Ground control underground Y-shaped oil extraction and test integrated tool

Abstract

The utility model discloses a ground control underground Y-shaped oil extraction and test integrated tool. Comprising a Y-shaped tee joint of a Y-shaped structure, and the lower end of the Y-shaped tee joint is connected with an electric pump short section and a tee joint. The upper connector, the connecting cylinder, the hydraulic cylinder, the spring cylinder and the lower connector are sequentially connected to the lower end of the three-way connector from top to bottom. The central pipe is axially and movably arranged in inner cavities at the upper parts of the upper joint, the connecting cylinder, the hydraulic cylinder and the spring cylinder; the upper part of the movable sleeve is connected with the lower part of the central pipe; the spring is arranged in the spring barrel; the overflowing channel and the hydraulic cavity are arranged on the cylinder wall of the hydraulic cylinder in parallel with the axis; the piston assembly is arranged in the hydraulic cavity; and the valve plate seat assembly is connected with the upper part of the connecting cylinder. The utility model has the beneficial effects that the opening or closing of the pipe cavity of the central pipe can be controlled through the hydraulic control pipeline, the blanking plug does not need to be thrown and fished by a steel wire, and liquid production and testing can be selectively carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil production well technical field, especially in a kind of ground control downhole Y type oil production test integration tool. BACKGROUND

[0002] Y joint separate production, production pipe column design is the most commonly used completion technology in sea currently.Y joint lower one end connects ESP electric submersible pump, one end is connected with separate production, production pipe column.When needing production, Y joint lower side connected with separate production, production pipe column needs to put in matched plug to prevent backflow for the ESP packer of upper portion to be seat-sealed.When well deviation is relatively large (more than 55 degrees) or well bottom pressure is relatively high (flowing well), when needing to use wire fish plug, often encounter difficulty, seriously affect operation failure.Well with serious wax deposition also has the problem of wire fish plug.

[0003] In order to reduce the workload of wire operation, especially for the oil well of high deviation or high viscosity heavy oil development limited to carry out wire operation, a ground control downhole Y type oil production test integration tool without plug fishing is needed, which cancels wire plug fishing operation, and opens production and test channel by remote hydraulic control, to ensure separate layer production effect. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of ground control downhole Y type oil production test integration tools, which can be opened or closed by hydraulic control pipeline control center tube lumen, without wire plug fishing, and can selectively carry out production and test.

[0005] To achieve the above object, the utility model adopts the following technical scheme, including Y type tee of Y type structure, the Y type tee upper end is connected with tubing nipple, the Y type tee lower end is connected with electric pump nipple and tee joint respectively, and electric pump assembly is connected in electric pump nipple lower end;Including:

[0006] Upper joint, connecting barrel, hydraulic cylinder, spring cylinder and lower joint are sequentially connected in tee joint lower end from top to bottom;

[0007] Center tube is movably arranged in the inner cavity of the upper joint, connecting barrel, hydraulic cylinder and the upper portion of the spring cylinder;

[0008] Moving sleeve is arranged in the inner cavity of the lower portion of the spring cylinder, and the upper portion of the moving sleeve is connected with the lower portion of the center tube;

[0009] Spring is arranged in the spring cylinder, and is sleeved on the outer periphery of the moving sleeve;The upper end of the spring is in abutment with the center tube, and the lower end is in abutment with the lower joint, for providing restoring force, so that the center tube moves up;

[0010] a through-flow channel and a hydraulic cavity, which are arranged in parallel with the axis on the cylinder wall of the hydraulic cylinder; the upper end of the through-flow channel is connected with the hydraulic control pipeline, and the lower end of the through-flow channel is communicated with the hydraulic cavity;

[0011] a piston assembly, which is arranged in the hydraulic cavity, and the lower end of the piston assembly is clamped with the lower end of the central pipe; the piston assembly is used to drive the central pipe to move downward when the hydraulic control pipeline is pressed;

[0012] a valve plate seat assembly, which is connected with the upper part of the connecting cylinder; the valve plate of the valve plate seat assembly is used to close the lumen of the central pipe after the central pipe moves downward, and open the lumen of the central pipe after the central pipe moves upward.

