CN106917601B - Wax scraper and method for washing and dewaxing heavy oil well - Google Patents
Wax scraper and method for washing and dewaxing heavy oil well Download PDFInfo
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- CN106917601B CN106917601B CN201510997942.6A CN201510997942A CN106917601B CN 106917601 B CN106917601 B CN 106917601B CN 201510997942 A CN201510997942 A CN 201510997942A CN 106917601 B CN106917601 B CN 106917601B
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- wax
- heavy oil
- paraffin
- scraper
- oil wells
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- 239000000295 fuel oil Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005406 washing Methods 0.000 title abstract 3
- 239000001993 wax Substances 0.000 claims abstract description 124
- 239000012188 paraffin wax Substances 0.000 claims abstract description 107
- 239000003921 oil Substances 0.000 claims abstract description 55
- 239000007864 aqueous solution Substances 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 239000003129 oil well Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 17
- 239000000284 extract Substances 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 238000004090 dissolution Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 abstract 1
- 238000007790 scraping Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- XMHIUKTWLZUKEX-UHFFFAOYSA-N hexacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O XMHIUKTWLZUKEX-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B37/02—Scrapers specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a paraffin scraper and a method for washing and dewaxing a heavy oil well, and belongs to the technical field of downhole operation. The method comprises the following steps: judging whether the distance from the wellhead of the heavy oil well to the lowest end of a wax section of a casing in the heavy oil well is smaller than the distance from the lowest end of an oil pipe in the heavy oil well to the bottom of the heavy oil well; when the judgment is yes, installing a wax scraper on an oil pipe at the wellhead of the heavy oil well, wherein the small end of the wax scraper is positioned above the large end; putting the wax scraper into the casing along with the oil pipe, and scraping wax from the wax section in the casing; and circularly washing the heavy oil well, and pumping the wax scraped by the wax scraper out of the heavy oil well. Wax attached to the inner wall of the sleeve is scraped by the wax scraper, so that the wax is separated from the inner wall of the sleeve, and then the aqueous solution of the wax dissolving agent is injected into the sleeve, so that the contact area of the wax in the sleeve and the aqueous solution of the wax dissolving agent is increased, and the dissolving and cleaning effects of the aqueous solution of the wax dissolving agent on the wax are improved.
Description
Technical field
The present invention relates to underground work technical field, in particular to the method for a kind of paraffin scraper and heavy oil wells well-flushing solution wax.
Background technique
Heavy oil wells are a kind of oil wells of output viscous crude, and casing and oil pipe are provided in heavy oil wells, and the oil pipe setting exists
In casing；Containing a large amount of wax in viscous crude in heavy oil wells, wax is easy from being precipitated and be attached on internal surface of sleeve pipe in viscous crude,
Wax on internal surface of sleeve pipe forms wax section, and the wax section in casing can reduce decentralization or the speed that goes out of the oil pipe in casing
Degree, it is therefore desirable to well-flushing solution wax often be carried out to heavy oil wells, the wax being attached in casing is washed.
Currently, the method for heavy oil wells well-flushing solution wax is: by the aqueous solution sprue bushing of Wax dissolving agent, to what is be precipitated in casing
Wax is dissolved and is cleaned.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
The wax being precipitated in casing is all adhering closely to internal surface of sleeve pipe, aqueous solution and the precipitation of the Wax dissolving agent of sprue bushing
Wax contact area is small, and the aqueous solution of Wax dissolving agent is dissolved to the wax in casing and the poor effect of cleaning, and can not clean dry
Only it is tightly attached to the wax of internal surface of sleeve pipe.
Summary of the invention
In order to solve problems in the prior art, the embodiment of the invention provides a kind of paraffin scraper and heavy oil wells well-flushing solution waxes
Method.The technical solution is as follows:
On the one hand, the embodiment of the invention provides a kind of paraffin scraper, the paraffin scraper includes:
Connecting tube, the both ends of connecting tube with oil pipe for connecting；And
Paraffin cutting cylinder, paraffin cutting cylinder include big end, small end and the circular conical surface for connecting big end and small end, the small end of paraffin scraper
It is sleeved in connecting tube, the big end of paraffin cutting cylinder is equipped with multiple openings for being fitted in internal surface of sleeve pipe, circular conical surface.
