A vertically movable throttling and well-killing manifold

Abstract

The present invention relates to the field of well-killing manifolds, and specifically to a vertically movable throttling well-killing manifold, comprising a lifting mechanism, which is used for vertical lifting and lowering of the well-killing manifold; a well-killing mechanism, which is used for controlling the wellhead pressure; the well-killing mechanism is fixedly mounted on the lifting mechanism; wherein the well-killing mechanism comprises a central mechanism, and a No. 1 throttling mechanism, a liquid injection component and a No. 2 throttling mechanism are respectively fixedly mounted on the outer side of the central mechanism, wherein the No. 1 throttling mechanism and the No. 2 throttling mechanism are symmetrically arranged at the two ends of the central mechanism, and the throttling strip is squeezed outward by the downward movement of the end panel, wherein the throttling strip is symmetrically connected to the two ends of the throttling plate, and the contact surfaces between the throttling strip and the end panel are both inclined surfaces, so the throttling strip will also extend from the throttling plate and stick to the inner wall of the circulation pipe, thereby playing a role in secondary throttling treatment of the well fluid.

Description

Technical Field

[0001] The invention relates to the technical field of well-killing manifolds, in particular to a throttling well-killing manifold capable of vertical movement. Background Art

[0002] The choke manifold is a necessary equipment for controlling well kick and implementing oil and gas well pressure control technology. When the blowout preventer is closed, the throttle valve is opened and closed to control a certain casing pressure to maintain the bottom hole pressure slightly greater than the formation pressure, so as to prevent the formation fluid from flowing into the well further. In addition, when shutting in the well, the throttle manifold can be used to release pressure to achieve soft shut-in. When the pressure in the well rises to a certain limit, it is used to release the blowout to protect the wellhead. When the pressure in the well rises, the throttle valve on the throttle manifold can be opened and closed to release the fluid in the well to control the casing pressure. When the casing pressure is very high, the blowout can be directly released through the gate valve.

[0003] There are several problems with the existing well-killing manifolds: 1. Most of the existing throttling well-killing manifolds are fixed structures with non-adjustable heights. They cannot be adjusted according to on-site usage requirements and are less practical. 2. Long-term use causes wear of the internal components of the throttle valve, affecting the throttling effect and sealing performance. At the same time, the valve core may become stuck due to dirt, foreign matter or component deformation, causing the throttle valve to be unable to adjust the flow normally. Summary of the invention

[0004] The present invention provides a vertically movable throttling and well-killing manifold to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a vertically movable throttling and well-killing manifold, comprising a lifting mechanism, the lifting mechanism being used for vertical lifting and lowering of the well-killing manifold;

[0006] A well-killing mechanism, which is used to control the wellhead pressure;

[0007] The well-killing mechanism is fixedly mounted on the lifting mechanism;

[0008] The well-killing mechanism includes a central-through mechanism, and a No. 1 throttling mechanism, a liquid injection member, and a No. 2 throttling mechanism are fixedly installed on the outer side of the central-through mechanism, wherein the No. 1 throttling mechanism and the No. 2 throttling mechanism are symmetrically arranged at both ends of the central-through mechanism;

[0009] The central-pass mechanism includes a four-way passage, a pressure gauge is fixedly installed on the top of the four-way passage, a two-way pipe is fixedly connected to the outside of the four-way passage, a debris removal component is arranged inside the two-way pipe, one end of the four-way passage away from the two-way pipe is fixedly connected to a throttling mechanism No. 1, the outside of the four-way passage is fixedly connected to a liquid injection piece, and the bottom of the four-way passage is fixedly connected to a liquid injection pipe.

[0010] Preferably, the lifting mechanism includes a gate plate, the top of which is fixedly connected to the No. 1 throttling mechanism, the injection piece and the injection pipe respectively, the bottom of the gate plate is fixedly connected to a lifting plate, the outer side of the lifting plate is slidingly adapted with a vertical rail, and the bottom of the vertical rail is fixedly connected to a bottom plate.

[0011] Preferably, a ramp block is inserted into the outer side of the lifting plate, and the outer side of the ramp block is extruded and fitted with the bottom of the lifting plate. An extruded material is arranged above the ramp block, and the bottom of the extruded material is extruded and fitted with the ramp block. A hydraulic cylinder is fixedly connected to the outer side of the extruded material, and the hydraulic cylinder is fixedly connected to the top of the base plate.

