Oil wellhead equipment with jack-up platform and its usage method

Abstract

This invention relates to the field of oil extraction technology, specifically to an oil extraction wellhead device equipped with a jack-up platform and its usage method, comprising: a straight connecting pipe, to which a four-way valve is connected, the four-way valve having a first valve body, a second valve body, and a third valve body; a placement chamber disposed within the four-way valve, wherein a flow guide is detachably installed, the flow guide having a first state, a second state, and a third state that can be switched by being driven, and when the flow guide is in the first state or the third state, it can guide oil toward the first valve body and the third valve body; and a guide member detachably installed within the placement chamber, the guide member having a guide groove on its side wall, and a switching member slidably installed within the flow guide member slidingly engaging with the guide groove, which can guide oil toward the second valve body when the flow guide member is in the second state, thereby improving wellhead durability and reducing operating costs.

Description

Technical Field

[0001] This invention relates to the field of oil extraction technology, specifically to an oil extraction wellhead device equipped with a jack-up platform and its usage method. Background Technology

[0002] Oil wellhead equipment is a crucial component of oil extraction equipment. It typically takes the form of a four-way valve and is used to extract different substances from oil and its byproducts. Specifically, oil wellhead equipment mainly includes a feed pipe and three sets of control valves. Two sets of control valves are coaxial and perpendicular to the other set of control valves coaxial with the feed pipe. During operation, the corresponding control valve is selectively opened based on the desired substance to be discharged.

[0003] During the above process, when the side control valve is opened, the oil and its accessories need to change their movement direction by 90° from the feed pipe and flow towards the corresponding side control valve. During this process, because the oil and its accessories are mixed with sand and gravel, the sand and gravel often impact the control valve coaxial with the feed pipe first due to inertia. This causes the control valve coaxial with the feed pipe to be worn not only when it is opened, but also when the side control valve is opened. This results in abnormal wear on the valve plate of this set of control valves and the corresponding four-way valve wall compared to the other two sets of control valves. In severe cases, erosion may occur. Furthermore, the impact of sand and gravel may also cause deformation of the valve plate of the control valve coaxial with the feed pipe, which will lead to a decrease in sealing performance and greatly shorten its service life. Summary of the Invention

[0004] The purpose of this invention is to provide an oil wellhead device equipped with a jack-up platform and a method for using the same, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: Oil wellhead equipment equipped with a jack-up platform includes: A straight connecting pipe is connected to a four-way valve, and the four-way valve is provided with a first valve body, a second valve body and a third valve body; A placement chamber is disposed within the four-way valve. A flow guide is detachably installed within the placement chamber. The flow guide has a first state, a second state, and a third state that can be switched by being driven. When the flow guide is in the first state or the third state, it can guide oil toward the first valve body and the third valve body. The guide is detachably installed in the placement cavity. A guide groove is provided on the side wall of the guide. A switching component slidably installed in the guide is slidably engaged with the guide groove, which can guide oil toward the second valve body when the guide is in the second state.

[0006] As a further embodiment of the present invention: the placement cavity is a U-shaped cavity, the guide member is a cylindrical structure, the circumferential radius of the cylindrical structure is the same as the circumferential radius of the bottom of the U-shaped cavity, and the guide member can be placed on the upper part of the U-shaped cavity; The guide has a protrusion on its side and a groove on the side wall of the U-shaped cavity. The protrusion and the groove slide together, and when the end of the protrusion abuts against the groove, the lower part of the guide fits against the flow guide.

[0007] As a further embodiment of the present invention: the flow guide is provided with toothed grooves on both sides, and two sets of toothed shafts are detachably installed on both sides of the straight connecting pipe, the two sets of toothed shafts being adapted to the toothed grooves; One set of the toothed shafts is connected to a self-locking motor that is detachably mounted on the side wall of the straight connecting pipe.

[0008] As a further embodiment of the present invention: the flow guide is provided with a first flow channel, a second flow channel and a hysteresis groove that are interconnected, the switching component is sealed and slidably installed in the hysteresis groove, and a smooth flow surface can be formed between one end of the switching component and the first flow channel.

