the connecting portion 910 is connected with the partition 200, the guiding portion 920 is connected with the connecting portion 910, and the guiding portion 920 passes through the second elongated hole 430 and enters the core tube 400; the mating surface The 850 is disposed on the guide section 920. The mating face 850 is slidably engaged with one end edge of the second elongated hole 430. When the core tube 400 is moved toward the open position, the guiding device 900 drives the spacer 200 to move radially inward relative to the barrel 100 under the action of the mating surface 850 on the guiding portion 920. When the core tube 400 moves toward the expanded position, the first elastic member 300 drives the partition member 200 to move radially outward relative to the barrel 100. Thus, when the core tube 400 is in the open position, the partition member 200 is disengaged from the inner wall of the hoistway 201, thereby forming an annular gap between the fluid separation device 010 and the hoistway 201. In this way, the friction between the partitioning member 200 and the inner wall of the hoistway 201 is eliminated, and the fluid below the fluid separating device 010 can flow upward through the annular gap, further reducing the downward resistance of the fluid separating device 010, making the partitioning member 200 less susceptible to wear. Increases the service life of the fluid separator 010.

Further, in order to stably raise the effluent during the ascending process of the fluid separation device 010, it is necessary to maintain the core tube 400 in the closed position during the ascending process. In order to enable the fluid separation device 010 to rapidly descend, the core tube 400 needs to be descended. Maintain the contracted position during the process. To this end, in the present embodiment, the lower end of the core tube 400 is provided with a first positioning space 810 and a second positioning space 820 which are arranged at intervals along the axial direction thereof, and the cylindrical body 100 is connected with the positioning block 840 through the elastic returning member 830. When the core tube 400 is in the open position, the positioning block 840 is embedded in the first positioning space 810 by the elastic return member 830 to maintain the core tube 400 in the open position. The positioning block 840 can be detached from the first positioning space 810 only when the core tube 400 is subjected to an upward impact force. In this way, it is ensured that the core tube 400 is always maintained in the open position during the down process. When the core tube 400 is in the closed position, the positioning block 840 is embedded in the second positioning space 820 by the elastic return member 830. The core tube 400 is maintained in the closed position. The positioning block 840 can be disengaged from the second positioning space 820 only when the core tube 400 is subjected to a downward impact force. In this way, it is ensured that the core tube 400 is always maintained in the closed position during the ascending process.

It can be understood that, in other embodiments, the first positioning space 810 and the second positioning space 820 may also be disposed on the cylinder 100, and the core tube 400 is connected to the positioning block 840 through the elastic returning member 830.

Example 2:

This embodiment provides a fluid separation device 010 and a hoistway structure 020. The fluid separation device 010 and the hoistway structure 020 provided in this embodiment are substantially the same as the embodiment 1, except that the valve plate 500 and the control device 600 are different. The present embodiment mainly describes the valve plate 500 and the control device 600. For the rest, reference may be made to the embodiment 1, and details are not described herein again.

Please refer to Figures 4a-4f. 4a-4c is a partial structural diagram of the fluid separation device 010 according to the embodiment, which is switched from the open state to the closed state; and FIG. 4d to FIG. 4f are the fluid separation device 010 provided in the embodiment, which is switched from the closed state to the open state. A schematic diagram of the local structure of the state.

In this embodiment, the core tube 400 is provided with a first elongated hole 410 extending along the axial direction thereof; the valve plate 500 is rotatably connected to the cylindrical body 100 through the rotating shaft 510 penetrating the first elongated hole 410; The two opposite plate faces are respectively provided with a first inclined surface 520 and a second inclined surface 530; the first inclined surface 520 and the second inclined surface 530 are located on both sides of the rotating shaft 510; and the control device 600 includes a first convex body disposed on the inner wall of the core tube 400. 620 and second protrusion 630. During the movement of the core tube 400 from the open position to the closed position, first, the first convex body 620 is in contact with the first inclined surface 520 and drives the valve plate 500 to reverse (the A direction in FIGS. 4a to 4c) to rotate the third predetermined angle. Then, the second protrusion 630 is in contact with the second slope 530 and continues to drive the valve plate 500 to rotate in the reverse direction by a fourth predetermined angle; the sum of the third preset angle and the fourth preset angle is equal to the second preset angle. During the movement of the core tube 400 from the closed position to the open position, first the second inclined surface 530 is disengaged from the second convex body 630, and then the first convex body 620 is in contact with the plate surface of the valve plate 500, and drives the valve plate 500 forward (Fig. 4d - B direction in Fig. 4f) rotates the first predetermined angle.

