CN104329052A - Oil-well mechanical wave eddy viscosity-reduction paraffin-proof device - Google Patents
Oil-well mechanical wave eddy viscosity-reduction paraffin-proof device Download PDFInfo
- Publication number
- CN104329052A CN104329052A CN201410689986.8A CN201410689986A CN104329052A CN 104329052 A CN104329052 A CN 104329052A CN 201410689986 A CN201410689986 A CN 201410689986A CN 104329052 A CN104329052 A CN 104329052A
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- Prior art keywords
- vibrating reed
- oil
- wax
- rod
- vibrating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
Abstract
The invention provides an oil-well mechanical wave eddy viscosity-reduction paraffin-proof device and relates to an oil extraction auxiliary device. The invention aims to provide the oil-well mechanical wave eddy viscosity-reduction paraffin-proof device with an obvious paraffin precipitation preventing effect. The oil-well mechanical wave eddy viscosity-reduction paraffin-proof device comprises an upper joint, a central rod and a lower joint, wherein the upper joint, the central rod and the lower joint are fixedly connected in turn from top to bottom; multiple layers of vibrating slice sets are arranged on the outer surface of the central rod in a parallel form from top to bottom; four fan-shaped vibrating slices in identical shape are contained in each layer of vibrating slice sets; a gap is arranged between every two adjacent vibrating slices; the gaps in the two adjacent layers of vibrating slices are staggered for 45 degrees along the circumference of the central rod; the vibrating frequency of the vibrating slices is 24Hz.
Description
Technical field
The present invention relates to a kind of oil recovery auxiliary equipment, particularly relate to a kind of device preventing oil well Crude Oil wax deposition.
Background technology
The process of oil extraction is exactly the process crude oil in stratum being given rise to ground.General under reservoir condition, all containing a certain amount of wax in crude oil, these wax components are all in dissolved state.In recovery process, for the crude oil being dissolved with a certain amount of paraffin, along with the reduction of temperature, pressure and the precipitation of gas, the paraffin of dissolving is just with crystallization.Along with the further reduction of temperature, paraffin crystal amount of precipitation increases, and its crystallization is just grown up and assembled and be deposited on tube wall, namely occurs so-called wax deposition phenomenon.
Wax deposition phenomenon can bring a lot of harm, first, concerning flowing well, the reduced of flowline can be made even to block, thus oil well output is successively decreased or stops production.Again, on rod pumped well, wax deposition, except making flowline internal diameter and reducing, also can make deep well pump malfunctioning, can make pump seizure time serious, damages pumping unit.If wax deposition phenomenon occurs near perforated interval also can block oil flow channel in stratum, reduce capacity of oilwell, reduce oil well output.
Therefore, oil well paraffin prevention just seems very important in oil extraction process, and the oil well that especially content of wax is high must carry out wax control measure in recovery process.Wax control measure common at present has following several:
(1) mechanical paraffin removal method: this method is to remove the waxy substance deposited in oil pipe, sucker rod and petroleum pipeline in the mode of mechanical scraping.The major defect of this mode is that the long-pending wax removed easily falls into shaft bottom, plugged perforation or near wellbore formation; To the serious wear of equipment, increase load, sometimes even can cause wax card and carry out stopping well operations, in addition, this mode is " processing " afterwards, and cannot prevent in advance and eliminate wax deposition, be a kind of passive processing mode.
(2) heating power wax removal: this method is that the wax making knot long-pending by heater means is subject to thermal softening, fusing, is finally carried with oily stream, reaches the object of Paraffin Removal.Problem existing for this mode is that down-hole heater technology does not pass a test, and once investment is large, consumes energy high.
(3) paraffin removing with chemical method method: this method utilizes that various chemical agent carries out clearly, wax control exactly.The Paraffin Removal effect of paraffin removing with chemical method method is all right, but this mode also has shortcoming, and one be oil well production situation is not unalterable, and two is that best continuous dosing mode is difficult to realize aborning.
(4) magnetic wax removal method: the know-why of this mode utilizes magnetic effect, to the wax molecular polarization in magnetic field be flowed through, thus suppress the crystallization of wax, make wax in oil in suspended state, avoid depositing on oil pipe, underground equipment or petroleum pipeline, reach wax control object.But the structural parameters of the shortcoming magnetic paraffin control device of this mode are relevant with factors; And many factors are constantly changes in oil well production process.
