CN209742845U

CN209742845U - Wax deposition and scaling prevention device for oil pipe

Info

Publication number: CN209742845U
Application number: CN201920536789.0U
Authority: CN
Inventors: 田振林
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2019-12-06
Anticipated expiration: 2029-04-19

Abstract

The utility model provides an oil pipe prevents wax deposit scale deposit device, including centralizer and vibration shell fragment, centralizer and vibration shell fragment suit outside the sucker rod, whole device is in oil pipe, the centralizer includes first oil guide portion and second oil guide portion, first oil guide portion is the columnar body, set up more than three spiral arch at the surface interval of columnar body, form the spiral between the adjacent spiral arch and lead the oil groove; the second oil guide part is arranged at the oil outlet end of the first oil guide part, the second oil guide part is an annular body, a group of wedge-shaped oil guide slits are symmetrically arranged on the second oil guide part, the outer diameter of the second oil guide part is equal to that of the spiral bulge on the first oil guide part, and annular grooves are arranged at the interval part between the second oil guide part and the first oil guide part; the vibration shell fragment sets up in the second leads the end of producing oil of oil portion, and the oil slit corresponds the setting is led to the wedge to the vibration shell fragment, and the free end of two vibration shell fragments is close to the second and leads the oil slit oil-out of oil portion wedge, and the stiff end of vibration shell fragment is installed on the stationary blade.

Description

Wax deposition and scaling prevention device for oil pipe

Technical Field

The utility model relates to an energy development technical field specifically indicates a wax precipitation scale deposit device is prevented to oil pipe in oil development.

Background

In the process of extracting crude oil, the wax dissolving capacity of the crude oil is continuously reduced along with the reduction of temperature and pressure and the continuous escape of light components, and when certain conditions are reached, wax in the crude oil is separated out, gathered and deposited on the pipe wall of an oil sleeve, a sucker rod, an oil well pump and other pipes and equipment in a crystalline form, namely, the wax precipitation phenomenon occurs.

The paraffin precipitation of oil pipe, sucker rod makes the pit shaft oil outlet passageway internal diameter dwindle gradually, and the flow cross section area diminishes, has increased the oil flow resistance, causes loss of pressure, discharge capacity reduction and pipeline blocking, and the beam-pumping unit load increases, still can induce pipeline local corrosion, causes the pipeline to leak, leads to the pipeline to leak frequently, perforates even, causes the destructive accident, influences the life and the oil pumping efficiency of sucker rod, causes the sucker rod to break when serious, has hindered crude oil production, has caused very big economic loss.

The method is a practical problem which needs to be solved urgently in order to ensure stable production and yield increase of the oil field and reasonably and effectively prevent scaling and wax deposition and becomes a non-negligible problem in oil field development.

At present, aiming at wax and scale prevention in the oil extraction process, the treatment method is roughly divided into three methods: firstly, a well pipe is cleaned by circulating hot water, and the defects that the scaling of the pipe and the rod is easily caused due to the incompatibility of water, and the leakage of rock strata and the scaling and blockage of rock strata near the well are easily caused, so that the production reduction of an oil well is caused, and a series of troubles such as re-perforation, fracturing, acid washing and the like are caused; secondly, chemical agents are added into the oil well, and the oil well has the defects that chemical pollution on oil quality, water quality and ground is easily caused, and meanwhile, some chemical wax inhibitors are inflammable, explosive, toxic and harmful and have potential safety hazards; and thirdly, the underground pipe column is taken out for carrying out ground hot washing or chemical descaling and paraffin removal, production stop operation is carried out, oil extraction loss and construction cost are increased, reservoir oil layer fluctuation causes production reduction, and meanwhile, the environmental protection risk and the pressure of ground treatment are increased. In order to reduce the problems caused by the three treatment modes, in the prior art, a spiral oil guide groove is arranged outside a centralizer of the sucker rod, which increases the turbulence in the oil flow process and slows down the wax deposition and scaling process to a certain extent, but the effect is not obvious enough.

Disclosure of Invention

The utility model discloses aim at solving prior art's defect, provide an oil pipe prevents wax deposition scale deposit device.