Optionally, connecting tube, which is located on the outer and tube wall close to paraffin scraper small end of paraffin cutting cylinder, is provided with multiple through-holes.
Optionally, multiple through-holes surround and are uniformly arranged on the tube wall of connecting tube.
Optionally, multiple split rings around and be uniformly arranged on the circular conical surface of paraffin cutting cylinder.
Optionally, the edge of paraffin cutting cylinder big end is provided with cutting edge.
On the other hand, the embodiment of the invention also provides a kind of methods of heavy oil wells well-flushing solution wax, which comprises
S10, judges whether thick oil well mouth to wax section the lowermost distance of heavy oil wells middle sleeve is less than in heavy oil wells
Oil pipe bottom to viscous crude bottom distance；
S20 installs the paraffin scraper, the paraffin cutting when S10 is when being judged as YES on the oil pipe at thick oil well mouth
The small end of device is located at the top of big end；
S30 by paraffin scraper in oil pipe tripping in casing, and carries out paraffin cutting to the wax section in casing；
S40 carries out circulation well cleanup to heavy oil wells, and the wax that paraffin scraper is struck off extracts heavy oil wells out.
Optionally, S40 carries out circulation well cleanup to heavy oil wells, and the wax that paraffin scraper is struck off extracts heavy oil wells out, comprising:
S41 injects the aqueous solution of Wax dissolving agent, the wax that the aqueous solution of Wax dissolving agent strikes off paraffin scraper into the casing of heavy oil wells
Matter dissolution；
Aqueous solution dissolved with wax is pumped into oil pipe by the through-hole on paraffin scraper, and will be dissolved with by oil pipe by S42
The aqueous solution of wax extracts heavy oil wells out.
Optionally, the aqueous temperature of the Wax dissolving agent of sprue bushing is between 60 degrees Celsius to 97 degrees Celsius.
Optionally, the method also includes:
S11 pulls up heavy oil wells inner oil tube, makes thick oil well mouth to heavy oil wells middle sleeve when S10 is when being judged as NO
Wax section the lowermost distance be less than heavy oil wells inner oil tube bottom to the distance of viscous crude bottom, enter back into S20.
Optionally, the method also includes:
S50 repeats to carry out paraffin cutting to the wax section of casing using paraffin scraper；
S60 stops the aqueous solution that Wax dissolving agent is injected into casing, and the flowline from heavy oil wells.
Technical solution provided in an embodiment of the present invention has the benefit that
The wax being attached on internal surface of sleeve pipe is struck off by paraffin scraper, so that wax is separated with internal surface of sleeve pipe, then to set
The area of the aqueous solution of injection Wax dissolving agent in pipe, the aqueous solution of the wax contact Wax dissolving agent separated with casing is larger, improves molten
Dissolution and cleaning effect of the aqueous solution of cerate to wax, the aqueous solution for dissolving wax can extract heavy oil wells out by paraffin scraper again,
Circulation well cleanup is achieved the purpose that；Meanwhile this method also extracts the high viscous crude of the stickiness being attached in casing out heavy oil wells.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of paraffin scraper structural schematic diagram that the embodiment of the present invention one provides；
Fig. 2 is a kind of method flow diagram of heavy oil wells well-flushing solution wax provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of construction schematic diagram of the method for heavy oil wells well-flushing solution wax provided by Embodiment 2 of the present invention；
Fig. 4 is a kind of method flow diagram of heavy oil wells well-flushing solution wax provided by Embodiment 2 of the present invention；
Fig. 5 is a kind of method flow diagram of heavy oil wells well-flushing solution wax provided by Embodiment 2 of the present invention；