[0012] Preferably, the impurity removal component includes a layered plate, which is fixedly connected to the inner side of the double-pass pipe, and the outer side of the layered plate is respectively fixedly connected to a first filter screen and a second filter screen, and the second filter screen is arranged above the first filter screen, and the two ends of the layered plate are symmetrically connected with sticking plates, the inner side of the layered plate is fixedly connected to a ring seat, and the inner side of the ring seat is rotatably connected to a curved plate, and the inner side of the curved plate is fixedly connected to an elastic bar, and the end of the elastic bar away from the curved plate is fixedly connected to the inner side of the layered plate.

[0013] Preferably, the No. 2 throttling mechanism includes a throttling assembly, a pressure relief assembly is fixedly connected to the bottom of the throttling assembly, one end of the throttling assembly is fixedly connected to the two-way pipe, one end of the throttling assembly away from the two-way pipe is fixedly connected to an external pipe, both ends of the external pipe are symmetrically connected to shock-absorbing seats, and the shock-absorbing seats are fixedly connected to the top of the gate plate.

[0014] Preferably, the throttling assembly includes an internal threaded seat, the bottom of the internal threaded seat is fixedly connected to a transition seat, the internal thread of the internal threaded seat is connected to a threaded rod, the outer side of the threaded rod is fixedly connected to a turning handle, the bottom of the threaded rod is extruded and adapted with a bearing, the outer side of the bearing is fixedly connected to a throttle plate, the outer side of the throttle plate is slidably adapted with a flow tube, the bottom of the flow tube is fixedly connected to a bottom tube, one end of the flow tube is fixedly connected to a two-way tube, and the end of the flow tube away from the two-way tube is fixedly connected to an external tube.

[0015] Preferably, a load-bearing block is fixedly connected to the inside of the throttle plate, and the load-bearing block is slidably adapted with an insertion rod at one end away from the throttle plate. The top of the insertion rod is connected to an electric push rod via a turntable, wherein the turntable is rotatably connected to the insertion rod, and the turntable is fixedly connected to the electric push rod, and the electric push rod is fixedly connected to the top of the threaded rod.

[0016] Preferably, the bottom of the penetration rod is fixedly connected with a center plug plate, the outer side of the center plug plate is extruded and adapted with a throttling disk, the throttling disk is inserted on the outer side of the throttling plate, the top of the throttling disk is fixedly connected with a spring, and the spring is fixedly connected to the bottom of the load-bearing block.

[0017] Preferably, the outer side of the center plug plate is slidably connected to the load-bearing block, and the two ends of the center plug plate are symmetrically connected to end panels. The outer side of the end panel is extruded and adapted with a throttling strip, and the throttling strip is inserted into the outer side of the throttling plate, and the inner end of the throttling strip is fixedly connected to the throttling disk.

[0018] Preferably, the pressure relief assembly includes a connecting pipe, the top of the connecting pipe is fixedly connected to the bottom pipe, the bottom of the connecting pipe is fixedly connected to an inner seat, the inner seat is rotatably connected to a blocking plate, the outer side of the blocking plate is extruded and adapted with a leak-proof ring, the leak-proof ring is fixedly connected to the inner side of the connecting pipe, the bottom of the blocking plate is extruded and adapted with a limiting rod, the end of the limiting rod away from the blocking plate is slidably adapted with a cross rail, the cross rail is fixedly connected to the outer side of the connecting pipe, the end of the cross rail away from the connecting pipe is fixedly connected with a telescopic rod, and the movable end of the telescopic rod is fixedly connected to the limiting rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The contact surfaces between the inclined plane block and the lifting plate are both inclined planes, and then the lifting plate will move upward along the vertical rail. At the same time, the gate plate fixedly connected to the top of the lifting plate will rise with the entire well-killing mechanism, thereby playing the role of lifting and lowering the entire well-killing manifold.

[0021] 2. The impurities passing through the well fluid will be filtered by filter No. 1 and filter No. 2 respectively. When the well fluid has finished flowing and remains stationary, the curved plate will return to its original position through the elasticity of the elastic bars. The initial state of the curved plate is that its top is facing the direction of the stratified plate. Therefore, the impurities filtered by filter No. 2 will be caught by the curved plate and can no longer flow out through the well fluid, thereby filtering the impurities.