Specifically, in the embodiment, the first protrusion 620 has a circular first contact surface 621 and a second contact surface 622. The first contact area 621 is in contact with the plate surface of the valve plate 500, and the second contact surface 622 is in contact with the first inclined surface 520, so that the plate surface of the valve plate 500 and the first inclined surface 520 can be effectively prevented from being scratched, thereby improving the fluid separation device. 010 life. The second protrusion 630 has a cylindrical shape. When the second protrusion 630 is in contact with the second slope 530, the second slope 530 can be effectively prevented from being scratched, and the service life of the fluid partitioning device 010 is improved.

It should be noted that, in other embodiments, the valve plate 500 may be rotatably coupled to the core tube 400 through the rotating shaft 510, and the first protrusion 620 and the second protrusion 630 extend through the first elongated hole 410 and the barrel. 100 connections.

4a-4c, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is located at a lowermost position (open position) with respect to the cylinder 100, at which time the valve plate 500 is parallel to the axis of the core tube 400. The fluid passage 401 has the largest flow area, and the fluid separation device 010 has the smallest force area. When the core tube 400 is subjected to an upward force, the core tube 400 moves upward relative to the barrel 100. First, the first protrusion 620 is in contact with the first slope 520 and drives the valve plate 500 to rotate in a reverse direction by a third predetermined angle. Then, the second protrusion 630 contacts the second slope 530 and continues to drive the valve plate 500 to rotate in the reverse direction. Set the angle. The sum of the third preset angle and the fourth preset angle is equal to the second preset angle. The valve plate 500 gradually reduces the flow area of the fluid passage 401 during the rotation. When the core tube 400 is moved to the uppermost position relative to the barrel 100 (closed position), the outer circumference of the valve plate 500 is in contact with the inner peripheral surface of the core tube 400, and the valve plate 500 completely closes the fluid passage 401, the fluid partitioning device 010 The force receiving area is the largest and the fluid separation device 010 is in the closed state.

4d to 4f, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is located at an uppermost position (closed position) with respect to the cylinder 100, at which time the outer circumference of the valve plate 500 and the core tube 400 are inside. With the circumferential contact, the fluid passage 401 is completely closed, and the fluid separation device 010 has the largest force receiving area. When the core tube 400 is subjected to a downward force, the core tube 400 moves downward relative to the barrel 100. First, the second slope 530 is separated from the second protrusion 630, and then the first protrusion 620 is in contact with the plate surface of the valve plate 500. And driving the valve plate 500 to rotate the first predetermined angle in the forward direction. The valve plate 500 gradually increases the flow area of the fluid passage 401 during the rotation. When the core tube 400 is moved to the lowest position relative to the cylinder 100 (open position), the valve plate 500 is parallel to the axis of the core tube 400, the flow passage area of the fluid passage 401 is the largest, and the force receiving area of the fluid separation device 010 is the smallest. The fluid separation device 010 is in an open state.

Example 3:

Please refer to Figures 5a - 5f. 5a-5c is a partial structural diagram of the fluid separation device 010 according to the embodiment, which is switched from the open state to the closed state; and FIG. 5d-FIG. 5f is the fluid separation device 010 provided in the embodiment, which is switched from the closed state to the open state. A schematic diagram of the local structure of the state.

In this embodiment, the core tube 400 is provided with a first elongated hole 410 extending along the axial direction thereof; the valve plate 500 is rotatably connected to the cylindrical body 100 through the rotating shaft 510 penetrating the first elongated hole 410; A first inclined surface 520 and a second inclined surface 530 are disposed on one surface of the 500; the first inclined surface 520 and the second inclined surface 530 are located on both sides of the rotating shaft 510; and the control device 600 includes a first convex body disposed on the inner wall of the core tube 400. 620, second protrusion 630 and third protrusion 640. During the movement of the core tube 400 from the open position to the closed position, first, the second convex body 630 is in contact with the second inclined surface 530, and drives the valve plate 500 to reverse (the A direction in FIGS. 5a to 5c) to rotate the third preset. Angle; then the third protrusion 640 is in contact with the other surface of the valve plate 500, and continues to drive the valve plate 500 to rotate in the reverse direction by a fourth predetermined angle; the sum of the third predetermined angle and the fourth predetermined angle is equal to the second Preset angle. During the movement of the core tube 400 from the closed position to the open position, first, the valve plate 500 is disengaged from the third convex body 640, and then the first convex body 620 is in contact with the first inclined surface 520, and the valve plate 500 is driven forward (Fig. 5d- The B direction in 5f) is rotated by the first preset angle.