Fig. 6 is a kind of method flow diagram of heavy oil wells well-flushing solution wax provided by Embodiment 2 of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
The embodiment of the invention provides a kind of paraffin scrapers 1, and referring to Fig. 1, the paraffin scraper 1 includes:
Connecting tube 11, the both ends of connecting tube 11 with oil pipe for connecting；And
Paraffin cutting cylinder 12, paraffin cutting cylinder 12 include big end, small end and the circular conical surface for connecting big end and small end, paraffin scraper 1
Small end be sleeved in connecting tube 11, the big end of paraffin cutting cylinder 12 is equipped with multiple openings for being fitted in internal surface of sleeve pipe, circular conical surface
121。
In the application of the present embodiment, connecting tube 11 is connect close to one end of 12 small end of paraffin cutting cylinder with oil pipe, connecting tube 11
The other end connected pipes, i.e., when being disposed with oil pipe in oil well, connecting tube 11 can be chosen whether according to actual application environment
The other end can be connect with the oil pipe in oil well；After the connecting tube 11 of paraffin scraper 1 is connect with oil pipe, paraffin scraper 1 is passed through into oil pipe
It protrudes into the casing of oil well, and ensures that the big end of paraffin cutting cylinder 12 is located at the lower section of small end, the big end of paraffin cutting cylinder 12 is in casing
Wall carries out paraffin cutting.
The present embodiment carries out paraffin cutting to the inner wall of casing by the big end of paraffin cutting cylinder 12, will with the lower section of paraffin cutting cylinder 12
It is detached from opening 121 of the wax indentation of casing on the circular conical surface of paraffin cutting cylinder 12, and enters the other side of paraffin cutting cylinder 12, so that
The wax for being detached from casing will not impact the paraffin cutting of the inner wall of 12 pairs of casings of paraffin cutting cylinder.
Optionally, connecting tube 11, which is located on the outer and tube wall close to 1 small end of paraffin scraper of paraffin cutting cylinder 12, is provided with multiple through-holes
111。
Through-hole 111 is set by being located on tube wall of the paraffin cutting cylinder 12 outside and close to 1 small end of paraffin scraper in connecting tube 11, can be incited somebody to action
The exterior space connection oil pipe of connecting tube 11 can will contain after the wax that paraffin cutting cylinder 12 strikes off is dissolved in the aqueous solution of Wax dissolving agent
The aqueous solution of wax extracts oil pipe producing well side by side out by through-hole 111.
Optionally, multiple through-holes 111 surround and are uniformly arranged on the tube wall of connecting tube 11.
Optionally, multiple openings 121 surround and are uniformly arranged on the circular conical surface of paraffin cutting cylinder 12.
Optionally, the edge of 12 big end of paraffin cutting cylinder is provided with cutting edge；The edge setting cutting edge of 12 big end of paraffin cutting cylinder can
More quickly and efficiently the wax for being attached to internal surface of sleeve pipe is struck off, meanwhile, it can effectively reduce and be attached in casing
Resistance of the wax of wall to 12 big end of paraffin cutting cylinder.
Optionally, connecting tube 11 can be connect by connector 13 with oil pipe.
In the present embodiment, by the way that cutting edge is arranged at the edge of 12 big end of paraffin cutting cylinder, so that 12 big end paraffin cutting of paraffin cutting cylinder
Effect is more preferable, and by being located on the outer and tube wall close to 1 small end of paraffin scraper of paraffin cutting cylinder 12 in connecting tube 11, setting through-hole 111 can
The aqueous solution containing wax is extracted out oil pipe producing well side by side by through-hole 111；1 structure of this paraffin scraper is simple, easy to use, right
The paraffin cutting effect of internal surface of sleeve pipe is preferable.
