Testing tool suitable for windowing multifunctional circulating valve

Abstract

The utility model discloses a testing tool suitable for a windowing multifunctional circulating valve. The testing tool comprises a gasket, a pressure testing plug and a bolt. The bolt penetrates into the upper part of the multifunctional circulating valve, the pressure test plug is connected with the female buckle end of the multifunctional circulating valve, the through hole is connected with a hand pump, pressing and continuous pressurization are carried out, and when the threaded section of the bolt completely extends out of the lower male buckle end of the multifunctional circulating valve, the locking nut is connected, and the sealing performance of the upper valve element of the multifunctional circulating valve is tested; the pressure test plug is detached from the female buckle end and connected to the male buckle end of the multifunctional circulating valve, pressing is conducted, and the sealing performance of the lower valve element of the multifunctional circulating valve is tested. The device is simple in structure and convenient to operate, can complete the integral function test of the multifunctional circulating valve at one time in a land workshop, comprises a valve core upper part sealing test and a valve core lower part sealing test, fills the blank of the integral pressure test technology of the multifunctional circulating valve, ensures the test quality of the multifunctional circulating valve, improves the operation success rate, and improves the working efficiency. Manufacturing cost is low, practicability is high, and application and popularization are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of oilfield development engineering, in particular to a testing tool suitable for a window-opening multifunctional circulation valve. Background Art

[0002] In recent years, window opening operations have become increasingly common as an effective means of secondary development of adjustment wells and emergency response to complex situations. As a key tool in window opening operations, the multifunctional circulation valve plays an important role in window opening operations. Before the bypass is closed, it is used to provide a bypass flow channel to circulate drilling fluid when drilling down, and cooperate with MWD to determine the orientation; after the bypass is closed, it provides the transmission pressure conditions for the hydraulic seat anchor. During the window opening operation, after the drill bit lowers the anchor and the bevel into the exact position, the bypass valve is activated by turning on the pump. The bypass valve is within the allowable displacement range to ensure the bypass is opened and the MWD orientation is completed. After the bypass is closed, the anchor is seated and the pressure holding requirements are met. Therefore, the reliability of the performance of the multifunctional circulation valve is directly related to the success or efficiency of the casing window opening operation.

[0003] After disassembling and inspecting the faulty multifunctional circulation valve, it was found that the lower seal of the circulation valve was damaged or failed, while the upper seal was generally intact. Combined with the current land-based testing process of the multifunctional circulation valve, it was found that the existing test tooling can only meet the requirements of the upper seal pressure test of the multifunctional circulation valve, but cannot achieve the lower seal pressure test. Therefore, the existing test tooling cannot timely judge the lower seal performance of the circulation valve, which increases the uncertainty of offshore operations and has high safety risks. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a testing tool suitable for a window-opening multifunctional circulation valve, which can complete the functional test, valve core upper sealing test and valve core lower sealing test of the multifunctional circulation valve at one time, thereby ensuring the test quality of the multifunctional circulation valve and improving the operation success rate.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a test fixture suitable for a window-opening multifunctional circulation valve, comprising a gasket, a pressure test plug and a bolt, the gasket is a stepped cylinder, a cavity is provided on the central axis of the gasket, the cavity is coaxial with the gasket, the pressure test plug is a cylinder, one end face of the pressure test plug is provided with a groove, the other end face of the pressure test plug is provided with a through hole, the groove and the through hole are both coaxial with the pressure test plug, the groove is connected with the through hole, the bolt is a cylinder, A thread is provided on the outer cylindrical surface of the bolt, and the bolt penetrates into the upper part of the multifunctional circulating valve. The pressure test plug is connected to the female buckle end of the multifunctional circulating valve, and the through hole is connected to a hand pump to pressurize and continuously increase the pressure. When the threaded section of the bolt is completely extended out of the lower male buckle end of the multifunctional circulating valve, the locking nut is connected to test the sealing of the upper valve core of the multifunctional circulating valve; the pressure test plug is removed from the female buckle end and connected to the male buckle end of the multifunctional circulating valve, and pressurized to test the sealing of the lower valve core of the multifunctional circulating valve.