[0022] 3. The throttle strip is squeezed outward by the downward movement of the end panel, where the throttle strip is symmetrically connected to both ends of the throttle plate, and the contact surfaces between the throttle strip and the end panel are both inclined surfaces. Therefore, the throttle strip will also extend from the throttle plate and stick to the inner wall of the flow pipe, thereby playing a role in secondary throttling treatment of the well fluid.

[0023] 4. By manually contracting the telescopic rod, the limit rod connected to its movable end will move outward, and the plugging plate, which is no longer limited by the limit rod, will deflect downward through the inner seat. At this time, the throttle plate is slightly lifted upward, so that part of the well fluid will pass through the bottom pipe and the connecting pipe in turn and be discharged outward along the plugging plate, thereby relieving the pressure of the liquid in the well. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1The figure is a schematic diagram of the external structure of a vertically movable throttling and well-killing manifold according to the present invention.

[0025] Figure 2 It is a structural schematic diagram of the lifting mechanism of the present invention.

[0026] Figure 3 It is a schematic cross-sectional structural diagram of the lifting mechanism of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the well-killing mechanism of the present invention.

[0028] Figure 5 It is a structural schematic diagram of the through mechanism in the present invention.

[0029] Figure 6 It is a structural schematic diagram of the impurity removal component of the present invention.

[0030] Figure 7 It is a schematic cross-sectional structural diagram of the impurity removal component of the present invention.

[0031] Figure 8 It is a structural schematic diagram of the No. 2 throttling mechanism of the present invention.

[0032] Fig. 9 It is a structural schematic diagram of the throttling component of the present invention.

[0033] Fig.10 It is a schematic cross-sectional structural diagram of the throttling assembly of the present invention.

[0034] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at point A in the middle.

[0035] Fig.12 It is a schematic diagram of the longitudinal section structure of some components of the throttling assembly of the present invention.

[0036] Fig.13 It is a schematic cross-sectional structure diagram of some components of the throttling assembly of the present invention.

[0037] Fig.14 It is a schematic structural diagram of the pressure relief assembly of the present invention.

[0038] In the figure: 1, lifting mechanism; 2, well-killing mechanism; 11, gate; 12, lifting plate; 13, vertical rail; 14, bottom plate; 15, inclined block; 16, extruded material; 17, hydraulic cylinder; 21, middle-through mechanism; 22, No. 1 throttling mechanism; 23, injection piece; 24, No. 2 throttling mechanism; 211, four-way; 212, injection pipe; 213, two-way pipe; 214, impurity removal component; 215, pressure gauge; 2141, layered plate; 2142, No. 1 filter screen; 2143, No. 2 filter screen; 2144, sticking plate; 2145, ring seat; 2146, curved plate; 2147, spring bar; 241, throttling component; 242, pressure relief component; 243. shock-absorbing seat; 244. external pipe; 2411. internal thread seat; 2412. transition seat; 2413. threaded rod; 2414. turning handle; 2415. bearing; 2416. throttle plate; 2417. flow pipe; 2418. bottom pipe; 2410. load-bearing block; 4101. insertion rod; 4102. electric push rod; 4103. center plug plate; 4104. throttle disc; 4105. spring; 4106. end panel; 4107. throttle strip; 2421. connecting pipe; 2422. inner seat; 2423. blocking plate; 2424. leak-proof ring; 2425. limit rod; 2426. telescopic rod; 2427. cross rail. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 14 The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, it includes a lifting mechanism 1, which is used for vertical lifting of the well-killing manifold;

[0041] A well-killing mechanism 2, which is used to control the wellhead pressure;

[0042] The well-killing mechanism 2 is fixedly mounted on the lifting mechanism 1 .