[0013] Preferably, the valve plate seat assembly comprises:

[0014] a valve seat, which is sleeved on the upper part of the central pipe and connected with the inner wall of the connecting cylinder;

[0015] a valve plate, which is hinged with the valve seat through a valve plate pin, and used to buckle with the valve seat to open or close the lumen of the central pipe;

[0016] a torsional spring, which is sleeved on the valve plate pin and used to drive the valve plate to buckle with the valve seat;

[0017] a through hole, which is arranged eccentrically on the valve plate;

[0018] a balance plug, which is arranged in the through hole, and the lower edge of the balance plug protrudes from the lower end surface of the valve plate; the balance plug is used to contact with the upper end of the central pipe when the central pipe moves upward, so as to facilitate the central pipe to flip the valve plate open;

[0019] a flat spring, the base of which is arranged on the upper end surface of the valve plate, and the free end of which is connected with the balance plug, and used to fix the balance plug on the valve plate.

[0020] Preferably, the piston assembly comprises:

[0021] a sealing rod, the outer wall of the middle part of which is matched with the inner wall of the hydraulic cavity, and an upper connecting rod and a lower connecting rod are arranged on the upper part and the lower part of the sealing rod respectively;

[0022] a V-shaped sealing assembly, which is sleeved on the base of the upper connecting rod and the lower connecting rod respectively;

[0023] a piston cap, which is sleeved on the free end of the upper connecting rod;

[0024] a piston rod, the upper end of which is connected with the free end of the lower connecting rod;

[0025] a U-shaped clamping groove, which is arranged at the end of the piston rod;

[0026] A snap ring is arranged at the rear of the center tube and is matched with the U-shaped snap groove, so as to realize the snap connection of the piston rod and the center tube.

[0027] Preferably, the application further comprises:

[0028] A righting sleeve is sleeved at the rear of the piston rod and is located at the inner periphery of the end of the hydraulic cavity, so as to right the piston rod;

[0029] An extension sleeve is sleeved at the rear of the piston rod and abuts against the hydraulic cylinder and the center tube at both ends.

[0030] Preferably, the upper joint, the connecting cylinder, the hydraulic cylinder, the spring cylinder and the lower joint are connected by threads respectively; the center tube and the moving sleeve are connected by threads; an O-shaped sealing ring groove is arranged at the outer periphery of the valve seat; an O-shaped sealing ring groove is arranged at the outer periphery of the middle part of the connecting cylinder; an O-shaped sealing ring groove is arranged at the outer periphery of the upper part of the hydraulic cylinder; an O-shaped sealing ring groove is arranged at the outer periphery of the lower part of the hydraulic cylinder; an O-shaped sealing ring groove is arranged at the outer periphery of the upper part of the lower joint; O-shaped sealing rings are arranged in the O-shaped sealing ring grooves respectively; anti-rotation pins are arranged between the upper joint, the connecting cylinder, the hydraulic cylinder, the spring cylinder and the lower joint respectively; anti-rotation pins are arranged between the center tube and the moving sleeve.

[0031] Preferably, radial flow holes are arranged on the moving sleeve.

[0032] Preferably, a limiting step matched with the lower end of the moving sleeve is arranged in the lower joint; through grooves are symmetrically arranged at both sides of the Y-shaped three-way joint.

[0033] Preferably, a plurality of angle adjustment grooves are arranged at the outer periphery of the connecting cylinder, and an equal number of angle adjustment holes are arranged on the upper joint at positions corresponding to the angle adjustment grooves; an anti-rotation pin passes through any angle adjustment hole and selectively abuts against any angle adjustment groove at the lower end.

[0034] Preferably, the application further comprises:

[0035] A protection ring and a fixing ring are respectively in the shape of a half cylinder and are oppositely buckled and sleeved at the outer periphery of the front of the hydraulic cylinder and abut against the lower end of the connecting cylinder and the middle part of the hydraulic cylinder at the upper and lower ends respectively; a plurality of step holes are arranged at the side edges of the protection ring, and an equal number of threaded holes are arranged on the fixing ring at positions corresponding to the step holes; a fixing pin is screwed into the threaded hole after passing through the step hole, so as to connect the protection ring and the fixing ring;

[0036] The rectangular groove is arranged at the upper end of the protection ring, the inner periphery of the middle and lower part of the protection ring is sequentially provided with a second step groove and a first step groove from top to bottom, and a pipeline joint for communicating with the overflow channel is arranged in the first step groove; the hydraulic control pipeline sequentially passes through the rectangular groove and the second step groove and enters the first step groove to be connected with the pipeline joint; and a circular chamfer for preventing the hydraulic control pipeline from being knocked is arranged at the lower end of the first step groove.

