CN101270636B

CN101270636B - Oil well dirty-blocking device

Info

Publication number: CN101270636B
Application number: CN200710038228XA
Authority: CN
Inventors: 麦天辅
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-20
Filing date: 2007-03-20
Publication date: 2011-07-20
Anticipated expiration: 2027-03-20
Also published as: CN101270636A

Abstract

The invention provides an anti-dirt device for an oil well, consisting of a winding magnetic field exciter and a wobbling broad spectrum electromagnetic driver. The winding magnetic field exciter is a non-magnetic conductor pipeline winded by 2 to 50 sectional type windings outside. The non-magnetic conductor pipeline is arranged at the branch of a floor outlet of an oil well production tree. When current is switched on, 4 to 100 contrarily-tanspositional poles, the magnetic intensity and the variation frequency of which are controlled, are continuously produced. After the standard voltage with sinusoidal wave form is certificated and changed by the wobbling broad spectrum electromagnetic driver, the impulsive current with pulse excitation waveform containing broad spectrum ultra harmonics and ultra-low frequency of 0.5 to 10Hz periodic change is output. The impulsive current is used as the power supply source of the winding magnetic field exciter. The anti-dirt device can activate liquid molecule in a petroleum pipe, inhibit wax and dirt from separating out and clear away the dirt that sticks to pipe wall. The anti-dirt device has no apparatus in which crude oil soaks and that is put into the pipe by which the crude oil passes. So the anti-dirt device does not create pollution and achieves quick results and remarkable economic benefit.

Description

Oil well dirty-blocking device

Technical field

The present invention relates to a kind of to oil well " comprehensive dynamic process " design down, the designed antiscaling device that goes out.

Background technology

World's oil industry is subjected to well casing to amass the puzzlement of wax, incrustation for a long time.Amass the cured pump rod that causes and sting resistance, mud dirt aggregation causes the pump rod wearing and tearing and quickens, and causes oil production to reduce, and must shut down stops production carries out dosing except that cured, causes the chemical contamination of environment; When fouling is serious, also to use the hot water well-flushing.Moreover, existing mechanical type paraffin scraper, not only time-consuming, the consumption energy consumption thing, and also the paraffin removal effect is unsatisfactory.

Be to improve output, more existing technology are used materialization principles such as electromagnetic fields, ultrasonic wave, adopt corresponding inductor according to concrete object, and the isolate molecule of incrustation of commute encourages activation, lower the probability of its incrustation, but effect is unsatisfactory.The cable that for example Chinese utility model patent CN99250279.9 " oil well paraffin removal device " adopts hoist engine will connect the pulse signal emitter places the down-hole, will connect pulse signal by transducer and convert ultrasonic wave to and carry out the down-hole wax removal.Crude oil pipeline is inner could work but this device need be placed into.

Summary of the invention

The purpose of this invention is to provide a kind of reduction oil viscosity, prevent that paraffin from separating out, the work of deduction and exemption well-flushing improves oil flowing velocity in oil pipe, and the oil well Zu Gou Installed that improves oil production rate and transfer efficiency puts.

Technical scheme of the present invention is as follows.

A kind of oil well dirty-blocking device, by winding magnetic field excitation device with wave wide spectrum electromagnetic excitation charger and constitute,

Described winding magnetic field excitation device is one section non-magnetic conductor pipeline outside at oil well Bian oil tree floor outlet branch, m (m is the natural number between 2～50) segmented winding makes to produce SNSNSN under "on" position around the home ... the 2m of a continuous phase decommutation magnetic pole like this;

The described wide spectrum electromagnetic excitation charger that waves is imported with normal voltage, through rectifying conversion, output contain the wide spectrum higher hamonic wave and (or) pulse current of the pulse excitation waveform of ultra-low frequency 0.5～10Hz cycle variation, as the power supply source of winding magnetic field excitation device.

Described winding magnetic field excitation device can be taked connections such as each segmented windings in series, parallel connection or Xiang Zhen according to different fluid and different treatment characteristic requirements, cooperates corresponding energising excitation, to produce the electromagnetic field of varying strength and different change frequencies.

The described wide spectrum electromagnetic excitation charger rectifying conversion that waves, it is evoked potential with a ultra-low frequency 0.5～10Hz cycle variation, remove to control the angle of flow of bridge rectifier IGCT, make former sinusoidal power frequency waveform when rectification is exported, along with the cycle changes the angle of flow generation different forward position waveform of variation continuously.Preferred scheme is, output current is to have a pulse excitation source that approximate square wave front edge characteristic and angle of flow cycle change after rectification, and such changes ripple and contains the wide spectrum higher hamonic wave as can be known to count analysis by the Fu Li leaf-size class.