[0043] The lifting mechanism 1 includes a gate plate 11, the top of which is fixedly connected to the No. 1 throttling mechanism 22, the injection piece 23 and the injection pipe 212 respectively, the bottom of the gate plate 11 is fixedly connected to the lifting plate 12, the outer side of the lifting plate 12 is slidably adapted with a vertical rail 13, the bottom of the vertical rail 13 is fixedly connected to the bottom of the bottom plate 14, the outer side of the lifting plate 12 is plugged with an inclined block 15, the outer side of the inclined block 15 is extruded and adapted with the bottom of the lifting plate 12, an extruded material 16 is arranged above the inclined block 15, the bottom of the extruded material 16 is extruded and adapted with the inclined block 15, the outer side of the extruded material 16 is fixedly connected to a hydraulic cylinder 17, and the hydraulic cylinder 17 is fixedly connected to the top of the bottom plate 14, By starting the hydraulic cylinder 17, the extruded material 16 connected to the movable end thereof will move downward, and then the extruded material 16 will extrude the inclined surface block 15, wherein the contact surfaces between the extruded material 16 and the inclined surface block 15 are both inclined surfaces, so that the inclined surface block 15 will be inserted into the interior of the vertical rail 13 and extrude the lifting plate 12, wherein the contact surfaces between the inclined surface block 15 and the lifting plate 12 are both inclined surfaces, and then the lifting plate 12 will move upward along the vertical rail 13, and at the same time, the gate plate 11 fixedly connected to the top of the lifting plate 12 will rise together with the entire well-killing mechanism 2, thereby playing the role of lifting and lowering the entire well-killing manifold.

[0044] At the same time, lifting and lowering are achieved through the extrusion between the inclined plane blocks 15. 1. It can withstand a large load; 2. Self-locking performance: in some cases, the structure of the inclined plane block 15 can provide a self-locking function to keep the lifting position stable when there is no external force; 3. Environmental adaptability: in harsh environments or dusty and impure working conditions, the extrusion method of the inclined plane block 15 is relatively less affected, and it is not easy to have problems such as thread jamming caused by impurities.

[0045] The well-killing mechanism 2 includes a centrally-through mechanism 21 , on the outer side of which a throttling mechanism 22 , a liquid injection member 23 and a throttling mechanism 24 are fixedly mounted, wherein the throttling mechanism 22 and the throttling mechanism 24 are symmetrically arranged at both ends of the centrally-through mechanism 21 .

[0046] The central passage mechanism 21 includes a cross-way 211, a pressure gauge 215 is fixedly installed on the top of the cross-way 211, a double-way pipe 213 is fixedly connected to the outside of the cross-way 211, and a debris removal component 214 is arranged inside the double-way pipe 213, wherein the number of the debris removal components 214 is six, and each three are grouped in a circular array, and are fixedly installed inside the double-way pipe 213, and the two groups of debris removal components 214 are staggered, so as to play the role of filtering and processing impurities in the well fluid to the maximum extent, and the cross-way 211 is away from One end of the two-way pipe 213 is fixedly connected to the No. 1 throttling mechanism 22, the outer side of the four-way 211 is fixedly connected to the injection piece 23, and the bottom of the four-way 211 is fixedly connected with the injection pipe 212, wherein the injection pipe 212 is fixedly installed at the bottom of the four-way 211 and is directly connected to the wellhead. The No. 1 throttling mechanism 22 and the No. 2 throttling mechanism 24 are symmetrically arranged at both ends of the four-way 211, and the injection piece 23 is also directly connected to the four-way 211, and its function is to inject drilling fluid into the wellhead to balance the pressure.

[0047] The impurity removal component 214 includes a layered plate 2141, which is fixedly connected to the inner side of the double-pass pipe 213, and the outer side of the layered plate 2141 is respectively fixedly connected with a first filter screen 2142 and a second filter screen 2143, and the second filter screen 2143 is arranged above the first filter screen 2142. The two ends of the layered plate 2141 are symmetrically connected with a sticker plate 2144, and the inner side of the layered plate 2141 is fixedly connected with a ring seat 2145, and the inner side of the ring seat 2145 is rotatably connected with a curved plate 2146, and the inner side of the curved plate 2146 is fixedly connected with an elastic bar 2147, and the end of the elastic bar 2147 away from the curved plate 2146 is fixedly connected to the inner side of the layered plate 2141. In addition, the outer side of the four-way 211 is respectively connected to the first throttling mechanism 22 and the second throttling mechanism 24 through the double-pass pipe 213, so when the well fluid passes through the injection pipe 2 When the liquid flows into the four-way pipe 211 and then enters the two-way pipe 213 from the four-way pipe 211, the well fluid will hit the layering plate 2141 and the curved plate 2146 respectively, and the curved plate 2146 hit will be deflected toward the layering plate 2141 through the ring seat 2145, and the impurities in the well fluid will be filtered by the No. 1 filter 2142 and the No. 2 filter 2143 respectively. When the well fluid has finished flowing and remains stationary, the curved plate 2146 will be restored to its original position through the elasticity of the elastic bar 2147, and the initial state of the curved plate 2146 is that its top is facing the direction of the layering plate 2141. Therefore, the impurities filtered by the No. 2 filter 2143 will be caught by the curved plate 2146 and cannot flow out through the well fluid, thereby filtering the impurities.