The technical scheme of the utility model as follows:

The oil pipe wax and scale prevention device comprises a centralizer and a vibrating elastic sheet, wherein the centralizer and the vibrating elastic sheet are sleeved outside a sucker rod, the centralizer comprises a first oil guide part and a second oil guide part, the first oil guide part is a cylindrical body, more than three spiral protrusions are arranged on the outer surface of the cylindrical body at intervals, and spiral oil guide grooves are formed between every two adjacent spiral protrusions; the second oil guide part is arranged at the oil outlet end of the first oil guide part, the second oil guide part is an annular body, a group of wedge-shaped oil guide slits are symmetrically arranged on the second oil guide part, the outer diameter of the second oil guide part is equal to that of the spiral bulge on the first oil guide part, and an annular groove is arranged at the interval part between the second oil guide part and the first oil guide part; the vibration shell fragment sets up in the second leads the end of producing oil of oil portion, and the oil-out that the oil slit corresponds the setting is led to vibration shell fragment and wedge, and the free end of two vibration shell fragments is close to the second and leads the oil-out of oil portion wedge and lead the oil slit, and the stiff end of vibration shell fragment is installed on the stationary blade, and there is the clearance between the free end of vibration shell fragment and the tip of second oil portion of leading.

The both ends of centralizer set up the navigation key respectively, are close to the fixed cover that the free end setting and navigation key-type connect at the vibration shell fragment, the stationary blade cup joints the tip and the location at fixed cover.

And a compression nut is arranged outside the fixed sheet, and the centralizer and the vibrating elastic sheet are positioned through a positioning key, a fixed sleeve and the compression nut.

The wax and scale prevention and prevention device is arranged on the sucker rod every 100-500 meters.

The centralizer is made of an ultrachord quantum material, the quantum descaling and scale prevention is made of special memory alloy materials with different components and specially modulated, the special memory alloy materials are used as an electrochemical catalyst and provide electrons for a solution system, so that the solution generates an electrochemical effect, molecular vibration waves or metal lattice vibration waves can be emitted, hydrogen bonds among polar particles are opened, the condensation state of the solution is changed, namely the state of a large molecular group is changed into the state of a small molecular group, the dirt of petroleum is in a suspension state, the petroleum is not easy to gather and adsorb on the pipe wall, and the effects of preventing scaling and wax deposition are achieved.

the beneficial effects of the utility model reside in that:

1. Device, under twice section sudden change formed shear stress turbulent flow and vibration shell fragment ultrasonic vibration's effect, play abundant stirring effect to the oil, effectively avoid the wax deposit scale deposit.

2. but prevent wax deposit scale deposit device interval equipartition on whole sucker rod, make the in-process of oil output in defeated oil pipe, repeated constantly obtains the stirring, furthest realizes preventing the wax deposit scale deposit, the well-flushing number of times that significantly reduces prolongs the well-flushing cycle, shortens the downtime to improve oil recovery efficiency, improve oil well output.

3. The utility model discloses owing to adopt pure mechanical structure to realize preventing the wax deposit scale deposit, no magnetism, electroless, no radioactivity and polluted environment fluid reduce the cost and the chemical treatment of oil recovery in-process and the pollution that hot washing led to the fact the environment, the cost is practiced thrift again in the environmental protection promptly.

4. adopt the device, the installation is simple, the maintenance volume is little, long service life can also improve ageing, increase of service life of equipment such as oil-well pump and tubular column indirectly.

Drawings

Fig. 1 is a schematic structural diagram of the device of the present invention;

FIG. 2 is a schematic structural view of the centralizer;

FIG. 3 is a cross-sectional view of the centralizer A;

FIG. 4 is a cross-sectional view of the centralizer B;

FIG. 5 is a side view of a vibrating reed;

FIG. 6 is a left side view of the vibrating reed;

FIG. 7 is a schematic view of the installation of the wax and scale prevention device on the sucker rod;

The numbers and corresponding structure names in the figure are as follows:

1-centralizer, 2-vibrating shrapnel, 3-sucker rod, 4-first oil guide part, 5-second oil guide part, 6-spiral bulge, 7-oil guide groove, 8-wedge-shaped oil guide slit, 9-annular groove, 10-fixing piece, 11-positioning key, 12-fixing sleeve, 13-compression nut, 14-oil pipeline and 15-wax and scale prevention device.