[0009] As a further embodiment of the present invention: the other end of the switching component is provided with two sets of symmetrically arranged convex shafts, and when the convex shafts move to the middle of the guide groove, the second drainage channel is opened; The guide groove includes two first arc-shaped grooves disposed on the inner wall of the guide member, and a protruding groove extending away from the center of the first arc-shaped groove is disposed in the middle of the two first arc-shaped grooves.

[0010] As a further aspect of the present invention, it also includes: Three sets of locking structures are respectively connected to the first valve body, the second valve body and the third valve body, and the ends of the locking structures are provided with fitting shafts; The follower disk is coaxially and fixedly connected to one of the sets of toothed shafts. The follower disk is provided with a drive groove structure, which is slidably engaged with the fitting shaft, so that the first valve body, the second valve body, or the third valve body can be opened when the guide member is in the first state, the second state, or the third state.

[0011] As a further embodiment of the present invention: the locking structure includes a locking disc connecting the first valve body, the second valve body and the third valve body, and the locking disc is provided with a locking groove; The locking structure also includes a guide member fixedly installed on the four-way valve. A locking rod is slidably installed on the guide member. One end of the locking rod is adapted to the locking groove, and the other end is connected to the fitting shaft.

[0012] As a further embodiment of the present invention: the drive groove structure includes a first drive groove and a second drive groove. The first drive groove includes two second arc-shaped grooves and a recessed groove disposed in the middle of the two end second arc-shaped grooves. The recessed groove extends toward the center away from the follower disk.

[0013] As a further embodiment of the present invention: the second driving groove includes a third arc-shaped groove and a fourth arc-shaped groove, wherein the circumferential radius of the third arc-shaped groove is greater than the circumferential radius of the fourth arc-shaped groove; The third arc-shaped groove and the fourth arc-shaped groove are connected by an oblique connecting groove.

[0014] The method of using the oil wellhead device equipped with a jack-up platform as described above includes: Before opening the first valve body, the second valve body, and the third valve body, the self-locking motor is controlled to operate according to the valve body number to be opened. The self-locking motor drives the guide to rotate, so that the guide is switched to the first state, the second state, or the third state. When the flow guide is switched to the first state, the second state, or the third state, the corresponding first valve body, the second valve body, or the third valve body is unlocked. When the first, second, or third valve body is opened, oil or by-products are guided to the first, second, or third valve body via the flow guide.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By using the flow guide, when the first and third valve bodies are opened, the oil and its admixtures can smoothly transition and deflect 90° under the guidance of the first flow channel. This ensures the smooth flow of the oil and its admixtures when changing their direction of movement. On the other hand, it allows the sand and gravel carried by the oil and its admixtures to act on the flow guide, thereby preventing abnormal wear caused by the sand and gravel acting on the valve plate of the second valve body or the valve wall of the four-way valve due to inertia when the first and third valve bodies are opened. At the same time, it avoids the oil and its admixtures and sand and gravel impacting the valve plate of the second valve body, causing deformation of the valve plate and thus reducing the sealing performance. The locking structure and follower plate ensure that the state of the guide component and the opening and closing of the valve body are synchronized. This reduces impact and extends the life of the self-locking motor. It also prevents sand and gravel from moving towards the four-way valve wall under the guidance of the guide component, reducing abnormal wear on the four-way valve wall. At the same time, it ensures that only one set of valve bodies can be opened at the same time, effectively preventing multiple sets of valve bodies from opening simultaneously and preventing the discharge materials from mixing. Attached Figure Description

[0016] Figure 1 A schematic diagram of one embodiment of an oil wellhead device equipped with a jack-up platform.

[0017] Figure 2 This is a schematic diagram of another angle of an embodiment of an oil wellhead device equipped with a jack-up platform.

[0018] Figure 3 An exploded view of one embodiment of an oil wellhead assembly equipped with a jack-up platform.

[0019] Figure 4 This is a schematic diagram of the internal structure of a four-way valve in one embodiment of an oil wellhead device equipped with a self-elevating platform.

[0020] Figure 5 An exploded view of the flow guide and switching components in one embodiment of an oil wellhead device equipped with a self-elevating platform.

[0021] Figure 6 This is a cross-sectional view of the guide component in one embodiment of an oil wellhead device equipped with a self-elevating platform.

[0022] Figure 7 A cross-sectional view of the flow guide and guide components in one embodiment of an oil wellhead device equipped with a self-elevating platform.