Therefore, if having a kind of successful, the wax-preventing method that easy to use, applicability is strong, the oil extraction efficiency of the serious well of wax deposition will be improved greatly.Chinese utility model patent CN 2929168Y discloses one " disk type eddy oscillating viscosity-reduction paraffin control device for use in sucker rod ", this wax control device Shi center body of rod installs 10 ~ 18 pieces of disk type vibrating reeds side by side, by the joint at the center body of rod upper and lower two ends, the center body of rod is fixedly connected in sucker rod, in the upper and lower running of sucker rod, shear agitation effect is produced between vibrating reed and liquid, liquid viscosity is caused to reduce, the multifrequency vibration ripple simultaneously produced is propagated liquid generation effect in a liquid, destroy wax-crystal structure, reduce the object that viscosity of crude reaches wax-proof viscosity reducing.Although this patent can reach the object of Wax proofing from principle analysis, the wax control device made according to this patent can not obtain Wax proofing effect desirable especially in actual application.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of oil machinery ripple eddy current adhesion reducing and wax preventing device of Wax proofing Be very effective.
Oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention, comprise top connection, the center body of rod and lower contact, described top connection, the center body of rod and lower contact are fixedly connected sequentially from top to bottom, the external surface of the described center body of rod is arranged with some layers of vibrating reed group from top to bottom in parallel, wherein said every layer of vibrating reed group comprises the identical fan-shaped vibrating reed of four plate shapes, gap is provided with between adjacent two pieces of vibrating reeds, gap in adjacent two layers vibrating reed group interlocks 45 ° in the circumference of the center body of rod, and the vibration frequency of described vibrating reed is 24Hz.
Oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention, the external diameter of the wherein said center body of rod is 25.3 ~ 25.5mm, distance between described adjacent two layers vibrating reed group is 60mm, often the gap width organized in vibrating reed group between adjacent vibrating reed is 3 ~ 4mm, the external diameter of described vibrating reed is 19 ~ 30mm, the thickness of vibrating reed is 1mm, and the material of vibrating reed is BZn18-26 trade mark nickel silver alloy.
Oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention, wherein said vibrating reed group totally 20 groups.
Oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention, the two ends up and down of the wherein said center body of rod are installed with supporting disk respectively, described supporting disk comprises support ring and some ribs, one end of described rib is fixedly connected on the body of rod of center, the other end is fixedly connected on support ring, and the external diameter of described support ring is greater than the external diameter of vibrating reed.
Oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention, the thickness of wherein said supporting disk is 5mm, and the width of described support ring is 4mm, and the width of described rib is 4mm.
Oil machinery ripple eddy current adhesion reducing and wax preventing device difference from prior art of the present invention is that oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention specify that the CF that the self-oscillation of vibrating reed produces, the mechanical wave produced under this frequency to crude oil in paraffin wax-crystal structure destroy maximum, Wax proofing most pronounced effects.This CF of 24Hz is produced in order to enable vibrating reed, again special design is carried out to the geomery of vibrating reed in the program and material, enable vibrating reed in oil well, produce the vibration wave of CF to crude oil, and the erosion-resisting requirement of oil well rig can also be reached.Gap wherein in adjacent two layers vibrating reed group staggered 45 ° of objects in the circumference of the center body of rod improve when produced liquid in oil well flows through vibrating reed group to form stronger eddy current.
In oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention, the two ends of the center body of rod are provided with the object of supporting disk is to protect vibrating reed; preventing vibrating reed from the process of moving up and down, colliding oil well inwall makes vibrating reed produce damage; simultaneously; the engraved structure that supporting disk adopts support ring and rib to form, is conducive to crude oil and flows through.
Below in conjunction with accompanying drawing, oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the front view of oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention;
Fig. 2 is the sectional view at A-A place in oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention;
Fig. 3 is the sectional view at B-B place in oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention.
Detailed description of the invention
As shown in Figure 1, oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention comprises top connection 1, the center body of rod 2 and lower contact 3, top connection 1, the center body of rod 2 and lower contact 3 are fixedly connected sequentially from top to bottom, the external diameter of the center body of rod 2 is 25.3 ~ 25.5mm, the external surface of the center body of rod 2 is arranged with 20 layers of vibrating reed group from top to bottom in parallel, distance between adjacent two layers vibrating reed group is 60mm, every layer of vibrating reed group comprises the identical fan-shaped vibrating reed 4 of four plate shapes, the external diameter of vibrating reed 4 is 19 ~ 30mm, the thickness of vibrating reed 4 is 1mm, the material of vibrating reed 4 is BZn18-26 trade mark nickel silver alloy, the vibration frequency of vibrating reed 4 is 24Hz.As shown in Figure 2, be provided with gap between adjacent two pieces of vibrating reeds 4, gap width is 3 ~ 4mm, and the gap in adjacent two layers vibrating reed group interlocks 45 ° in the circumference of the center body of rod 2.The two ends up and down of the center body of rod 2 are installed with supporting disk 5 respectively, as shown in Figure 3, supporting disk 5 comprises support ring 51 and 4 radial ribs 52, one end of rib 52 is fixedly connected on the center body of rod 2, and the other end is fixedly connected on support ring 51, and the external diameter of support ring 51 is greater than the external diameter of vibrating reed 4, the external diameter of support ring 51 is less than pipe aperture 8mm, the thickness of supporting disk 5 is 5mm, and the width of support ring 51 is 4mm, and the width of rib 52 is 4mm.
