CN204299544U - Down-hole mechanical ripple vibration wax control device - Google Patents
Down-hole mechanical ripple vibration wax control device Download PDFInfo
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- CN204299544U CN204299544U CN201420719089.2U CN201420719089U CN204299544U CN 204299544 U CN204299544 U CN 204299544U CN 201420719089 U CN201420719089 U CN 201420719089U CN 204299544 U CN204299544 U CN 204299544U
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Abstract
The utility model down-hole mechanical ripple vibration wax control device relates to a kind of oil recovery auxiliary equipment.Its objective is to provide a kind of long service life, the down-hole mechanical ripple vibration wax control device of Wax proofing Be very effective.The utility model down-hole mechanical ripple vibration wax control device, comprise main body and vibration shell fragment, runner is offered in described main body, one end of described runner is provided with contracting noz(zle), described vibration shell fragment is fixedly mounted on body exterior, and one end of vibration shell fragment is corresponding with the contracting nozzle of contracting noz(zle), and wherein said main body is fixedly installed junction plate, one end of described vibration shell fragment is fixedly connected with junction plate by outer wrap composite material, and the vibration frequency of described vibration shell fragment is 24Hz.
Description
Technical field
The utility model relates to a kind of oil recovery auxiliary equipment, particularly relates 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 CN2410049Y discloses one " sound wave paraffin-removal device for paraffin troubled oil well ", and this wax control device installs a nozzle in one end of a body, and spring leaf is fixed on outside body, is positioned at nozzle opposite.Under this device is contained in pump, well is put into by under this device by oil pipe, under the differential pressure action formed at annular space fluid column and pump suction, crude oil makes it produce strong vibration with higher flow velocity from nozzle ejection impact spring sheet, when acoustic vibration feedback effect is in crude oil, under the mechanism of sound wave, wax-crystal structure is destroyed, and plays the effect of wax-proof viscosity reducing.But this wax control device is when practical application, because spring leaf is in vibrational state all the time, the part be connected between spring leaf with body is due to of reciprocating vibration and fatigue fracture or get loose, therefore want often this wax control device to be proposed oil well to carry out overhauling or changing, further, the effect of the wax-proof viscosity reducing of this wax control device is also so good not as what imagine.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of long service life, the down-hole mechanical ripple vibration wax control device of Wax proofing Be very effective.
The utility model down-hole mechanical ripple vibration wax control device, comprise main body and vibration shell fragment, runner is offered in described main body, one end of described runner is provided with contracting noz(zle), described vibration shell fragment is fixedly mounted on body exterior, and one end of vibration shell fragment is corresponding with the contracting nozzle of contracting noz(zle), and wherein said main body is fixedly installed junction plate, one end of described vibration shell fragment is fixedly connected with junction plate by outer wrap composite material, and the vibration frequency of described vibration shell fragment is 24Hz.
The utility model down-hole mechanical ripple vibration wax control device, the length of wherein said vibration shell fragment is 98 ~ 100mm, and thickness is 2mm, and be processed with 15 degree of chamferings that 3mm is long near contracting noz(zle) one end, the material of described vibration shell fragment is BZn18-26 trade mark nickel silver alloy.
The utility model down-hole mechanical ripple vibration wax control device, wherein said main body comprises lower contact and top connection, described runner is opened in lower contact, described top connection is threaded connection in lower contact upper end, looping groove between shoulder hole lower surface in the upper surface of described lower contact and top connection, the lower end outside of described contracting noz(zle) is provided with annular boss, and described annular boss fixes in cannelure, and described junction plate is fixedly connected with top connection.
The utility model down-hole mechanical ripple vibration wax control device difference from prior art is to adopt composite material to be fixed together between the body of the utility model down-hole mechanical ripple vibration wax control device and vibration shell fragment, both firmly not getting loose of coupling part can have been ensured, the fatigue damage because mechanical oscillation cause can be reduced again, extend application life.Meanwhile, the utility model down-hole mechanical ripple vibration wax control device specify that vibration shell fragment self-oscillation produce CF, 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 vibration shell fragment, again special design is carried out to the geomery and material that vibrate shell fragment in the program, enable vibration shell fragment 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.
Main body in the utility model down-hole mechanical ripple vibration wax control device is divided into top connection and lower contact two dismountable parts, contracting noz(zle) is arranged between top connection and lower contact, can equipped according to different oil well, select the contracting noz(zle) of different size, reach best vibration Wax proofing effect.
Below in conjunction with accompanying drawing, down-hole mechanical ripple vibration wax control device of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model down-hole mechanical ripple vibration wax control device.
Detailed description of the invention
As shown in Figure 1, the utility model down-hole mechanical ripple vibration wax control device comprises main body and vibration shell fragment 1, and main body comprises lower contact 5 and top connection 6, and top connection 6 is threaded connection in lower contact 5 upper end.Runner 2 is offered in lower contact 5, looping groove 7 between shoulder hole lower surface in the upper surface of lower contact 5 and top connection 6, be provided with contracting noz(zle) 3 in top connection 6, the lower end outside of contracting noz(zle) 3 is provided with annular boss 8, and annular boss 8 fixes in cannelure 7.Top connection 6 upper end is fixedly connected with junction plate 4, and the upper end of vibration shell fragment 1 is fixedly connected with junction plate 4 by outer wrap composite material, and the lower end of vibration shell fragment 1 is corresponding with the contracting nozzle of contracting noz(zle) 3.The length of vibration shell fragment 1 is 98 ~ 100mm, and thickness is 2mm, is processed with 15 degree of chamferings that 3mm is long near contracting noz(zle) 3 one end, and the material of vibration shell fragment 1 is BZn18-26 trade mark nickel silver alloy, and the vibration frequency of vibration shell fragment 1 is 24Hz.
