CN2177089Y

CN2177089Y - Water flushing valve

Info

Publication number: CN2177089Y
Application number: CN 93205811
Authority: CN
Inventors: 黄序韬
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-16
Filing date: 1993-03-16
Publication date: 1994-09-14
Anticipated expiration: 2003-03-16

Abstract

The utility model relates to a water flushing valve which can generate a water flushing (plus) supercharging wave and a water flushing (minus) decompression wave in an oil pipe with pressure or a water pipe with pressure. The water flushing valve is installed on a wellhead device of an oil well or a water well, and is respectively connected with an oil pipe pole, an outlet pipe line of an earth surface pump and an emptying pipe line which leads to an earth surface storage tank. A water flushing valve core which is driven by a speed regulation motor rotates in a valve cover for making the oil pipe pole with pressure alternately communicated with the earth surface pump or the emptying pipe line, and as a consequence, seasonal positive and negative water flushing pressure waves are generated in the oil pipe pole. The oil layer of the oil well or the water well is impacted in a hydraulic mode and is cleaned for achieving the purposes of block removal, slot production, and increased oil yield of the oil well or water injection quantity of the water well.

Description

Water flushing valve

The utility model relates to and a kind ofly can produce water attack increase (+) and press ripple and water attack to subtract the water attack valve of (-) pressure ripple in oil pipe with pressure or water pipe, it is contained on the wellhead assembly of oil-water well, cooperate the well head surface pump, oil reservoir to oil well or well carries out the surge wave impact, cleaning treatment, can remove oil layer blocking, increase the microscopic checks of oil reservoir simultaneously, thereby increase the oil production of oil well or the water injection rate of water injection well.

Past, in order in well, to produce a supercharging surge wave of handling oil reservoir, with oil pipe the hydraulic blow wave producer is arrived oil reservoir position, shaft bottom down, the hydraulic blow wave producer is the steel pipe of a sealing, the bottom upside-down mounting single current valve, ball seat up, with cylindroid helical-coil compression spring ball is pressed on the ball seat, the generator top adds sealing mat up and down with round steel sheet the cavity in the steel pipe is sealed, with pump water or crude oil are suppressed in tubing string during work, when the pressure in the tubing string rises to a certain numerical value, just steel sheet is crushed, the liquid in the tubing string just rushes at the single current valve of generator bottom upside-down mounting with huge pressure and flow velocity, open the valve ball that is headed on by spring, clash with the formation fluid at oil reservoir position, produce the malleation surge wave, hydraulic blow wave producer handling oil layer can produce tangible plugging removal and stimulation effect, but it must remove oil pipe in use, troublesome poeration, and must in tubing string, beat high pressure with surface pump; And every generator next time, can only operate once, can not long-time continuous produce surge wave.

The purpose of this utility model provides a kind of well head that is installed in, and needn't remove water attack generator one water attack valve of oil pipe during use, and it needn't beat high pressure in use in tubing string, can long-time continuous generation surge wave.

Water attack valve is by valve pocket, valve gap, and spool and rolling bearing are assembled.Valve pocket is a both sides centering perforate, Zhi Tong four-way steel pipe up and down.Spool is one and has along axis The hollow cylinder of shape elbow passage, spool garden cylinder and valve pocket form and are slidingly matched, and valve gap is screwed on the valve pocket by screw thread, and spool is locked in the valve pocket.

Operating principle of the present utility model and implementation process are by Fig. 1, and Fig. 2 and Fig. 3 are described below:

Flow chart when Fig. 1 is water attack valve generation malleation surge wave,

Flow chart when Fig. 2 is water attack valve generation negative pressure surge wave,

Fig. 3 is the structure and the flow direction schematic diagram of water attack valve.