[0048] like Figure 8 , Fig. 9 , Fig.10 , Fig.11, Fig.12 , Fig.13 and Fig.14 As shown, the second throttling mechanism 24 includes a throttling component 241, the bottom of the throttling component 241 is fixedly connected to a pressure relief component 242, one end of the throttling component 241 is fixedly connected to the two-way tube 213, the end of the throttling component 241 away from the two-way tube 213 is fixedly connected to an external tube 244, both ends of the external tube 244 are symmetrically connected to shock-absorbing seats 243, and the shock-absorbing seats 243 are fixedly connected to the top of the gate 11.

[0049] The throttling assembly 241 includes an internal threaded seat 2411, the bottom of which is fixedly connected with a transition seat 2412, the internal threaded seat 2411 is connected with a threaded rod 2413, the outer side of the threaded rod 2413 is fixedly connected with a turning handle 2414, the bottom of the threaded rod 2413 is extruded with a bearing 2415, the outer side of the bearing 2415 is fixedly connected with a throttle plate 2416, wherein the throttle plate 2416 is in the shape of a hollow cylinder with hollow straight plates symmetrically connected on both sides of the cylinder, and a load-bearing block 2410 fixedly connected to the inside of the throttle plate 2416 serves to increase its stability, and the outer side of the throttle plate 2416 is slidably adapted with a flow tube 2417, and the bottom of the flow tube 2417 is fixedly connected There is a bottom tube 2418, one end of the circulation tube 2417 is fixedly connected to the two-way tube 213, and the end of the circulation tube 2417 away from the two-way tube 213 is fixedly connected to the external tube 244. By turning the handle 2414 clockwise, the threaded rod 2413 connected to the inner end will spirally move downward along the internal thread seat 2411, wherein the bottom of the threaded rod 2413 is connected to the throttle plate 2416 through the bearing 2415, so that the throttle plate 2416 will enter the interior of the circulation tube 2417 from the interior of the transition seat 2412, thereby realizing the effect of limiting the flow and blocking the circulation cavity of the circulation tube 2417, wherein the internal thread seat 2411, the transition seat 2412 and the circulation tube 2417 are connected in sequence from top to bottom. At the same time, the final destination of the well fluid is also the cavity of the circulation pipe 2417, and is throttled and limited by the throttle plate 2416. The throttle plate 2416 is fixedly connected with a load-bearing block 2410 inside, and the end of the load-bearing block 2410 away from the throttle plate 2416 is slidably adapted with an insertion rod 4101, and the top of the insertion rod 4101 is connected with an electric push rod 4102 through a turntable, wherein the turntable is rotatably connected to the insertion rod 4101, and the turntable is fixedly connected to the electric push rod 4102, and the electric push rod 4102 is fixedly connected to the top of the threaded rod 2413, and the bottom of the insertion rod 4101 is fixedly connected with a center plug plate 4103, and the outer side of the center plug plate 4103 is squeezed and adapted with a throttling disk 4104, and the throttling disk 4104 is inserted in On the outside of the throttle plate 2416, the top of the throttle disc 4104 is fixedly connected with a spring 4105, and the spring 4105 is fixedly connected to the bottom of the load-bearing block 2410. The outside of the central plug plate 4103 is slidably connected to the load-bearing block 2410, and the two ends of the central plug plate 4103 are symmetrically connected with end panels 4106. The outer side of the end panel 4106 is squeezed and adapted with a throttle strip 4107, and the throttle strip 4107 is inserted into the outer side of the throttle plate 2416. The inner end of the throttle strip 4107 is fixedly connected to the throttle disc 4104. Then, the electric push rod 4102 is started again, so that the turntable connected thereto will move downward, and the inserted rod 4101, which is rotatably connected to the bottom center of the turntable, will move downward along the inner wall of the threaded rod 2413.The center plug plate 4103 fixedly connected to the bottom of the penetration rod 4101 will move downward and squeeze the throttle disc 4104, wherein the contact surfaces between the center plug plate 4103 and the throttle disc 4104 are both inclined surfaces, so the throttle disc 4104 will extend from the inside of the throttle plate 2416 and stick to the inner wall of the circulation tube 2417, and at the same time, the end panels 4106 symmetrically connected to the two ends of the center plug plate 4103 will also move downward, and then the end panels 4106 will move downward and squeeze the throttle strip 4107 outward, wherein the throttle strip 4107 is symmetrically connected to the two ends of the throttle disc 4104, and the contact surfaces between the throttle strip 4107 and the end panels 4106 are both inclined surfaces, so the throttle strip 4107 will also extend from the throttle plate 2416 and stick to the inner wall of the circulation tube 2417, thereby playing a role in secondary throttling treatment of the fluid in the well.