[0037] Preferably, a fixing groove is arranged at the lower part of the fixing ring, a threaded hole corresponding to the fixing groove is arranged on the hydraulic cylinder, and after a fixing pin is screwed into the threaded hole of the hydraulic cylinder, a pin cap of the fixing pin is located in the fixing groove, so that relative rotation between the fixing ring and the hydraulic cylinder is prevented and the hydraulic pipeline is prevented from being damaged.

[0038] The utility model discloses the beneficial effects are as follows: the opening or closure of the central tube lumen can be controlled through the hydraulic control pipeline, the plugger need not be fished by steel wire, and liquid production and testing can be selectively carried out. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a perspective view of the utility model one ground control downhole Y type oil production test integrated tool.

[0040] Figure 2 It is the upper view of the upper joint, the connecting cylinder, the hydraulic cylinder, the spring cylinder and the lower joint in the utility model.

[0041] Figure 3 It is the A-A section view (valve plate opening state) of Figure 2 .

[0042] Figure 4 It is the A-A section view (valve plate closing state) of Figure 2 .

[0043] Figure 5 It is the perspective view of the upper joint in the utility model.

[0044] Figure 6 It is the perspective view of the connecting cylinder in the utility model.

[0045] Figure 7 It is the section view of the hydraulic cylinder in the utility model.

[0046] Figure 8 It is the perspective view of the protection ring in the utility model.

[0047] Figure 9 It is the perspective view of the fixing ring in the utility model.

[0048] Figure 10The utility model discloses a sectional view of the mobile sleeve, spring and lower joint.

[0049] Figure 11 The utility model discloses a perspective view of the center tube.

[0050] Figure 12 The utility model discloses a sectional view of the piston assembly.

[0051] Figure 13 The utility model discloses a perspective view of the valve plate seat assembly. DETAILED DESCRIPTION

[0052] The utility model will be further explained in detail in connection with the drawings, so that the person skilled in the art can implement according to the description text.

[0053] It should be understood that the terms such as "have", "contain" and "include" used in this paper do not exclude the presence or addition of one or other elements or their combinations.

[0054] As Figures 1-13 The utility model discloses a ground control downhole Y type oil production test integrated tool 1, including the Y type tee joint 200 of Y type structure, the Y type tee joint 200 upper end with the connection 300 of oil pipe nipple, the lower end of Y type tee joint 200 is connected with electric pump nipple 400 and tee joint 500 respectively, and electric pump assembly 410 is connected to the lower end of electric pump nipple 400, including:

[0055] The upper joint 110, the connecting barrel 120, the hydraulic cylinder 130, the spring cylinder 140 and the lower joint 150 are sequentially connected to the lower end of the tee joint 500 from top to bottom.

[0056] The center tube 160 is movably arranged in the inner cavity of the upper joint 110, the connecting barrel 120, the hydraulic cylinder 130 and the upper part of the spring cylinder 140.

[0057] The mobile sleeve 170 is arranged in the inner cavity of the lower part of the spring cylinder 140, and the upper part of the mobile sleeve 170 is connected with the lower part of the center tube 160.

[0058] The spring 141 is arranged in the spring cylinder 140 and sleeved on the outer periphery of the mobile sleeve 170, and the upper end of the spring 141 abuts with the center tube 160, and the lower end abuts with the lower joint 150, so as to provide a restoring force to move the center tube 160 upward.

[0059] The flow passage 131 and the hydraulic cavity 132 are arranged on the cylinder wall of the hydraulic cylinder 130 in parallel with the axis, and the upper end of the flow passage 131 is connected with the hydraulic control pipeline 600, and the lower end of the flow passage 131 is communicated with the hydraulic cavity 132.

