CN105363740B - The dewaxing method and device of a kind of oil pipeline - Google Patents
The dewaxing method and device of a kind of oil pipeline Download PDFInfo
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- CN105363740B CN105363740B CN201410422720.7A CN201410422720A CN105363740B CN 105363740 B CN105363740 B CN 105363740B CN 201410422720 A CN201410422720 A CN 201410422720A CN 105363740 B CN105363740 B CN 105363740B
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Abstract
The invention discloses a kind of dewaxing method of oil pipeline and device, belong to oil field development technical field.This method includes：In first time period, with first default output oil amount size transfer oil in oil pipeline, in second time period, with second default output oil amount size transfer oil in oil pipeline, within the 3rd period, with the 3rd default output oil amount size transfer oil in oil pipeline, so that oil dissolves the part paraffin in oil pipeline and takes oil pipeline out of with oil；Hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, oil is injected from entrance to oil pipeline with standard oil amount size, makes oil promote hydraulic pressure wiper to be moved in oil pipeline, so that hydraulic pressure wiper strikes off the paraffin in oil pipeline.The device includes：Determining module, the first conveyor module, the second conveyor module, the 3rd conveyor module, it is put into module and wax removal module.The present invention can thoroughly remove the paraffin in oil pipeline.
Description
Technical field
The present invention relates to oil field development technical field, the dewaxing method and device of more particularly to a kind of oil pipeline.
Background technology
China's oil is mostly waxy oil, and waxy oil is in oil pipeline course of conveying, due to the drop of ambient temperature
Low, paraffin can separate out from oil, and the wax crystal of precipitation forms collection wax layer, so as to cause the stream of oil pipeline on tube wall
Logical capacity reduces, and frictional resistance increase, oil transportation ability declines, therefore, it is necessary to carries out wax removal to oil pipeline.
Prior art provides a kind of dewaxing method of oil pipeline, Ke Yiwei：Hot water is injected into oil pipeline, makes heat
Water dissolves the paraffin on oil pipeline inwall.
During the present invention is realized, inventor has found that prior art at least has problems with：
Due to hot water, temperature can be reduced during wax removal, and the temperature of hot water is down to below paraffin point, such water
Temperature can not dissolve the paraffin on oil pipeline inwall, so as to cause can not thoroughly to remove oil pipeline inwall in the prior art
On paraffin.
The content of the invention
In order to solve problem of the prior art, the invention provides a kind of dewaxing method of oil pipeline and device.It is described
Technical scheme is as follows：
On the one hand, the invention provides a kind of dewaxing method of oil pipeline, methods described to include：
First time period, second time period and the 3rd period are determined, the first time period is prior to second time
Section, the second time period is prior to the 3rd period；
In the first time period, with first default output oil amount size transfer oil in oil pipeline, described first
Default output oil amount size is more than standard oil amount size corresponding to the oil pipeline, so that the oil dissolves the petroleum pipeline
Part paraffin in road simultaneously takes the oil pipeline out of with the oil；
It is described with second default output oil amount size transfer oil in the oil pipeline in the second time period
Second default output oil amount size is more than the described first default output oil amount size, so that the oil is dissolved in the oil pipeline
Part paraffin simultaneously takes the oil pipeline out of with the oil；
It is described with the 3rd default output oil amount size transfer oil in the oil pipeline within the 3rd period
3rd default output oil amount size is more than the described second default output oil amount size, so that the oil is dissolved in the oil pipeline
Part paraffin simultaneously takes the oil pipeline out of with the oil；
The entrance of hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, the hydraulic pressure wiper includes
Base and multigroup steel disc, one end of every group of steel disc in multigroup steel disc are fixed on the end face of the base, described every group
Have one between the central shaft of steel disc and the base to be more than 0 degree and be less than 90 degree of angle, every group of steel disc it is another
End contacts close to the entrance and with the inwall of the oil pipeline, and the base is away from the entrance；
Oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted institute
State hydraulic pressure wiper to move in the oil pipeline, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline.
Preferably, the hydraulic pressure wiper includes the first hydraulic pressure wiper, the second hydraulic pressure wiper and the 3rd hydraulic pressure pigging
Device, the nominal diameter of the first hydraulic pressure wiper are more than or equal to the internal diameter of the oil pipeline, the second hydraulic pressure pigging
The nominal diameter of device is more than the nominal diameter of the first hydraulic pressure wiper, and the nominal diameter of the 3rd hydraulic pressure wiper is more than
The nominal diameter of the second hydraulic pressure wiper；
The entrance by hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, with the standard oil
Amount size injects oil from the entrance to the oil pipeline, the oil is promoted the hydraulic pressure wiper in the oil transportation
Moved in pipeline, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline, including：
The entrance of first hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, with the standard
Output oil amount size injects oil from the entrance to the oil pipeline, makes the oil promote the first hydraulic pressure wiper to exist
Moved in the oil pipeline, so that the first hydraulic pressure wiper strikes off the paraffin in the oil pipeline；
The entrance of second hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, with the standard
Output oil amount size injects oil from the entrance to the oil pipeline, makes the oil promote the second hydraulic pressure wiper to exist
Moved in the oil pipeline, so that the second hydraulic pressure wiper strikes off the paraffin in the oil pipeline；
The entrance of 3rd hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, with the standard
Output oil amount size injects oil from the entrance to the oil pipeline, makes the oil promote the 3rd hydraulic pressure wiper to exist
Moved in the oil pipeline, so that the 3rd hydraulic pressure wiper strikes off the paraffin in the oil pipeline.
It is preferably, described to be injected with the standard oil amount size from the entrance to the oil pipeline before oil,
Also include：
Pour-point depressant is injected from the entrance to the oil pipeline；
Oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted institute
Hydraulic pressure wiper is stated to move in the oil pipeline, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline,
Including：
Oil is injected from the entrance to the oil pipeline with the standard oil amount size, reduces the pour-point depressant
The temperature of freezing of petroleum, the oil for reducing freezing point is set to promote the hydraulic pressure wiper to be moved in the oil pipeline
It is dynamic, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline.
