CN105317402A - Paraffin removal equipment for flowing well - Google Patents
Paraffin removal equipment for flowing well Download PDFInfo
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- CN105317402A CN105317402A CN201410262115.8A CN201410262115A CN105317402A CN 105317402 A CN105317402 A CN 105317402A CN 201410262115 A CN201410262115 A CN 201410262115A CN 105317402 A CN105317402 A CN 105317402A
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- paraffin
- reversing arrangement
- cleaner
- paraffin removal
- removal unit
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Abstract
The invention relates to the field of petroleum drilling, in particular to paraffin removal equipment for a flowing well. The paraffin removal equipment for the flowing well comprises a first reversing device arranged at a first position in the flowing well, a second reversing device arranged at a second position in the flowing well, and a paraffin removal device with paraffin scraping tiles, wherein the paraffin removal device is arranged between the first position and the second position and is structured in the mode that the paraffin removal device can move between the first position and the second position, and the moving direction is transformed into the direction opposite to the original direction when the paraffin removal device collides with the first reversing device or the second reversing device. According to the paraffin removal equipment, the gravity and the fluid kinetic energy of the flowing well can be effectively utilized so that the paraffin removal equipment can move upwards and fall back repeatedly and carry out paraffin removal work at the same time on the condition that almost no external energy is input.
Description
Technical field
The present invention relates to field of oil drilling, particularly relate to a kind of paraffin removal unit for flowing well.
Background technology
In the prior art, the measures such as hot-washing wax remover, paraffin scraper wax removal, paraffin control with inhibitor are mainly adopted to the Paraffin Removal of flowing well.
Hot-washing wax remover be flowing material (as hot water or deep fat etc.) after the heating of ground by circulating heat transfer in the wellbore to wellbore fluids, improve the temperature of wellbore fluids, be dissolved in crude oil again after making wax melt deposition, thus reach the object of wax removal.
Paraffin scraper wax removal utilizes ground winch to carry out, around the steel wire on winch drum through after pulley by paraffin removal tool under lubricator in oil pipe, and up and down at tubing wax position, wax deposit is struck off, carries out pit shaft by liquid stream.
Paraffin control with inhibitor is that wax-proofing agent reaches wax control object dissolve mixing in wellbore fluids after by adding aqueous chemical wax-proofing agent or connect the pipe nipple that Solid-state Chemistry wax-proofing agent is housed in pit shaft in oil pipe.
Hot-washing wax remover and paraffin scraper wax removal all need regularly to carry out on-the-spot workover treatment, and this can affect production output, can cause extra loss in operation process to equipment simultaneously, even likely the accidents such as crown drill Ka Jing occur; Utilizing various chemical agent to carry out Paraffin Removal is also one of main paraffin removal and control method, and this method is widely adopted, but wax control result is comparatively large by the impact of the factor such as labor management and oil well submergence, adds burden to oil well management.
Summary of the invention
For the defect of existing several Paraffin Removal measure, such as need (manually) workload etc. of regularly closing well operations or increasing oil well management, the present invention proposes a kind of paraffin removal unit, its paraffin cutting parts utilize flowing well self-energy constantly automatically to move up and down in oil pipe, make wax can not form accumulation in oil pipe, and be eliminated, realize the object of flowing well Paraffin Removal.
For the problems referred to above, the present invention proposes a kind of paraffin removal unit for flowing well, wherein, described paraffin removal unit comprises: the first reversing arrangement being arranged in the first position in flowing well; Be arranged in the second reversing arrangement of the second position in flowing well; There is the paraffin cleaner of paraffin cutting tile, described paraffin cleaner is arranged between described primary importance and the described second place, wherein, described paraffin cleaner is constructed to be permeable to move between the first position and the second position, and when it collides described first reversing arrangement or described second reversing arrangement, the direction of motion change into original side in the opposite direction.
Preferably, described paraffin cleaner comprises cylindrical body and is positioned at the paraffin cutting tile on outside described cylindrical body, and described paraffin cutting tile is switched by tile spring and acting between expansion state and rounding state of fluid.When paraffin cutting tile is in expansion state, its tile can wipe the wax be positioned on tube wall off, realizes wax removal function.