Wherein composite material is made up of asphalt base carbon fiber material and bonding adhesive, wherein bonding adhesive comprise mass fraction 5% 6101 epoxy resin, 1.5% 650 polyamide, the land plaster of 2.5% and the triethylene tetramine of 2%, all the other are asphalt base carbon fiber.
Lower contact is connected on the oil well pump of bottom by the utility model down-hole mechanical ripple vibration wax control device in use, then top connection is connected with sucker rod, under enter in oil well, oil well is according to normal operation mode work, the crude oil that oil well pump is extracted out sprays from contracting noz(zle) with certain speed, define a flat liquid stream, liquid stream brunt vibration shell fragment, if flow rate of liquid is enough large, namely when the self-sustained oscillation dynamic frequency of liquid stream matches with the intrinsic frequency of vibration shell fragment, resonance will be produced by excited vibrational shell fragment, and the mechanical wave that liquid propellant is strong towards periphery.Through the crude oil fluid of wax control device after mechanical wave effect, wax product net structure is destroyed, and viscosity of crude and freezing point reduce, thus reach the effect of wax control.
According to the utility model processing and manufacturing, 5 mechanical waves vibration wax control devices, have selected 5 mouthfuls of wells at the serious block of Liaohe Oil Field wax deposition, have carried out field experiment by wax control device lower going-into-well.Experimental result is as shown in table 1.
Table 1
These five mouthfuls of wells are all the serious wells of wax deposition, on average within every 20 days, just need to stop well and carry out washing wax operation.Use after the utility model, from the data of five mouthfuls of wells, all see and increase the effect that liquid increases oil, average 20 days of the hot washing period of measure former mouthfuls of wells, after measure, hot washing period is minimum extends 60 days, and some wells have extended 80 days and still effective.
Best in order to verify the effect of the vibration shell fragment decreasing and wax-coagulation-preventing device under the vibration frequency of 24Hz in the utility model wax control device, this patent utility model people 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
The factor impacts such as vibration shell fragment shape, material are subject to due to the vibration frequency vibrating shell fragment, in order to the vibration frequency enabling vibration shell fragment reach 24Hz, utility model people of the present utility model devises again the second cover experimental facilities, waterpower self-oscillation is utilized to select to produce the vibration shell fragment of 24Hz vibration frequency, adopting the vibrating reed of difformity and material to carry out oscillation experiment, is the good several groups of vibration shell fragments of Wax proofing effect in table 3.
The frequency of table 3 difference vibration shell fragment and wax deposition amount
Wherein, the BZn18-26 trade mark nickel silver alloy sheet that the 2nd group of 2mm adopted is thick, the Wax proofing effect of the rectangle vibration shell fragment that 98mm is long 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 preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (3)
1. a down-hole mechanical ripple vibration wax control device, comprise main body and vibration shell fragment (1), runner (2) is offered in described main body, one end of described runner (2) is provided with contracting noz(zle) (3), described vibration shell fragment (1) is fixedly mounted on body exterior, one end of vibration shell fragment (1) is corresponding with the contracting nozzle of contracting noz(zle) (3), it is characterized in that: described main body is fixedly installed junction plate (4), one end of described vibration shell fragment (1) is fixedly connected with junction plate (4) by outer wrap composite material, the vibration frequency of described vibration shell fragment (1) is 24Hz.
2. down-hole mechanical ripple vibration wax control device according to claim 1, it is characterized in that: the length of described vibration shell fragment (1) is 98 ~ 100mm, thickness is 2mm, be processed with 15 degree of chamferings that 3mm is long near contracting noz(zle) (3) one end, the material of described vibration shell fragment (1) is BZn18-26 trade mark nickel silver alloy.
3. down-hole mechanical ripple vibration wax control device according to claim 1, it is characterized in that: described main body comprises lower contact (5) and top connection (6), described runner (2) is opened in lower contact (5), described top connection (6) is threaded connection in lower contact (5) upper end, looping groove (7) between shoulder hole lower surface in the upper surface of described lower contact (5) and top connection (6), the lower end outside of described contracting noz(zle) (3) is provided with annular boss (8), described annular boss (8) fixes in cannelure (7), described junction plate (4) is fixedly connected with top connection (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420719089.2U CN204299544U (en) | 2014-11-25 | 2014-11-25 | Down-hole mechanical ripple vibration wax control device |
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| CN201420719089.2U CN204299544U (en) | 2014-11-25 | 2014-11-25 | Down-hole mechanical ripple vibration wax control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389555A (en) * | 2014-11-25 | 2015-03-04 | 东营咸亨工贸有限公司 | Underground mechanical wave oscillation paraffin controller |
| CN105588933A (en) * | 2015-12-12 | 2016-05-18 | 江曼 | Petroleum pipeline online tester |
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2014
- 2014-11-25 CN CN201420719089.2U patent/CN204299544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389555A (en) * | 2014-11-25 | 2015-03-04 | 东营咸亨工贸有限公司 | Underground mechanical wave oscillation paraffin controller |
| CN105588933A (en) * | 2015-12-12 | 2016-05-18 | 江曼 | Petroleum pipeline online tester |
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