Preferably, before the entrance by hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, also
Including：
The mending-leakage iron nail that length of the mending-leakage iron nail in the oil pipeline is more than preset length is obtained from mending-leakage record
Mark, the mending-leakage record for store length of the mending-leakage iron nail in oil pipeline and mark corresponding relation；
Mending-leakage iron nail corresponding to the mark of the acquisition is taken out from the oil pipeline, enables the hydraulic pressure wiper suitable
Smooth moves in the oil pipeline.
Preferably, after injecting oil from the entrance to the oil pipeline with the standard oil amount size, also wrap
Include：
Measure the pressure of the predeterminated position point of the oil pipeline；
If the pressure not in pre-set pressure range, opens the bypass valve of the oil pipeline, so that the liquid
Wiper is pressed to be taken out from the bypass outlet of the oil pipeline.
On the other hand, the invention provides a kind of paraffin removal unit of oil pipeline, described device to include：
Determining module, for determining first time period, second time period and the 3rd period, the first time period prior to
The second time period, the second time period is prior to the 3rd period；
First conveyor module, in the first time period, output oil amount size to be preset in oil pipeline with first
Transfer oil, the described first default output oil amount size is more than standard oil amount size corresponding to the oil pipeline, so that described
Oil dissolves the part paraffin in the oil pipeline and takes the oil pipeline out of with the oil；
Second conveyor module, in the second time period, output oil amount size to be preset in the petroleum pipeline with second
Transfer oil in road, the described second default output oil amount size is more than the described first default output oil amount size, so that the oil is molten
Change the part paraffin in the oil pipeline and take the oil pipeline out of with the oil；
3rd conveyor module, within the 3rd period, output oil amount size to be preset in the petroleum pipeline with the 3rd
Transfer oil in road, the described 3rd default output oil amount size is more than the described second default output oil amount size, so that the oil is molten
Change the part paraffin in the oil pipeline and take the oil pipeline out of with the oil；
Module is put into, it is described for entrance of the hydraulic pressure wiper from the oil pipeline to be put into the oil pipeline
Hydraulic pressure wiper includes base and multigroup steel disc, and one end of every group of steel disc in multigroup steel disc is fixed on the end of the base
There is one on face, between every group of steel disc and the central shaft of the base and be more than 0 degree and the angle less than 90 degree, it is described every
The other end of group steel disc contacts close to the entrance and with the inwall of the oil pipeline, and the base is away from the entrance；
Wax removal module, for injecting oil from the entrance to the oil pipeline with the standard oil amount size, make
The oil promotes the hydraulic pressure wiper to be moved in the oil pipeline, so that the hydraulic pressure wiper strikes off the oil transportation
Paraffin in pipeline.
Preferably, the hydraulic pressure wiper includes the first hydraulic pressure wiper, the second hydraulic pressure wiper and the 3rd hydraulic pressure pigging
Device, the nominal diameter of the first hydraulic pressure wiper are more than or equal to the internal diameter of the oil pipeline, the second hydraulic pressure pigging
The nominal diameter of device is more than the nominal diameter of the first hydraulic pressure wiper, and the nominal diameter of the 3rd hydraulic pressure wiper is more than
The nominal diameter of the second hydraulic pressure wiper；
It is described to be put into module, including：
First is put into unit, for the entrance of the first hydraulic pressure wiper from the oil pipeline to be put into the oil transportation
In pipeline, oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted institute
State the first hydraulic pressure wiper to move in the oil pipeline, so that the first hydraulic pressure wiper is struck off in the oil pipeline
Paraffin；
Second is put into unit, for the entrance of the second hydraulic pressure wiper from the oil pipeline to be put into the oil transportation
In pipeline, oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted institute
State the second hydraulic pressure wiper to move in the oil pipeline, so that the second hydraulic pressure wiper is struck off in the oil pipeline
Paraffin；
3rd is put into unit, for the entrance of the 3rd hydraulic pressure wiper from the oil pipeline to be put into the oil transportation
In pipeline, oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted institute
State the 3rd hydraulic pressure wiper to move in the oil pipeline, so that the 3rd hydraulic pressure wiper is struck off in the oil pipeline
Paraffin.
Preferably, described device also includes：
Injection module, for injecting pour-point depressant from the entrance to the oil pipeline；
The wax removal module, for injecting stone from the entrance to the oil pipeline with the standard oil amount size
Oil, the pour-point depressant is reduced the temperature of freezing of petroleum, the oil for reducing freezing point is promoted the hydraulic pressure pigging
Device moves in the oil pipeline, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline.
Preferably, described device also includes：
Acquisition module, it is more than default length for obtaining length of the mending-leakage iron nail in the oil pipeline in being recorded from mending-leakage
The mark of the mending-leakage iron nail of degree, the mending-leakage record the correspondence for storing length of the mending-leakage iron nail in oil pipeline and mark
Relation；
Module is taken out, for taking out mending-leakage iron nail corresponding to the mark of the acquisition from the oil pipeline, is made described
Hydraulic pressure wiper can be moved smoothly in the oil pipeline.
Preferably, described device also includes：
Measurement module, the pressure of the predeterminated position point for measuring the oil pipeline；
Module is opened, if for the pressure not in pre-set pressure range, opens the bypass valve of the oil pipeline
Door, so that the hydraulic pressure wiper takes out from the bypass outlet of the oil pipeline.
