CN201241659Y

CN201241659Y - Packer

Info

Publication number: CN201241659Y
Application number: CNU2008201628569U
Authority: CN
Inventors: 胡定清
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-21
Filing date: 2008-08-21
Publication date: 2009-05-20
Anticipated expiration: 2018-08-21

Abstract

The utility model discloses a packer, comprising a central tube, wherein an oil channel is provided in the central tube, an exhaust channel penetrating through the central tube is arranged in the central tube and beside the oil channel, the upper end of the exhaust channel is provided with an exhaust valve controlled by a hydraulic control pipeline accessing to ground, a channel capable of being penetrating by a cable is provided in the central tube, and a cable seal is arranged at the upper end of the cable channel for sealing the cable channel. The packer can realize firm seat seal, discharge the gas in tubes and seal the cable of electric pumps, having wide application in electric pump oil wells of oil production.

Description

A kind of packer

Technical field

The utility model relates to a kind of packer, relate in particular to a kind of can be by the packer of cable.

Background technology

In the electric motor drive oil pump system of oil exploitation, under the borehole pressure conditions of higher, need cable to lead to electric pump again, the gas that produces in the oil recovery needs often discharging, electric pump need be in well the permanent position, these functions do not realize by general packer, therefore, the packer that needs a kind of uniqueness in the electric pump producing well is realized under the borehole pressure conditions of higher fixedly electric pump, is passed through cable, but the function of emission gases at any time.

The utility model content

The technical problem that the utility model solved is the defective that overcomes prior art, provides a kind of seat to secure admittedly, can realize discharging the gas in the oil jacket annular space, makes the electric pump cable pass through and bear the packer of higher well means of press seals.

In order to solve the problems of the technologies described above, the utility model provides a kind of packer, comprise central tube, in described central tube, be provided with the fluid passage, in described central tube inside, described fluid passage side is provided with the exhaust passage through central tube, upper end in described exhaust passage is provided with outlet valve, and described outlet valve is by the liquid controling pipe line control of leading to ground.

In described central tube, be provided with the cable passage that runs through, be provided with the cable envelope in described cable passage upper end.

Retaining mechanism, seat sealing mechanism reconciliation sealing mechanism are installed on described central tube successively, described seat sealing mechanism comprises two packing elements, upper cone, bi-directional slip and lower cone, described pair of packing element contacts with described retaining mechanism, described upper cone contacts with described pair of packing element with lower cone, is provided with bi-directional slip between described upper cone and lower cone.

Described retaining mechanism comprises fluid cylinder, piston and lock ring, and described piston is motion vertically in described fluid cylinder, and described piston and described lock ring are by the retaining thread connection.

The described sealing mechanism of separating comprises and cuts ring and cut ring set that the described ring of cutting is arranged on the tube wall of described central tube, and the described ring set of cutting is arranged on the central tube and the described ring of cutting of suit.

Owing to adopt said structure, the utlity model has following beneficial effect:

1, owing to be provided with upper cone and lower cone respectively in the both sides of slips, when the motive force of piston generation acted on upper cone, slips was realized the bi-directional slip grappling under the bidirection press effect of upper cone and lower cone, made the seat envelope of packer more solid and reliable.

2, owing to adopt two packing elements, make this packer in high-pressure well, realize reliable packing effect.

3, by the opening and closing of control outlet valve, realize gas purging or well-flushing in the oil jacket annular space.

4, owing to be provided with cable passage in central tube, the electric pump cable can pass through, and is sealed by the cable envelope.

Description of drawings

Fig. 1 is the structural representation of the utility model packer;

Fig. 2 is the partial sectional view of the utility model packer.

Mark the following drawings mark thereon in conjunction with the accompanying drawings:

The 1-central tube; 2-fluid passage; The 3-exhaust passage; The two packing elements of 4-; The 5-upper cone; The 6-bi-directional slip; The 7-lower cone; The 8-fluid cylinder; The 9-piston; The 10-lock ring; 11-retaining screw thread; 12-cuts ring; 13-cuts ring set.

The specific embodiment

As shown in Figure 1, the utility model packer comprises central tube 1, is provided with fluid passage 2 in central tube 1, and in central tube 1, the side of fluid passage 2 is provided with exhaust passage 3, exhaust passage 3 is through central tube 1, and its end extends to the end of central tube 1.3 upper end is connecting outlet valve in the exhaust passage, and this outlet valve is opened or closed by the liquid controling pipe line control of leading to ground.Upper end at central tube 1 is connecting cable conduit.The electric pump cable passes through in cable conduit, has realized cable seal.

As shown in Figure 2, retaining mechanism, seat sealing mechanism reconciliation sealing mechanism are installed successively on central tube 1.Retaining mechanism comprises fluid cylinder 8, piston 9 and lock ring 10, and piston 9 is motion vertically in fluid cylinder 8, and piston 9 connects by retaining screw thread 11 with lock ring 10.The seat sealing mechanism comprises two packing elements 4, upper cone 5, bi-directional slip 6 and lower cone 7.In the present envelope process, suppress in the oil pipe, piston 9 motions, hydraulic coupling promotes the two packing elements 4 of piston 9 extruding, makes two packing element 4 Expansion sealing oil jacket annular spaces, and produced simultaneously motive force acts on upper cone 5, and cone is radially released bi-directional slip, is stuck on the center tube wall.Bi-directional slip 6 is realized the bi-directional slip grappling under the bidirection press effect of upper cone 5 and lower cone 7, make the seat envelope of packer more solid and reliable.

Separate sealing mechanism and comprise and cut ring 12 and cut ring set 13, cut ring 12 and be arranged on the tube wall of central tube 1, cut ring set 13 and be arranged on the central tube 1 and suit is cut ring 12.When deblocking, upper lifting pipe post 16 (as Fig. 1) is cut off deblocking and is cut ring, can realize the packer deblocking.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this manual has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.

Claims

1, a kind of packer, comprise central tube, in described central tube, be provided with the fluid passage, it is characterized in that: in described central tube inside, described fluid passage side is provided with the exhaust passage through described central tube, is provided with outlet valve in the upper end of described exhaust passage.

2, packer according to claim 1 is characterized in that: be provided with the passage that can run through cable in described central tube, be provided with the cable envelope in cable passage upper end.

3, packer according to claim 1 and 2, it is characterized in that: retaining mechanism, seat sealing mechanism reconciliation sealing mechanism are installed on the tube wall of described central tube successively, described seat sealing mechanism comprises two packing elements, upper cone, bi-directional slip and lower cone, described pair of packing element contacts with described retaining mechanism, described upper cone contacts with described pair of packing element with lower cone, is provided with bi-directional slip between described upper cone and lower cone.

4, packer according to claim 3 is characterized in that: described retaining mechanism comprises fluid cylinder, piston and lock ring, and described piston is motion vertically in described fluid cylinder, and described piston and described lock ring are by the retaining thread connection.

5, packer according to claim 4 is characterized in that: the described sealing mechanism of separating comprises and cuts ring and cut ring set that the described ring of cutting is arranged on the tube wall of described central tube, and the described ring set of cutting is arranged on the central tube and the described ring of cutting of suit.