[0023] Figure 8 This is a schematic diagram of the follower disc and self-locking structure in one embodiment of an oil wellhead device equipped with a self-elevating platform.

[0024] Figure 9 An exploded view of the self-locking structure in one embodiment of an oil wellhead device equipped with a jack-up platform.

[0025] Figure 10 This is a schematic diagram of the structure of the follower plate, the first drive groove, and the second drive groove in one embodiment of an oil wellhead device equipped with a self-elevating platform.

[0026] In the diagram: 1. Straight connecting pipe; 101. U-shaped cavity; 102. Conducting channel; 2. First valve body; 3. Second valve body; 4. Third valve body; 5. Flow guide; 501. Toothed groove; 502. First flow channel; 503. Second flow channel; 504. Hysteresis groove; 6. Switching component; 601. Protruding shaft; 7. Self-locking motor; 8. Guide component; 801. First arc-shaped groove; 802. Protruding groove; 9. Follower plate; 10. Locking plate; 1001. Locking groove; 11. Locking rod; 1101. Fitting shaft; 12. Guide component; 13. First drive groove; 1301. Second arc-shaped groove; 1302. Recessed groove; 14. Second drive groove; 1401. Third arc-shaped groove; 1402. Fourth arc-shaped groove; 1403. Angled connecting groove; 15. Toothed shaft; 16. Lifting platform. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0029] Please see Figures 1-10 In this embodiment of the invention, an oil wellhead device equipped with a self-elevating platform includes: a straight connecting pipe 1, a placement cavity, and a guide 8.

[0030] A four-way valve is connected to the straight connecting pipe 1. The four-way valve is equipped with a first valve body 2, a second valve body 3, and a third valve body 4. Specifically, the four-way valve is connected to the first valve body 2, the second valve body 3, and the third valve body 4 via flanges. A lifting platform 16 is provided on the side of the straight connecting pipe 1. During use, because the second valve body 3 is relatively high, it is necessary to climb to a height when connecting external pipelines. The lifting platform 16 can assist the installation personnel to climb to a height, thereby facilitating the connection of the pipeline to a certain extent. This prevents the connection from being unstable due to the difficulty of operation during pipeline connection, which could lead to slippage between the external pipeline and the second valve body 3 when transporting oil or accessories, thus improving the safety of the oil extraction process.

[0031] The placement cavity is located within the four-way valve, and a flow guide 5 is detachably installed within the placement cavity. In this application, the flow guide 5, as a consumable component, guides the flow of oil. When the flow guide 5 guides the oil movement, especially when the oil enters the straight connecting pipe 1 and is guided by the flow guide 5 towards the first valve body 2 and the third valve body 4, the oil and its admixtures will create a 90° curved flow path. At this time, impurities such as sand and gravel in the oil and its admixtures will directly act on the flow guide 5, causing the resulting wear to accumulate on the flow guide 5. This, to a certain extent, prevents sand and gravel in the oil and its admixtures from directly acting on the valve plate of the second valve body 3 or the four-way valve, which would cause the valve plate of the second valve body 3 or the valve wall of the four-way valve to become thinner due to wear, resulting in a decrease in pressure or direct erosion, causing leakage of oil and its admixtures. Therefore, the flow guide 5 is used as a detachable consumable component in this application, as detailed below: The placement cavity is a U-shaped cavity 101, the guide 5 is a cylindrical structure, the circumferential radius of the cylindrical structure is the same as the circumferential radius of the bottom of the U-shaped cavity 101, and the guide 8 can be placed on the upper part of the U-shaped cavity 101. The guide 8 has a protrusion on its side and the U-shaped cavity 101 has a groove on its side wall. The protrusion and the groove slide together, and when the end of the protrusion abuts against the groove, the lower part of the guide 8 fits against the flow guide 5. The guide 8 is detachably installed in the placement cavity. A guide groove is provided on the side wall of the guide 8. The switching piece 6, which is slidably installed in the flow guide 5, slides in cooperation with the guide groove, so that when the flow guide 5 is in the second state, it can guide the oil to move towards the second valve body 3. The flow guide 5 has coaxial toothed grooves 501 on both sides, and two sets of toothed shafts 15 are detachably installed on both sides of the straight connecting pipe 1. The two sets of toothed shafts 15 are adapted to the toothed grooves 501. One set of the toothed shafts 15 is connected to a self-locking motor 7 that is detachably mounted on the side wall of the straight connecting pipe 1.