Specifically, in the embodiment, the first convex body 620, the second convex body 630, and the third convex body 640 are all cylindrical bodies, so that the first inclined surface 520, the second inclined surface 530, and the surface of the valve plate 500 can be effectively avoided. Being scratched increases the useful life of the fluid separator 010.

It should be noted that, in other embodiments, the valve plate 500 may be rotatably connected to the core tube 400 through the rotating shaft 510, and the first convex body 620, the second convex body 630, and the third convex body 640 penetrate the first length. The strip hole 410 is connected to the barrel 100.

5a to 5c, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is located at a lowermost position (open position) with respect to the cylinder 100, at which time the valve plate 500 is parallel to the axis of the core tube 400. The fluid passage 401 has the largest flow area, and the fluid separation device 010 has the smallest force area. When the core tube 400 is subjected to an upward force, the core tube 400 moves upward relative to the barrel 100. First, the second protrusion 630 is in contact with the second slope 530, and drives the valve plate 500 to rotate in a reverse direction by a third predetermined angle; then the third protrusion 640 is in contact with the other surface of the valve plate 500, and continues to drive the valve plate 500. The fourth preset angle is reversely rotated; the sum of the third preset angle and the fourth preset angle is equal to the second preset angle. The valve plate 500 gradually reduces the flow area of the fluid passage 401 during the rotation. When the core tube 400 is moved to the uppermost position relative to the barrel 100 (closed position), the plate surface of the valve plate 500 is perpendicular to the axis of the core tube 400, and the valve plate 500 completely closes the fluid passage 401, and the fluid separation device 010 is subjected to The force area is the largest and the fluid separation device 010 is in the closed state.

5d-5f, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is located at the uppermost position (closed position) with respect to the cylinder 100, at which time the outer circumference of the valve plate 500 and the core tube 400 are inside. With the circumferential contact, the fluid passage 401 is completely closed, and the fluid separation device 010 has the largest force receiving area. When the core tube 400 is subjected to a downward force, the core tube 400 moves downward relative to the barrel 100. First, the valve plate 500 is disengaged from the third protrusion 640, and then the first protrusion 620 is in contact with the first slope 520 and drives the valve. The board 500 is rotated forward by a first predetermined angle. The valve plate 500 gradually increases the flow area of the fluid passage 401 during the rotation. When the core tube 400 is moved to the lowermost position relative to the cylinder 100 (open position), the plate surface of the valve plate 500 is parallel to the axis of the core tube 400, the flow area of the fluid passage 401 is the largest, and the force of the fluid separation device 010 is applied. The area is the smallest and the fluid separation device 010 is in an open state.

Example 4:

Please refer to Figures 6a and 6b. FIG. 6 is a schematic structural view of the fluid separation device 010 according to the embodiment in an open state; FIG. 6b is a schematic structural view of the fluid separation device 010 according to the embodiment in a closed state.

In the present embodiment, the fluid separation device 010 includes a cylinder 100, a partition 200, a first elastic member 300, a core tube 400, a valve plate 500, and a control device 600. A plurality of partitions 200 are disposed around the axis of the cylinder 100. The partition 200 is located outside the cylinder 100. The first elastic member 300 is disposed between the partition 200 and the cylinder 100. In the radial direction of the cylinder 100, the first elastic member 300 applies a radially outward elastic force to the partition 200 such that the partition 200 is movable radially outward relative to the cylinder 100. The core tube 400 is open at both ends, and a fluid passage 401 is formed in the core tube 400. The core tube 400 extends through the barrel 100 in the axial direction of the barrel 100, and the core tube 400 is slidably fitted with the barrel 100 to be axially in the open position (the position shown in Fig. 6a) and the closed position (in the position shown in Fig. 6a). Moving back and forth between the positions shown in Figure 6b. The valve plate 500 is rotatably disposed within the fluid passage 401. Control device 600 is located within fluid passage 401. During the movement of the core tube 400 from the open position to the closed position, the control device 600 drives the valve plate 500 to rotate the second predetermined angle in the reverse direction and reduce the flow area of the fluid passage 401. During the movement of the core tube 400 from the closed position to the open position, the control device 600 drives the valve plate 500 to rotate a first predetermined angle and increase the flow area of the fluid passage 401.