Oil machinery ripple eddy current adhesion reducing and wax preventing device of the present invention is connected with sucker rod by the connecting thread that top connection and lower contact are arranged in use, first the paraffin-troubled well section of the serious well of wax deposition is confirmed, then start, every 5 sucker rods, a wax-proofing apparatus of the present invention is installed in the bottom starting point of paraffin-troubled well section.As shown in table 1, have chosen 3 mouthfuls of wells at the serious block of the wax deposition of Jiangsu oilfield and carry out on-the-spot application experiment, experimental result shows, after applying wax-proofing apparatus of the present invention, because wax control result is obvious, stop the number of times of well inspection pump before decreasing because of wax deposition, relatively add crude output, also make the power consumption of oil pumper have obvious saving simultaneously.
Table 1
Best in order to verify the effect of the decreasing and wax-coagulation-preventing device under the vibration frequency of 24Hz of the vibrating reed in wax-proofing apparatus of the present invention, inventor herein devises two cover experimental facilities.First set experimental facilities comprises a segment length 8m, and the pipeline of the transparent resin material of internal diameter 84mm, to simulate oil pipe, is filled with experiment liquid in pipeline, and the composition of this liquid adopts the composition proportion of the crude oil production fluid of Shengli Oil Field high wax containing well to form.Pipe ends is connected to pipeline and forms loop, and hydraulic pump is equipped with in loop, tests liquid and circulates in the loop, the flowing of crude oil in simulation oil well by hydraulic pump drive.A set of oscillation source generating means that can produce different frequency is added in pipeline, in pipeline, be provided with experiment lacing film, the effect of lacing film is weighed afterwards on pretreatment, the wax deposition amount in experiment with computing process on lacing film simultaneously, wax deposition amount is less, illustrates that wax control result is better.Experimental period is 72 hours, weighs after 72 hours to lacing film, calculates lacing film wax deposition amount.As can be seen from Table 2, in time having oscillation effect to load, lacing film wax deposition amount will have than dead-beat condition and significantly reduce, when vibration frequency at 24Hz time, the wax deposition amount on lacing film is minimum, illustrates that wax control result is best under this frequency.
Wax deposition amount under table 2 different frequency
Vibration frequency due to vibrating reed is subject to the factor impacts such as vibrating reed shape, material, in order to the vibration frequency enabling vibrating reed reach 24Hz, the present inventor devises again the second cover experimental facilities, waterpower self-oscillation is utilized to select to produce the vibrating reed of 24Hz vibration frequency, adopting the vibrating reed of difformity and material to carry out oscillation experiment, is the good several groups of vibrating reeds of Wax proofing effect in table 3.
The frequency of the different vibrating reed of table 3 and wax deposition amount
Wherein, the BZn18-26 trade mark nickel silver alloy sheet that the 2nd group of 1mm adopted is thick, the Wax proofing effect of 90 degree of fan-shaped vibrating reeds is best, and meanwhile, the anti-corrosion effects of nickel silver alloy sheet under oil well is also best.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (5)
1. an oil machinery ripple eddy current adhesion reducing and wax preventing device, comprise top connection (1), the center body of rod (2) and lower contact (3), described top connection (1), the center body of rod (2) and lower contact (3) are fixedly connected sequentially from top to bottom, the external surface at the described center body of rod (2) is arranged with some layers of vibrating reed group from top to bottom in parallel, it is characterized in that: described every layer of vibrating reed group comprises the identical fan-shaped vibrating reed (4) of four plate shapes, gap is provided with between adjacent two pieces of vibrating reeds (4), gap in adjacent two layers vibrating reed group interlocks 45 ° in the circumference of the center body of rod (2), the vibration frequency of described vibrating reed (4) is 24Hz.