Embodiment two
The embodiment of the invention also provides a kind of methods of heavy oil wells well-flushing solution wax, referring to figs. 2 and 3, the method packet
It includes:
S10, judges whether thick oil well mouth to wax section the lowermost distance of heavy oil wells middle sleeve 2 is less than in heavy oil wells
3 bottom of oil pipe to viscous crude bottom distance；
S20, when S10 is when being judged as YES, paraffin cutting of the installation as described in embodiment one on the oil pipe 3 at thick oil well mouth
Device 1, the small end of paraffin scraper 1 are located at the top of big end；
S30 by paraffin scraper 1 in 3 tripping in casing 2 of oil pipe, and carries out paraffin cutting to the wax section in casing 2；
S40 carries out circulation well cleanup to heavy oil wells, and the wax that paraffin scraper 1 is struck off extracts heavy oil wells out.
In the present embodiment, by determining wax section the lowermost of thick oil well mouth to heavy oil wells middle sleeve 2 apart from small
Distance in 3 bottom of heavy oil wells inner oil tube to viscous crude bottom ensure that the paraffin scraper 1 at thick oil well mouth can be with oil pipe 3
The wax section bottom for reaching casing 2 allows paraffin scraper 1 to strike off the wax for being all attached to 2 inner wall of casing.
In the present embodiment, paraffin scraper 1 can rely on 3 weight of oil pipe to strike off the wax being attached on 2 inner wall of casing, so that wax
Matter is separated with 2 inner wall of casing, this process can be realized without additional other power sources, easy to use, and molten wax is injected into casing 2
After the aqueous solution of agent, the area of the aqueous solution of the wax contact Wax dissolving agent isolated with casing 2 is larger, improves the water-soluble of Wax dissolving agent
Dissolution and cleaning effect of the liquid to wax, and also clean up the wax on 2 inner wall of casing.
Referring to Fig. 3 and Fig. 4, optionally, S40 carries out circulation well cleanup to heavy oil wells, and the wax that paraffin scraper 1 is struck off is extracted out
Heavy oil wells, comprising:
S41 injects the aqueous solution of Wax dissolving agent into the casing 2 of heavy oil wells, what the aqueous solution of Wax dissolving agent struck off paraffin scraper 1
Wax dissolution；
Aqueous solution dissolved with wax is pumped into oil pipe 3 by the through-hole 111 on paraffin scraper 1 by S42, and will by oil pipe 3
Aqueous solution dissolved with wax extracts heavy oil wells out；
Referring to fig. 4, inlet 21 and liquid outlet 31 is respectively set on the casing 2 and oil pipe 3 at thick oil well mouth, into
Pump truck pipeline is connected on liquid mouth 21, injects the aqueous solution of Wax dissolving agent into casing 2 by pump truck pipeline, is connected and is driven in liquid outlet 31
Dynamic pump extracts the aqueous solution that wax is dissolved in casing 2 out heavy oil wells by transfer tube.
Optionally, when the aqueous temperature of Wax dissolving agent is less than 60 degrees Celsius, what the aqueous solution of Wax dissolving agent dissolved wax
Effect is poor, and when the aqueous temperature of Wax dissolving agent is greater than 97 degrees Celsius, the aqueous solution of the higher Wax dissolving agent of temperature be may cause
Safety accident occurs for the viscous crude detonation in heavy oil wells；Therefore, the aqueous temperature of the Wax dissolving agent of sprue bushing 2 is at 60 degrees Celsius
To between 97 degrees Celsius.
Referring to Fig. 5, optionally, method further include:
S11 pulls up heavy oil wells inner oil tube 3, covers thick oil well mouth into heavy oil wells when S10 is when being judged as NO
Wax section the lowermost distance of pipe 2 is less than 3 bottom of heavy oil wells inner oil tube to the distance of viscous crude bottom, enters back into S20；
Before installing paraffin scraper 1, pulling up heavy oil wells inner oil tube 3 is the paraffin cutting that ensure that at thick oil well mouth
Device 1 can reach the wax section bottom of casing 2 with oil pipe 3, complete paraffin cutting.
Optionally, before S11, for fast implement in subsequent operation rise or lower drain line 3, can first will be in oil pipe 3
Sucker rod rise；It should be noted that the case where being not easy out in oil pipe 3 if there is sucker rod, it can not be from oil pipe 3
In play out sucker rod.