[0006] Furthermore, the gasket is made of AISI 4140, the outer edges of the end faces of the gasket are chamfered, the chamfer is C1.0, the burrs are removed, and the gasket is phosphated as a whole.

[0007] Furthermore, both ends of the cavity are chamfered, and the included angle between the inward extension line of the chamfer and the inner wall of the gasket is 15°.

[0008] Furthermore, the pressure test plug is made of AISI 4140, the outer edge of the end face of the pressure test plug is chamfered to C2.0 to remove burrs, and the pressure test plug is phosphating-treated as a whole.

[0009] Furthermore, the groove includes a cylindrical groove and a frustoconical groove, the cylindrical groove is provided near the through hole end, one end of the cylindrical groove is connected to the small circular surface end of the frustoconical groove, the large circular surface end of the frustoconical groove passes through the pressure test plug away from the through hole end, and the inner wall of the through hole is provided with an NPT thread.

[0010] Furthermore, a through hole is provided on the outer cylindrical surface of the pressure test plug close to the through hole end, and the through hole is detachably connected to a handle.

[0011] Furthermore, the buckle type of the pressure test plug is of various specifications.

[0012] Furthermore, the bolt is an ACME bolt.

[0013] Furthermore, the material of the bolt is AISI 4140, the outer edge of the end face of the bolt is chamfered, the chamfer is C1.0, the burrs are removed, and the entire bolt is phosphating treated.

[0014] Furthermore, the bolt comprises two sections, and the two sections of the bolt are plug-connected and have strong interchangeability.

[0015] The advantages and positive effects of the utility model are:

[0016] The utility model has a simple structure and is easy to operate. The overall function test of the multifunctional circulating valve can be completed at one time in a land workshop, including a valve core upper sealing test and a valve core lower sealing test. This fills the technical gap of the overall pressure test of the multifunctional circulating valve, ensures the test quality of the multifunctional circulating valve, and improves the operation success rate. It has low manufacturing cost, strong practicability, and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of the washer structure of an embodiment of the utility model.

[0019] Figure 3 It is a sectional view of a gasket according to an embodiment of the present utility model.

[0020] Figure 4 It is a schematic diagram of the structure of a pressure test plug according to an embodiment of the utility model.

[0021] Figure 5 It is a cross-sectional view of a pressure test plug according to an embodiment of the utility model.

[0022] Figure 6 It is a schematic diagram of a pressure test plug handle according to an embodiment of the utility model.

[0023] Figure 7 It is a schematic diagram of the bolt structure of an embodiment of the utility model.

[0024] Figure 8 It is a schematic diagram of the locking nut structure of an embodiment of the utility model.

[0025] Fig. 9 It is a cross-sectional view of a locking nut according to an embodiment of the utility model.

[0026] In the figure:

[0027] 1. Washer; 2. Pressure test plug; 3. Bolt;

[0028] 4. Locking nut; 5. Cavity; 6. Groove;

[0029] 7. Through hole; 8. Through hole; 9. Handle. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0034] like Figure 1 As shown, a test fixture suitable for a window-opening multifunctional circulation valve includes a gasket 1, a pressure test plug 2 and a bolt 3. The gasket 1 is a stepped cylinder, and a cavity 5 is provided on the central axis of the gasket 1, and the cavity 5 is coaxial with the gasket 1. The pressure test plug 2 is a cylinder, and a groove 6 is provided on one end face of the pressure test plug 2, and a through hole 7 is provided on the other end face of the pressure test plug 2. The groove 6 and the through hole 7 are coaxial with the pressure test plug 2, and the groove 6 is connected with the through hole 7. The bolt 3 is a cylinder, and a thread is provided on the outer cylindrical surface of the bolt 3. The bolt 3 is inserted into the upper part of the multifunctional circulating valve, the pressure test plug 2 is connected to the female buckle end of the multifunctional circulating valve, and the through hole 7 is connected to the hand pump to pressurize and continuously increase the pressure. When the threaded section of the bolt 3 is completely extended out of the lower male buckle end of the multifunctional circulating valve, the locking nut 4 is connected to test the sealing of the upper valve core of the multifunctional circulating valve; the pressure test plug 2 is removed from the female buckle end and connected to the male buckle end of the multifunctional circulating valve, and pressurized to test the sealing of the lower valve core of the multifunctional circulating valve.