Specifically, in the present embodiment, the core tube 400 is located at the upper end of the cylindrical body 100, and the outer peripheral surface of the core tube 400 is slidably fitted with the inner peripheral surface of the upper end of the cylindrical body 100. The fluid passage 401 communicates with the internal space of the cylinder 100, and the fluid can flow upward through the internal space of the cylinder 100 and the fluid passage 401. The core tube 400 is provided with a first elongated hole 410 extending along the axial direction thereof; the valve plate 500 is rotatably connected to the cylindrical body 100 through a rotating shaft 510 penetrating the first elongated hole 410; the control device 600 includes a first spring 650 One end of the first spring 650 is rotatably coupled to the valve plate 500; the other end of the first spring 650 is rotatably coupled to the core tube 400.

The first spring 650 is of a "Z" shape. The first spring 650 is formed by bending a wire, and includes a first segment 651, a second segment 652, and a third segment 653 that are sequentially connected. The connection position between the first segment 651 and the second segment 652 is curved, and the connection position between the second segment 652 and the third segment 653 is also curved. The first end 651 is rotatably coupled to the valve plate 500 and the third section 653 is rotatably coupled to the core tube 400.

In the process of transitioning the fluid separation device 010 from the open state to the closed state, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is located at a lowermost position (open position) with respect to the cylinder 100, at which time the valve The plate 500 is parallel to the axis of the core tube 400, the flow area of the fluid passage 401 is the largest, and the force receiving area of the fluid partitioning device 010 is the smallest. When the core tube 400 is subjected to an upward force, the core tube 400 moves upward relative to the barrel 100, and the first spring 650 pushes the valve plate 500 to rotate in the opposite direction (direction A in FIGS. 6a and 6b), during the rotation, the valve The plate 500 gradually reduces the flow area of the fluid passage 401. When the core tube 400 is moved to the uppermost position relative to the barrel 100 (closed position), the valve plate 500 is perpendicular to the axis of the core tube 400, and the valve plate 500 completely closes the fluid passage 401, and the force receiving area of the fluid partitioning device 010 At the maximum, the fluid separation device 010 is in a closed state. During rotation of the valve plate 500, the first spring 650 is compressed, and when the valve plate 500 is perpendicular to the axis of the core tube 400, the first spring 650 is still compressed, and the valve plate 500 is radially biased along the cylinder 100. The force enables the valve plate 500 to be maintained in a state perpendicular to the axis of the core tube 400. As such, the valve plate 500 is less prone to rotation under fluid impact, ensuring that fluid does not readily pass through the fluid passage 401.

In the process in which the fluid separation device 010 is switched from the closed state to the open state, in the initial state, the fluid separation device 010 is in an open state, and the core tube 400 is located at the uppermost position (closed position) with respect to the cylinder 100, at which time the valve The plate 500 is perpendicular to the axis of the core tube 400, the fluid passage 401 is completely closed, and the fluid separation device 010 has the largest force receiving area. When the core tube 400 is subjected to a downward force, the core tube 400 moves downward relative to the barrel 100, and the first spring 650 pushes the valve plate 500 to rotate in the forward direction (the B direction in FIGS. 6a and 6b) during the rotation. The valve plate 500 gradually increases the flow area of the fluid passage 401. When the core tube 400 is moved to the lowest position relative to the cylinder 100 (open position), the valve plate 500 is parallel to the axis of the core tube 400, the flow passage area of the fluid passage 401 is the largest, and the force receiving area of the fluid separation device 010 is the smallest. The fluid separation device 010 is in an open state.

Referring to Figures 7a and 7b, the embodiment further provides a hoistway structure 020. The hoistway structure 020 includes a hoistway 201, an upper impingement device 202 and a lower impingement device 203 disposed at upper and lower ends of the hoistway 201, respectively, and a fluid separation device 010 provided by the present embodiment. The fluid separation device 010 is disposed within the hoistway 201 and is axially slidable along the hoistway 201. Fig. 7a is a schematic view showing the structure of the fluid separation device 010 moving to the lower end of the hoistway 201 and the core tube 400 colliding with the lower impact device 203. At this time, the core tube 400 is in the closed position, and the fluid separation device 010 is in the closed state. Figure 7b is a schematic view of the fluid separation device 010 moving to the upper end of the hoistway 201 and the core tube 400 colliding with the upper impact device 202, at which time the core tube 400 is in the open position and the fluid separation device 010 is in the open state.