Referring to Fig. 6, optionally, method further include:
S50 repeats to carry out paraffin cutting to the wax section of casing 2 using paraffin scraper 1；
S60 stops the aqueous solution that Wax dissolving agent is injected into casing 2, and flowline 3 from heavy oil wells；
By driving upside down oil pipe 3, oil pipe 3 drives paraffin scraper 1 to realize that paraffin scraper 1 repeats to carry out the wax section of casing 2
Paraffin cutting achievees the purpose that thoroughly remove the wax being attached on 2 inner wall of casing；After completing to the paraffin removal of 2 inner wall of casing, Ji Keting
The aqueous solution of Wax dissolving agent is only injected into casing 2, flowline 3 from heavy oil wells can dismantle lower paraffin scraper after playing flowline 3
1, if being attached with wax on oil pipe 3, can also be purged outside heavy oil wells to being attached with wax on oil pipe 3.
The present embodiment, paraffin scraper 1 is installed on oil pipe 3, and paraffin scraper 1 relies on 3 weight of oil pipe that will be attached on 2 inner wall of casing
Wax is struck off, and additional other power sources are not necessarily to, easy to use, then 60 degrees Celsius to 97 degrees Celsius of molten wax is injected into casing 2
The aqueous solution of agent dissolves the wax in casing 2, improves dissolution and cleaning effect of the aqueous solution of Wax dissolving agent to wax,
The aqueous solution for dissolving wax can extract heavy oil wells out by paraffin scraper 1 again, achieve the purpose that circulation well cleanup；Meanwhile this method
Will be attached to the stickiness in casing 2 it is high viscous crude extraction heavy oil wells, it is therefore prevented that because viscous crude accumulated in casing 2 excessively occur it is quick-fried
Combustion, has ensured the operation safety of heavy oil wells.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method of heavy oil wells well-flushing solution wax, which is characterized in that the described method includes:
S10, judges whether thick oil well mouth to wax section the lowermost distance of the heavy oil wells middle sleeve is less than the viscous crude
Well oil pipe bottom to the viscous crude bottom distance；
S20 installs paraffin scraper when S10 is when being judged as YES on the oil pipe at the thick oil well mouth, the paraffin scraper it is small
End is located at the top of big end；
The paraffin scraper includes:
Connecting tube, the both ends of the connecting tube with oil pipe for connecting；And
Paraffin cutting cylinder, the paraffin cutting cylinder include big end, small end and the circular conical surface for connecting big end and small end, the paraffin scraper
Small end is sleeved in the connecting tube, and the big end of the paraffin cutting cylinder is equipped with more for being fitted in internal surface of sleeve pipe, the circular conical surface
A opening；
S30 by the paraffin scraper in the oil pipe tripping in described sleeve pipe, and carries out paraffin cutting to the wax section in described sleeve pipe；
S40 carries out circulation well cleanup to the heavy oil wells, and the wax that the paraffin scraper is struck off extracts the heavy oil wells out,
Described to carry out circulation well cleanup to the heavy oil wells, the wax that the paraffin scraper is struck off extracts the heavy oil wells out, comprising:
Inject the aqueous solution of Wax dissolving agent in the casing of S41, Xiang Suoshu heavy oil wells, the aqueous solution of the Wax dissolving agent is by the paraffin scraper
The wax dissolution struck off；
Aqueous solution dissolved with wax is pumped into the oil pipe by the through-hole on the paraffin scraper, and passes through the oil pipe by S42
Extract the aqueous solution dissolved with wax out the heavy oil wells, the through-hole, which is arranged, is located at the paraffin cutting cylinder in the connecting tube
On outer and tube wall close to the paraffin scraper small end.
2. the method according to claim 1, wherein the aqueous temperature of the Wax dissolving agent of injection described sleeve pipe
Between 60 degrees Celsius to 97 degrees Celsius.
