CN109577918A - Paraffin removal from oil well apparatus for eliminating sludge - Google Patents
Paraffin removal from oil well apparatus for eliminating sludge Download PDFInfo
- Publication number
- CN109577918A CN109577918A CN201910003155.3A CN201910003155A CN109577918A CN 109577918 A CN109577918 A CN 109577918A CN 201910003155 A CN201910003155 A CN 201910003155A CN 109577918 A CN109577918 A CN 109577918A
- Authority
- CN
- China
- Prior art keywords
- camshaft
- central tube
- gravity
- packer
- pressure cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
- E21B37/04—Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Abstract
The present invention relates to industrial gas oil underground completion technique field, in particular to a kind of paraffin removal from oil well apparatus for eliminating sludge.The device includes wirerope, gravity packer, reaction torque self-locking device, screw motor and milling cone, the gravity packer includes hammer body, packing element and central tube, hammer body lower end connects pressure cap, circulation port is provided on pressure cap, central tube upper end is articulated on pressure cap inner wall step surface, packing element is sleeved on central tube, and packing element is placed between pressure cap and pallet, and pallet is connected to central tube lower end.The present invention realize do not need by oil pipe from well by root out, do not need to inject any chemical agent, to internal surface of sleeve pipe wax removal good descaling effect, process is simple, reduces cost, and will not pollute payzone, will not damage oil pipe and other downhole tools yet.
Description
Technical field:
The present invention relates to industrial gas oil underground completion technique field, in particular to a kind of paraffin removal from oil well scale removal dress
It sets.
Background technique:
In petroleum natural gas exploration field, produced liquid in oil well body flows through oil pipe or internal surface of sleeve pipe, can wax deposition and production
It scales, these impurity, which accumulate over a long period, to be deposited on pipe string internal wall, and tubing string can be gradually blocked, and is influenced oil/gas well and is normally produced.Mesh
Mainly there is common wax removal scale removal method when preceding underground work: the modes such as paraffin removing with chemical method scale removal, ground high-pressure water jet are removed.
Wherein the method for paraffin removing with chemical method scale removal is to inject chemical agent from well head, is removed to chemical solution by chemical reaction
Scale and wax, this method can generate pollution to oil reservoir the disadvantage is that costly；Ground high-pressure water jet sweep-out method is
Oil pipe is taken out out of well by root, be transported to it is specific remove place, be purged with special equipment, operation process it is cumbersome and
It is costly.
Summary of the invention:
The technical problem to be solved in the present invention is to provide a kind of paraffin removal from oil well apparatus for eliminating sludge, the arrangement achieves do not need by
Oil pipe from well by root out, do not need to inject any chemical agent yet, to internal surface of sleeve pipe wax removal good descaling effect, process letter
It is single, cost is reduced, and payzone will not be polluted, oil pipe and other downhole tools will not be damaged.It is clear to overcome existing chemistry
Wax descaling method is costly, pollution is generated to oil reservoir, ground high-pressure water jet sweep-out method need by oil pipe from well by root
Out, the cumbersome and costly deficiency of operation process.
The technical solution used in the present invention is: a kind of paraffin removal from oil well apparatus for eliminating sludge, including wirerope, gravity packer,
Reaction torque self-locking device, screw motor and milling cone, the gravity packer include hammer body, packing element and central tube, the connection of hammer body lower end
Pressure cap is provided with circulation port on pressure cap, and central tube upper end is articulated on pressure cap inner wall step surface, and packing element is sleeved on central tube, glue
Cylinder is placed between pressure cap and pallet, and pallet is connected to central tube lower end；
The reaction torque self-locking device includes the camshaft with central passage, and camshaft top is set with groove body, groove body
Spring is mounted in multiple mounting grooves, spring outwards connect wiper block, and upper pressing cap, connecting cylinder are connected to groove body upper and lower side
And wiper block is limited, outer wall design in camshaft lower part has more valve cams, and more valve cams can push corresponding multiple locking keys to stretch
Out and be locked in locking key on tube inner wall, locking key by lower pressing cap limit, between camshaft and groove body, camshaft under
Bearing is mounted between pressure cap；
The hammer body of wirerope lower end connection gravity packer, gravity packer lower end connect camshaft, camshaft with
Screw motor is connected, and screw motor is connected with milling cone.