When the fluid separation device 010 moves to the lower end of the hoistway 201, and the core tube 400 collides with the lower impact device 203, the core tube 400 moves upward relative to the barrel 100, and the first spring 650 pushes the valve plate 500 to rotate in the reverse direction during the rotation. The valve plate 500 gradually reduces the flow area of the fluid passage 401. When the core tube 400 is moved to the uppermost position relative to the barrel 100 (closed position), the valve plate 500 is perpendicular to the axis of the core tube 400, and the valve plate 500 completely closes the fluid passage 401, and the force receiving area of the fluid partitioning device 010 At the maximum, the fluid separation device 010 is in a closed state. At this time, the fluid below the fluid separation device 010 is difficult to flow above the fluid separation device 010, and the fluid pressure under the fluid separation device 010 acts completely on the fluid separation device 010, thereby driving the fluid separation device 010 upward. During the ascending process of the fluid separation device 010, the effusion above the fluid separation device 010 is lifted up and discharged through the wellhead. During this process, the first elastic member 300 brings the partition member 200 into contact with the inner wall of the hoistway 201, eliminating the gap between the fluid partitioning device 010 and the hoistway 201, further increasing the thrust received by the fluid separating device 010, and improving the fluid. The upstream speed of the partition 010.

When the fluid separation device 010 moves to the upper end of the hoistway 201, and the core tube 400 collides with the upper impact device 202, the core tube 400 moves downward relative to the barrel 100, and the first spring 650 pushes the valve plate 500 to rotate in the forward direction during the rotation process. The valve plate 500 gradually increases the flow area of the fluid passage 401. When the core tube 400 is moved to the lowest position relative to the cylinder 100 (open position), the valve plate 500 is parallel to the axis of the core tube 400, the flow passage area of the fluid passage 401 is the largest, and the force receiving area of the fluid separation device 010 is the smallest. The fluid separation device 010 is in an open state. At this time, the fluid below the fluid separation device 010 flows through the fluid passage 401 to above the fluid separation device 010. The fluid separation device 010 is basically only affected by the viscous resistance of the fluid and the thrust of the end face, and the fluid separation device 010 is weakly applied, so that the fluid separation device 010 can quickly descend to the bottom of the well without shutting the well, thereby greatly improving the oil or natural gas. Mining efficiency.

During the downward flow of the fluid separation device 010, if the partition 200 continues to contact the inner wall of the hoistway 201, the friction between the partition 200 and the inner wall of the hoistway 201 will slow down the downward velocity of the fluid separation device 010 and will cause the partition 200 Faster wear, resulting in less tight sealing of the fluid separation device 010, reducing the useful life of the fluid separator 010. In order to overcome this problem, in the present embodiment, the fluid separation device 010 further includes a mandrel 700; the mandrel 700 is coupled to the core tube 400 and extends axially along the barrel 100; the barrel 100 is provided with a through hole 110; The member 200 is slidably engaged with the through hole 110. The first elastic member 300 is a spring. One end of the first elastic member 300 is rotatably coupled to the partition member 200; the other end of the first elastic member 300 is rotatably fitted with the mandrel 700; when the core tube 400 is in the closed position, the first elastic member 300 is compressed, The spacer 200 is driven to move radially outward; when the core tube 400 is in the open position, the first elastic member 300 is stretched and drives the spacer 200 to move radially inward. In this way, the friction between the partitioning member 200 and the inner wall of the hoistway 201 is eliminated, and the fluid below the fluid separating device 010 can flow upward through the annular gap, further reducing the downward resistance of the fluid separating device 010, making the partitioning member 200 less susceptible to wear. Increases the service life of the fluid separator 010. In the present embodiment, when the fluid separation device 010 is moved to the upper end of the hoistway 201, the upper end of the core tube 400 collides with the upper impact device 202; when the fluid separation device 010 moves to the lower end of the hoistway 201, the lower end of the mandrel 700 and the lower impact device 203 The impact means that the core tube 400 is indirectly impacted by the mandrel 700 and the lower impacting device 203.

Further, please refer to FIG. 8. FIG. 8 is a schematic structural view of the partition 200 in the embodiment. In the present embodiment, the partitioning member 200 includes an arc-shaped partitioning piece 210, and a connecting piece 220 connected to the curved surface in the partitioning piece 210; the first elastic member 300 is rotatably coupled to the connecting piece 220. As such, the connection between the first elastic member 300 and the partition member 200 is made easier, and the manufacture of the partition member 200 is also made simpler.