[0060] A piston assembly 133 is arranged in the hydraulic chamber 132, and the lower end of the piston assembly 133 is connected to the lower end of the center tube 160. The piston assembly 133 is used to drive the center tube 160 downward when the hydraulic control line 600 is pressed. As a preferred embodiment, the piston assembly 133 comprises a sealing rod 133a, the middle outer circumference of which is matched with the inner circumference of the hydraulic chamber 132. An upper connecting rod and a lower connecting rod are arranged on the upper part and the lower part of the sealing rod 133a respectively. A V-shaped sealing assembly 133b is arranged on the base of the upper connecting rod and the lower connecting rod respectively. A piston cap 133c is arranged on the free end of the upper connecting rod. A piston rod 133d is connected to the free end of the lower connecting rod. A U-shaped clamping groove 133e is arranged at the end of the piston rod 133d. A clamping ring 161 is arranged at the rear part of the center tube 160, and is matched with the U-shaped clamping groove 133e, so as to realize the clamping of the piston rod 133d and the center tube 160. As a further preferred embodiment, a centralizing sleeve 133f is arranged at the rear part of the piston rod 133d, and is located at the inner circumference of the end of the hydraulic chamber 132, so as to centralize the piston rod 133d. An extension sleeve 133g is arranged at the rear part of the piston rod 133d, and is in abutment with the hydraulic cylinder 130 and the center tube 160 respectively.

[0061] A valve plate seat assembly 180 is connected to the upper part of the connecting cylinder 120. A valve plate 182 of the valve plate seat assembly 180 is used to close the lumen of the center tube 160 after the center tube 160 moves downward, and is used to open the lumen of the center tube 160 after the center tube 160 moves upward. As a preferred embodiment, the valve plate seat assembly 180 comprises a valve seat 181, which is arranged on the upper part of the center tube 160, and is connected to the inner circumference of the connecting cylinder 120. The valve plate 182 is hinged to the valve seat 181 through a valve plate pin, and is used to be buckled with the valve seat 181, so as to open or close the lumen of the center tube 160. A torsional spring 183 is arranged on the valve plate pin, and is used to drive the valve plate to be buckled with the valve seat. A through hole is arranged eccentrically on the valve plate 182. A balance plug 184 is arranged in the through hole, and the lower edge of the balance plug 184 protrudes from the lower end surface of the valve plate 181. The balance plug 184 is used to be in contact with the upper end of the center tube 160 when the center tube 160 moves upward, so as to facilitate the center tube 160 to flip the valve plate 182 to be opened. A flat spring 185 is arranged on the upper end surface of the valve plate 182, and the free end of the flat spring 185 is connected to the balance plug 184, so as to fix the balance plug 184 on the valve plate 182.

[0062] In use, the lower joint 150 is connected to the production tubing, and the whole string is lowered into place; during production, hydraulic pressure is applied to the hydraulic control line 600 on the ground, pushing the central tube 160 and the moving sleeve 170 downward, and compressing the spring 141, and when the valve plate 182 is no longer constrained by the central tube 160, the valve plate 182 is closed under the action of the torsional spring 183, at this time, the well fluid is lifted to the wellhead through the electric pump unit 410 in turn through the electric pump short section 400, the Y-shaped tee 200 and the tubing short section 300. When downhole testing is required, the hydraulic pressure of the hydraulic control line 600 is removed on the ground, the spring 141 rebounds, pushing the central tube 160 and the moving sleeve 170 upward, the central tube 160 exerts a pushing force on the valve plate 182 to open it, and the lumen of the central tube 160 is opened, and the testing tool string is lowered from the wellhead to test the downhole working conditions in terms of pressure and temperature.

[0063] In another embodiment, the valve plate seat assembly 180 comprises: a valve seat 181, which is sleeved on the upper part of the central tube 160 and connected with the inner wall of the connecting cylinder 120; a valve plate 182, which is hinged to the valve seat 181 by a valve plate pin, used to engage with the valve seat 181 to open or close the lumen of the central tube 160; a torsional spring 183, which is sleeved on the valve plate pin, used to drive the valve plate to engage with the valve seat; a through hole, which is eccentrically arranged on the valve plate 182; a balance plug 184, which is arranged in the through hole, the lower edge of the balance plug 184 protrudes from the lower end surface of the valve plate 181, and the balance plug 184 is used to contact the upper end of the central tube 160 when the central tube moves upward, thereby facilitating the central tube 160 to flip open the valve plate 182; a flat spring 185, which is arranged on the upper end surface of the valve plate 182 with its free end connected with the balance plug 184, used to fix the balance plug 184 on the valve plate 182.

