CN214660059U - Hydraulic oil scraping device for oil fishing - Google Patents

Abstract

The utility model belongs to the hydraulic equipment in the oil recovery trade, in particular to oil field oil bailing handles crude oil's hydraulic pressure frizing device on wire rope. The upper part in the cylinder barrel is connected with a locking cylinder head in a threaded manner, the upper end of a piston rod is hermetically connected in an inner hole below the locking cylinder head through a dustproof ring, an oil scraping sleeve is movably arranged in the inner hole of the locking cylinder head, the periphery below the piston rod is connected with the inner hole of the lower cylinder head through a guide ring, an upper oil port and a lower oil port are arranged on the wall of the cylinder barrel and communicated with an oil cavity in the cylinder barrel, a joint body is fixedly connected with the lower end head of the piston rod, concentric central holes are formed in the piston rod, a pressure pad, the oil scraping sleeve, the upper pressure pad and the locking sleeve, the sealing performance of the device is good, the safety of well repairing operation is ensured, the hydraulic device can automatically compensate the abrasion of the oil scraping sleeve, manual adjustment is not needed, the device can be used for a long time, and is suitable for thick oil exploitation in an oil field, the production capacity is improved, and time and labor are saved in the oil scraping process.

Description

Hydraulic oil scraping device for oil fishing

Technical Field

The utility model belongs to the hydraulic equipment in the oil recovery trade, in particular to oil field oil bailing handles crude oil's hydraulic pressure frizing device on wire rope.

Background

In the oil extraction process, because crude oil in a shaft is adhered to an oil fishing steel wire along with the temperature reduction in the operation process, especially a large amount of thick oil is adhered to the surface of a lifting steel wire rope, the phenomenon is particularly serious in the oil well pump detection operation in winter. In the past, a mechanical removing method is adopted, the labor intensity is complicated, time and labor are wasted, crude oil on a steel wire rope is not thoroughly treated, the service life of an oil scraping sleeve is short, and the working efficiency is influenced.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned technique not enough, provide a simple structure, convenient to use, the thorough hydraulic pressure frizing device of salvaging oil of frizing.

The utility model provides a technical scheme that technical problem adopted is: the hydraulic oil scraping device for fishing oil comprises a cylinder barrel, a piston rod, a sealing ring and a joint body, and is characterized in that a locking cylinder head is connected with the inner upper part of the cylinder barrel through threads, the inner hole below the locking cylinder head is connected with the upper end of the piston rod through a dust ring in a sealing way, an oil scraping sleeve is movably arranged in the inner hole of the locking cylinder head, a T-shaped upper pressure pad is arranged on the upper end surface of the oil scraping sleeve, the upper end surface of the upper pressure pad is connected in a groove matched with the upper pressure pad in the locking sleeve, the lower end circular arc surface of the oil scraping sleeve is matched and arranged in the circular arc groove of the pressure pad, the lower end surface of the pressure pad is connected on the upper end surface of the piston rod through the sealing ring, the outer periphery below the piston rod is connected with the inner hole of the lower cylinder head through a guide ring, the outer circumferences of the lower cylinder head and the locking cylinder head are connected with the cylinder barrel through threads, the upper oil port and the lower oil port are arranged on the wall of the cylinder barrel, the two cylinder barrels are communicated with an oil cavity in the cylinder barrel, a piston is fixed on the periphery of the piston, the inner wall of the piston is connected with the sealing ring in a sealing way, the lower end of the piston rod is fixedly connected with a connector body, concentric center holes are formed in the piston rod, the pressure pad, the oil scraping sleeve, the upper pressure pad and the locking sleeve, the diameter of the center hole of the oil scraping sleeve is equal to that of the steel wire rope, and the diameter of the center hole of the piston rod, the pressure pad, the upper pressure pad and the locking sleeve is larger than that of the center hole of the oil scraping sleeve.

The utility model has the advantages that: the sealing performance of the oil bailing hydraulic oil scraping device is good, the safety of well repair operation is guaranteed, the hydraulic device can automatically compensate abrasion of the oil scraping sleeve, manual adjustment is not needed, the oil scraping device can be used for a long time, the oil scraping device is suitable for thick oil exploitation of an oil field, the production capacity is improved, and time and labor are saved in the oil scraping process.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

Fig. 1 is a partial sectional view of the structure of the oil bailing hydraulic oil scraping device.

In the figure, 1-upper pressure pad; 2-locking the cylinder head; 3-a dustproof ring; 4-a cylinder barrel; 5-a piston; 6-sealing ring; 7-oil port; 8-a guide ring; 9-a piston rod; 10-a connector body; 11-lower cylinder head; 12-a pressure pad; 13-oil scraping sleeve; 14-a locking sleeve; 14-1-lock sleeve wrench; a-perforating a steel wire rope; and B-an oil chamber.