Outer wall design in camshaft lower part has three valve cams, which can push corresponding three locking keys to stretch out and make
Locking key is locked on tube inner wall.
Milling cone includes cone, and cone is equipped with cutting edge and hydrophthalmia, and cutting edge is made of hard alloy particle built-up welding.
The beneficial effects of the present invention are: the present invention realize do not need by oil pipe from well by root out, do not need to infuse yet
Enter any chemical agent, to internal surface of sleeve pipe wax removal good descaling effect, process is simple, reduces cost, and will not pollute payzone, will not
Oil pipe and other downhole tools are damaged.
Detailed description of the invention:
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is reaction torque self-locking device schematic diagram.
Specific embodiment:
As shown in Figure 1 and Figure 2, a kind of paraffin removal from oil well apparatus for eliminating sludge, including wirerope 1, gravity packer 2, reaction torque are self-locking
Device 3, screw motor 4 and milling cone 5, the gravity packer 2 include hammer body 21, packing element 24 and central tube 25, and 21 lower end of hammer body connects
Pressure cap 22 is connect, circulation port 23 is provided on pressure cap 22,25 upper end of central tube is articulated on 22 inner wall step surface of pressure cap, and packing element 24 is set with
On central tube 25, packing element 24 is placed between pressure cap 22 and pallet 26, and pallet 26 is connected to 25 lower end of central tube；
The reaction torque self-locking device 3 includes the camshaft 37 with central passage, and 37 top of camshaft is set with groove body 32,
It is mounted on spring 34 in multiple mounting grooves of groove body 32, connects wiper block 33 on the outside of spring 34, wiper block 33 is in groove body 32
It can extend and retract.Upper pressing cap 31, connecting cylinder 35 are connected to 32 upper and lower side of groove body and limit to wiper block 33, camshaft
The design of 37 lower part outer walls has more valve cams, and more valve cams can push corresponding multiple locking keys 38 to stretch out and lock locking key 38
On 6 inner wall of oil pipe, locking key 38 is limited by lower pressing cap 39, between camshaft 37 and groove body 32, camshaft 37 and lower pressing cap
Bearing 36 is mounted between 39；
The hammer body 21 of 1 lower end of the wirerope connection gravity packer 2,2 lower end of gravity packer connects camshaft 37, convex
Wheel shaft 37 is connected with screw motor 4, and screw motor 4 is connected with milling cone 5.
The design of 37 lower part outer wall of camshaft has three valve cams, which can push corresponding three locking keys 38 to stretch out
And it is locked in locking key 38 on 6 inner wall of oil pipe.
Milling cone 5 includes cone, and cone is equipped with cutting edge 51 and hydrophthalmia 52, and cutting edge 51 uses hard alloy particle built-up welding
It is made.
In use, setting the outer diameter of paraffin removal from oil well apparatus for eliminating sludge according to pipe aperture, guarantee that packer 2 can seal oil pipe
Inner wall, and guarantee that milling cone 5 can normally be cut.