[0050] The throttle disc 4104 and the throttle strip 4107 extend outward from the throttle plate 2416 and are in close contact with the flow tube 2417. The purpose is to prevent the throttle plate 2416 from rubbing against the flow tube 2417 and causing wear during the long-term flow limiting treatment of the flow tube 2417, thereby affecting the throttling effect and sealing performance. In addition, sometimes the surface of the throttle plate 2416 may be stuck due to dirt, foreign matter or deformation of components, resulting in its inability to regulate the flow normally. Therefore, the throttle disc 4104 and the throttle strip 4107 are extended to prepare for sealing the easily worn parts of the throttle plate 2416.

[0051] The pressure relief assembly 242 includes a connecting tube 2421, the top of which is fixedly connected to the bottom tube 2418, the bottom of which is fixedly connected to an inner seat 2422, the inner seat 2422 is rotatably connected to a blocking plate 2423, the outer side of the blocking plate 2423 is extruded and adapted with a leak-proof ring 2424, the leak-proof ring 2424 is fixedly connected to the inner side of the connecting tube 2421, the bottom of the blocking plate 2423 is extruded and adapted with a limiting rod 2425, the end of the limiting rod 2425 away from the blocking plate 2423 is slidably adapted with a cross rail 2427, the cross rail 2427 is fixedly connected to the outer side of the connecting tube 2421, the end of the cross rail 2427 away from the connecting tube 2421 is fixedly connected with a telescopic rod 2426, and the movable end of the telescopic rod 2426 is fixedly connected to the limiting rod 2425. By manually contracting the telescopic rod 2426, the limiting rod 2425 connected to its movable end will move outward, and the blocking plate 2423, which is no longer limited by the limiting rod 2425, will be deflected downward through the inner seat 2422. At this time, the throttle plate 2416 is slightly lifted upward, so that part of the well fluid will pass through the bottom pipe 2418 and the connecting pipe 2421 in turn and be discharged outward along the blocking plate 2423, thereby relieving the pressure of the liquid in the well.

[0052] When it is not necessary to perform well pressure treatment on the wellhead, all equipment is reset, and then clean water is connected from the external pipe 244. At this time, the clean water will be fully cleaned through the external pipe 244, the flow pipe 2417 and the two-way pipe 213 in sequence. In addition, during the cleaning process of the No. 1 filter 2142 and the No. 2 filter 2143, because the water flow and impurities are on both sides of the filter, the water flow will pass through the filter and carry away the impurities for treatment. At the same time, the curved plate 2146 hit by the water flow will be deflected outward through the ring seat 2145, which is convenient for the water flow to carry away the impurities for treatment.

[0053] When the present invention is in use: first, the hydraulic cylinder 17 is started, so that the extruded material 16 connected to the movable end thereof will move downward, and then the extruded material 16 will squeeze the inclined surface block 15, so that the inclined surface block 15 will be inserted into the interior of the vertical rail 13 and squeeze the lifting plate 12, and then the lifting plate 12 will move upward along the vertical rail 13, and at the same time, the gate plate 11 fixedly connected to the top of the lifting plate 12 will rise together with the entire well-killing mechanism 2.