In embodiments of the present invention, when carrying out wax removal to oil pipeline using hydraulic pressure wiper, with big output oil amount defeated
Transfer oil in oil-piping, make the oil part paraffin as much as possible dissolved in oil pipeline and take petroleum pipeline out of with oil
Road, also, hydraulic pressure wiper includes multigroup steel disc, the interior contact of every group of steel disc and oil pipeline in multigroup steel disc, oil
Promote hydraulic pressure wiper to be moved in oil pipeline, hydraulic pressure wiper is struck off the paraffin in oil pipeline, so as to remove
Paraffin in oil pipeline.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of dewaxing method flow chart for oil pipeline that the embodiment of the present invention 1 provides；
Fig. 2-1 is a kind of dewaxing method flow chart for oil pipeline that the embodiment of the present invention 2 provides；
Fig. 2-2 is a kind of structure chart for hydraulic pressure wiper that the embodiment of the present invention 2 provides；
Fig. 2-3 is a kind of structure chart for service system that the embodiment of the present invention 2 provides；
Fig. 2-4 is a kind of structure chart for receipts ball system that the embodiment of the present invention 2 provides；
Fig. 3 is a kind of paraffin removal unit structural representation for oil pipeline that the embodiment of the present invention 3 provides.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment 1
The embodiments of the invention provide a kind of dewaxing method of oil pipeline, referring to Fig. 1, wherein, this method includes：
Step 101：First time period, second time period and the 3rd period are determined, first time period is prior to the second time
Section, second time period is prior to the 3rd period；
Step 102：In first time period, with first default output oil amount size transfer oil in oil pipeline, first
Default output oil amount size is more than standard oil amount size corresponding to oil pipeline, so that oil dissolves the part stone in oil pipeline
Wax simultaneously takes oil pipeline out of with oil；
Step 103：In second time period, with second default output oil amount size transfer oil in oil pipeline, second
Default output oil amount size is more than the first default output oil amount size, so that oil dissolves the part paraffin in oil pipeline and with oil
Take oil pipeline out of；
Step 104：Within the 3rd period, with the 3rd default output oil amount size transfer oil in oil pipeline, the 3rd
Default output oil amount size is more than the second default output oil amount size, so that oil dissolves the part paraffin in oil pipeline and with oil
Take oil pipeline out of；
Step 105：Hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, hydraulic pressure wiper includes base
With multigroup steel disc, one end of every group of steel disc in multigroup steel disc is fixed on the end face of base, the center of every group of steel disc and base
Have one between axle to be more than 0 degree and be less than 90 degree of angle, the other end of every group of steel disc close to entrance and with oil pipeline
Inwall contacts, and base is away from entrance；
Step 106：Oil is injected from entrance to oil pipeline with standard oil amount size, oil is promoted hydraulic pressure wiper
Moved in oil pipeline, so that hydraulic pressure wiper strikes off the paraffin in oil pipeline.
In embodiments of the present invention, when carrying out wax removal to oil pipeline using hydraulic pressure wiper, with big output oil amount defeated
Transfer oil in oil-piping, make the oil part paraffin as much as possible dissolved in oil pipeline and take petroleum pipeline out of with oil
Road, also, hydraulic pressure wiper includes multigroup steel disc, the interior contact of every group of steel disc and oil pipeline in multigroup steel disc, oil
Promote hydraulic pressure wiper to be moved in oil pipeline, hydraulic pressure wiper is struck off the paraffin in oil pipeline, so as to remove
Paraffin in oil pipeline.
Embodiment 2
The embodiments of the invention provide a kind of dewaxing method of oil pipeline, referring to Fig. 2-1, wherein, this method includes：
Step 201：First time period, second time period and the 3rd period are determined, first time period is prior to the second time
Section, second time period is prior to the 3rd period；
First time period, second time period and the 3rd period with hydraulic pressure wiper before wax removal is carried out；The very first time
Length, the length of second time period and the length of the 3rd period of section can be all identical, can also two of which it is identical, with the
Three differences, can also be all different；And the length of the length of first time period, the length of second time period and the 3rd period
It can be configured and change as needed, in embodiments of the present invention the length to first time period, the length of second time period
The length of degree and the 3rd period are not especially limited.For example, first time period is first day, second time period is second day,
3rd period was the 3rd day, and for the ease of description later, first time period is referred to as first day, and second time period is referred to as into the
Two days, the 3rd period was referred to as the 3rd day, and first day prior to second day, second day prior to the 3rd day.
It should be noted that in this step, can also determine N number of period, N is the integer more than 3, also can be true
Determine first time period, second time period, the 3rd N periods period ....
Step 202：In first time period, with first default output oil amount size transfer oil in oil pipeline, first
Default output oil amount size is more than standard oil amount size corresponding to oil pipeline, so that oil dissolves the part stone in oil pipeline
Wax simultaneously takes oil pipeline out of with oil；
The oil of big output oil amount is bigger to the impulsive force of oil pipeline inwall, can be by the part paraffin in oil pipeline
Dissolve and take oil pipeline out of with oil；Therefore, before wax removal is carried out to oil pipeline, existed with the first default output oil amount size
Transfer oil in oil pipeline, the first default output oil amount size are more than standard oil amount size corresponding to oil pipeline, make oil
Dissolve the part paraffin in oil pipeline and take oil pipeline out of with oil.
Wherein, each oil pipeline corresponds to a standard oil amount size, and standard oil amount size can basis
The internal diameter size of oil pipeline is configured and changed, and standard oil amount size is not limited specifically in embodiments of the present invention
It is fixed.For example, standard oil amount size is 30m3/h。
First default output oil amount size is more than standard oil amount size, and the first output oil amount size can be carried out as needed
Set and change, the such as first default output oil amount size is 45m3/h.Therefore, this step can be：In first day, with 45m3/h
Output oil amount size transfer oil in oil pipeline, due to 45m3/ h output oil amounts are more than 30m3/ h standard oil amount, in petroleum pipeline
Road petrochina is bigger to the impulsive force of oil pipeline inwall, can dissolve the part paraffin in oil pipeline and with oil zones
Go out oil pipeline.