As shown in Figure 1, water attack valve ［ 1 ］ is contained in well head with clip and forms a discontinuous open circuit circulation process, production tree ［ 3 ］ is installed on the tubing string with pressure ［ 6 ］, when water attack valve ［ 1 ］ is located in the position shown in the figure 1, surface pump ［ 4 ］ is connected with tubing string ［ 6 ］, the aperture that leads to blow-down pipe ［ 2 ］ on the valve pocket of water attack valve ［ 1 ］ is then blocked by the blind hole of spool, and surface pump ［ 4 ］ is by spool Shape elbow passage is suppressed in tubing string ［ 6 ］ fast, fast and generation (+) water attack supercharging ripple in tubing string.

When water attack valve ［ 1 ］ is in position shown in Figure 2, tubing string with pressure ［ 6 ］ is linked up with blow-down pipe ［ 2 ］, and the aperture that leads to surface pump ［ 4 ］ on the valve pocket of water attack valve ［ 1 ］ is blocked by the blind hole of spool, and pressure in the tubing string ［ 6 ］ just passes through the water attack valve spool

Type passage and blow-down pipe ［ 2 ］ be storage tank ［ 5 ］ quick pressure releasing earthward, and fast reaching produces (-) water attack decompression wave in tubing string ［ 6 ］.

As shown in Figure 3, valve pocket ［ 4 ］ be both sides to split shed, Zhi Tong steel cylinder up and down, spool ［ 5 ］ is one and has along axis The steel cylinder of type elbow passage, the skin friction layer of spool adopts engineering plastics, spool ［ 5 ］ leans on clearance seal with valve pocket ［ 4 ］, for reducing the friction of upper surface and valve gap ［ 3 ］, between the two ends up and down of spool ［ 5 ］ and valve gap ［ 3 ］ and valve pocket ［ 4 ］, be added with rolling bearing ［ 2 ］ respectively, spool ［ 5 ］ is sealed in valve pocket ［ 4 ］ and the valve gap ［ 3 ］, the driving shaft of adjustable speed motor ［ 1 ］ inserts in the groove of spool ［ 5 ］ upper end end face, drive spool ［ 5 ］ with the synchronous rotational speed rotation, make spool

Shape elbow passage alternately with Fig. 1 in surface pump ［ 4 ］ or outlet line ［ 2 ］ connect, tubing string with pressure ［ 6 ］ is periodically connected with surface pump ［ 4 ］ or blow-down pipe ［ 2 ］, make oil or water in surface pump ［ 4 ］, water attack valve ［ 1 ］, carry out discontinuous circulation in the open circuit circulation process that blow-down pipe ［ 2 ］ and above-ground storage tank ［ 5 ］ constitute, the while is at generation water attack (+) the supercharging ripple and water attack (-) decompression wave of tubing string with pressure ［ 6 ］ intercycle.

Claims

1, a kind of water attack valve, it is installed on the wellhead assembly of oil well or well, with pipeline it is become the circulation process of an open circuit with the ground tanks series connection of pumps, it is characterized in that: water attack valve is by valve pocket, valve gap, spool and rolling bearing are assembled, valve pocket is a both sides centering perforate, Zhi Tong four-way steel pipe up and down, spool is a hollow cylinder that has ┌ type elbow passage along axis, the elbow passage communicates with tubing string downwards, upwards and the opposite side of Horizontal Exit be blind hole, the face of cylinder of spool and valve pocket form and are slidingly matched, and valve gap is screwed on the valve pocket by screw thread, and spool is locked in the valve pocket.

2, water attack valve according to claim 1 is characterized in that: the downhand welding of valve gap end face a slice flange, flange is concentric with valve gap, the valve gap top with the flange connection the perpendicular dress motor of adjustable speed.

3, water attack valve according to claim 1, it is characterized in that: have flat-shaped groove blind hole on the spool end face, the driving shaft of the perpendicular dress motor of adjustable speed inserts in the blind hole, a rolling bearing has respectively been adorned in spool top and bottom, it is matrix that spool adopts steel, the spool face frictional layer adopts engineering plastics, adopts gap mechanical seal or filled with carbon fibers sealing between spool and the valve pocket.