Detailed Description

the present invention will be further described with reference to the accompanying drawings.

example 1

the oil pipe wax and scale prevention device comprises a centralizer 1 and a vibrating elastic sheet 2, wherein the centralizer and the vibrating elastic sheet are sleeved outside a sucker rod 3, the centralizer 1 comprises a first oil guide part 4 and a second oil guide part 5, the first oil guide part is a cylindrical body, more than three spiral protrusions 6 are arranged on the outer surface of the cylindrical body at intervals, and spiral oil guide grooves 7 are formed between the adjacent spiral protrusions 6; the second oil guide part 5 is arranged at the oil outlet end of the first oil guide part 4, the second oil guide part 5 is an annular body, a group of wedge-shaped oil guide slits 8 are symmetrically arranged on the second oil guide part 5, the outer diameter of the second oil guide part is equal to that of the spiral protrusion 6 on the first oil guide part, and an annular groove 9 is arranged at the interval part between the second oil guide part 5 and the first oil guide part 4; vibration shell fragment 2 sets up in the second leads the end of producing oil of oil portion 5, and vibration shell fragment 2 leads oil slit 8 with the wedge and corresponds the setting, and the oil-out of leading oil portion 5 wedge and leading oil slit is close to the second to the free end of two vibration shell fragments 2, and the stiff end of vibration shell fragment is installed on stationary blade 10, and there is the clearance between the free end of vibration shell fragment 2 and the tip of oil portion 5 is led to the second.

The two ends of the centralizer 1 are respectively provided with a positioning key 11, a fixing sleeve 12 connected with the positioning key 11 is arranged at the position, close to the free end, of the vibration elastic sheet 2, and the fixing sheet 10 is sleeved at the end part of the fixing sleeve 12 and positioned.

And a compression nut 13 is arranged outside the fixing piece 10, and the centralizer 1 and the vibrating reed 2 are positioned through a positioning key 11, a fixing sleeve 12 and the compression nut 13.

The wax and asphaltene preventing and scaling device is arranged on the sucker rod 3 at intervals of 100-500 meters, and the distance between the adjacent wax and scaling preventing devices 15 is determined according to the contents of wax, colloid and asphaltene in petroleum, the temperature of a well bore and other factors.

The centralizer is made of an ultrachord quantum material, the quantum descaling and antiscaling is made of special memory alloy materials with different components by means of special modulation, the special memory alloy materials are used as an electrochemical catalyst and provide electrons for a solution system, so that the solution can generate electrochemical action and can emit molecular vibration waves or metal lattice vibration waves, hydrogen bonds among polar particles are opened, the condensation state of the solution is changed, namely the state of a large molecular group is changed into the state of a small molecular group, the dirt of petroleum is in a suspension state and is not easy to be accumulated and adsorbed on the pipe wall, and the effects of preventing scaling and wax deposition are achieved.

The working principle of the utility model is as follows: the first oil guide part 4 faces the oil inlet end of the oil conveying pipe 14, the second oil guide part 5 faces the oil outlet end of the oil conveying pipe 14, in the process that oil is upwards output from the bottom end of the oil inlet pipe 14, the oil firstly passes through the spiral oil guide groove 7 in the first oil guide part and then passes through the annular groove 9, the oil is output from the wedge-shaped oil guide slit 8 in the second oil guide part 4, after the oil is output from the wedge-shaped oil guide slit 8, the vibration elastic sheet 2 is impacted at high speed to enable the vibration elastic sheet to generate high frequency to ultrasonic vibration and then output to the outside of the compression nut 13, the output process of one anti-wax-deposition and scaling device 15 is completed, after the distance of two adjacent anti-wax-deposition and scaling devices is passed, the output process of the next anti-wax-deposition and scaling device 15 is entered, and the oil is continuously repeated from the sucker rod 3 until the.