Step 203：In second time period, with second default output oil amount size transfer oil in oil pipeline, second
Default output oil amount size is more than the first default output oil amount size, so that oil dissolves the part paraffin in oil pipeline and with oil
Take oil pipeline out of；
The oil of big output oil amount is bigger to the impulsive force of oil pipeline inwall, can be by the part paraffin in oil pipeline
Dissolve and take oil pipeline out of with oil, continue to increase output oil amount in second time period, it is therefore, in this step, pre- with second
If output oil amount size transfer oil in oil pipeline, the second default output oil amount size is more than the first default output oil amount size, makes
Oil dissolves the part paraffin in oil pipeline and takes oil pipeline out of with oil.
Second default output oil amount size is more than the first default output oil amount size, and the second default output oil amount size can basis
Need to be configured and change, the such as second default output oil amount size is 50m3/h.Therefore, this step can be：In second day,
With 50m3/ h output oil amount sizes transfer oil in oil pipeline, due to 50m3/ h output oil amounts are more than 45m3/ h output oil amounts, in oil transportation
Pipeline petrochina can become big to the impulsive force of oil pipeline inwall, and the oil in oil pipeline can also dissolve the portion in oil pipeline
Divide paraffin, and oil pipeline is taken out of with oil.
Step 204：Within the 3rd period, with the 3rd default output oil amount size transfer oil in oil pipeline, the 3rd
Default output oil amount size is more than the second default output oil amount size, so that oil dissolves the part paraffin in oil pipeline and with oil
Take oil pipeline out of；
The oil of big output oil amount is bigger to the impulsive force of oil pipeline inwall, can be by the part paraffin in oil pipeline
Dissolve and take oil pipeline out of with oil, continue to increase output oil amount in the 3rd period, it is therefore, in this step, pre- with the 3rd
If output oil amount size transfer oil in oil pipeline, the 3rd default output oil amount size is more than the second default output oil amount size, makes
Oil dissolves the part paraffin in oil pipeline and takes oil pipeline out of with oil.
3rd default output oil amount size is more than the second default output oil amount size, and the 3rd default output oil amount size can basis
Need to be configured and change, the such as the 3rd default output oil amount size is 55m3/h.Therefore, this step can be：In the 3rd day,
With 55m3/ h output oil amount sizes transfer oil in oil pipeline, due to 55m3/ h output oil amounts are more than 45m3/ h output oil amounts, in oil transportation
Pipeline petrochina also may proceed to become big to the impulsive force of oil pipeline inwall, and the oil in oil pipeline can also dissolve oil transportation again
Part paraffin in pipeline, and take oil pipeline out of with oil.
It should be noted that if N number of period were determined in step 201, each period in N number of period
It is interior, all with big output oil amount in oil pipeline transfer oil.
Step 205：The mending-leakage that length of the mending-leakage iron nail in oil pipeline is more than preset length is obtained from mending-leakage record
The mark of iron nail, mending-leakage iron nail corresponding to the mark of acquisition is taken out from oil pipeline, enable hydraulic pressure wiper smoothly defeated
Moved in oil-piping；
Wherein, mending-leakage records the corresponding relation for storing length of the mending-leakage iron nail in oil pipeline and mark；Defeated
Often leaky in oil-piping, pipe-line maintenance personnel can be filled the leak on oil pipeline with mending-leakage iron nail, and by mending-leakage
Corresponding relation between the length in oil pipeline of iron nail and the mark of mending-leakage iron nail is added in mending-leakage record.
If the length of mending-leakage iron nail is more than the wall thickness of oil pipeline, mending-leakage iron nail can pass through the wall thickness of oil pipeline to enter
In oil pipeline, when removing the paraffin on oil-gas pipeline inwall with hydraulic pressure wiper, mending-leakage iron nail can hinder hydraulic pressure wiper
It is mobile, therefore, in this step, length of the mending-leakage iron nail in oil pipeline is obtained from mending-leakage record and is more than preset length
The mark of mending-leakage iron nail, mending-leakage iron nail corresponding to the mark of acquisition is taken out from oil pipeline using the mode of putting in a skylight, makes hydraulic pressure
Wiper can be moved smoothly in oil pipeline.
The mark of mending-leakage iron nail can be the position of mending-leakage iron nail in oil pipeline etc., in embodiments of the present invention to mending
The mark of leakage iron nail is not especially limited；Preset length can be configured and change according to the internal diameter of oil pipeline, in this hair
Preset length is not especially limited in bright embodiment, as preset length be oil pipeline internal diameter 1/3rd.
It should be noted that the paraffin in oil pipeline is removed using foam pig in the prior art, due to defeated
No matter the mending-leakage iron nail length in oil-piping can all hinder foam pig to be moved in oil pipeline, therefore, it is necessary to by oil transportation
Mending-leakage iron nail on pipeline all takes out；And in the embodiment of the present invention, using hydraulic pressure wiper, due to the paraffin cutting of hydraulic pressure wiper
Piece is flexible, thus allows for stretching, so as to hide the mending-leakage that the mending-leakage iron nail in oil pipeline is less than preset length
The obstruction of iron nail, therefore, only needing to take out mending-leakage iron nail of length of the mending-leakage iron nail in oil pipeline more than preset length,
So as to reduce the workload for taking out mending-leakage iron nail.
Step 206：First hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, it is big with standard oil amount
It is small that oil is injected from entrance to oil pipeline, make oil promote the first hydraulic pressure wiper to be moved in oil pipeline, so that first
Hydraulic pressure wiper strikes off the paraffin in oil pipeline；
Specifically, the first hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, and from entrance to oil transportation
Pipeline injects pour-point depressant, and oil is injected from entrance to oil pipeline with standard oil amount size, pour-point depressant is reduced the solidifying of oil
Solid point, the subzero oil of drop is set to promote the first hydraulic pressure wiper to be moved in oil pipeline, so that the first hydraulic pressure wiper
Strike off the paraffin in oil pipeline and take oil pipeline out of with oil.