The described wide spectrum electromagnetic excitation charger rectifying conversion that waves, it is evoked potential with a ultra-low frequency 0.5～10Hz cycle variation, remove to control the angle of flow of bridge rectifier IGCT, make former sinusoidal power frequency waveform when rectification is exported, along with the cycle changes the pulse excitation waveform that the angle of flow produces ultra-low frequency 0.5～10Hz cycle variation.

Oil well dirty-blocking device of the present invention also is furnished with temperature feedback controller and pulse choice control and regulation device, with regulation and control magnetic field intensity, initial value and pulse change frequency.

Confirm through practice, the pulse current that contains the wide spectrum higher hamonic wave, the low high-frequency loss winding that cooperates low distribution capacity, the suitable intensity of control excitation inductor, can be to the most molecular energy level of fluid in the pipeline, conformation, transition probability is received optimum activation effect, be reflected in viscosity of crude and descend, pump speed and raise.Simultaneously, the pulse excitation electric current of ultra-low frequency 0.5～10Hz cycle variation, under the situation of appropriately choosing inductor segmentation winding distribution value and number of ampere turns, can in pipeline fluid, produce little hydraulic effect that springs up, thereby the fouling of uniting to mostly having isolated in pipe long-distance is received in the dirt of tube wall and is peeled off effect, be reflected in the pump resistance and lower, the drive motors electric current descends.

Be positioned at outside the pipeline of one section non-magnetic conductor of about 80cm of Bian oil tree floor outlet branch segmented winding around the home, make fluid in the flow process of the continuous magnetic pole phase of short distance decommutation, produce the ultra-low frequency Micropump and press effect, add the suitable earth's magnetic field of high frequency that pulse excitation magnetic oscillation field nationality magnetic conductivity pipeline transmits, just can be with 500 watts excitation power consumption only, in depth down in hundreds of meters the pipeline fluid apply effective molecule excitation activating effect.Specifically, dispose the distribution distance and the number of turn and winding connection mode of different windings according to different fluid.

For example: adopt 5 sections windings then to produce 10 utmost points of SNSNSNSNSN continuous transformation, the field-effect during fluid is passed through this section by pump pressure is as follows:

(1) the SN magnetic pole constantly changes;

(2) frequency of high frequency higher hamonic wave is constantly being waved variation;

(3) by zero or set the ultra-low frequency modulated magnetic field that cycle that base value rises to appropriate excitation density changes.

Utilize the not uniform property of magnetic conductivity particulate in the fluid cross-section, particularly mix the crude oil that clips stratum sewage dirt more big-difference is arranged, flow through with common different in the past: the on-fixed magnetic pole and magnetic field, non-constant frequency, non-constant gaussian intensity, non-sinusoidal waveform or pure pulse excitation, also non-ly singly be high frequency or singly be low-frequency excitation, but the pulse of high frequency higher hamonic wave is during by the comprehensive dynamic magnetic field of the ultra-low frequency of 0.5～10Hz modulation, fluid magnetic conductor inequality is geomagnetic into non-uniform magnet, fluid viscosity hinders its moment reorganization again, so doing to continue pump pressure in winding moves, to bring out the non-electric potential field that all claims, the former in the axisymmetrical magnetic field disturbance of equilibrium of design appears, irregular interference and distortion appear, the particulate that liquid crude is magnetized is made the irregular wriggling of ultra-low frequency and springs up (to adopt springing up of particulate under the De Gao Frequency exciting field usually, transmit apart from extremely short and promptly is absorbed; And fixed field commonly used do not have phase place folded increase or offset imitate), the little little hydraulic effect that springs up that springs up the transmission of nationality pipeline of this ultra-low frequency is united in the tube wall dirt to analysing, there is the bigger efficient that clears the constant high frequency field of using always.

Another advantage of the present invention is without any mixing into or insert the device of crude stream through pipe interior, and the one section non-magnetic conductor pipeline outside that only relies on Bian oil tree floor outlet branch is the segmented winding around the home, and adding the electromagnetic excitation charger can realize.

Description of drawings

Fig. 1 is the present invention program's a schematic diagram.

Among the figure: 1-winding magnetic field excitation device; 2-round-the-clock ten core connectors; 3-electromagnetic excitation charger.

The specific embodiment

Describe the present invention in detail below by preferred embodiment, but do not limit the scope of the invention.The ordinary skill of this area is according to content of the present invention, and some nonessential improvement and adjustment to the present invention has done still belong to protection scope of the present invention.