Further, in order to avoid the movement of the core tube 400 to the closed position during the downward movement of the fluid separation device 010, in the present embodiment, referring to FIG. 9, the positioning ring 120 is disposed in the cylinder 100; the positioning ring 120 is provided with the first a latching portion 121; one end of the core tube 400 is provided with a second latching portion 420 for detachably engaging with the first latching portion 121; when the core tube 400 is in the open position, the first latching portion 121 and the first latching portion 121 The two latching portions 420 are engaged. Thus, when the fluid separation device 010 is lowered, the core tube 400 can be effectively maintained in the open position, improving the operational stability of the fluid separation device 010. Only when the core tube 400 is subjected to impact, the first engaging portion 121 and the second engaging portion 420 can be separated from each other, and the core tube 400 can be moved to the closed position. Specifically, the first latching portion 121 includes two relatively spaced apart protrusions, and the second latching portion 420 is a recess formed at a lower end of the core tube 400. In the process in which the first engaging portion 121 is embedded in the second engaging portion 420, the two raised portions are first compressed, and the distance between the two raised portions is shortened. As the first engaging portion 121 moves toward the inside of the second engaging portion 420, the two raised portions are reset and moved away from each other under the action of the elastic force thereof, thereby causing the first engaging portion 121 and the second engaging portion 420. A valid card is achieved between.

Example 5:

The present embodiment provides a method for producing petroleum or natural gas, which is realized based on the hoistway structure 020 described in any one of Embodiments 1 to 4, the method comprising: when the fluid separation device 010 is descending, the hoistway 201 The exit opens.

The fluid separation device provided in the related art has a large frictional force between the partition member and the inner wall of the hoistway in the downward process, and upward flow of oil or natural gas under the fluid separation device applies an upward thrust to the fluid separation device. Under the combined effect of friction, upward thrust and oil resistance of oil or natural gas, the fluid separation device is slow or even unable to descend. In order to enable the fast fluid separation device to descend or accelerate the descending speed of the fluid separation device, in the related art, when the fluid separation device descends, it is necessary to close the outlet of the hoistway and balance the pressure above and below the fluid separation device so that oil or natural gas does not Then flow upwards. In this way, the upward thrust acting on the fluid separation device is eliminated, and the fluid separation device is only subjected to friction and oil or natural gas self-fluid resistance during the down process. Only in such cases can the fluid separation device descend or descend at a slightly higher speed, but its downstream speed is still slow. In addition, since the fluid separation device needs to close the hoistway when it descends, the oil or natural gas is completely stopped when the fluid separation device descends, which greatly reduces the production efficiency.

The oil or natural gas production method provided by the present embodiment eliminates the friction between the partition 200 and the inner wall of the hoistway 201 when the fluid separation device 010 descends, and the oil or natural gas below the fluid separation device 010 can pass through the fluid separation device. The annular gap between 010 and the hoistway 400, and the fluid passage 401 flowing upward, greatly reduces the force receiving area of the fluid separation device 010, so that the downward resistance of the fluid separation device 010 is greatly reduced, and further down the fluid separation device 010. In the middle, even if the outlet of the hoistway 400 is opened, the fluid separation device 010 can quickly descend. Thus, when the fluid separation device 010 descends, oil or natural gas can still be ejected from the outlet of the hoistway 400, achieving continuous production of oil or natural gas, greatly improving production efficiency.

The above description is only a part of the embodiments of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A fluid separation device (010), characterized by comprising:

Cylinder (100);

a plurality of dividers (200) disposed about the axis of the barrel (100);

a first elastic member (300) coupled to the partition member (200) and configured to apply an elastic force to the partition member (200) radially outward along the cylindrical body (100);

a slidably mating with the barrel (100) and configured as a core tube (400) that moves back and forth between an open position and a closed position along the axial direction of the barrel (100); the core tube (400) Open at both ends, forming a fluid passage (401) in the core tube (400);

a valve plate (500) rotatably disposed within the fluid passage (401);

a control device (600) located within the fluid channel (401);

During the movement of the core tube (400) from the closed position to the open position, the control device (600) drives the valve plate (500) to rotate forwardly by a first predetermined angle and increase the a flow area of the fluid passage (401); the control device (600) drives the valve plate (500) to rotate in the reverse direction during movement of the core tube (400) from the open position to the closed position The second predetermined angle reduces the flow area of the fluid passage (401).
The fluid separation device (010) of claim 1 wherein:

The valve plate (500) is rotatably coupled to the core tube (400) via a rotating shaft (510);

The core tube (400) is provided with a first elongated hole (410) extending along its axial direction;

The control device (600) includes a connecting rod (610); one end of the connecting rod (610) is rotatably connected to the valve plate (500); the other end of the connecting rod (610) runs through the first A long hole (410) is rotatably coupled to the barrel (100).
The fluid separation device (010) of claim 1 wherein:

The core tube (400) is provided with a first elongated hole (410) extending along its axial direction;

The valve plate (500) is rotatably coupled to the barrel (100) by a rotating shaft (510) extending through the first elongated hole (410);

The control device (600) includes a connecting rod (610); one end of the connecting rod (610) is rotatably coupled to the valve plate (500); the other end of the connecting rod (610) is opposite to the core The tubes (400) are rotatably connected.
The fluid separation device (010) of claim 1 wherein:

The core tube (400) is provided with a first elongated hole (410) extending along its axial direction;

The valve plate (500) is rotatably coupled to the barrel (100) by a rotating shaft (510) extending through the first elongated hole (410);

The opposite plate faces of the valve plate (500) are respectively provided with a first inclined surface (520) and a second inclined surface (530); the first inclined surface (520) and the second inclined surface (530) are located at the Both sides of the shaft (510);

The control device (600) includes a first protrusion (620) and a second protrusion (630) disposed on an inner wall of the core tube (400);

During the movement of the core tube (400) from the closed position to the open position, first the second inclined surface (530) is disengaged from the second convex body (630), and then the first convex body ( 620) contacting the surface of the valve plate (500), and driving the valve plate (500) to rotate forwardly by a first predetermined angle;

During the movement of the core tube (400) from the open position to the closed position, first the first protrusion (620) contacts the first slope (520) and drives the valve plate (500) Rotating the third predetermined angle in the opposite direction, then the second protrusion (630) contacts the second slope (530) and continues to drive the valve plate (500) to rotate in a reverse direction by a fourth predetermined angle; The sum of the third preset angle and the fourth preset angle is equal to the second preset angle.
The fluid separation device (010) of claim 1 wherein:

The valve plate (500) is rotatably connected to the core tube (400) through a rotating shaft (510); the opposite two plate faces of the valve plate (500) are respectively provided with a first inclined surface (520) and a second a slope (530); the first slope (520) and the second slope (530) are located on both sides of the rotating shaft (510);

The core tube (400) is provided with a first elongated hole (410) extending along an axial direction thereof; the control device (600) includes a first through hole (410) and a tube a first protrusion (620) and a second protrusion (630) connected to the body (100);

During the movement of the core tube (400) from the closed position to the open position, first the second inclined surface (530) is disengaged from the second convex body (630), and then the first convex body ( 620) contacting the surface of the valve plate (500), and driving the valve plate (500) to rotate forwardly by a first predetermined angle;

During the movement of the core tube (400) from the open position to the closed position, first the first protrusion (620) contacts the first slope (520) and drives the valve plate (500) Rotating the third predetermined angle in the opposite direction, then the second protrusion (630) contacts the second slope (530) and continues to drive the valve plate (500) to rotate in a reverse direction by a fourth predetermined angle; The sum of the third preset angle and the fourth preset angle is equal to the second preset angle.
The fluid separation device (010) of claim 1 wherein:

The core tube (400) is provided with a first elongated hole (410) extending along its axial direction;

The valve plate (500) is rotatably coupled to the barrel (100) by a rotating shaft (510) extending through the first elongated hole (410);

One plate surface of the valve plate (500) is provided with an opposite first inclined surface (520) and a second inclined surface (530); the first inclined surface (520) and the second inclined surface (530) are located at the Both sides of the shaft (510);

The control device (600) includes a first protrusion (620), a second protrusion (630) and a third protrusion (640) disposed on an inner wall of the core tube;

During the movement of the core tube (400) from the closed position to the open position, first the valve plate (500) is disengaged from the third protrusion (640), and then the first protrusion (620) Contacting the first inclined surface (520), and driving the valve plate (500) to rotate forwardly by a first predetermined angle;

During the movement of the core tube (400) from the open position to the closed position, first the second protrusion (630) contacts the second slope (530) and drives the valve plate ( 500) reversely rotating the third predetermined angle; then the third protrusion (640) is in contact with the other surface of the valve plate (500), and continues to drive the valve plate (500) to rotate in the opposite direction. Four preset angles; a sum of the third preset angle and the fourth preset angle is equal to the second preset angle.
The fluid separation device (010) of claim 1 wherein:

The valve plate (500) is rotatably connected to the core tube (400) through a rotating shaft (510); one surface of the valve plate (500) is provided with an opposite first inclined surface (520) and a second surface a slope (530); the first slope (520) and the second slope (530) are located on both sides of the rotating shaft (510);