Referring to Fig. 2-2, the first hydraulic pressure wiper includes base and multigroup steel disc, one end of every group of steel disc in multigroup steel disc
It is fixed on the section of base, has one between every group of steel disc and the central shaft of base and be more than 0 degree and the angle less than 90 degree,
The other end of every group of steel disc contacts close to entrance and with the inwall of oil pipeline, and base is away from entrance.
The nominal diameter of first hydraulic pressure wiper is more than or equal to the internal diameter of oil pipeline, as the internal diameter of oil pipeline is
149 millimeters, the nominal diameter of the first hydraulic pressure wiper is 150 millimeters etc..Pour-point depressant can be that concentration is 50~60mg/l's
BEM-5P pour-point depressants etc..
A kind of service system is provided in the embodiment of the present invention, as Figure 2-3, the service system includes oil pipeline
Valve 1, valve 2, valve 3, valve 4, valve 5, service room and pressure gauge on entrance, oil pipeline.
Wherein, one end of one end connecting valve 1 of the entrance of oil pipeline, valve 1 other end connecting valve 2 one
End, one end of the other end connecting valve 3 of valve 2, one end of the other end connection pressure gauge of valve 3；The other end of valve 2 is also
One end of connection service room, the other end for room of serving a ball are also connected with valve 4；The entrance of oil pipeline is also connected with one end of valve 5, valve
The other end difference connecting valve 3 and pressure gauge of door 5.
In this step, valve 2 is closed, slowly opens valve 4, so as to drain the indoor gas of service, by the first hydraulic pressure
Wiper is placed on service interior, opens valve 2, opens valve 3；Valve 1 is slowly opened, makes service is indoor to be full of oil, delays
It is slow to close valve 5, oil is injected from entrance to oil pipeline with standard oil amount size so as to realize, oil is promoted the first liquid
Pressure wiper moves in oil pipeline, so that the first hydraulic pressure wiper strikes off the paraffin in oil pipeline and taken out of with oil defeated
Oil-piping.
Pass through the pressure of the predeterminated position point of gauge measurement oil pipeline；If the pressure is not in pre-set pressure range
It is interior, the bypass valve of oil pipeline is opened, so that the first hydraulic pressure wiper takes out from the bypass outlet of oil pipeline.
Specifically, the pressure value of gauge measurement is read, if the pressure value not in pre-set pressure range, determines
One hydraulic pressure wiper be blocked, it is necessary to recover bypass flow, take out the first hydraulic pressure wiper；If the pressure value is in default pressure
In the range of power, determine that the first hydraulic pressure wiper has been issued.
Recover bypass flow, take out the first hydraulic pressure wiper the step of can be：Valve 5 is opened, closes valve 1 and 3, really
Determine after valve 1 and 3 closes tight, to close valve 2, open valve 4, by indoor petroleum recovery of serving a ball, and the first hydraulic pressure wiper
It is indoor to be back to service.
Pre-set pressure range can be configured and change as needed, in embodiments of the present invention to pre-set pressure range
It is not especially limited, if pre-set pressure range is normal pressure -0.2MPa~normal pressure+0.2MPa.
The embodiments of the invention provide one kind to receive ball system, and as in Figure 2-4, the receipts ball system includes going out for oil pipeline
Mouth, the valve 6 on oil pipeline, valve 7, valve 8, valve 9 and valve 10 and receipts ball room.
Wherein, one end of one end connecting valve 6 of the outlet of oil pipeline, the one of the other end connecting valve 7 of valve 6
End, one end of the other end connecting valve 8 of valve 7；The other end of valve 7 is also connected with receiving one end of ball room, receives the another of ball room
End is also connected with valve 9；The outlet of oil pipeline is also connected with one end of valve 10, the other end connecting valve 8 of valve 10 it is another
End.
In this step, the process that the first hydraulic pressure wiper takes out from oil pipeline can be：Open valve 6, valve 7
With valve 8, valve 10 is closed, after receiving ball instruction, valve 10 is opened, closes valve 6 and valve 8, determine valve 6 and valve
After 8 close tight, valve 7 is closed, opens valve 9, the petroleum recovery in ball room will be received, the first hydraulic pressure wiper, which enters, receives ball room.
Step 207：Second hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, it is big with standard oil amount
It is small that oil is injected from entrance to oil pipeline, make oil promote the second hydraulic pressure wiper to be moved in oil pipeline, so that second
Hydraulic pressure wiper strikes off the paraffin in oil pipeline；
Specifically, the second hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, and from entrance to oil transportation
Pipeline injects pour-point depressant, and oil is injected from entrance to oil pipeline to identify output oil amount size, pour-point depressant is reduced the solidifying of oil
Solid point, the oil for reducing freezing point is set to promote the second hydraulic pressure wiper to be moved in oil pipeline, so that the second hydraulic pressure pigging
Device strikes off the paraffin in oil pipeline and takes oil pipeline out of with oil.
The nominal diameter of second hydraulic pressure wiper is more than the nominal diameter of the first hydraulic pressure wiper, and the second hydraulic pressure pigging
The structure of device is identical with the structure of the first hydraulic pressure wiper, the service process of the second hydraulic pressure wiper and the first hydraulic pressure wiper
Service process is identical, and the receipts ball process of the second hydraulic pressure wiper is identical with the receipts ball process of the first hydraulic pressure wiper, herein no longer
Describe in detail.
Step 208：3rd hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, it is big with standard oil amount
It is small that oil is injected from entrance to oil pipeline, make oil promote the 3rd hydraulic pressure wiper to be moved in oil pipeline, so that the 3rd
Hydraulic pressure wiper strikes off the paraffin in oil pipeline；
Specifically, the 3rd hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, and from entrance to oil transportation
Pipeline injects pour-point depressant, and oil is injected from entrance to oil pipeline with standard oil amount size, pour-point depressant is reduced the solidifying of oil
Solid point, the oil for reducing freezing point is set to promote the 3rd hydraulic pressure wiper to be moved in oil pipeline, so that the 3rd hydraulic pressure pigging
Device strikes off the paraffin in oil pipeline and takes oil pipeline out of with oil.