[0054] The injection pipe 212 is fixedly installed at the bottom of the four-way pipe 211 and is directly connected to the wellhead. The No. 1 throttling mechanism 22 and the No. 2 throttling mechanism 24 are symmetrically arranged at both ends of the four-way pipe 211. The injection part 23 injects the drilling fluid into the wellhead for pressure balance. The outer side of the four-way pipe 211 is connected to the No. 1 throttling mechanism 22 and the No. 2 throttling mechanism 24 respectively through the two-way pipe 213. Therefore, when the well fluid flows into the four-way pipe 211 through the injection pipe 212 and then enters the inside of the two-way pipe 213 from the four-way pipe 211, the well fluid will hit the layering plate 2141 and the curved plate 2146 respectively. The impacted curved plate 2146 will be deflected toward the layering plate 2141 through the ring seat 2145. At this time, the impurities in the well fluid will be filtered by the No. 1 filter 2142 and the No. 2 filter 2143 respectively.

[0055] By turning the handle 2414 clockwise, the threaded rod 2413 connected to the inner end will spirally move downward along the internal threaded seat 2411, wherein the bottom of the threaded rod 2413 is connected to the throttle plate 2416 through the bearing 2415, so that the throttle plate 2416 will enter the interior of the flow tube 2417 from the interior of the transition seat 2412, thereby realizing the flow limiting and blocking treatment of the flow tube 2417.

[0056] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A vertically movable throttling and well-killing manifold, characterized in that: include: A lifting mechanism (1), the lifting mechanism (1) is used for vertical lifting of a well-killing manifold; A well-killing mechanism (2), the well-killing mechanism (2) being used for controlling the wellhead pressure; The well-killing mechanism (2) is fixedly mounted on the lifting mechanism (1); The well-killing mechanism (2) comprises a central passage mechanism (21), and a first throttling mechanism (22), a liquid injection member (23), and a second throttling mechanism (24) are respectively fixedly mounted on the outer side of the central passage mechanism (21), wherein the first throttling mechanism (22) and the second throttling mechanism (24) are symmetrically arranged at two ends of the central passage mechanism (21); The central passage mechanism (21) comprises a four-way passage (211), a pressure gauge (215) is fixedly mounted on the top of the four-way passage (211), a two-way pipe (213) is fixedly connected to the outside of the four-way passage (211), a debris removal component (214) is arranged inside the two-way pipe (213), one end of the four-way passage (211) away from the two-way pipe (213) is fixedly connected to a first throttling mechanism (22), the outside of the four-way passage (211) is fixedly connected to a liquid injection piece (23), and the bottom of the four-way passage (211) is fixedly connected to a liquid injection pipe (212); The lifting mechanism (1) comprises a gate plate (11), the top of the gate plate (11) being fixedly connected to a No. 1 throttling mechanism (22), a liquid injection member (23) and a liquid injection pipe (212), respectively; the bottom of the gate plate (11) being fixedly connected to a lifting plate (12); the outer side of the lifting plate (12) being slidably adapted to be provided with a vertical rail (13); the bottom of the vertical rail (13) being fixedly connected to a bottom plate (14); The outer side of the lifting plate (12) is plugged with an inclined surface block (15), the outer side of the inclined surface block (15) is extruded and fitted with the bottom of the lifting plate (12), an extruded material (16) is arranged above the inclined surface block (15), the bottom of the extruded material (16) is extruded and fitted with the inclined surface block (15), the outer side of the extruded material (16) is fixedly connected with a hydraulic cylinder (17), and the hydraulic cylinder (17) is fixedly connected to the top of the bottom plate (14); The impurity removal component (214) comprises a layered plate (2141), the layered plate (2141) being fixedly connected to the inner side of the double-pass pipe (213), the outer side of the layered plate (2141) being respectively fixedly connected to a first filter screen (2142) and a second filter screen (2143), the second filter screen (2143) being arranged above the first filter screen (2142), the two ends of the layered plate (2141) being symmetrically connected to a pasting plate (2144), the inner side of the layered plate (2141) being fixedly connected to a ring seat (2145), the inner side of the ring seat (2145) being rotatably connected to a curved plate (2146), the inner side of the curved plate (2146) being fixedly connected to an elastic bar (2147), and one end of the elastic bar (2147) away from the curved plate (2146) being fixedly connected to the inner side of the layered plate (2141).