[0032] During assembly, the four-way valve is first connected to the straight pipe 1 via a flange. Then, the guide element 5 is placed into the U-shaped cavity 101. Since the circumferential radius of the guide element 5 is the same as the circumferential radius of the bottom of the U-shaped cavity 101, the guide element 5 can perfectly fit the bottom of the U-shaped cavity 101 when it is placed in the U-shaped cavity 101, thereby improving the sealing between the two to a certain extent. After the guide element 5 is installed, the switching element 6 is placed into the guide element 5.

[0033] After the switching component 6 is installed in place, the guide component 8 is placed into the U-shaped cavity 101, so that when the protrusion abuts against the end of the groove, the lower part of the guide component 8 fits against the flow guide component 5, so that the guide component 8 has a certain restrictive effect on the flow guide component 5, preventing the flow guide component 5 from shaking or vibrating in the U-shaped cavity 101 during the transportation of oil and its byproducts, thus preventing abnormal wear.

[0034] After the guide 8 is installed in place, adjust the angle of the guide 5, and then install the toothed shafts 15 on both sides respectively, so that the toothed shafts 15 penetrate the valve wall of the four-way valve and extend into the toothed groove 501. Then install the toothed shafts 15 and the self-locking motor 7, and finally install the second valve body 3 in place.

[0035] Based on the aforementioned detachable connection method, it is possible to replace the guide component 5. When the guide component 5 is severely worn and needs to be replaced, it can be more convenient to align and replace it. By replacing the guide component 5 in this way, it can be ensured that when guiding oil and its accessories, the sand and gravel mixed in the oil and its accessories will not cause abnormal wear on the valve plate of the second valve body 3 or the valve wall of the four-way valve, thereby improving the durability and safety of the wellhead device.

[0036] It should be noted that in order to ensure that the underground oil pipeline can be cut off when replacing the guide component 5, a shut-off valve (not shown in the figure) needs to be installed between the underground oil pipeline and the straight connecting pipe 1. When replacing the guide component 5, opening the shut-off valve can prevent oil jetting and improve the safety of the replacement process of the guide component 5.

[0037] Please see Figures 6-7 The flow guide 5 has a first state, a second state and a third state that can be switched by being driven. When the flow guide 5 is in the first state or the third state, it can guide oil toward the first valve body 2 and the third valve body 4. The flow guide 5 has a first flow channel 502, a second flow channel 503, and a hysteresis groove 504 that are interconnected. The switching member 6 is slidably installed in the hysteresis groove 504, and a smooth flow surface can be formed between one end of the switching member 6 and the first flow channel 502. The other end of the switching component 6 is provided with two sets of symmetrically arranged convex shafts 601. When the convex shafts 601 move to the middle of the guide groove, the second drainage channel 503 is opened. The guide groove includes two first arc-shaped grooves 801 disposed on the inner wall of the guide member 8. A protruding groove 802 extending away from the center of the first arc-shaped groove 801 is disposed in the middle of the two first arc-shaped grooves 801. The end of the first arc-shaped groove 801 is open so that the convex shaft 601 can enter the first arc-shaped groove 801 when the guide member 8 is installed.

[0038] In use, the self-locking motor 7 drives one set of toothed shafts 15 to rotate, which in turn drives the guide member 5 to rotate in the U-shaped cavity 101. For example, in the initial state, when the guide member 5 is in the first state, the convex shaft 601 at the end of the switching member 6 is at the end of one set of first arc grooves 801. At this time, the switching member 6 is in a state where one end is coplanar with the first drainage channel 502. At this time, the second drainage channel 503 is blocked. At the same time, the conduction channel 102 formed in the four-way valve is in a state of conduction with the first drainage channel 502. When the oil and its accessories enter the first drainage channel 502 through the conduction channel 102, they can make arc-shaped movements under the guidance of the first drainage channel 502, so that the movement path of the oil and its accessories can be smoothly transitioned and deflected by 90° to move towards the first valve body 2. Subsequently, during the flow of the oil and its accessories, the sand and gravel carried will directly act on the inner wall of the first drainage channel 502 on the guide member 5 when the direction of movement changes.