The nominal diameter of 3rd hydraulic pressure wiper is more than the nominal diameter of the second hydraulic pressure wiper, and the 3rd hydraulic pressure pigging
The structure of device is identical with the structure of the first hydraulic pressure wiper, the service process of the 3rd hydraulic pressure wiper and the first hydraulic pressure wiper
Service process is identical, and the receipts ball process of the 3rd hydraulic pressure wiper is identical with the receipts ball process of the first hydraulic pressure wiper, herein no longer
Describe in detail.
It should be noted that can also set M hydraulic pressure wiper in embodiments of the present invention, M is the integer more than 3,
Then this step can be：M hydraulic pressure wiper is put into oil pipeline from the entrance of oil pipeline, with standard oil amount size
Oil is injected from entrance to oil pipeline, makes oil promote M hydraulic pressure wipers to be moved in oil pipeline, so that M hydraulic pressure
Wiper strikes off the paraffin in oil pipeline；
In embodiments of the present invention, when carrying out wax removal to oil pipeline using hydraulic pressure wiper, with big output oil amount defeated
Transfer oil in oil-piping, make the oil part paraffin as much as possible dissolved in oil pipeline and take petroleum pipeline out of with oil
Road, also, hydraulic pressure wiper includes multigroup steel disc, the interior contact of every group of steel disc and oil pipeline in multigroup steel disc, oil
Promote hydraulic pressure wiper to be moved in oil pipeline, hydraulic pressure wiper is struck off the paraffin in oil pipeline, so as to remove
Paraffin in oil pipeline.
Embodiment 3
The embodiments of the invention provide a kind of paraffin removal unit of oil pipeline.Referring to Fig. 3, wherein, the device includes：
Determining module 301, for determining first time period, second time period and the 3rd period, first time period prior to
Second time period, second time period is prior to the 3rd period；
First conveyor module 302, in first time period, with the first default output oil amount size in oil pipeline it is defeated
Oil is sent, the first default output oil amount size is more than standard oil amount size corresponding to oil pipeline, so that oil dissolves petroleum pipeline
Part paraffin in road simultaneously takes oil pipeline out of with oil；
Second conveyor module 303, in second time period, with the second default output oil amount size in oil pipeline it is defeated
Oil is sent, the second default output oil amount size is more than the first default output oil amount size, so that oil dissolves the part in oil pipeline
Paraffin simultaneously takes oil pipeline out of with oil；
3rd conveyor module 304, within the 3rd period, with the 3rd default output oil amount size in oil pipeline it is defeated
Oil is sent, the 3rd default output oil amount size is more than the second default output oil amount size, so that oil dissolves the part in oil pipeline
Paraffin simultaneously takes oil pipeline out of with oil；
Module 305 is put into, for hydraulic pressure wiper to be put into oil pipeline from the entrance of oil pipeline, hydraulic pressure wiper
Including base and multigroup steel disc, one end of every group of steel disc in multigroup steel disc is fixed on the end face of base, every group of steel disc and bottom
Have one between the central shaft of seat to be more than 0 degree and be less than 90 degree of angle, the other end of every group of steel disc close to entrance and with it is defeated
The inwall contact of oil-piping, base is away from entrance；
Wax removal module 306, for injecting oil from entrance to oil pipeline with standard oil amount size, oil is set to promote liquid
Pressure wiper moves in oil pipeline, so that hydraulic pressure wiper strikes off the paraffin in oil pipeline.
Preferably, hydraulic pressure wiper includes the first hydraulic pressure wiper, the second hydraulic pressure wiper and the 3rd hydraulic pressure wiper, the
The nominal diameter of one hydraulic pressure wiper is more than or equal to the internal diameter of oil pipeline, and the nominal diameter of the second hydraulic pressure wiper is more than the
The nominal diameter of one hydraulic pressure wiper, the nominal diameter of the 3rd hydraulic pressure wiper are more than the nominal diameter of the second hydraulic pressure wiper；
Module 305 is put into, including：
First is put into unit, for the first hydraulic pressure wiper to be put into oil pipeline from the entrance of oil pipeline, with mark
Quasi- output oil amount size injects oil from entrance to oil pipeline, makes oil promote the first hydraulic pressure wiper to be moved in oil pipeline
It is dynamic, so that the first hydraulic pressure wiper strikes off the paraffin in oil pipeline；
Second is put into unit, for the second hydraulic pressure wiper to be put into oil pipeline from the entrance of oil pipeline, with mark
Quasi- output oil amount size injects oil from entrance to oil pipeline, makes oil promote the second hydraulic pressure wiper to be moved in oil pipeline
It is dynamic, so that the second hydraulic pressure wiper strikes off the paraffin in oil pipeline；
3rd is put into unit, for the 3rd hydraulic pressure wiper to be put into oil pipeline from the entrance of oil pipeline, with mark
Quasi- output oil amount size injects oil from entrance to oil pipeline, makes oil promote the 3rd hydraulic pressure wiper to be moved in oil pipeline
It is dynamic, so that the 3rd hydraulic pressure wiper strikes off the paraffin in oil pipeline.
Preferably, device also includes：
Injection module, for injecting pour-point depressant from entrance to oil pipeline；
Wax removal module 306, for injecting oil from entrance to oil pipeline with standard oil amount size, reduce pour-point depressant
Temperature of freezing of petroleum, the oil for reducing freezing point is set to promote hydraulic pressure wiper to be moved in oil pipeline, so that hydraulic pressure pigging
Device strikes off the paraffin in oil pipeline.
Preferably, device also includes：
Acquisition module, it is more than preset length for obtaining length of the mending-leakage iron nail in oil pipeline in being recorded from mending-leakage
The mark of mending-leakage iron nail, mending-leakage record the corresponding relation for storing length of the mending-leakage iron nail in oil pipeline and mark；
Module is taken out, for taking out mending-leakage iron nail corresponding to the mark of acquisition from oil pipeline, enables hydraulic pressure wiper
Smoothly moved in oil pipeline.