2. A vertically movable throttling and killing manifold according to claim 1, characterized in that: The second throttling mechanism (24) comprises a throttling component (241), the bottom of the throttling component (241) is fixedly connected to a pressure relief component (242), one end of the throttling component (241) is fixedly connected to a two-way pipe (213), one end of the throttling component (241) away from the two-way pipe (213) is fixedly connected to an external pipe (244), both ends of the external pipe (244) are symmetrically connected to shock-absorbing seats (243), and the shock-absorbing seats (243) are fixedly connected to the top of the gate plate (11).

3. A vertically movable throttling and killing manifold according to claim 2, characterized in that: The throttling assembly (241) comprises an internal threaded seat (2411), the bottom of the internal threaded seat (2411) is fixedly connected to a transition seat (2412), the internal threads of the internal threaded seat (2411) are connected to a threaded rod (2413), the outer side of the threaded rod (2413) is fixedly connected to a turning handle (2414), the bottom of the threaded rod (2413) is extruded with a bearing (2415), the outer side of the bearing (2415) is fixedly connected to a throttle plate (2416), the outer side of the throttle plate (2416) is slidably connected to a flow tube (2417), the bottom of the flow tube (2417) is fixedly connected to a bottom tube (2418), one end of the flow tube (2417) is fixedly connected to a two-way tube (213), and one end of the flow tube (2417) away from the two-way tube (213) is fixedly connected to an external tube (244).

4. A vertically movable throttling and killing manifold according to claim 3, characterized in that: A load-bearing block (2410) is fixedly connected inside the throttle plate (2416), and an end of the load-bearing block (2410) away from the throttle plate (2416) is slidably adapted to be fitted with an insertion rod (4101), and the top of the insertion rod (4101) is connected to an electric push rod (4102) via a turntable, wherein the turntable is rotationally connected to the insertion rod (4101), and the turntable is fixedly connected to the electric push rod (4102), and the electric push rod (4102) is fixedly connected to the top of the threaded rod (2413).

5. A vertically movable throttling and killing manifold according to claim 4, characterized in that: The bottom of the insertion rod (4101) is fixedly connected to a center plug plate (4103), the outer side of the center plug plate (4103) is extruded and adapted with a throttle disc (4104), the throttle disc (4104) is inserted on the outer side of the throttle plate (2416), the top of the throttle disc (4104) is fixedly connected to a spring (4105), and the spring (4105) is fixedly connected to the bottom of the load-bearing block (2410).

6. A vertically movable throttling and killing manifold according to claim 5, characterized in that: The outer side of the center plug plate (4103) is slidably connected to the load-bearing block (2410), and the two ends of the center plug plate (4103) are symmetrically connected to the end panels (4106). The outer side of the end panel (4106) is extruded and adapted with a throttling strip (4107), and the throttling strip (4107) is inserted into the outer side of the throttling plate (2416), and the inner end of the throttling strip (4107) is fixedly connected to the throttling disk (4104).

7. The vertically movable throttling and killing manifold according to claim 2, characterized in that: The pressure relief assembly (242) comprises a connecting pipe (2421), the top of the connecting pipe (2421) is fixedly connected to the bottom pipe (2418), the bottom of the connecting pipe (2421) is fixedly connected to an inner seat (2422), the inner portion of the inner seat (2422) is rotatably connected to a blocking plate (2423), the outer side of the blocking plate (2423) is extruded and adapted to be provided with a leak-proof ring (2424), and the leak-proof ring (2424) is fixedly connected to the inner side of the connecting pipe (2421). The bottom of the blocking plate (2423) is extruded and adapted to a limit rod (2425); one end of the limit rod (2425) away from the blocking plate (2423) is slidably adapted to be equipped with a cross rail (2427); the cross rail (2427) is fixedly connected to the outside of the connecting tube (2421); one end of the cross rail (2427) away from the connecting tube (2421) is fixedly connected to a telescopic rod (2426); the movable end of the telescopic rod (2426) is fixedly connected to the limit rod (2425).

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