[0039] Similarly, when the guide 5 needs to be switched to the third state, it is only necessary to rotate the guide 5 by 90° so that the oil and its accessories entering through the guide channel 102 can move toward the third valve body 4 under the guidance of the first guide channel 502.

[0040] Based on the above configuration, under the action of the guide member 5, when the first valve body 2 and the third valve body 4 are opened, the oil and its accessories can smoothly transition and deflect 90° under the guidance of the first flow channel 502. This ensures the smooth flow of the oil and its accessories when changing the direction of movement, and allows the sand and gravel carried by the oil and its accessories to act on the guide member 5. This prevents the sand and gravel from acting on the valve plate of the second valve body 3 or the valve wall of the four-way valve due to inertia when the first valve body 2 and the third valve body 4 are opened, thus preventing abnormal wear. At the same time, it avoids the oil and its accessories and sand and gravel impacting the valve plate of the second valve body 3, causing deformation of the valve plate of the second valve body 3, which would lead to a decrease in sealing performance.

[0041] Furthermore, when the guide member 5 switches from the first or third state to the second state, the guide member 5 can drive the switching member 6 to make a circular motion, and the convex shaft 601 at the end of the switching member 6 can move along the first arc groove 801 toward the protruding groove 802. When the convex shaft 601 moves to the middle of the protruding groove 802, the convex shaft 601 pulls the switching member 6 to move. At this time, the switching member 6 moves along the hysteresis groove 504 and opens the second drainage channel 503. In this state, when the second valve body 3 is opened, the oil and its accessories can move from the second drainage channel 503 toward the second valve body 3, thereby achieving conduction. Based on this setting, the guide member 5 can not only guide the oil and its accessories toward the first valve body 2 and the third valve body 4, reducing the wear of the valve plate of the second valve body 3 or the valve wall of the four-way valve, but also ensure the normal flow of oil and its accessories when the second valve body 3 is opened.

[0042] Furthermore, the rotation of the guide member 5 not only enables the conduction of a single valve body, but also achieves secondary sealing of the remaining valve bodies. This ensures that while a single valve body is conducting, the remaining valve bodies are in a state of secondary sealing, improving the sealing performance and reducing the pressure on the valve body to a certain extent, thus guaranteeing the valve body's sealing performance.

[0043] Please see Figures 8-9 The oil wellhead device of the self-elevating platform also includes: a locking structure and a follower disk 9.

[0044] The locking structure is provided in three sets, and is respectively connected to the first valve body 2, the second valve body 3 and the third valve body 4. The end of the locking structure is provided with a fitting shaft 1101. The locking structure includes a locking disc 10 connecting the first valve body 2, the second valve body 3 and the third valve body 4, and the locking disc 10 is provided with a locking groove 1001. The locking structure also includes a guide member 12 fixedly installed on the four-way valve. A locking rod 11 is slidably installed on the guide member 12. One end of the locking rod 11 is adapted to the locking groove 1001, and the other end is connected to the fitting shaft 1101.

[0045] In this embodiment, in the initial state, the locking rod 11 is in the locking groove 1001. At this time, the rotation shafts of two of the three valve bodies (first valve body 2, second valve body 3 and third valve body 4) are locked, and the rotation shaft of the remaining valve body is unlocked. At this time, the guide 5 is in the state of guiding oil and its accessories toward the valve body. That is, the corresponding valve body can only be opened when the guide 5 is switched to the corresponding state, so that the switching of the state of the guide 5 and the opening of the corresponding valve body have the existing order. The purpose of this setting is to prevent the above steps from being reversed, which would cause the self-locking mechanism in the self-locking motor 7 to be impacted by the impact of oil and its accessories when the guide 5 is switched, causing damage to the self-locking motor 7.

[0046] In detail, taking the case where the first valve body 2 opens first and then the guide member 5 switches to the first state as an example, when there is a small opening between the first flow channel 502 on the guide member 5 and the valve wall connecting the first valve body 2, the oil and its accessories in the underground oil pipeline will move rapidly toward the opening under high pressure, thereby impacting the guide member 5. Although the impact force will slowly decrease in the future, if the valve body opens first and the guide member 5 switches states every time, the guide member 5 will be impacted every time it switches. Over time, this will cause damage to the self-locking mechanism inside the self-locking motor 7.