Preferably, device also includes：
Measurement module, the pressure of the predeterminated position point for measuring oil pipeline；
Module is opened, if for pressure not in pre-set pressure range, the bypass valve of oil pipeline is opened, so that liquid
Wiper is pressed to be taken out from the bypass outlet of oil pipeline.
In embodiments of the present invention, when carrying out wax removal to oil pipeline using hydraulic pressure wiper, with big output oil amount defeated
Transfer oil in oil-piping, make the oil part paraffin as much as possible dissolved in oil pipeline and take petroleum pipeline out of with oil
Road, also, hydraulic pressure wiper includes multigroup steel disc, the interior contact of every group of steel disc and oil pipeline in multigroup steel disc, oil
Promote hydraulic pressure wiper to be moved in oil pipeline, hydraulic pressure wiper is struck off the paraffin in oil pipeline, so as to remove
Paraffin in oil pipeline.
It should be noted that：Above-described embodiment provide oil pipeline wax removal device in the wax removal of oil pipeline,
, can be as needed and by above-mentioned function distribution only with the division progress of above-mentioned each functional module for example, in practical application
Completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, it is described above to complete
All or part of function.In addition, the device of the wax removal for the oil pipeline that above-described embodiment provides and the wax removal of oil pipeline
Embodiment of the method belongs to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that hardware can be passed through by realizing all or part of step of above-described embodiment
To complete, by program the hardware of correlation can also be instructed to complete, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (8)
1. a kind of dewaxing method of oil pipeline, it is characterised in that methods described includes：
First time period, second time period and the 3rd period are determined, the first time period is prior to the second time period, institute
Second time period is stated prior to the 3rd period；
In the first time period, with first default output oil amount size transfer oil in oil pipeline, described first is default
Output oil amount size is more than standard oil amount size corresponding to the oil pipeline, so that the oil is dissolved in the oil pipeline
Part paraffin and take the oil pipeline out of with the oil；
In the second time period, with second default output oil amount size transfer oil in the oil pipeline, described second
Default output oil amount size is more than the described first default output oil amount size, so that the oil dissolves the part in the oil pipeline
Paraffin simultaneously takes the oil pipeline out of with the oil；
Within the 3rd period, with the 3rd default output oil amount size transfer oil in the oil pipeline, the described 3rd
Default output oil amount size is more than the described second default output oil amount size, so that the oil dissolves the part in the oil pipeline
Paraffin simultaneously takes the oil pipeline out of with the oil；
The entrance of hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, the hydraulic pressure wiper includes base
With multigroup steel disc, one end of every group of steel disc in multigroup steel disc is fixed on the end face of the base, every group of steel disc
An angle for being more than 0 degree and being less than 90 degree between the central shaft of the base be present, the other end of every group of steel disc leans on
The nearly entrance and contacted with the inwall of the oil pipeline, the base is away from the entrance；
Oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted the liquid
Pressure wiper moves in the oil pipeline, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline.
2. the method as described in claim 1, it is characterised in that the hydraulic pressure wiper includes the first hydraulic pressure wiper, second
Hydraulic pressure wiper and the 3rd hydraulic pressure wiper, the nominal diameter of the first hydraulic pressure wiper are more than or equal to the oil pipeline
Internal diameter, the nominal diameter of the second hydraulic pressure wiper is more than the nominal diameter of the first hydraulic pressure wiper, the described 3rd
The nominal diameter of hydraulic pressure wiper is more than the nominal diameter of the second hydraulic pressure wiper；
The entrance by hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, big with the standard oil amount
It is small that oil is injected from the entrance to the oil pipeline, the oil is promoted the hydraulic pressure wiper in the oil pipeline
Middle movement, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline, including：
The entrance of first hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, with the standard oil
Amount size injects oil from the entrance to the oil pipeline, the oil is promoted the first hydraulic pressure wiper described
Moved in oil pipeline, so that the first hydraulic pressure wiper strikes off the paraffin in the oil pipeline；
The entrance of second hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, with the standard oil
Amount size injects oil from the entrance to the oil pipeline, the oil is promoted the second hydraulic pressure wiper described
Moved in oil pipeline, so that the second hydraulic pressure wiper strikes off the paraffin in the oil pipeline；
The entrance of 3rd hydraulic pressure wiper from the oil pipeline is put into the oil pipeline, with the standard oil
Amount size injects oil from the entrance to the oil pipeline, the oil is promoted the 3rd hydraulic pressure wiper described
Moved in oil pipeline, so that the 3rd hydraulic pressure wiper strikes off the paraffin in the oil pipeline.
3. the method as described in claim 1, it is characterised in that it is described with the standard oil amount size from the entrance to institute
Before stating oil pipeline injection oil, in addition to：
Pour-point depressant is injected from the entrance to the oil pipeline；
Oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted the liquid
Pressure wiper moves in the oil pipeline, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline, including：
Oil is injected from the entrance to the oil pipeline with the standard oil amount size, made described in the pour-point depressant reduction
Temperature of freezing of petroleum, the oil for reducing freezing point is set to promote the hydraulic pressure wiper to be moved in the oil pipeline,
So that the hydraulic pressure wiper strikes off the subzero paraffin of drop in the oil pipeline.
4. the method as described in claim 1, it is characterised in that the entrance by hydraulic pressure wiper from the oil pipeline is put
Before entering in the oil pipeline, in addition to：
The mark that length of the mending-leakage iron nail in the oil pipeline is more than the mending-leakage iron nail of preset length is obtained from mending-leakage record
Know, the mending-leakage records the corresponding relation for storing length of the mending-leakage iron nail in oil pipeline and mark；
Mending-leakage iron nail corresponding to the mark of the acquisition is taken out from the oil pipeline, enables the hydraulic pressure wiper smoothly
Moved in the oil pipeline.
