CN2202181Y

CN2202181Y - Pulsating water-pressure generating valve for use in oil field water-filling well

Info

Publication number: CN2202181Y
Application number: CN 94214837
Authority: CN
Inventors: 霍金钢; 黄松
Original assignee: Harbin Rainbow Technology Business Co Ltd
Current assignee: Harbin Rainbow Technology Business Co Ltd
Priority date: 1994-06-10
Filing date: 1994-06-10
Publication date: 1995-06-28
Anticipated expiration: 2004-06-10

Abstract

The utility model discloses a pulsating water-pressure generating valve for oil field water-filling well, belonging to the device used for improving the oil extracting output of oil extracted from the deep well. The utility model is composed of a traditional through pressure reducing valve, and an electromagnetic driving device arranged on the tail of the traditional through pressure reducing valve and controlled by a signal generator. The traditional through pressure reducing valve is connected with a water-filling valve of the water-filling well in parallel. The utility model has the advantages of simple structure, lowest cost compared with other vibration devices, convenient installation, controllable pulse effect and resonant effect, convenient management and repair, no environmental influence, convenient operation, and low energy consumption. The utility model can be arranged on the water-filling well mouth or arranged on the point of the water-filling distributing gate in an oil gathering station. The utility model is an ideal device for improving the oil output of oil field.

Description

Pulsating water-pressure generating valve for use in oil field water-filling well

A kind of water injection well in oil fields pulsation hydraulic pressure generation valve belongs to and recovers the oil from deep-well to promoting its output equipment therefor.

The oil field by being sprayed onto water flooding recovery certainly, in order to improve recovery ratio, has used various physics, chemistry even biological method to help to recover the oil as time passes, even so, still has most of oil to stay in the oil reservoir.At present, in physical method, a large amount of methods that adopt vibration: vibration increasing oil tech in the face of land is arranged, down-hole excusing from death vibratory drilling method, down-hole mechanical vibratory drilling method and down-hole shock wave method etc., all obtained certain effect, but, at present the method for oscillating that adopts all has weak point, when vibration vibration generating arrangement in its used missile silo in the missile silo time, is to use downhole tool, though can make vibration directly evoke vibration on this stratum, but its difficulty is bigger, needs device is installed in the down-hole, and difficulty is installed, device is under pressure in the down-hole, temperature, influences such as corrosion, maintain and replace all need to stop production and pull out well.Chinese patent, the patent No. provide a kind of energy-storing-type waterpower pulse injector for 91207925 patent, and this injector is a vibration generating arrangement in the missile silo, and there are the problems referred to above equally in this device.When adopting face of land vibratory drilling method, its device is to use heavy adjustment vibrator, though avoided a series of difficult points of underground vibrating, but its device is big, open work, be subjected to the influence of season and environment, and power consumption big, also have noise, and in marsh, desert and ocean, can't use.

The purpose of this utility model only needs to make before water under high pressure injects water injection well its generation pulse to vibrate a kind of pulsation hydraulic pressure generation valve that its device is arranged on the ground in underground generation for the deficiency of avoiding above-mentioned prior art to exist provides, its pulse frequency, waveform, amplitude and its resonance effect are all adjustable, streamlining management and maintenance, and reduce cost.

The utility model is realized with following technical scheme: it is made of straight-through reducing valve and electromagnetic actuator device, is at the afterbody that leads directly to reducing valve the electromagnetic actuator device that is controlled by signal generator to be installed, and this valve and water injection well gate are in parallel.

