Anti-overflow device for lifting pipe in underground operation

Abstract

The utility model belongs to the field of oil exploitation, and particularly relates to an anti-overflow device for a downhole operation lifting pipe, which solves the problems that in the prior art, an operation pipe column is retained in the air and overflows due to the failure of oil exploitation equipment, and comprises a pipe column joint, and an anti-overflow mechanism is arranged in the pipe column joint. The anti-overflow mechanism comprises a baffle ring fixed to the inner wall of the tubular column connector, two supporting columns are fixedly connected to the bottom face of the baffle ring, a supporting plate is fixedly connected to the bottom ends of the supporting columns, a fixing base is fixedly connected to the upper surface of the supporting plate, a sliding column is fixedly connected to the upper surface of the fixing base, and a sliding ring is slidably connected to the outer surface of the sliding column. The outer surface of the sliding ring is fixedly connected with a valve, the inner wall of the pipe column connector is fixedly connected with a fixing plate, the top end of the sliding column is fixedly connected with the bottom face of the fixing plate, the outer surface of the sliding column is wound with a telescopic spring, the top end of the telescopic spring is fixedly connected with the bottom face of the fixing plate, and the phenomenon that oil and water in the spraying pipe leak is effectively avoided as a whole.

Description

Technical Field

[0001] The utility model relates to the technical field of oil exploitation, in particular to an anti-overflow device for a nozzle of a downhole operation. Background Art

[0002] Petroleum is a fluid mineral buried deep underground. Initially, people called the oily liquid minerals produced in nature petroleum, the combustible gas natural gas, and the solid flammable oil minerals asphalt. As the research on these minerals deepened, people realized that they are all hydrocarbon compounds in composition and are related to each other in origin, so they are collectively called petroleum.

[0003] Oil extraction refers to the act of digging and extracting oil from places where oil is stored. In the process of oil extraction, oil and gas flow from the reservoir to the bottom of the well and then rise from the bottom of the well to the wellhead. In the underground construction of the oil field, manual on-site operations are usually used during the underground drilling and tripping process. However, manual operations often cause oil production equipment failures due to various reasons such as operation. The failure of oil production equipment causes the operating pipe to be stranded in the air and spill. The spillage of oil and water not only leads to waste of oil, but also pollutes the oil production site, which requires manual cleaning. Utility Model Content

[0004] The utility model solves the technical problem that the failure of oil production equipment causes the operating pipe string to be stranded in the air and overflow occurs, and provides an underground operation blower pipe overflow prevention device.

[0005] To solve the above technical problems, the utility model provides an anti-overflow device for a downhole operation nozzle, comprising a pipe column joint, an anti-overflow mechanism is arranged inside the pipe column joint, the anti-overflow mechanism comprises a retaining ring fixed to the inner wall of the pipe column joint, the bottom surface of the retaining ring is fixedly connected to two support columns, the bottom ends of the support columns are fixedly connected to a support plate, the upper surface of the support plate is fixedly connected to a fixed seat, the upper surface of the fixed seat is fixedly connected to a sliding column, the outer surface of the sliding column is slidably connected to a slip ring, the outer surface of the slip ring is fixedly connected to a valve, the inner wall of the pipe column joint is fixedly connected to a fixing plate, the top end of the sliding column is fixedly connected to the bottom surface of the fixing plate, the outer surface of the sliding column is wound with a telescopic spring, the top end of the telescopic spring is fixedly connected to the bottom surface of the fixing plate, and the bottom end of the telescopic spring is fixedly connected to the upper surface of the slip ring.

[0006] Preferably, the outer surface of each of the support columns is slidably connected to a movable ring, and the outer surface of the valve is fixedly connected to the outer surfaces of the two movable rings. During the movement of the valve, the movable ring can drive the movable ring to slide on the outer surface of the support column, so that the valve can move along the direction of the support column, effectively improving the stability of the valve during use and avoiding the valve from deflecting during movement.

[0007] Preferably, a slot is provided on the bottom surface of the retaining ring, and an insert ring matching the slot is fixedly connected to the upper surface of the valve. When the valve and the retaining ring are closed, the insert ring can be inserted into the slot, thereby effectively increasing the sealing effect between the retaining ring and the valve and avoiding leakage.

[0008] Preferably, a sealing ring is fixedly connected to the upper surface of the valve, and during the closing process of the valve and the retaining ring, the sealing ring can seal the connection between the valve and the retaining ring, thereby improving the sealing effect between the valve and the sealing ring.

[0009] Preferably, a fixing cylinder is provided at the upper portion of the pipe column joint, and the fixing cylinder and the pipe column joint are threadedly connected via a threaded path. A vent pipe is connected to the top of the fixing cylinder. Through the provision of the fixing cylinder, a separate cavity is provided between the fixing cylinder and the pipe column joint, and the oil and water leaked between the valve and the retaining ring will enter the cavity inside the fixing cylinder for temporary storage, thereby effectively preventing the oil and water from leaking from the opening of the pipe column joint.