[0064] In another embodiment, the piston assembly 133 comprises: a sealing rod 133a, the outer wall of which is matched with the inner wall of the hydraulic chamber 132, and an upper connecting rod and a lower connecting rod are arranged on the upper part and the lower part of the sealing rod 133a respectively; a V-shaped sealing assembly 133b, which is sleeved on the base of the upper connecting rod and the lower connecting rod respectively; a piston cap 133c, which is sleeved on the free end of the upper connecting rod; a piston rod 133d, whose upper end is connected with the free end of the lower connecting rod; a U-shaped clamping groove 133e, which is arranged at the end of the piston rod 133d; and a clamping ring 161, which is arranged at the rear of the central tube 160 and matched with the U-shaped clamping groove 133e, used to realize the clamping of the piston rod 133d and the central tube 160.

[0065] In another embodiment, it further comprises a righting sleeve 133f, which is sleeved at the rear of the piston rod 133d and located at the inner periphery of the end of the hydraulic chamber 132, for righting the piston rod 133d; and an extension sleeve 133g, which is sleeved at the rear of the piston rod 133d and abuts against the hydraulic cylinder 130 and the center tube 160 at both ends.

[0066] In another embodiment, the upper joint 110, the connecting cylinder 120, the hydraulic cylinder 130, the spring cylinder 140 and the lower joint 150 are connected by threads respectively; the center tube 160 and the moving sleeve 170 are connected by threads; an O-ring groove is arranged on the outer periphery of the valve seat 181; an O-ring groove is arranged on the outer periphery of the middle part of the connecting cylinder 120; an O-ring groove is arranged on the outer periphery of the upper part of the hydraulic cylinder 130; an O-ring groove is arranged on the outer periphery of the lower part of the hydraulic cylinder 130; an O-ring groove is arranged on the outer periphery of the upper part of the lower joint 150; an O-ring 191 is arranged in each of the O-ring grooves; an anti-rotation pin 192 is arranged between the upper joint 110, the connecting cylinder 120, the hydraulic cylinder 130, the spring cylinder 140 and the lower joint 150 respectively; and an anti-rotation pin 192 is arranged between the center tube 160 and the moving sleeve 170.

[0067] In another embodiment, a radial flow hole 171 is arranged on the moving sleeve 170. The flow hole 171 is used to balance the hydraulic pressure inside and outside the moving sleeve 170, so as to avoid the liquid around the spring 141 being squeezed in the closed space and causing the pressure to rise and prevent the spring 141 from being freely compressed.

[0068] In another embodiment, a limiting step 151 is arranged inside the lower joint 150 and matched with the lower end of the moving sleeve 170; and a through groove 210 is symmetrically arranged on both sides of the Y-shaped tee joint 200.

[0069] In another embodiment, a plurality of angle adjusting grooves 121 are arranged on the outer periphery of the connecting cylinder 120, and an equal number of angle adjusting holes 111 are arranged on the upper joint 110 at positions corresponding to the angle adjusting grooves; the anti-rotation pin 192 passes through any angle adjusting hole 111 and the lower end thereof is selectively abutted against any angle adjusting groove 121. When the hydraulic control pipeline 600 cannot pass through the through groove 210 of the Y-shaped tee joint 200 after the connecting cylinder 130 is connected with the connecting cylinder 120 by threads, the anti-rotation pin 192 on the connecting cylinder 120 is loosened first, so that the lower end of the anti-rotation pin 192 is separated from the angle adjusting groove 121; then the connecting cylinder 130 is rotated, so that the hydraulic control pipeline 600 passes through the through groove 210 of the Y-shaped tee joint 200; and then the anti-rotation pin 192 is screwed, so that the lower end thereof is abutted against the appropriate angle adjusting groove 121. Thus, the hydraulic control pipeline is prevented from being damaged.

[0070] In another embodiment, further comprising: a protection ring 134 and a fixing ring 135, which are respectively half-cylindrical, and are oppositely buckled and sleeved on the outer periphery of the front part of the hydraulic cylinder 130, and the upper and lower ends thereof are respectively abutted with the lower end of the connecting cylinder 120 and the middle part of the hydraulic cylinder 130; a plurality of stepped holes 134a are arranged on the side edge of the protection ring 134, and a same number of threaded holes 135a are arranged on the fixing ring 135 at positions corresponding to the stepped holes 134a; the protection ring 134 and the fixing ring 135 are connected by fixing pins which are screwed into the threaded holes after passing through the stepped holes 134a; wherein a rectangular groove 134b is arranged on the upper end of the protection ring 134, and a second-stage stepped groove 134c and a first-stage stepped groove 134d are sequentially arranged on the inner periphery of the middle and lower part of the protection ring 134 from top to bottom, and a pipeline joint 136 for communicating with the overflow channel is arranged in the first-stage stepped groove 134d; the hydraulic control pipeline 600 sequentially passes through the rectangular groove 134b and the second-stage stepped groove 134c, and enters the first-stage stepped groove 134d to be connected with the pipeline joint 136; and a circular chamfer for preventing the hydraulic control pipeline from being knocked is arranged at the lower end of the first-stage stepped groove 134d.