Operating principle: be to be based upon to make on the principle basis that oil reservoir vibrated, present water injection well in oil fields is to underground flooding, all are static pressure water fillings, between water injection well and pumpingh well, produce pressure reduction, fluid is flowed to the oil well direction under hydraulic action, As time goes on, obstruction on the approach, water injection pressure is raise gradually, can be by several MPa tens MPa that edge up, pulsation hydraulic pressure generation valve is installed on water injection well, the static pressure water under high pressure that the center pump works is delivered to the water injection well place becomes the water of pulse hydraulic pressure, carries in water injection well then, and the hydraulic pressure of pulsing thus causes a moving hydraulic pressure in water injection well water filling place in the oil reservoir, must evoke the vibration on this stratum, this vibration one is can de-plugging, improves permeability, and it two is that hydraulic pressure is pressure fluctuation meter in oil reservoir, will inevitably influence the redistribution of stress field, realize the oily purpose of living thus.Simultaneously, because water body is under pressure fluctuation meter, its volume also changes with the variation of pressure, forms the post ripple and produce resonance in pipe, and this energy can pass to oil reservoir, also helps the redistribution of stress field, thereby reaches the purpose of volume increase.

The beneficial effect that the utility model had: 1, simple in structure, cost is low, it is on the basis of traditional straight-through reducing valve, installs the electromagnetic actuator device that is controlled by signal generator after transforming.2, easy for installation, the water filling that pulsation hydraulic pressure generation valve can be arranged in water injection well or the oil gathering station distributes the gate place to install, and pulse frequency and vibrating effect can be in indoor regulation and control, because device is arranged on the face of land, manages and easy to maintenance, not affected by environment.3, equipment is simple, and easy operating all need not change original Processes and apparatus.4, since the pulse energy of this device from the water under high pressure of pump works, so itself only consumes electric energy seldom, energy consumption is low.

Describe the utility model in detail below in conjunction with accompanying drawing and most preferred embodiment.

Fig. 1 is water injection well in oil fields pulsation hydraulic pressure generation valve arrangement master sectional view;

Fig. 2 is a water injection well in oil fields water filling water route schematic diagram.

Fig. 1 has provided a kind of most preferred embodiment structural representation of the present utility model, and the electromagnetic actuator device that is controlled by signal generator that it is installed by traditional straight-through reducing valve and afterbody thereof constitutes, and two parts all can be according to required outsourcing.Described straight-through reducing valve is by leaving water inlet P on valve body 2, the valve body 2 ₁, delivery port P ₂, spool 1 is installed in the valve body 2, spring 4 is housed on the spool 1, and determines initial position by set screw 6.Above-mentioned straight-through reducing valve afterbody termination is opened, will be by electromagnetic circuit 7, spring 5 and improve a little make it can be supporting with straight-through reducing valve the electromagnetic actuator device that constitutes of moving-coil 3 install, electromagnetic actuator device can be driven by signal generator, then this valve and water injection well water filling gate is in parallel.Fig. 2 has provided water injection well in oil fields water filling water route schematic diagram.Water under high pressure from pump works, its pressure is shown by water pressure gauge, when the static pressure water filling, a stop valve is arranged in its path, utilize it can control its output pressure and flow, pressure before one pressure meter shows well is arranged before delivering to water injection well, when using pulsation hydraulic pressure generation valve,, produce pulsation hydraulic pressure by pulsation hydraulic pressure generation valve at a static pressure water filling stop valve side path in parallel, send into water injection well, this two path can be used alternatingly.Utilize the expenditure and pressure principle, at P ₁The restriction effect difference by the position difference of piston valve core, thus pressure reduces also different and produces P ₂Come, spring 4 is for keeping spool position in a certain home position, its home position also can be regulated by set screw 6, the reciprocating motion of spool 1 is promoted by the alternating current effect in the moving-coil 3 that is in the magnetic field, moving-coil 3 is driven by a power amplifier, and alternative frequency is supplied with by signal generator, like this regular wave signal of signal generator generation, drive moving-coil 3 through power amplifier, thereby promote spool 1.

Claims

1, a kind of water injection well in oil fields pulsation hydraulic pressure generation valve comprises straight-through reducing valve, it is characterized in that straight-through reducing valve afterbody is equipped with the electromagnetic actuator device that is controlled by signal generator, this valve and and the water injection well gate be in parallel.