3. the method according to claim 1, wherein the method also includes:
S11 pulls up the heavy oil wells inner oil tube, makes the thick oil well mouth to the viscous crude when S10 is when being judged as NO
Wax section the lowermost distance of well middle sleeve is less than the distance of heavy oil wells inner oil tube bottom to the viscous crude bottom,
Enter back into S20.
4. the method according to claim 1, wherein the method also includes:
S50 repeats to carry out paraffin cutting to the wax section of described sleeve pipe using the paraffin scraper；
S60 stops the aqueous solution that the Wax dissolving agent is injected into described sleeve pipe, and the oil pipe out from the heavy oil wells.
5. the method according to claim 1, wherein the connecting tube is located at outside the paraffin cutting cylinder and close to described
Multiple through-holes are provided on the tube wall of paraffin scraper small end.
6. according to the method described in claim 5, it is characterized in that, the multiple through-hole surround and is uniformly arranged on the connection
On the tube wall of pipe.
7. the method according to claim 1, wherein the multiple split ring around and be uniformly arranged on the paraffin cutting
On the circular conical surface of cylinder.
8. the method according to claim 1, wherein the edge of the paraffin cutting cylinder big end is provided with cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997942.6A CN106917601B (en) | 2015-12-26 | 2015-12-26 | Wax scraper and method for washing and dewaxing heavy oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997942.6A CN106917601B (en) | 2015-12-26 | 2015-12-26 | Wax scraper and method for washing and dewaxing heavy oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106917601A CN106917601A (en) | 2017-07-04 |
| CN106917601B true CN106917601B (en) | 2019-03-15 |
Family
ID=59455081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510997942.6A Active CN106917601B (en) | 2015-12-26 | 2015-12-26 | Wax scraper and method for washing and dewaxing heavy oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106917601B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219167B (en) * | 2019-11-13 | 2021-11-09 | 牡丹江天庆石油机械设备有限公司 | Oil field prevents hindering hole enlargement paraffin scraper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB663675A (en) * | 1949-07-12 | 1951-12-27 | Joseph Caslake Junior | Improvements in or relating to devices for scratching or brushing the walls of bores |
| CN1121981A (en) * | 1993-06-16 | 1996-05-08 | 井流技术有限公司 | Well wall cleaning tool with scrap element |
| CN2623870Y (en) * | 2003-04-21 | 2004-07-07 | 李建忠 | Novel paraffin cleaner for pumping well |
| CN2663650Y (en) * | 2003-10-13 | 2004-12-15 | 郝柏树 | Paraffin cutting cleaner for pumping well |
| CN204754873U (en) * | 2015-05-19 | 2015-11-11 | 长江大学 | Belt cleaning device is scraped to sleeve pipe |
| CN204804775U (en) * | 2015-06-18 | 2015-11-25 | 中国石油化工股份有限公司 | A wax section of thick bamboo is scraped to oil gas well wax removal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090272524A1 (en) * | 2008-05-02 | 2009-11-05 | Voth Rickey C | Method and apparatus for cleaning internal surfaces of downhole casing strings and other tubular goods |
-
2015
- 2015-12-26 CN CN201510997942.6A patent/CN106917601B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB663675A (en) * | 1949-07-12 | 1951-12-27 | Joseph Caslake Junior | Improvements in or relating to devices for scratching or brushing the walls of bores |
| CN1121981A (en) * | 1993-06-16 | 1996-05-08 | 井流技术有限公司 | Well wall cleaning tool with scrap element |
| CN2623870Y (en) * | 2003-04-21 | 2004-07-07 | 李建忠 | Novel paraffin cleaner for pumping well |
| CN2663650Y (en) * | 2003-10-13 | 2004-12-15 | 郝柏树 | Paraffin cutting cleaner for pumping well |
| CN204754873U (en) * | 2015-05-19 | 2015-11-11 | 长江大学 | Belt cleaning device is scraped to sleeve pipe |
| CN204804775U (en) * | 2015-06-18 | 2015-11-25 | 中国石油化工股份有限公司 | A wax section of thick bamboo is scraped to oil gas well wax removal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106917601A (en) | 2017-07-04 |
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