CN200985754Y - Reversing continue sand-flushing device casing in casing - Google Patents

Abstract

An inner reversing casing pipe device for continuous sand scouring comprises an oil pipe fitting, a shell, a gland bush, an annular plug, a hydraulic oil channel, a hollow connector, a chuck ring, a spherical seal, a liner tube hook, a liner tube, an outer casing water inlet, a reversing valve assembly, a sealing rubber ring, a baffle ring, a dowel pin, a three inch short section, a sectionalized guide chase head. The oil pipe fitting is welded with the shell, which is connected with the gland bush by a tread button; the annular plug is pressed in the gland bush through the chuck ring; the hydraulic oil channel is arranged in the chuck ring which is connected with the hollow connector; the chuck ring is arranged on the spherical seal and fixed in the cavity of the shell; the liner tube is fastened with the liner tube hook; the reversing general jacket is provided with the water inlet, the reversing valve assembly and the three inch short section; the sectionalized guide chase head is connected with the liner tube and the sealing rubber ring; the baffle ring is fixedly sleeved with the short section by a dowel pin. The utility model solves the problem that the original device demands implementing with a reversing valve, an elbow and an oil nonane and the communication between the two pipes in present technology and can be used widely in the workover operation of the petroleum and the natural gas development.

Description

Commutation continuous sand flushing device in a kind of sleeve pipe

Technical field:

The utility model relates to the interior commutation of a kind of sleeve pipe continuous sand flushing device that a kind of petroleum and natural gas exploitation workover treatment is used.

Background technology:

The present oil field continuous sand flushing device that workover treatment is used in oil, the construction of natural gas fields, commutation is arranged in the well head sand washing is self-styled, need the commutation pipe nipple is connected the upper end of every sand washing oil pipe, commutation in the commutation of well head is self-styled, the surface line that it exists connects trouble, also needs supporting ground reversal valve, just can finish the not termination of pumping continuous sand flushing operation that makes up a joint with the conducting that commutates back and forth of two inlet line, in the sand washing process, need to disconnect the sand washing elbow and the oily ninth of the ten Heavenly Stems, complex operation, labour intensity is big.

Summary of the invention:

The purpose of this utility model is in order to overcome above-mentioned shortcoming, and the commutation continuous sand flushing device is provided in a kind of sleeve pipe, this device solves need supporting ground reversal valve in the continuous sand flushing device that exists in the prior art, disconnect sand washing elbow and oil ninth of the ten Heavenly Stems, also need the conducting that commutates back and forth of two inlet line, complex operation, the problem that labour intensity is big.Manage continuous sand flushing safely and fast under having realized normally, improved sand washing and returned out effect, reduce labor intensity.

The technical scheme that its technical problem that solves the utility model adopts is: develop commutation continuous sand flushing device in the sleeve pipe and replace the self-styled continuous sand flushing device with ground reversal valve compounding practice of present well head commutation, the not termination of pumping that realizes commutation in the sleeve pipe is pipe sand washing work pattern down continuously, does not need the top of every sand clean out pipe all to connect sand washing oil ninth of the ten Heavenly Stems, elbow and hose; This technical scheme mainly is that development sleeve pipe internal lining pipe, commutation packoff nipple and bank head machinery, the dual compensation of hydraulic pressure are self-styled, replace that present commutation is self-styled, commutation pipe nipple and high pressure reversal valve,, commutation self-styled by bushing pipe and well head compensation seals short circuit and sand washing oil pipe formation seal cavity, arrive the sand washing nib after making liquid import oil pipe, return then, load fluid enters returning between clearancen of bushing pipe, bushing pipe extension and sleeve pipe formation from the distinguish target seeker, is returning out well head by big four.Need to connect in every endowel lower end of sand washing commutation sealing short circuit, not termination of pumping sand washing commutation cycle system continuously in the forming sleeves realizes the operation of not termination of pumping of pipe type continuous sand flushing.

Commutation continuous sand flushing device in a kind of sleeve pipe, by oil connection, housing, gland, ring plug, hydraulic oil channel, hollow joint, pressure ring, packing unit, bushing pipe is hung, bushing pipe, the overcoat inlet opening, reversing valve complement, sealed rubber ring, baffle ring, shop bolt, 3 cun short circuits, the distinguish guide head is formed: oil connection and housing welding, housing and gland screwed connection, ring plug is equipped with joint ring and is pressed in the gland, in gland, be provided with hydraulic oil channel, hollow joint and gland screwed connection, pressure ring is placed on above the packing unit, again packing unit is contained in the cavity of housing, bushing pipe is hung and is suspended in the big four, bushing pipe and bushing pipe are hung screwed connection, outside reversing assembly, put and be provided with the inlet opening, reversing valve complement and 3 cun pipe nipple screwed connections, with sealed rubber ring, baffle ring is enclosed within on 3 cun pipe nipples, and fix distinguish guide head and bushing pipe screwed connection by alignment pin.