2. oil machinery ripple eddy current adhesion reducing and wax preventing device according to claim 1, it is characterized in that: the external diameter at the described center body of rod (2) is 25.3 ~ 25.5mm, distance between described adjacent two layers vibrating reed group is 60mm, often the gap width organized in vibrating reed group between adjacent vibrating reed (4) is 3 ~ 4mm, the external diameter of described vibrating reed (4) is 19 ~ 30mm, the thickness of vibrating reed (4) is 1mm, and the material of vibrating reed (4) is BZn18-26 trade mark nickel silver alloy.
3. oil machinery ripple eddy current adhesion reducing and wax preventing device according to claim 2, is characterized in that: described vibrating reed group 20 groups totally.
4. oil machinery ripple eddy current adhesion reducing and wax preventing device according to claim 3, it is characterized in that: the two ends up and down at the described center body of rod (2) are installed with supporting disk (5) respectively, described supporting disk (5) comprises support ring (51) and some ribs (52), one end of described rib (52) is fixedly connected on the center body of rod (2), the other end is fixedly connected on support ring (51), and the external diameter of described support ring (51) is greater than the external diameter of vibrating reed (4).
5. oil machinery ripple eddy current adhesion reducing and wax preventing device according to claim 4, it is characterized in that: the thickness of described supporting disk (5) is 5mm, the width of described support ring (51) is 4mm, and the width of described rib (52) is 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689986.8A CN104329052A (en) | 2014-11-25 | 2014-11-25 | Oil-well mechanical wave eddy viscosity-reduction paraffin-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689986.8A CN104329052A (en) | 2014-11-25 | 2014-11-25 | Oil-well mechanical wave eddy viscosity-reduction paraffin-proof device |
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| Publication Number | Publication Date |
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| CN104329052A true CN104329052A (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410689986.8A Pending CN104329052A (en) | 2014-11-25 | 2014-11-25 | Oil-well mechanical wave eddy viscosity-reduction paraffin-proof device |
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| CN (1) | CN104329052A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865149A (en) * | 2015-06-24 | 2015-08-26 | 天津亿利科能源科技发展股份有限公司 | Evaluation method of crude oil paraffin inhibitor |
| CN108104770A (en) * | 2018-01-19 | 2018-06-01 | 西南石油大学 | A kind of new wax removal apparatus for eliminating sludge suitable for oil flow production well |
| CN115680566A (en) * | 2021-07-23 | 2023-02-03 | 中国石油天然气股份有限公司 | Oil layer porthole self-cleaning removes stifled ware |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921261Y (en) * | 2006-04-07 | 2007-07-11 | 中国石油大学(华东) | Self-excitation vibration deplugging oil-adding device |
| CN1995692A (en) * | 2006-10-10 | 2007-07-11 | 中国石油大学(华东) | Disk type eddy oscillating viscosity-reduction paraffin control device for use in sucker rod |
| CN2929168Y (en) * | 2006-04-07 | 2007-08-01 | 中国石油大学(华东) | Disc sheet type vortex oscillation reducing viscosity and anti-paraffin device of oil pumping rod |
| CN204299545U (en) * | 2014-11-25 | 2015-04-29 | 东营咸亨工贸有限公司 | Oil machinery ripple eddy current adhesion reducing and wax preventing device |
-
2014
- 2014-11-25 CN CN201410689986.8A patent/CN104329052A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921261Y (en) * | 2006-04-07 | 2007-07-11 | 中国石油大学(华东) | Self-excitation vibration deplugging oil-adding device |
| CN2929168Y (en) * | 2006-04-07 | 2007-08-01 | 中国石油大学(华东) | Disc sheet type vortex oscillation reducing viscosity and anti-paraffin device of oil pumping rod |
| CN1995692A (en) * | 2006-10-10 | 2007-07-11 | 中国石油大学(华东) | Disk type eddy oscillating viscosity-reduction paraffin control device for use in sucker rod |
| CN204299545U (en) * | 2014-11-25 | 2015-04-29 | 东营咸亨工贸有限公司 | Oil machinery ripple eddy current adhesion reducing and wax preventing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865149A (en) * | 2015-06-24 | 2015-08-26 | 天津亿利科能源科技发展股份有限公司 | Evaluation method of crude oil paraffin inhibitor |
| CN108104770A (en) * | 2018-01-19 | 2018-06-01 | 西南石油大学 | A kind of new wax removal apparatus for eliminating sludge suitable for oil flow production well |
| CN115680566A (en) * | 2021-07-23 | 2023-02-03 | 中国石油天然气股份有限公司 | Oil layer porthole self-cleaning removes stifled ware |
| CN115680566B (en) * | 2021-07-23 | 2024-05-07 | 中国石油天然气股份有限公司 | Automatic cleaning and blocking remover for oil layer blasthole |
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Application publication date: 20150204 |
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