[0071] In another embodiment, a fixing groove 135b is arranged on the lower part of the fixing ring 135, and a threaded hole corresponding to the fixing groove 135b is arranged on the hydraulic cylinder 130, and after a fixing pin 137 is screwed into the threaded hole of the hydraulic cylinder 130, the pin cap of the fixing pin 137 is located in the fixing groove 135b, so as to prevent the hydraulic pipeline 600 from being damaged due to relative rotation between the fixing ring 135 and the hydraulic cylinder 130.

[0072] In summary, the ground-controlled downhole Y-shaped oil production and testing integrated tool 1 can control the opening or closing of the lumen of the central pipe 160 through the hydraulic control pipeline 600, does not need to use a wire to fish for the plug, and can selectively produce liquid and test.

[0073] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications and embodiments listed in the specification, and can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A downhole Y-type production testing integrated tool for ground control, comprising a Y-type tee joint in a Y-type structure, an upper end of the Y-type tee joint being connected with a tubing nipple, a lower end of the Y-type tee joint being connected with an electric pump nipple and a tee joint respectively, and an electric pump assembly being connected at a lower end of the electric pump nipple; characterized in that, The application relates to a three-way valve, which comprises the following components: an upper joint, a connecting cylinder, a hydraulic cylinder, a spring cylinder and a lower joint, which are sequentially connected from top to bottom at the lower end of the three-way joint; a central pipe which is axially movably arranged in the inner cavity of the upper joint, the connecting cylinder, the hydraulic cylinder and the upper part of the spring cylinder; a moving sleeve which is arranged in the inner cavity of the lower part of the spring cylinder, and the upper part of the moving sleeve is connected with the lower part of the central pipe; a spring which is arranged in the spring cylinder and sleeved on the outer periphery of the moving sleeve, the upper end of the spring is abutted with the central pipe, and the lower end of the spring is abutted with the lower joint, so as to provide a restoring force for moving the central pipe upwards; a flow channel and a hydraulic cavity which are arranged on the cylinder wall of the hydraulic cylinder in parallel with the axis, the upper end of the flow channel is connected with a hydraulic control pipeline, and the lower end of the flow channel is communicated with the hydraulic cavity; a piston assembly which is arranged in the hydraulic cavity, the lower end of the piston assembly is clamped with the lower end of the central pipe, and the piston assembly is used for moving the central pipe downwards when the hydraulic control pipeline is pressed; a valve plate seat assembly which is connected with the upper part of the connecting cylinder, the valve plate of the valve plate seat assembly is used for closing the pipe cavity of the central pipe after the central pipe is moved downwards, and the valve plate is used for opening the pipe cavity of the central pipe after the central pipe is moved upwards.

2. The downhole integrated Y-pattern production testing tool for a controlled surface well according to claim 1, characterized in that, The valve plate seat assembly comprises: a valve seat which is sleeved on the upper part of the central pipe and connected with the inner periphery of the connecting cylinder; a valve plate which is hinged with the valve seat through a valve plate pin, and is used for buckling with the valve seat to open or close the pipe cavity of the central pipe; a torsional spring which is sleeved on the valve plate pin and is used for buckling the valve plate with the valve seat; a through hole which is eccentrically arranged on the valve plate; a balance plug which is arranged in the through hole, the lower edge of the balance plug protrudes from the lower end surface of the valve plate, and the balance plug is used for being contacted with the upper end of the central pipe when the central pipe is moved upwards, so as to facilitate the central pipe to turn over and open the valve plate; a leaf spring which is arranged on the upper end surface of the valve plate, and the free end of the leaf spring is connected with the balance plug, so as to fix the balance plug on the valve plate.