Ground winch wirerope is by paraffin removal from oil well apparatus for eliminating sludge tripping in tubing string, and by self weight downlink, gravity is insulated
In the initial state, 1 pulling force of wirerope is born in upper end to device 2, and the gravity of screw motor 4 and milling cone 5 is born in lower end, in stretching shape
State, packing element 24 by external force, do not keep nature；After 5 downlink of milling cone encounters scale or wax, hammer body 21 can apply from gravity
Onto pressure cap 22, the spreading in the case where pressure cap 22 and pallet 26 squeeze of packing element 24 closes pipe aperture.High-pressure pump injects power from well head
Liquid, power fluid enter circulation port 23, followed by central tube 25,37 central passage of camshaft, screw motor 4, most afterwards through milling cone
Hydrophthalmia 52 sprays.Power fluid drives 4 output torque T of screw motor to milling cone 5, to cut scale or wax, 4 stator meeting of screw motor
The reaction torque T ', T ' for generating same size can be passed on camshaft 37, and 37 stress of camshaft rotation, cam pushes away locking key 38
Out, locking key 38 is engaged with tube inner wall realizes self-locking, and the reaction torque T ' of screw motor 4 is overcome with this, during this, righting
Block 33 is stretched out by 34 active force of spring, and forms frictional resistance with tube inner wall, this frictional resistance is greater than camshaft 37 and groove body
Stiction between 32, therefore reaction torque self-locking device 3 not can rotate.Screw motor 4 drives milling cone 5 to rotate, and cuts scale or wax,
The power fluid that hydrophthalmia 52 sprays rinses clast, recycles outside discharge well, until ground winch is withdrawn after tubing string is all removed completely
Wirerope 1 plays producing well wax removal apparatus for eliminating sludge, terminates operation.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments, those skilled in the art should understand that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (3)
1. a kind of paraffin removal from oil well apparatus for eliminating sludge, it is characterised in that: self-locking including wirerope (1), gravity packer (2), reaction torque
Device (3), screw motor (4) and milling cone (5), the gravity packer (2) include hammer body (21), packing element (24) and central tube
(25), hammer body (21) lower end connects pressure cap (22), is provided with circulation port (23) on pressure cap (22), central tube (25) upper end is articulated in pressure
On cap (22) inner wall step surface, packing element (24) is sleeved on central tube (25), and packing element (24) is placed in pressure cap (22) and pallet (26)
Between, pallet (26) is connected to central tube (25) lower end；
The reaction torque self-locking device (3) includes the camshaft (37) with central passage, and camshaft (37) top is set with groove body
(32), it is mounted on spring (34) in multiple mounting grooves of groove body (32), connects wiper block (33) on the outside of spring (34), upper pressing cap
(31), connecting cylinder (35) is connected to groove body (32) upper and lower side and limits to wiper block (33), camshaft (37) lower part outer wall
Design has more valve cams, and more valve cams can push corresponding multiple locking keys (38) to stretch out and locking key (38) is made to be locked in oil pipe
(6) on inner wall, locking key (38) by lower pressing cap (39) limit, between camshaft (37) and groove body (32), camshaft (37) and
Bearing (36) are mounted between lower pressing cap (39)；
The hammer body (21) of wirerope (1) lower end connection gravity packer (2), gravity packer (2) lower end connect camshaft
(37), camshaft (37) is connected with screw motor (4), and screw motor (4) is connected with milling cone (5).
2. paraffin removal from oil well apparatus for eliminating sludge described in accordance with the claim 1, it is characterised in that: camshaft (37) lower part outer wall is set
In respect of three valve cams, which can push corresponding three locking keys (38) to stretch out and locking key (38) is made to be locked in oil pipe
(6) on inner wall.
