CN210948574U - Oil inlet device of temporary-blocking oil well pump - Google Patents

Abstract

A temporary blocking oil-well pump oil inlet device, the upper part of the main body has screw thread connected with the lower part of the pump cylinder of the oil-well pump, the lower part of the main body has screw thread connected with the upper part of the oil-well pump oil inlet valve, the upper part of the fixed seat is provided with a cylinder, the cylinder is provided with a receiving hole, the lower part of the fixed seat is provided with an inner polygon hole, the middle part of the fixed seat is provided with a reducing section, a liquid outlet hole is arranged between the inner polygon hole and the reducing section, a magnet ring is sleeved on the upper part of the flow resisting plug and fixed, the flow resisting plug is arranged in the main body, the lower part of the fixed seat is fixed in the main body, the outer diameter of the flow resisting plug is larger than the inner diameter of the upper part of the main body, the outer diameter of the magnet ring is larger than the inner diameter of the upper part of the main body, the choke plug is pressed by external force from top to bottom and fixed in the receiving hole, and the inner diameter of the upper part of the main body is larger than the diameter of the plunger of the oil well pump.

Description

Oil inlet device of temporary-blocking oil well pump

Technical Field

The utility model relates to a device that oil field oil pumping well was used with the oil-well pump is supporting, is a stifled oil-well pump oil feed device temporarily.

Background

Sometimes, a pin-type tool is put into an oil pumping pipe column, for example, a Chinese patent 200410039801.5 "tubing anchor", a sealing cylinder is fixed by an anti-moving pin, belongs to the pin-type tool, and is installed on an oil well pump. The tools have larger outer diameter and small difference with the inner diameter of the casing, and the tools walk in the casing like pistons when going down in the casing, because the casing is filled with well fluid, when the walking speed is higher, pressure difference is formed between two ends of a pin type tool with large diameter, namely the pressure of the lower end of the tool with large diameter is higher than that of the upper end, the lower end of the tool with large diameter is communicated with an oil pipe on a pump through an oil inlet valve of an oil well pump, namely high pressure formed when the tool with large diameter goes down the well quickly can be transmitted into the oil pipe on the pump, an oil pipe column is formed by connecting oil pipes with the length of more than 9 meters, the tool is lifted to be in a vertical state by an operating machine and is put into the well, after one oil pipe is put down, the other oil pipe is lifted to be in a vertical state by the operating machine and is connected with the oil pipe which has gone down the well, the oil pipe column has a pause state in the process, the pressure at the lower end of the tool is reduced, the pressure in the oil pipe on the pump can not be reduced under the action of an oil inlet valve on the oil well pump, so that a pressure difference is formed between the inside and the outside of the large-diameter pin tool, the pressure difference is increased along with the increase of the well descending depth, when the pressure difference is increased to exceed the bearing capacity of a pin on the pin tool, the pin on the pin tool can be sheared off, the middle action of the pin tool is realized, when the pin tool acts midway, the oil pumping pipe column can not be descended, and the oil pumping pipe column can not be descended to the designed position, so that the operation can not be successful if the pin tool acts midway, and the great economic loss is caused.

Disclosure of Invention

The utility model aims at designing a stifled oil-well pump oil feed device temporarily, when making its oil-well pump tubular column that has pin class instrument under, the internal pressure of pin class instrument is not higher than external pressure, prevents that the pin from being cut off, guarantees that oil-pumping pipe tubular column is gone into the well successfully.

The purpose of the utility model is realized like this: the choke plug comprises a main body, a choke plug, a fixed seat and a magnet ring, wherein the upper part of the main body is provided with a thread connected with the lower part of a pump cylinder of an oil well pump, the lower part of the main body is provided with a thread connected with the upper part of an oil inlet valve of the oil well pump, the upper part of the fixed seat is provided with a cylindrical cylinder, the cylindrical cylinder is internally provided with a receiving hole, the lower part of the fixed seat is internally provided with an inner polygonal hole, the middle part of the fixed seat is externally provided with a reducing section, a liquid outlet hole is arranged between the inner polygonal hole and the reducing section, the magnet ring is sleeved on the upper part of the choke plug and fixed, the choke plug is placed in the main body, the lower part of the fixed seat is fixed in the main body, an annular channel is formed between the cylindrical cylinder and the inner wall of the main body, the lower part of the annular channel is communicated with the liquid outlet hole, the, the taper of the cone is the same as that of the inner conical surface of the main body, the main body and the magnet ring can be combined into a whole through magnetic force, the choke plug is suspended in the main body under the magnetic force action of the magnet ring, the choke plug can block an upper channel of the main body, the choke plug is pressed into the receiving hole from top to bottom by external force, the outer wall of the choke plug is matched with the receiving hole to fix the choke plug in the receiving hole, and the inner diameter of the upper part of the main body is larger than the diameter of the plunger of the oil well pump.

The utility model has the advantages that: the utility model discloses install between the pump barrel of oil-well pump and inlet valve, the lower part of the pump barrel of oil-well pump is blockked up temporarily, and in the time of going into the well liquid can not get into the oil pipe on the pump, the internal pressure of the pin class instrument of connecting on the tubular column can not be higher than external pressure, and the pin on the pin class instrument can not cut off when going into the well, can prevent that pin class instrument from moving midway, guarantees that the oil pumping tubular column is gone into the well successfully.

Drawings

Fig. 1 is a structural diagram of the present invention.

Detailed Description

The following describes an embodiment of the present invention in detail with reference to fig. 1.