3. The downhole integrated Y-pattern production testing tool for a controlled surface well according to claim 2, characterized in that, The piston assembly comprises: a sealing rod, the outer periphery of the middle part of the sealing rod is matched with the inner periphery of the hydraulic cavity, and an upper connecting rod and a lower connecting rod are arranged on the upper part and the lower part of the sealing rod respectively; a V-shaped sealing assembly which is sleeved on the base of the upper connecting rod and the lower connecting rod respectively; a piston cap which is sleeved on the free end of the upper connecting rod; a piston rod, the upper end of the piston rod is connected with the free end of the lower connecting rod; a U-shaped clamping groove which is arranged at the end of the piston rod; a clamping ring which is arranged at the rear part of the central pipe and matched with the U-shaped clamping groove, so as to realize the clamping of the piston rod and the central pipe.

4. The downhole integrated Y-pattern production testing tool for a controlled- pressure well of claim 3, wherein, The application further comprises: a centralizing sleeve which is sleeved on the rear part of the piston rod and located at the inner periphery of the end of the hydraulic cavity, so as to centralize the piston rod; an extension sleeve which is sleeved on the rear part of the piston rod, and the two ends of the extension sleeve are abutted with the hydraulic cylinder and the central pipe respectively.

5. The downhole integrated Y-gatherer for geosteering and production testing of the claim 2, characterized in that: The upper joint, connecting cylinder, hydraulic cylinder, spring cylinder and lower joint are connected by screw threads respectively; the central pipe and the moving sleeve are connected by screw threads; an O-shaped sealing ring groove is arranged on the outer periphery of the valve seat; an O-shaped sealing ring groove is arranged on the outer periphery of the middle part of the connecting cylinder; an O-shaped sealing ring groove is arranged on the outer periphery of the upper part of the hydraulic cylinder; an O-shaped sealing ring groove is arranged on the outer periphery of the lower part of the hydraulic cylinder; an O-shaped sealing ring groove is arranged on the outer periphery of the upper part of the lower joint; O-shaped sealing rings are arranged in the O-shaped sealing ring grooves respectively; anti-rotation pins are arranged between the upper joint, connecting cylinder, hydraulic cylinder, spring cylinder and lower joint respectively; anti-rotation pins are arranged between the central pipe and the moving sleeve.

6. The downhole integrated Y-gatherer for geosteering and production testing of the claim 1, characterized in that: Radial flow holes are arranged on the moving sleeve.

7. The downhole integrated Y-gatherer for geosteering and production testing of the claim 5, characterized in that: A limiting step is arranged in the lower joint and matched with the lower end of the moving sleeve; through grooves are symmetrically arranged on both sides of the Y-shaped three-way joint.

8. The downhole integrated Y-gatherer for geosteering and production testing of the claim 7, characterized in that: A plurality of angle adjusting grooves are arranged on the outer periphery of the connecting cylinder, and an equal number of angle adjusting holes are arranged on the upper joint at positions corresponding to the angle adjusting grooves; an anti-rotation pin passes through any angle adjusting hole and the lower end selectively abuts against any angle adjusting groove.

9. The downhole integrated Y-gatherer for geosteering and production testing of the claim 1, characterized in that, Further comprising: A protection ring and a fixing ring which are half-cylindrical and are arranged in a sleeve shape and are buckled to each other and are arranged on the outer periphery of the front part of the hydraulic cylinder and abut against the lower end of the connecting cylinder and the middle part of the hydraulic cylinder respectively; a plurality of step holes are arranged on the side edge of the protection ring, and an equal number of threaded holes are arranged on the fixing ring at positions corresponding to the step holes; a fixing pin is screwed into the threaded hole after passing through the step hole, thereby connecting the protection ring and the fixing ring; Wherein, a rectangular groove is opened at the upper end of the protection ring, and a second step groove and a first step groove are sequentially arranged on the inner periphery of the middle and lower part of the protection ring from top to bottom, and a pipeline joint for communicating with the flow channel is arranged in the first step groove; the hydraulic control pipeline sequentially passes through the rectangular groove and the second step groove and enters the first step groove and is connected with the pipeline joint; a circular chamfer for preventing the hydraulic control pipeline from being knocked is arranged at the lower end of the first step groove.

10. The downhole integrated Y-gatherer for geosteering and production testing of the claim 9, characterized in that: A fixing groove is arranged on the lower part of the fixing ring, and a threaded hole corresponding to the fixing groove is arranged on the hydraulic cylinder; after the fixing pin is screwed into the threaded hole of the hydraulic cylinder, the pin cap of the fixing pin is located in the fixing groove, so as to prevent the fixing ring from rotating relative to the hydraulic cylinder and damaging the hydraulic pipeline.

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