5. a kind of paraffin removal unit of oil pipeline, it is characterised in that described device includes：
Determining module, for determining first time period, second time period and the 3rd period, the first time period is prior to described
Second time period, the second time period is prior to the 3rd period；
First conveyor module, in the first time period, being conveyed with the first default output oil amount size in oil pipeline
Oil, the described first default output oil amount size is more than standard oil amount size corresponding to the oil pipeline, so that the oil
Dissolve the part paraffin in the oil pipeline and take the oil pipeline out of with the oil；
Second conveyor module, in the second time period, output oil amount size to be preset in the oil pipeline with second
Transfer oil, the described second default output oil amount size is more than the described first default output oil amount size, so that the oil dissolves institute
State the part paraffin in oil pipeline and take the oil pipeline out of with the oil；
3rd conveyor module, within the 3rd period, output oil amount size to be preset in the oil pipeline with the 3rd
Transfer oil, the described 3rd default output oil amount size is more than the described second default output oil amount size, so that the oil dissolves institute
State the part paraffin in oil pipeline and take the oil pipeline out of with the oil；
Module is put into, for entrance of the hydraulic pressure wiper from the oil pipeline to be put into the oil pipeline, the hydraulic pressure
Wiper includes base and multigroup steel disc, and one end of every group of steel disc in multigroup steel disc is fixed on the end face of the base
On, there is one between every group of steel disc and the central shaft of the base more than 0 degree and be less than 90 degree of angle, described every group
The other end of steel disc contacts close to the entrance and with the inwall of the oil pipeline, and the base is away from the entrance；
Wax removal module, for injecting oil from the entrance to the oil pipeline with the standard oil amount size, make described
Oil promotes the hydraulic pressure wiper to be moved in the oil pipeline, so that the hydraulic pressure wiper strikes off the oil pipeline
In paraffin.
6. device as claimed in claim 5, it is characterised in that the hydraulic pressure wiper includes the first hydraulic pressure wiper, second
Hydraulic pressure wiper and the 3rd hydraulic pressure wiper, the nominal diameter of the first hydraulic pressure wiper are more than or equal to the oil pipeline
Internal diameter, the nominal diameter of the second hydraulic pressure wiper is more than the nominal diameter of the first hydraulic pressure wiper, the described 3rd
The nominal diameter of hydraulic pressure wiper is more than the nominal diameter of the second hydraulic pressure wiper；
It is described to be put into module, including：
First is put into unit, for the entrance of the first hydraulic pressure wiper from the oil pipeline to be put into the oil pipeline
In, oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted described the
One hydraulic pressure wiper moves in the oil pipeline, so that the first hydraulic pressure wiper strikes off the stone in the oil pipeline
Wax；
Second is put into unit, for the entrance of the second hydraulic pressure wiper from the oil pipeline to be put into the oil pipeline
In, oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted described the
Two hydraulic pressure wipers move in the oil pipeline, so that the second hydraulic pressure wiper strikes off the stone in the oil pipeline
Wax；
3rd is put into unit, for the entrance of the 3rd hydraulic pressure wiper from the oil pipeline to be put into the oil pipeline
In, oil is injected from the entrance to the oil pipeline with the standard oil amount size, the oil is promoted described the
Three hydraulic pressure wipers move in the oil pipeline, so that the 3rd hydraulic pressure wiper strikes off the stone in the oil pipeline
Wax.
7. device as claimed in claim 5, it is characterised in that described device also includes：
Injection module, for injecting pour-point depressant from the entrance to the oil pipeline；
The wax removal module, for injecting oil from the entrance to the oil pipeline with the standard oil amount size, make
The pour-point depressant reduces the temperature of freezing of petroleum, the oil for reducing freezing point is promoted the hydraulic pressure wiper in institute
State in oil pipeline and move, so that the hydraulic pressure wiper strikes off the paraffin in the oil pipeline.
8. device as claimed in claim 5, it is characterised in that described device also includes：
Acquisition module, it is more than preset length for obtaining length of the mending-leakage iron nail in the oil pipeline in being recorded from mending-leakage
The mark of mending-leakage iron nail, the mending-leakage records closes for storing length of the mending-leakage iron nail in oil pipeline and the corresponding of mark
System；
Module is taken out, for taking out mending-leakage iron nail corresponding to the mark of the acquisition from the oil pipeline, makes the hydraulic pressure
Wiper can be moved smoothly in the oil pipeline.
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| CN201410422720.7A CN105363740B (en) | 2014-08-25 | 2014-08-25 | The dewaxing method and device of a kind of oil pipeline |
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| CN201410422720.7A CN105363740B (en) | 2014-08-25 | 2014-08-25 | The dewaxing method and device of a kind of oil pipeline |
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| CN101397689A (en) * | 2008-10-30 | 2009-04-01 | 常州星海半导体器件有限公司 | Removal method of oil, wax and residual gum on diode surface |
| CN103421625A (en) * | 2012-05-15 | 2013-12-04 | 中国石油天然气股份有限公司 | Long-distance pipeline wax-cleaning agent and wax-cleaning conveying technology method |
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| US5032185A (en) * | 1990-05-21 | 1991-07-16 | Knapp Kenneth M | Method and apparatus for removing paraffin from a fouled pipeline |
| CN2133371Y (en) * | 1992-09-29 | 1993-05-19 | 机械电子工业部沈阳仪器仪表工艺研究所 | Wax scraper pipeline cleaning unit |
| CN1238023A (en) * | 1997-01-21 | 1999-12-08 | 巴西石油公司 | On-line thermo-chemical process for dewaxing of oil export pipelines |
| RU2133329C1 (en) * | 1997-10-30 | 1999-07-20 | Колчин Владимир Николаевич | Device for cleaning internal surface of well pipes and oil pipelines |
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| CN105363740A (en) | 2016-03-02 |
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