As shown in figure 1, the embodiment of the utility model comprises a main body 1, a choke plug 2, a fixed seat 3 and a magnet ring 5, wherein the upper part of the main body 1 is provided with a thread connected with the lower part of a pump cylinder of an oil well pump, the lower part of the main body 1 is provided with a thread connected with the upper part of an oil inlet valve of the oil well pump, the upper part of the fixed seat 3 is provided with a cylinder 3-2, the cylinder 3-2 is internally provided with a receiving hole 3-1, the lower part of the fixed seat 3 is internally provided with an inner polygonal hole 3-5, the middle part of the fixed seat 3 is externally provided with a reducing section 3-3, a liquid outlet 3-4 is arranged between the inner polygonal hole 3-5 and the reducing section 3-3, the magnet ring 5 is sleeved on the upper part of the choke plug 2, a baffle sleeve is arranged on the upper part of the magnet plug 2 to fix the magnet ring 5 on the choke plug, after the choke plug 2 is placed in the main body 1, the lower part of the fixed seat 3 is fixed in the main body 1 (the external thread of the lower part of the fixed seat 3 is connected with the internal thread of the main body 1), an annular channel 4 is formed between the cylindrical barrel 3-2 and the inner wall of the main body 1, the lower part of the annular channel 4 is communicated with the liquid outlet hole 3-4, the outer diameter of the choke plug 2 is larger than the inner diameter of the upper part of the main body 1, the outer diameter of the magnet ring 5 is larger than the inner diameter of the upper part of the main body 1, the upper end of the cylindrical barrel 3-2 is a cone, the taper of the cone is the same as that of the inner conical surface of the main body 1, the main body 1 and the magnet ring 5 can be combined into a whole through magnetic force, the choke plug 2 enables the choke plug 2 to be suspended in the main body 1 under the magnetic force of the magnet ring 5, so that the choke plug 2 can block the upper, the outer wall 2-1 of the choke plug 2 is matched with the receiving hole 3-1 to fix the choke plug 2 in the receiving hole 3-1, and the inner diameter of the upper part of the main body 1 is larger than the diameter of the plunger of the oil well pump.

An inner polygonal hole 3-5 arranged in the lower part of the fixed seat 3 is used for installing and placing tools when the fixed seat is connected to the main body, so that the fixed seat 3 and the main body 1 are firmly connected.

The utility model discloses install under the pump barrel of oil-well pump and inlet valve, along with the oil pumping tubular column goes into in the well. When the oil well is lowered, the upper channel of the main body 1 is blocked by the choke plug 2, well liquid cannot enter the oil pipe on the pump, the internal pressure of a pin tool connected to the pump barrel of the oil well pump cannot be higher than the external pressure, the pin tool cannot move midway, and the success of the lowering operation is ensured.

After the design position was gone down to the oil pumping tubular column, in putting into the pump barrel under the sucker rod lower part with oil-well pump piston connection again, in oil-well pump piston lower part can reach main part 1, the weight pressure of oil-well rod post left choked flow stopper 2, made its choked flow stopper 2 no longer block up the upper portion passageway of main part 1, the utility model discloses well liquid under can pass through go out liquid hole 3-4, annular channel 4 get into the pump in, the oil feed passageway is opened. The choke plug 2 is pressed into the receiving hole 3-1 by the weight of the sucker rod, and the outer wall 2-1 of the choke plug 2 is in static fit with the receiving hole 3-1, so that the choke plug 2 is fixed, the oil inlet channel is always opened, and the oil pump can normally pump oil.

Claims (1)

1. The utility model provides a stifled oil-well pump oil feed device temporarily, includes main part (1), choked flow stopper (2), fixing base (3), magnet ring (5), the upper portion of main part (1) have with the sub-unit connection's of oil-well pump barrel screw thread, the lower part of main part (1) have with the screw thread of the upper portion connection of oil-well pump inlet valve, characterized by: the upper part of the fixed seat (3) is provided with a cylindrical barrel (3-2), the cylindrical barrel (3-2) is internally provided with a receiving hole (3-1), the lower part of the fixed seat (3) is internally provided with an inner polygonal hole (3-5), the middle part of the fixed seat (3) is externally provided with a reducing section (3-3), a liquid outlet hole (3-4) is arranged between the inner polygonal hole (3-5) and the reducing section (3-3), the magnet ring (5) is sleeved on the upper part of the flow resisting plug (2) and fixed, the lower part of the fixed seat (3) is fixed in the main body (1) after the flow resisting plug (2) is placed in the main body (1), an annular channel (4) is formed between the cylindrical barrel (3-2) and the inner wall of the main body (1), and the lower part of the annular channel (4) is communicated with the liquid outlet hole (3-4), the outer diameter of the flow resisting plug (2) is larger than the inner diameter of the upper part of the main body (1), the outer diameter of the magnet ring (5) is larger than the inner diameter of the upper part of the main body (1), the upper end of the cylindrical barrel (3-2) is a cone, the taper of the cone is the same as that of the inner conical surface of the main body (1), the main body (1) and the magnet ring (5) can be combined into a whole through magnetic force, the flow resisting plug (2) is suspended in the main body (1) under the magnetic force action of the magnet ring (5), the flow resisting plug (2) can block an upper channel of the main body (1), after the flow resisting plug (2) is pressed into the receiving hole (3-1) from top to bottom by external force, the outer wall (2-1) of the flow resisting plug (2) is matched with the receiving hole (3-1) to fix the flow resisting plug (2) in the receiving hole (3-1), the inner diameter of the upper part of the main body (1) is larger than the diameter of the plunger of the oil well pump.

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