The core tube (400) is provided with a first elongated hole (410) extending along an axial direction thereof; the control device (600) includes a first through hole (410) and a tube a first protrusion (620), a second protrusion (630) and a third protrusion (640) connected to the body (100);

During the movement of the core tube (400) from the closed position to the open position, first the valve plate (500) is disengaged from the third protrusion (640), and then the first protrusion (620) Contacting the first inclined surface (520), and driving the valve plate (500) to rotate forwardly by a first predetermined angle;

During the movement of the core tube (400) from the open position to the closed position, first the second protrusion (630) contacts the second slope (530) and drives the valve plate ( 500) reversely rotating the third predetermined angle; then the third protrusion (640) is in contact with the other surface of the valve plate (500), and continues to drive the valve plate (500) to rotate in the opposite direction. Four preset angles; a sum of the third preset angle and the fourth preset angle is equal to the second preset angle.
The fluid separation device (010) of claim 1 wherein:

The core tube (400) is provided with a first elongated hole (410) extending along its axial direction;

The valve plate (500) is rotatably coupled to the barrel (100) by a rotating shaft (510) extending through the first elongated hole (410);

The control device (600) includes a first spring (650); one end of the first spring (650) is rotatably coupled to the valve plate (500); the other end of the first spring (650) is The core tube (400) is rotatably coupled.
A fluid separation device (010) according to claim 8 wherein:

The fluid separation device (010) further includes a mandrel (700); the mandrel (700) is coupled to the core tube (400) and extends axially along the barrel (100); the barrel ( 100) a through hole (110) is provided in the upper opening; the partitioning member (200) is slidably engaged with the through hole (110); one end of the first elastic member (300) and the partitioning member (200) Rotatablely coupled; the other end of the first elastic member (300) is rotatably coupled to the mandrel (700);

When the core tube (400) is in the closed position, the first elastic member (300) is compressed and drives the partition member (200) to move radially outward; when the core tube (400) is opened In position, the first resilient member (300) is stretched and causes the spacer (200) to move radially inward.
The fluid separation device (010) of claim 9 wherein:

The partition (200) includes a curved partition piece (210), and a connecting piece (220) connected to the curved surface of the dividing piece (210); the first elastic piece (300) is connected to the connecting piece The sheets (220) are rotatably connected.
A fluid separation device (010) according to claim 8 wherein

a positioning ring (120) is disposed in the cylinder (100); a first engaging portion (121) is disposed on the positioning ring (120); and one end of the core tube (400) is provided for a first latching portion (420) that is detachably fastened by the first latching portion (121); the first latching portion (121) and the first portion when the core tube (400) is in an open position The two card joints (420) are engaged.
The fluid separation device (010) of claim 1 wherein:

The core tube (400) is provided with a first positioning space (810) and a second positioning space (820), and the barrel (100) is connected with a positioning block (840) through an elastic return member (830); The cylinder (100) is provided with a first positioning space (810) and a second positioning space (820), the core tube (400) is connected to the positioning block (840) through the elastic reset member (830);

When the core tube (400) is in the open position, the positioning block (840) is embedded in the first positioning space (810) by the elastic return member (830); when the core When the tube (400) is in the closed position, the positioning block (840) is embedded in the second positioning space (820) by the elastic return member (830).
The fluid separation device (010) of claim 1 wherein:

The fluid separation device (010) further includes a through-the barrel (100), and one end is connected to the partition (200), and the other end and the core tube (400) are passed through a mating surface (850). a slidingly cooperating guide (900); wherein

The mating surface (850) extends radially outward relative to the barrel (100) in a direction from the closed position to the open position; when the core tube (400) moves toward the open position The guiding device (900) drives the partition (200) to move radially inward relative to the barrel (100); when the core tube (400) moves to the closed position, the first An elastic member drives the spacer (200) to move radially outward relative to the barrel (100).
A hoistway structure (020) characterized by:

A hoistway (201), an upper impact device (202) and a lower impact device (203) respectively disposed at upper and lower ends of the hoistway (201), and a fluid separation device (010) according to any one of claims 1-13 ;

The fluid separation device (010) is disposed within the hoistway (201) and configured to slide axially along the hoistway (201); when the core tube (400) and the upper impact device (202) When the collision occurs, the core tube (400) moves to the open position, and when the core tube (400) collides with the lower impact device (203), the core tube (400) moves to the closed position. .
A method of producing petroleum or natural gas, characterized in that the production method is implemented based on the hoistway structure (020) of claim 14, the production method comprising:

The outlet of the hoistway (201) opens as the fluid separation device (010) descends.