[0047] Based on the above description, it is not difficult to conclude that when oil and its accessories in underground oil pipelines move rapidly toward the opening under high pressure, the sand and gravel they carry also tend to turn and move toward the four-way valve wall. During this process, abnormal wear will occur on the four-way valve wall.

[0048] It is worth noting that the aforementioned impacts and abnormal wear mainly occur when the guide 5 switches between the first and third states. In actual use, only one of the three valve bodies is allowed to be opened at the same time. Through the above settings, the simultaneous opening of multiple valve bodies can be effectively avoided, preventing the discharge of mixed materials.

[0049] Please see Figures 8-10 The follower disk 9 is coaxially and fixedly connected to one of the toothed shafts 15. The follower disk 9 is provided with a drive groove structure. The drive groove structure is slidably engaged with the fitting shaft 1101, so that when the guide member 5 is in the first state, the second state, or the third state, the first valve body 2, the second valve body 3, or the third valve body 4 can be opened.

[0050] The drive groove structure includes a first drive groove 13 and two sets of second drive grooves 14. The first drive groove 13 includes two sections of second arc-shaped grooves 1301 and a recessed groove 1302 disposed in the middle of the two ends of the second arc-shaped grooves 1301. The recessed groove 1302 extends toward the center away from the follower disk 9. The second drive groove 14 includes a third arc-shaped groove 1401 and a fourth arc-shaped groove 1402, wherein the circumferential radius of the third arc-shaped groove 1401 is greater than the circumferential radius of the fourth arc-shaped groove 1402. The third arc-shaped groove 1401 and the fourth arc-shaped groove 1402 are connected by an oblique connecting groove 1403.

[0051] In the initial state, the fitting shaft 1101 on one of the locking structures is located at the end of the third arc groove 1401 on one of the second drive grooves 14 away from the fourth arc groove 1402. At this time, the locking rod 11 in the locking structure is inserted into the locking groove 1001, so that the corresponding valve body is locked. The fitting shaft 1101 on the second locking structure is located at the end of the fourth arc groove 1402 on another second driving groove 14 that is away from the third arc groove 1401. At this time, the locking rod 11 of the locking structure is in the state of being separated from the locking groove 1001, and the corresponding valve body is in the unlocked state, so that the valve body can be opened. The fitting shaft 1101 on the third locking structure is located at the end of the second arc-shaped groove 1301 on the first drive groove 13. At this time, the locking rod 11 of the locking structure is inserted into the locking groove 1001, so that the corresponding valve body is locked.

[0052] When the state of the guide 5 changes, the state of the follower disk 9 will also change accordingly, and the fitting shaft 1101 can move along the corresponding first drive groove 13 and second drive groove 14, thereby enabling the corresponding valve body to be unlocked. This ensures that the corresponding valve body can only be opened after the state of the guide 5 has been switched, thus ensuring that the self-locking mechanism in the self-locking motor 7 can be subjected to less impact and thus obtain a longer service life.

[0053] It should also be noted that when the fitting shaft 1101 on the locking structure connecting the second valve body 3 is in the middle of the recessed groove 1302, the locking structure is in the unlocked state. At this time, the fitting shaft 1101 on the other two locking structures is in the inclined connecting groove 1403 on the second drive groove 14. In this state, although the locking rod 11 on the two locking structures will move, it will not completely disengage from the locking groove 1001, that is, the first valve body 2 and the third valve body 4 are still in the locked state.

[0054] As an embodiment of the present invention, a method for using the oil wellhead device equipped with a jack-up platform is also provided, including: Before opening the first valve body 2, the second valve body 3, and the third valve body 4, the self-locking motor 7 is controlled to operate according to the valve body number to be opened. The self-locking motor 7 can drive the guide 5 to rotate, so that the guide 5 can switch to the first state, the second state, or the third state. When the flow guide 5 switches to the first state, the second state, or the third state, the corresponding first valve body 2, the second valve body 3, or the third valve body 4 is unlocked. When the first valve body 2, the second valve body 3, or the third valve body 4 is opened, oil or by-products are guided to the first valve body 2, the second valve body 3, or the third valve body 4 via the guide element 5.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Oil wellhead equipment equipped with a jack-up platform, including: A straight connecting pipe is connected to a four-way valve, and the four-way valve is provided with a first valve body, a second valve body and a third valve body; Its characteristic is that it further includes: A placement chamber is disposed within the four-way valve. A flow guide is detachably installed within the placement chamber. The flow guide has a first state, a second state, and a third state that can be switched by being driven. When the flow guide is in the first state or the third state, it can guide oil toward the first valve body and the third valve body. The guide is detachably installed in the placement cavity. A guide groove is provided on the side wall of the guide. A switching component slidably installed in the guide is slidably engaged with the guide groove, which can guide oil toward the second valve body when the guide is in the second state.