Because the spiral oil guide grooves 7 are arranged at intervals along the circumferential direction of the cylindrical body, the oil passing section in the spiral oil guide grooves 7 is smaller than that of the annular groove 9, the oil passing sections of the two wedge-shaped oil guide slits 8 are smaller than that of the annular groove 9, the oil passing section is firstly changed from small to large and then is changed to small through the design of the oil guide structure, the oil continuously changes the state of oil flow through the oil passing sections with two sudden changes, the oil flow forms turbulent flow with shearing stress, crystal lattices and long molecular chains are torn under the action of the shearing force in the oil flow, the dispersion effect is realized, the effect of fully stirring the fluid is realized, the solubility is enhanced, and the formation of paraffin and asphaltene is reduced; oil flow enters two wedge-shaped oil guide slits 8 with small cross sections from a large annular groove 9 to form high-flow-rate fluid, the high-flow-rate fluid is ejected at high speed to crush a paraffin crystal structure and a macromolecular chain in crude oil, and simultaneously the high-flow fluid impacts a vibration elastic sheet to generate high-frequency to ultrasonic vibration, so that the elastic sheet generates mechanical vibration action to tear crystal lattices and long molecular chains of crystals; under the continuous extrusion and dispersion action of ultrasonic waves, fluid particles are violently collided with each other, the stirring effect is fully achieved, the solubility of crude oil is enhanced, and the formation of paraffin and asphaltene is reduced. The device of the utility model has the advantages that under the action of shear stress turbulence formed by two-time section mutation and ultrasonic vibration of the vibration elastic sheet, the device can fully stir petroleum, and effectively avoid wax precipitation and scaling; the utility model discloses a wax and scale prevention device 15 can be at intervals on whole sucker rod 3, make the oil export in oil pipeline 14 in-process, repeatedly obtain stirring constantly, furthest realizes preventing the wax and scale formation, greatly reduces the well-flushing number of times, prolongs the well-flushing cycle, shortens the down time, thereby improves oil recovery efficiency, improves oil well output; the utility model adopts a pure mechanical structure to realize wax and scale prevention and has no magnetism, no electricity, no radioactivity and environmental fluid pollution, thus reducing the cost in the oil extraction process and the pollution of chemical treatment and hot washing to the environment, being environment-friendly and saving the cost; adopt the device, the installation is simple, the maintenance volume is little, long service life can also improve ageing, increase of service life of equipment such as oil-well pump and tubular column indirectly.

Claims

1. The wax precipitation and scaling preventing device for the oil pipe is characterized in that: the oil pumping device comprises a centralizer (1) and a vibrating elastic sheet (2), wherein the centralizer and the vibrating elastic sheet are sleeved outside an oil pumping rod (3), the centralizer (1) comprises a first oil guide part (4) and a second oil guide part (5), the first oil guide part is a cylindrical body, more than three spiral protrusions (6) are arranged on the outer surface of the cylindrical body at intervals, and spiral oil guide grooves (7) are formed between the adjacent spiral protrusions (6); the second oil guide part (5) is arranged at the oil outlet end of the first oil guide part (4), the second oil guide part (5) is an annular body, a group of wedge-shaped oil guide slits (8) are symmetrically arranged on the second oil guide part (5), the outer diameter of the second oil guide part is equal to that of the spiral protrusion (6) on the first oil guide part, and an annular groove (9) is arranged at the interval part between the second oil guide part (5) and the first oil guide part (4); vibration shell fragment (2) set up in the second lead the end of producing oil of oil portion (5), vibration shell fragment (2) lead oil slit (8) with the wedge and correspond the setting, and the oil-out that oil slit (8) were led to the free end of two vibration shell fragments (2) is close to the second, and the stiff end of vibration shell fragment is installed on stationary blade (10), and there is the clearance between the tip of oil portion (5) is led to the free end of vibration shell fragment (2) and second.

2. The anti-wax and anti-scaling device for the oil pipe as claimed in claim 1, wherein: the both ends of centralizer (1) set up navigation key (11) respectively, are close to free end department at vibration shell fragment (2) and set up fixed cover (12) of being connected with navigation key (11), stationary blade (10) cup joint the tip and the location of fixed cover (12).

3. the anti-wax and anti-scaling device for the oil pipe as claimed in claim 1, wherein: a compression nut (13) is arranged outside the fixing piece (10), and the centralizer (1) and the vibrating elastic sheet (2) are positioned through a positioning key (11), a fixing sleeve (12) and the compression nut (13).

4. The anti-wax and anti-scaling device for the oil pipe according to any one of claims 1 to 3, wherein: the wax and scale prevention and prevention device is arranged on the sucker rod (3) at intervals of 100-500 meters.

5. The anti-wax and anti-scaling device for the oil pipe as claimed in claim 1, wherein: the centralizer (1) is made of quantum materials.