5 sections windings around the home in the pipeline outside of one section non-magnetic conductor of about 80cm of production tree floor outlet branch form winding magnetic field excitation device (1).Winding magnetic field excitation device (1) is realized being electrically connected by round-the-clock ten core connectors (2) with electromagnetic excitation charger (3).Electromagnetic excitation charger (3) inside comprise 0～10Hz low frequency pulsating oscillator, controllable silicon phase shift trigger, phase discriminator, VCO pressure controller, frequency divider, phase-locked to serial vein dash, electronic units such as microprocessor, controllable silicon bridge-type commutating pulse driver.Adjust the protection of IGCT back-emf and hold resistance; make behind the former sinusoidal power frequency normal voltage input electromagnetic excitation charger (3) with 220～660AVC/50Hz, be output as and have the pulse excitation source that approximate square wave front edge characteristic and angle of flow cycle change the pulse excitation of (such changes ripple and contains the wide spectrum higher hamonic wave as can be known to count analysis by the Fu Li leaf-size class) and ultra-low frequency 0.5～10Hz cycle variation.

When passing through electromagnetic excitation charger (3) when winding magnetic field excitation device (1) is powered, produce 10 utmost points of SNSNSNSNSN continuous transformation between the winding pipe line area, when fluid by pump pressure by this SN magnetic pole constantly change, the frequency of high frequency higher hamonic wave is during at the ultra-low frequency modulated magnetic field that constantly waves variation, changed by the cycle that rises to appropriate excitation density above freezing, fluid magnetic conductor inequality is geomagnetic into non-uniform magnet, the particulate that liquid is magnetized the irregular wriggling of ultra-low frequency occurs and springs up, and separates out or unites in the dirt of tube wall thereby clear.

Load onto antiscaling device test of the present invention with behind the model machine, the oil-well motor electric current does not rise counter falling, and reflection down-hole wax deposition situation reduces; Oil yield increases to some extent, and reflection down-hole viscosity of crude descends; Minus is few for motor-driven resistance power, and the long-pending La Jing of height that originally must shut down dosing in per 15 days throughout the year or wash has now surpassed 4 times of fates and do not occurred the drive current rising yet, and long-pending cured phenomenon is not arranged.At present still in the Zui Long timeliness of test.

Claims

1. oil well dirty-blocking device is characterized in that it is by winding magnetic field excitation device with wave wide spectrum electromagnetic excitation charger and constitute:

Described winding magnetic field excitation device is one section non-magnetic conductor pipeline outside at well recovery tree floor outlet branch, m segmented winding around the home, make and under "on" position, produce SNSNSN ... the 2m of a continuous phase decommutation magnetic pole like this, m is the natural number between 2～50;

The described wide spectrum electromagnetic excitation charger that waves is imported with normal voltage, and through rectifying conversion, output contains the pulse current of the pulse excitation waveform of wide spectrum higher hamonic wave and ultra-low frequency 0.5～10Hz cycle variation, as the power supply source of winding magnetic field excitation device.

2. oil well dirty-blocking device according to claim 1, it is characterized in that described winding magnetic field excitation device, according to different fluid and different treatment characteristic requirements, take each segmented windings in series, parallel connection or phase battle array connection, cooperate corresponding energising excitation, produce the electromagnetic field of varying strength and different change frequencies.

3. oil well dirty-blocking device according to claim 1 and 2, it is characterized in that the described wide spectrum electromagnetic excitation charger rectifying conversion that waves, it is evoked potential with a ultra-low frequency 0.5～10Hz cycle variation, remove to control the angle of flow of bridge rectifier IGCT, make former sinusoidal power frequency waveform when rectification is exported, along with the cycle changes the angle of flow generation different forward position waveform of variation continuously.

4. oil well dirty-blocking device according to claim 3, it is characterized in that described to wave output current behind the wide spectrum electromagnetic excitation charger rectifying conversion be to have a pulse excitation source that approximate square wave front edge characteristic and angle of flow cycle change, such changes ripple and contains the wide spectrum higher hamonic wave as can be known to count analysis by the Fu Li leaf-size class.

5. oil well dirty-blocking device according to claim 4, it is characterized in that the described wide spectrum electromagnetic excitation charger rectifying conversion that waves, it is evoked potential with a ultra-low frequency 0.5～10Hz cycle variation, remove to control the angle of flow of bridge rectifier IGCT, make former sinusoidal power frequency waveform when rectification is exported, along with the cycle changes the pulse excitation waveform that the angle of flow produces ultra-low frequency 0.5～10Hz cycle variation.

6. oil well dirty-blocking device according to claim 5 is characterized in that this device is furnished with the temperature feedback controller and pulse choice controls to adjust device, with regulation and control magnetic field intensity, initial value and pulse change frequency.