Detailed Description

In the embodiment, referring to the attached figure 1, the oil bailing hydraulic oil scraping device is connected with the upper end of a piston rod 9 in a hole below a locking cylinder head 2 through a dust ring 3. An oil scraping sleeve 13 is movably arranged in an inner hole of the locking cylinder head 2, a T-shaped upper pressure pad 1 is arranged on the upper end face of the oil scraping sleeve 13, and the upper end face of the upper pressure pad 1 is connected in a groove matched with the upper pressure pad 1 in the locking sleeve 14. The arc surface at the lower end of the oil scraping sleeve 13 is matched and arranged in the arc groove of the pressure pad 12, and the lower end surface of the pressure pad 12 is connected to the upper end surface of the piston rod 9 through a sealing ring. The periphery of the lower part of the piston rod 9 is connected with an inner hole of a lower cylinder head 11 by a guide ring 8, the lower cylinder head 11 and the outer circumference of the locking cylinder head 2 are fixedly connected with a cylinder barrel 4 by screw threads, the wall of the cylinder barrel 4 is provided with an upper oil port 7 and a lower oil port 7, and the oil ports 7 are communicated with an oil cavity B in the cylinder barrel 4. The piston 5 is fixed on the periphery of the piston rod 9, and the periphery of the piston 5 is hermetically connected with the inner wall of the cylinder 4 by a sealing ring. A joint body 10 is fixedly connected to the lower end of the piston rod 9. The piston rod 9, the pressure pad 12, the oil scraping sleeve 13, the upper pressure pad 1 and the locking sleeve 14 are all provided with concentric center holes, the diameter of the center hole of the oil scraping sleeve 13 is the same as that of the steel wire rope, and the diameters of the other center holes are larger than that of the center hole of the oil scraping sleeve 13. A locking sleeve spanner 14-1 is symmetrically and fixedly arranged on the periphery of the locking sleeve 14.

The utility model discloses a working process is: when the oil bailing hydraulic oil scraping device works, a steel wire rope penetrates through a central hole in the device, the upper pressure pad 1, the oil scraping sleeve 13 and the pressure pad 12 are firstly pressed in the locking cylinder head 2 of the oil cylinder by the locking sleeve 14, and the locking wrench 14-1 is used for manual locking. The coupling body 10 is connected at the wellhead. Then, oil is fished, an oil port 7 at the lower end is filled with oil, the piston 5 is pushed to move upwards, and the sealing ring 6 is used for sealing each part of the oil fishing hydraulic device. The piston rod 9 compresses the pressure pad 12 to compress the oil scraping sleeve 13, the steel wire rope starts to act, and when the steel wire rope is lifted up, the pressure pad 12 compresses the oil scraping sleeve 13, so that the lower end of the oil scraping sleeve 13 is tightened to be held on the steel wire rope, and crude oil on the steel wire rope is scraped. When the steel wire rope falls, the oil inlet 7 on the upper part is filled with oil, so that the piston 5, the piston rod 9 and the oil scraping sleeve 13 are loosened, the steel wire rope can freely fall, and a working cycle is completed.

Claims (1)

1. A hydraulic oil scraping device for oil fishing comprises a cylinder barrel (4), a piston rod (9), a sealing ring (6) and a joint body (10), and is characterized in that a locking cylinder head (2) is in threaded connection with the inner upper part of the cylinder barrel (4), the upper end of the piston rod (9) is hermetically connected in an inner hole below the locking cylinder head (2) through a dust ring (3), an oil scraping sleeve (13) is movably arranged in the inner hole of the locking cylinder head (2), a T-shaped upper pressure pad (1) is arranged on the upper end surface of the oil scraping sleeve (13), the upper end surface of the upper pressure pad (1) is connected in a groove matched with the upper pressure pad (1) in the locking sleeve (14), the lower end arc surface of the oil scraping sleeve (13) is matched in an arc groove of the pressure pad (12), the lower end surface of the pressure pad (12) is connected on the upper end surface of the piston rod (9) through the sealing ring (6), the periphery below the piston rod (9) is connected with an inner hole of the lower cylinder head (11) through a guide ring (8), the outer circumference threaded connection cylinder barrel (4) of lower cylinder head (11) and locking cylinder head (2), establish two hydraulic fluid ports (7) about, on the wall of cylinder barrel (4), two hydraulic fluid ports (7) intercommunication oil pocket (B) in cylinder barrel (4), the peripheral fixed piston (5) of piston rod (9), the inner wall of cylinder barrel (4) is connected with sealing washer (6) sealing to piston (5) periphery, at the lower end fixed connection joint body (10) of piston rod (9), all be equipped with concentric centre bore on piston rod (9), pressure pad (12), oil scraping cover (13), go up pressure pad (1), lock sleeve (14), the centre bore diameter of oil scraping cover (13) and wire rope constant diameter, the diameter of piston rod (9), pressure pad (12), go up pressure pad (1), the diameter of lock sleeve (14) is greater than the diameter of oil scraping cover (13) centre bore.

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