[0010] Preferably, the outer surfaces of the fixing tube and the pipe column joint are fixedly connected with fixing rings, and the two fixing rings are fixedly connected with bolts, so that the fixing tube and the pipe column joint can be installed and fixed. The simple fixing method is convenient for the later staff to disassemble and install the fixing tube, and it is convenient to use.

[0011] Preferably, an operation indicator plate is fixedly connected to the upper surface of the fixed cylinder, and an instruction manual is engraved on the upper surface of the operation indicator plate, which can effectively remind the staff to operate according to the correct operating method and effectively avoid damage to the anti-overflow device due to improper operation.

[0012] Compared with the related art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, when oil and water are close to the pipe column joint due to shaking, the oil and water will push the valve, so that the valve pushes the telescopic spring to move upward, and the valve seals the through hole of the retaining ring, thereby effectively preventing oil and water from leaking from the gap between the retaining ring and the valve. At the same time, if there is a slight leakage of oil and water, the oil and water enter the cavity inside the fixed cylinder for temporary storage, which effectively prevents the leakage of oil and water inside the nozzle.

[0014] 2. The utility model provides a movable ring so that the valve can drive the movable ring to slide on the outer surface of the support column during movement, so that the valve can move along the direction of the support column, effectively improving the stability of the valve during use and avoiding the valve from deflecting during movement. Through the provision of the slot and the fork, when the valve and the retaining ring are closed, the insert ring can be inserted into the inside of the slot, thereby effectively increasing the sealing effect between the retaining ring and the valve and avoiding leakage. Through the provision of the fixed cylinder, a separate cavity is provided between the fixed cylinder and the pipe column joint. The oil and water leaked between the valve and the retaining ring will enter the cavity inside the fixed cylinder for temporary storage, effectively avoiding the oil and water from leaking from the opening of the pipe column joint.

[0015] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a front view of the utility model;

[0018] Figure 2 This is a cross-sectional view of the fixing tube of the utility model;

[0019] Figure 3 This is a top view of the pipe column joint of the utility model;

[0020] Figure 4 This is a front cross-sectional view of the pipe column joint of the utility model.

[0021] Numbers in the figure:

[0022] 1. Pipe column joint; 2. Anti-overflow mechanism; 201. Fixed plate; 202. Retaining ring; 203. Telescopic spring; 204. Sliding column; 205. Insert ring; 206. Sliding ring; 207. Fixed seat; 208. Support plate; 209. Support column; 2010. Moving ring; 2011. Sealing ring; 2012. Slot; 2013. Valve; 3. Bolt; 4. Fixed ring; 5. Fixed cylinder; 6. Ventilation pipe; 7. Threaded path; 8. Operation indicator board. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0024] See also Figure 1-4 The invention discloses a downhole operation nozzle overflow prevention device, comprising a pipe joint 1, a fixing tube 5 is arranged on the upper part of the pipe joint 1, the fixing tube 5 and the pipe joint 1 are threadedly connected through a threaded path 7, a vent pipe 6 is connected to the top of the fixing tube 5, and a separate cavity is provided between the fixing tube 5 and the pipe joint 1 through the setting of the fixing tube 5, and the oil and water leaked between the valve 2013 and the retaining ring 202 will enter the cavity inside the fixing tube 5 for temporary storage, thereby effectively preventing the oil and water from leaking from the opening of the pipe joint 1.

[0025] The outer surfaces of the fixing tube 5 and the pipe column joint 1 are fixedly connected with a fixing ring 4, and the two fixing rings 4 are fixedly connected with bolts 3, so that the fixing tube 5 and the pipe column joint 1 can be installed and fixed. The simple fixing method is convenient for the later staff to disassemble and install the fixing tube 5, and it is convenient to use.

[0026] An operation indicator plate 8 is fixedly connected to the upper surface of the fixed cylinder 5, and an instruction manual is engraved on the upper surface of the operation indicator plate 8, which can effectively remind the staff to operate according to the correct operation method and effectively avoid damage to the anti-overflow device due to improper operation.

[0027] The instruction manual on the operation instruction plate 8 is written in an engraved manner, which effectively prevents the fonts on the outer surface of the operation instruction plate 8 from being worn out due to long-term use.

[0028] An anti-overflow mechanism 2 is disposed inside the pipe column joint 1 . The anti-overflow mechanism 2 includes a retaining ring 202 fixed to the inner wall of the pipe column joint 1 .

[0029] The retaining ring 202 of the present application is circular, and a through hole for oil and water to pass through is opened in the middle of the retaining ring 202, and the diameter of the valve 2013 is larger than the diameter of the through hole in the middle of the retaining ring 202. The bottom surface of the retaining ring 202 is fixedly connected to two support columns 209, and the bottom end of the support column 209 is fixedly connected to a support plate 208, and the upper surface of the support plate 208 is fixedly connected to a fixed seat 207, and the upper surface of the fixed seat 207 is fixedly connected to a sliding column 204, and the outer surface of the sliding column 204 is slidably connected to a slip ring 206, and the outer surface of the slip ring 206 is fixedly connected to the valve 2013, and the upper surface of the valve 2013 is fixedly connected to a sealing ring 2011. In the process of closing the valve 2013 and the retaining ring 202, the sealing ring 2011 can seal the connection between the valve 2013 and the retaining ring 202, thereby improving the sealing effect between the valve 2013 and the sealing ring 2011.