2. The oil wellhead device with a jack-up platform as described in claim 1, characterized in that, The placement cavity is a U-shaped cavity, and the guide is a cylindrical structure. The circumferential radius of the cylindrical structure is the same as the circumferential radius of the bottom of the U-shaped cavity, and the guide can be placed on the upper part of the U-shaped cavity. The guide has a protrusion on its side and a groove on the side wall of the U-shaped cavity. The protrusion and the groove slide together, and when the end of the protrusion abuts against the groove, the lower part of the guide fits against the flow guide.

3. The oil wellhead device with a jack-up platform as described in claim 1, characterized in that, The flow guide is provided with toothed grooves on both sides, and two sets of toothed shafts are detachably installed on both sides of the straight connecting pipe. The two sets of toothed shafts are adapted to the toothed grooves. One set of the toothed shafts is connected to a self-locking motor that is detachably mounted on the side wall of the straight connecting pipe.

4. The oil wellhead device with a jack-up platform as described in claim 1, characterized in that, The flow guide has a first flow channel, a second flow channel and a hysteresis groove that are interconnected. The switching component is sealed and slidably installed in the hysteresis groove, and a smooth flow surface can be formed between one end of the switching component and the first flow channel.

5. The oil wellhead device with a jack-up platform according to claim 4, characterized in that, The other end of the switching component is provided with two sets of symmetrically arranged convex shafts. When the convex shafts move to the middle of the guide groove, the second drainage channel is opened. The guide groove includes two first arc-shaped grooves disposed on the inner wall of the guide member, and a protruding groove extending away from the center of the first arc-shaped groove is disposed in the middle of the two first arc-shaped grooves.

6. The oil wellhead device with a jack-up platform according to claim 3, characterized in that, Also includes: Three sets of locking structures are respectively connected to the first valve body, the second valve body and the third valve body, and the ends of the locking structures are provided with fitting shafts; The follower disk is coaxially and fixedly connected to one of the sets of toothed shafts. The follower disk is provided with a drive groove structure, which is slidably engaged with the fitting shaft, so that the first valve body, the second valve body, or the third valve body can be opened when the guide member is in the first state, the second state, or the third state.

7. The oil wellhead device with a jack-up platform according to claim 6, characterized in that, The locking structure includes a locking disc connecting the first valve body, the second valve body, and the third valve body, and the locking disc is provided with a locking groove; The locking structure also includes a guide member fixedly installed on the four-way valve. A locking rod is slidably installed on the guide member. One end of the locking rod is adapted to the locking groove, and the other end is connected to the fitting shaft.

8. The oil wellhead device with a jack-up platform according to claim 6, characterized in that, The drive groove structure includes a first drive groove and a second drive groove. The first drive groove includes two second arc-shaped grooves and a recessed groove disposed in the middle of the two end second arc-shaped grooves. The recessed groove extends toward the center away from the follower disk.

9. The oil wellhead device with a jack-up platform according to claim 8, characterized in that, The second driving groove includes a third arc-shaped groove and a fourth arc-shaped groove, wherein the circumferential radius of the third arc-shaped groove is greater than the circumferential radius of the fourth arc-shaped groove; The third arc-shaped groove and the fourth arc-shaped groove are connected by an oblique connecting groove.

10. The method of using the oil wellhead device with a jack-up platform as described in any one of claims 1 to 9, characterized in that, include: Before opening the first valve body, the second valve body, and the third valve body, the self-locking motor is controlled to operate according to the valve body number to be opened. The self-locking motor drives the guide to rotate, so that the guide is switched to the first state, the second state, or the third state. When the flow guide is switched to the first state, the second state, or the third state, the corresponding first valve body, the second valve body, or the third valve body is unlocked. When the first, second, or third valve body is opened, oil or by-products are guided to the first, second, or third valve body via the flow guide.

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