The beneficial effects of the utility model are, this device does not need the top of every sand clean out pipe all to connect sand washing oil ninth of the ten Heavenly Stems, elbow and hose, reduces labor intensity; Realize the safe sand washing of normal pipe type, avoid the high-altitude accessory to fall and hurt sb.'s feelings; Because do not have accessories such as top connecting line and elbow, be convenient to sand clean out pipe to align button; Not termination of pumping continuous sand flushing help reducing the sand washing card is run affairs so, return on the not termination of pumping continuous sand flushing and improve sand washing and return out effect, favourable oil well production, economy, environmental benefit are remarkable.

Description of drawings:

Accompanying drawing is the utility model overall structure schematic diagram.

Among the figure by 1, oil connection, 2, housing, 3, gland, 4, ring plug, 5, hydraulic oil channel, 6, hollow joint, 7, pressure ring, 8, packing unit, 9, bushing pipe hangs, 10, bushing pipe, 11, the overcoat inlet opening, 12, reversing valve complement, 13, sealed rubber ring, 14, baffle ring, 15, shop bolt, 16,3 cun pipe nipples, 17, the distinguish guide head.

The specific embodiment:

The utility model is provided by following examples, below in conjunction with accompanying drawing the utility model is described further.

In the accompanying drawings, the commutation continuous sand flushing device is by oil connection 1 in a kind of sleeve pipe, housing 2, gland 3, ring plug 4, hydraulic oil channel 5, hollow joint 6, pressure ring 7, packing unit 8, bushing pipe hangs 9, bushing pipe 10, overcoat inlet opening 11, reversing valve complement 12, sealed rubber ring 13, baffle ring 14, shop bolt 15,3 cun pipe nipples 16, distinguish guide head 17 is formed: oil connection 1 and housing 2 welding, housing 2 and gland 3 screwed connections, ring plug 4 is pressed in the gland 3 by joint ring, in gland 3, be provided with hydraulic oil channel 5, hollow joint 6 and gland 3 screwed connections, pressure ring 7 is placed on above the packing unit 8, again packing unit 8 is contained in the cavity of housing 2, bushing pipe is hung 9 and is suspended in the big four, bushing pipe 10 is hung 9 screwed connections with bushing pipe, outside commutation is total, put and be provided with overcoat inlet opening 11, reversing valve complement 12 and 3 cun pipe nipple 16 screwed connections, with sealed rubber ring 13, baffle ring 14 is enclosed within on 3 cun pipe nipples 16 fixing by shop bolt 15, distinguish guide head 17 and bushing pipe 10 screwed connections.

Claims (1)

1, commutation continuous sand flushing device in a kind of sleeve pipe, by oil connection (1), housing (2), gland (3), ring plug (4), hydraulic oil channel (5), hollow joint (6), pressure ring (7), packing unit (8), bushing pipe is hung (9), bushing pipe (10), overcoat inlet opening (11), reversing valve complement (12), sealed rubber ring (13), baffle ring (14), shop bolt (15), 3 cun pipe nipples (16), distinguish guide head (17) is formed: it is characterized in that: oil connection (1) and housing (2) welding, housing (2) and gland (3) screwed connection, ring plug (4) is pressed in the gland (3) by joint ring, in gland (3), be provided with hydraulic oil channel (51), hollow joint (6) and gland (3) screwed connection, pressure ring (7) is placed on above the packing unit (8), again packing unit (8) is contained in the cavity of housing (2), bushing pipe is hung (9) and is suspended in the big four, bushing pipe (10) is hung (9) screwed connection with bushing pipe, outside commutation is total, put and be provided with overcoat inlet opening (11), reversing valve complement (12) and 3 cun pipe nipples (16) screwed connection, with sealed rubber ring (13), it is upward fixing by shop bolt (15) that baffle ring (14) is enclosed within 3 cun pipe nipples (16), distinguish guide head (17) and bushing pipe (10) screwed connection.

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