3. paraffin removal from oil well apparatus for eliminating sludge described in accordance with the claim 1, it is characterised in that: the milling cone (5) includes cone, cone
It is equipped with cutting edge (51) and hydrophthalmia (52), cutting edge (51) is made of hard alloy particle built-up welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003155.3A CN109577918B (en) | 2019-01-03 | 2019-01-03 | Wax-removing and descaling device for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003155.3A CN109577918B (en) | 2019-01-03 | 2019-01-03 | Wax-removing and descaling device for oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109577918A true CN109577918A (en) | 2019-04-05 |
| CN109577918B CN109577918B (en) | 2021-01-26 |
Family
ID=65915796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910003155.3A Active CN109577918B (en) | 2019-01-03 | 2019-01-03 | Wax-removing and descaling device for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109577918B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021991A (en) * | 2019-12-30 | 2020-04-17 | 长江大学 | Online cleaning device for oil pumping pipe of vertical well |
| CN113565467A (en) * | 2021-07-08 | 2021-10-29 | 太原理工大学 | Umbrella-shaped geothermal well descaling device and descaling method thereof |
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| RU2312206C1 (en) * | 2006-03-27 | 2007-12-10 | Рауф Рахимович Сафаров | Device for oil well flow string cleaning of paraffin, piston and scraper included in the device (variants) |
| CN201991491U (en) * | 2011-02-18 | 2011-09-28 | 张忠信 | Online pressurized descaling device for oil pipe |
| CN202325414U (en) * | 2011-12-12 | 2012-07-11 | 胡勇 | Scale removal stopper in oil and water tubing string |
| CN202391386U (en) * | 2011-11-28 | 2012-08-22 | 中国石油集团长城钻探工程有限公司 | Combination clearing device for seriously-formed scale of oil-water well drivepipe |
| CN103306640A (en) * | 2013-07-04 | 2013-09-18 | 东北石油大学 | Fluid power paraffin removal device of rodless pump oil recovery system |
| CN104033128A (en) * | 2014-06-18 | 2014-09-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Hydraulic delivery type tube scraper |
| CN204827378U (en) * | 2015-08-04 | 2015-12-02 | 中油测井技术服务有限责任公司 | Tubular well dredging tool |
| CN105604523A (en) * | 2015-12-25 | 2016-05-25 | 贵州高峰石油机械股份有限公司 | Method for improving pipe scraper and pipe scraper |
| CN106437622A (en) * | 2016-12-23 | 2017-02-22 | 牡丹江博实石油机械科技有限公司 | Hydraulic oil pipe scale borer |
| CN106522884A (en) * | 2016-12-23 | 2017-03-22 | 牡丹江博实石油机械科技有限公司 | Vibro-rammed oil tube descaling device |
-
2019
- 2019-01-03 CN CN201910003155.3A patent/CN109577918B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2312206C1 (en) * | 2006-03-27 | 2007-12-10 | Рауф Рахимович Сафаров | Device for oil well flow string cleaning of paraffin, piston and scraper included in the device (variants) |
| CN201991491U (en) * | 2011-02-18 | 2011-09-28 | 张忠信 | Online pressurized descaling device for oil pipe |
| CN202391386U (en) * | 2011-11-28 | 2012-08-22 | 中国石油集团长城钻探工程有限公司 | Combination clearing device for seriously-formed scale of oil-water well drivepipe |
| CN202325414U (en) * | 2011-12-12 | 2012-07-11 | 胡勇 | Scale removal stopper in oil and water tubing string |
| CN103306640A (en) * | 2013-07-04 | 2013-09-18 | 东北石油大学 | Fluid power paraffin removal device of rodless pump oil recovery system |
| CN104033128A (en) * | 2014-06-18 | 2014-09-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Hydraulic delivery type tube scraper |
| CN204827378U (en) * | 2015-08-04 | 2015-12-02 | 中油测井技术服务有限责任公司 | Tubular well dredging tool |
| CN105604523A (en) * | 2015-12-25 | 2016-05-25 | 贵州高峰石油机械股份有限公司 | Method for improving pipe scraper and pipe scraper |
| CN106437622A (en) * | 2016-12-23 | 2017-02-22 | 牡丹江博实石油机械科技有限公司 | Hydraulic oil pipe scale borer |
| CN106522884A (en) * | 2016-12-23 | 2017-03-22 | 牡丹江博实石油机械科技有限公司 | Vibro-rammed oil tube descaling device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021991A (en) * | 2019-12-30 | 2020-04-17 | 长江大学 | Online cleaning device for oil pumping pipe of vertical well |
| CN113565467A (en) * | 2021-07-08 | 2021-10-29 | 太原理工大学 | Umbrella-shaped geothermal well descaling device and descaling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109577918B (en) | 2021-01-26 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200930 Address after: 100120 Beijing Xicheng District six laying Kang Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Applicant before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |
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| GR01 | Patent grant |