[0030] In the present application, the sealing ring 2011 is matched with the inner ring of the valve 2013 , and the sealing ring 2011 is located on the inner ring of the insert ring 205 .

[0031] The outer surface of each support column 209 is slidably connected to a moving ring 2010, and the outer surface of the valve 2013 is fixedly connected to the outer surfaces of the two moving rings 2010. The valve 2013 can drive the moving ring 2010 to slide on the outer surface of the support column 209 during movement, so that the valve 2013 can move along the direction of the support column 209, effectively improving the stability of the valve 2013 during use and avoiding the valve 2013 from deflecting during movement.

[0032] The inner wall of the pipe column joint 1 is fixedly connected with a fixing plate 201, the top of the sliding column 204 is fixedly connected with the bottom surface of the fixing plate 201, the bottom surface of the retaining ring 202 is provided with a slot 2012, and the upper surface of the valve 2013 is fixedly connected with an insert ring 205 adapted to the slot 2012. When the valve 2013 and the retaining ring 202 are closed, the insert ring 205 can be inserted into the inside of the slot 2012, thereby effectively increasing the sealing effect between the retaining ring 202 and the valve 2013 to avoid leakage.

[0033] A telescopic spring 203 is wound around the outer surface of the sliding column 204 , the top end of the telescopic spring 203 is fixedly connected to the bottom surface of the fixed plate 201 , and the bottom end of the telescopic spring 203 is fixedly connected to the upper surface of the slip ring 206 .

[0034] The specific implementation process of the utility model is as follows: connect the pipe column joint 1 with the pipe column. When oil and water approach the pipe column joint 1 due to shaking, the oil and water will push the valve 2013, so that the valve 2013 pushes the telescopic spring 203 to move upward. The valve 2013 seals the through hole of the retaining ring 202, thereby effectively preventing oil and water from leaking from the gap between the retaining ring 202 and the valve 2013. If there is very little leakage of oil and water, the oil and water enter the cavity inside the fixed tube 5 for temporary storage.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for preventing overflow of a nozzle for underground operation, comprising a pipe column joint (1), characterized in that: The pipe column joint (1) is provided with an anti-overflow mechanism (2) inside, the anti-overflow mechanism (2) comprising a retaining ring (202) fixed to the inner wall of the pipe column joint (1), the bottom surface of the retaining ring (202) being fixedly connected to two support columns (209), the bottom ends of the support columns (209) being fixedly connected to a support plate (208), the upper surface of the support plate (208) being fixedly connected to a fixed seat (207), the upper surface of the fixed seat (207) being fixedly connected to a sliding column (204), the outer surface of the sliding column (204) being slidingly connected to the inner wall of the pipe column joint (1), and the outer surface of the sliding column (204) being slidingly connected to the inner wall of the pipe column joint (1). A slip ring (206) is connected, the outer surface of the slip ring (206) is fixedly connected to a valve (2013), the inner wall of the pipe column joint (1) is fixedly connected to a fixing plate (201), the top of the sliding column (204) is fixedly connected to the bottom surface of the fixing plate (201), a telescopic spring (203) is wound around the outer surface of the sliding column (204), the top of the telescopic spring (203) is fixedly connected to the bottom surface of the fixing plate (201), and the bottom end of the telescopic spring (203) is fixedly connected to the upper surface of the slip ring (206).

2. The underground operation nozzle overflow prevention device according to claim 1, characterized in that: The outer surface of each support column (209) is slidably connected to a moving ring (2010), and the outer surface of the valve (2013) is fixedly connected to the outer surfaces of the two moving rings (2010).

3. The underground operation nozzle overflow prevention device according to claim 1, characterized in that: The bottom surface of the retaining ring (202) is provided with a slot (2012), and the upper surface of the valve (2013) is fixedly connected with an insert ring (205) adapted to the slot (2012).

4. The underground operation nozzle overflow prevention device according to claim 1, characterized in that: A sealing ring (2011) is fixedly connected to the upper surface of the valve (2013).

5. The underground operation nozzle overflow prevention device according to claim 1, characterized in that: A fixing tube (5) is arranged on the upper part of the pipe column joint (1), the fixing tube (5) and the pipe column joint (1) are threadedly connected via a threaded passage (7), and the top end of the fixing tube (5) is connected to a vent pipe (6).

6. The underground operation nozzle overflow prevention device according to claim 5, characterized in that: The outer surfaces of the fixing tube (5) and the pipe column joint (1) are both fixedly connected with fixing rings (4), and the two fixing rings (4) are fixedly connected by bolts (3).

7. The underground operation nozzle overflow prevention device according to claim 5, characterized in that: An operation indicating plate (8) is fixedly connected to the upper surface of the fixed cylinder (5).

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