[0035] The gasket 1 is any structure that realizes the above functions, specifically, Figure 2 , Figure 3 As shown, the gasket 1 provided in this embodiment is a stepped cylinder, the outer diameter of the small round end of the gasket 1 is 80mm, and its length is 38mm, the outer diameter of the large round end of the gasket 1 is 89mm, and its length is 12.5mm. The inner diameter of the cavity 5 is 44.5mm, and both ends of the cavity 5 are chamfered. The angle between the inward extension line of the chamfer and the inner wall of the gasket 1 is 15°, and the length of the chamfer at both ends is 12.5mm. The material of the gasket 1 is AISI 4140, and the outer edges of the end faces of the gasket 1 are chamfered, the chamfer is C1.0, and the burrs are removed. The gasket 1 is phosphating as a whole.

[0036] The pressure test plug 2 is any structure that realizes the above functions, specifically, Figure 4 , Figure 5 As shown, the outer diameter of the pressure test plug 2 provided in this embodiment is 203mm, and its length is 216mm. The groove 6 includes a cylindrical groove and a frustoconical groove. The groove 6 near the through hole 7 is a cylindrical groove. One end of the cylindrical groove is connected to the small circular surface end of the frustoconical groove. The large circular surface end of the frustoconical groove passes through the end of the pressure test plug 2 away from the through hole 7. The diameter of the cylindrical groove is consistent with the diameter of the small circular surface end of the frustoconical groove, both of which are 144mm, and its length is 45mm. Circular grooves are provided above and below the large circular surface end of the frustoconical groove. The diameter of the circular grooves is 4mm and the depth is 2.5mm. The inner wall of the through hole 7 is provided with an NPT thread. A through hole 8 is provided on the outer cylindrical surface of the end of the pressure test plug 2 near the through hole 7. The through hole 8 can be detachably connected to the handle 9, as shown Figure 6 As shown, it is convenient to connect the pressure test plug 2 with the multi-function circulation valve. The material of the pressure test plug 2 is AISI 4140, the outer edge of the end face of the pressure test plug 2 is chamfered, the chamfer is C2.0, the burrs are removed, and the pressure test plug 2 is phosphating as a whole.

[0037] The buckle types of the pressure test plug 2 can be of various specifications to meet the testing requirements of various different sizes of tools to be tested. Specifically, the buckle types of the pressure test plug 2 provided in this embodiment are 4-1 / 2" IF BOX and 6-5 / 8" FH BOX.

[0038] Bolt 3 is any structure to achieve the above functions, specifically, Figure 7 As shown, the bolt 3 is an ACME bolt 3. The material of the bolt 3 is AISI 4140, the outer edge of the end face of the bolt 3 is chamfered, the chamfer is C1.0, the burrs are removed, and the bolt 3 is phosphating as a whole. The bolt 3 provided in this embodiment includes two sections, and the two sections of the bolt 3 are plug-connected and have strong interchangeability.

[0039] The working principle of this embodiment is as follows:

[0040] Insert the ACME bolt 3 from the top of the multifunctional circulation valve and install the blind plug. Connect the female buckle end of the multifunctional circulation valve to the pressure test plug 2, connect the hand pump to the NPT thread on the pressure test plug 2, and start pressure testing the sealing of the upper valve core of the circulation valve. Use the hand pump to repeat the pressure / pressure relief 5 times, each time at 500psi, and maintain the pressure for 5 minutes. It is qualified if the pressure does not drop. The sixth pressure is 3500psi. At this time, the threaded section of the ACME bolt 3 is completely extended from the male buckle end of the lower circulation valve. Connect the locking nut 4, as shown. Figure 8 , Fig. 9 As shown, to prevent the valve core from moving upward under the push of the spring after the pressure is released. Maintain the pressure for 15 minutes. If the pressure does not drop, it means that the sealing of the upper valve core of the circulation valve is qualified. Release the pressure. Remove the pressure test plug 2 from the female buckle end and connect it to the male buckle end of the circulation valve. Connect the hand pressure pump to start testing the sealing of the lower valve core of the circulation valve. Pressurize to 3500psi, maintain the pressure for 15 minutes. If the pressure does not drop, it means that the sealing of the lower part of the circulation valve is also qualified. Release the pressure. The overall test of the circulation valve is now completed.

[0041] The advantages and positive effects of the utility model are:

[0042] The utility model has a simple structure and is easy to operate. The overall function test of the multifunctional circulating valve can be completed at one time in a land workshop, including a valve core upper sealing test and a valve core lower sealing test. This fills the technical gap of the overall pressure test of the multifunctional circulating valve, ensures the test quality of the multifunctional circulating valve, and improves the operation success rate. It has low manufacturing cost, strong practicability, and is suitable for promotion and application.

[0043] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A test fixture suitable for a window-opening multifunctional circulation valve, characterized in that: The invention comprises a gasket, a pressure test plug and a bolt, the gasket being a stepped cylinder, a cavity being provided on the central axis of the gasket, the cavity being coaxial with the gasket, the pressure test plug being a cylinder, a groove being provided on one end face of the pressure test plug, a through hole being provided on the other end face of the pressure test plug, the groove and the through hole being coaxial with the pressure test plug, the groove being communicated with the through hole, the bolt being a cylinder, a thread being provided on the outer cylindrical surface of the bolt, the bolt penetrating into the upper part of the multi-functional circulating valve, the pressure test plug being connected to the female buckle end of the multi-functional circulating valve, the through hole being connected to a hand pressure pump, pressurizing and continuously increasing the pressure, and when the threaded section of the bolt is completely extended out of the lower male buckle end of the multi-functional circulating valve, a locking nut is connected to test the sealing property of the upper valve core of the multi-functional circulating valve; the pressure test plug is removed from the female buckle end and connected to the male buckle end of the multi-functional circulating valve, pressurized, and tested the sealing property of the lower valve core of the multi-functional circulating valve.

2. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 1, characterized in that: The gasket is made of AISI 4140, the outer edges of the end faces of the gasket are chamfered, the chamfer is C1.0, the burrs are removed, and the gasket is phosphated as a whole.

3. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 1 or 2, characterized in that: Both ends of the cavity are chamfered, and the included angle between the inward extension line of the chamfer and the inner wall of the gasket is 15°.

4. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 1 or 2, characterized in that: The pressure test plug is made of AISI 4140, the outer edge of the end face of the pressure test plug is chamfered to C2.0, burrs are removed, and the pressure test plug is phosphating as a whole.

5. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 4, characterized in that: The groove includes a cylindrical groove and a frustum of a cone. The cylindrical groove is provided near the through hole end. One end of the cylindrical groove is connected to the small circular surface end of the frustum of a cone groove. The large circular surface end of the frustum of a cone groove passes through the pressure test plug and is away from the through hole end. The inner wall of the through hole is provided with an NPT thread.

6. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 5, characterized in that: The pressure test plug is provided with a through hole on the outer cylindrical surface close to the through hole end, and the through hole can be detachably connected to a handle.

7. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 5, characterized in that: The pressure test plug buckle type has various specifications.

8. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 1 or 2, characterized in that: The bolts are ACME bolts.

9. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 8, characterized in that: The material of the bolt is AISI 4140, the outer edge of the end face of the bolt is chamfered, the chamfer is C1.0, the burrs are removed, and the entire bolt is phosphating treated.

10. A test fixture suitable for a window-opening multifunctional circulation valve according to claim 8, characterized in that: The bolt comprises two sections, and the two sections of the bolt are plug-connected and have strong interchangeability.

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