Preferably, the maximum gauge of described paraffin cutting tile under expansion state is 61mm, and the maximum gauge under rounding state is 56mm.When selecting described diameter, and can ensure to reach best compromise between paraffin cutting effect in reduction flow resistance.Herein, term " maximum gauge " represents that paraffin cutting tile is apart from the twice of the distance between position farthest, described cylindrical body axis and described cylindrical body axis under expansion or the state of drawing in.(paraffin cutting tile can be interpreted as " radius " apart from the distance between position farthest, described cylindrical body axis and described cylindrical body axis).
Preferably, described paraffin cleaner also comprises the reversing bar of the inner passage being arranged in described cylindrical body, and the commutation of described reversing bar makes described inner passage switch between open mode and closed condition.When paraffin cleaner and the first reversing arrangement collide, reversing bar moves down in (direction away from well head) relative to cylindrical body, and cause reversing bar to separate with the abutment of cylindrical body inwall, therefore the inner passage of cylindrical body is opened.When paraffin cleaner and the second reversing arrangement collide, reversing bar is relative to cylindrical body being moved (direction towards well head), and cause the abutment of the inwall of reversing bar and cylindrical body stuck, therefore the inner passage of cylindrical body is disconnected.
Preferably, described reversing bar is configured by and commutates with described first reversing arrangement or with the collision of described second reversing arrangement.During wax removal, first make paraffin removal device for oil pipe reversing bar open the inner passage of paraffin cleaner, paraffin cleaner falls after rise by deadweight; When reaching the position of the second reversing arrangement, collide with it, reversing bar cuts out paraffin cleaner inner passage, makes paraffin cleaner up by bottom working fluid (gas) energy.The fluid upwards sprayed can not by the inner passage of cylindrical body, but flows from the annular space of cylindrical body and oil pipe, by paraffin cutting tile from rounding state top to expansion state, wipes wax off time up by the paraffin cutting tile and pipe friction of being close to tube inner wall; When reaching the first reversing arrangement place, reversing bar and first reversing arrangement of paraffin cleaner collide, the inner passage of paraffin cleaner opened by reversing bar, the fluid then upwards sprayed can branch to the inner passage of cylindrical body, paraffin cleaner falls after rise by deadweight, and meanwhile, fluid reduces the impact of paraffin cutting tile, be aided with the effect of tile spring, paraffin cutting tile is converted to rounding state by expansion state.In this way, repeat the process of descending falling and up wax removal, realize automatic wax removal.
Preferably, described first reversing arrangement comprises the first buffer spring and the catcher for described paraffin cleaner.When needs reclaim or overhaul paraffin removal device for oil pipe, by catcher, paraffin cleaner can be caught taking-up in first position.So, easy to clean, makes equipment to supply Long-Time Service.
Preferably, described first reversing arrangement is arranged in well head, and when described paraffin cleaner moves to the described second place from described primary importance, described inner passage is opened, when described paraffin cleaner moves to described primary importance from the described second place, described inner passage cuts off.
Preferably, described second reversing arrangement comprises the second buffer spring and screens device, and described screens device is configured to the specific location described second reversing arrangement being fixed to flowing well.Second reversing arrangement can be installed on down-hole wax deposition point to shaft bottom any tubing coupling position.
Preferably, described first buffer spring or described second buffer spring are configured to: when described paraffin cleaner and described first reversing arrangement or described second reversing arrangement collide, the kinetic energy of described paraffin cleaner is correspondingly converted to elastic potential energy and discharges by described first buffer spring or described second buffer spring, makes described paraffin cleaner change the direction of motion.In this way, the first buffer spring or the second buffer spring play the effect of buffering, slow down collision impact when paraffin cleaner rises to well head or falls after rise, extend the application life of whole paraffin removal unit, also reduce the probability of happening of down-hole accident simultaneously.
Preferably, described paraffin cleaner moves to the described second place by gravity from described primary importance, and moves to described primary importance by the fluid impact of flowing well from the described second place.
Effectively can utilize the fluid dynamic energy of gravity and flowing well according to paraffin removal unit of the present invention, when almost inputting without external energy, up and falling repeatedly, carries out wax removal work simultaneously.Arrange, use very flexibly, can not man-hour be delayed, also can not increase the burden of labor management.Split type structure make change, clean very convenient; The design of spring makes the impact force of paraffin cleaner be cushioned, and extends the application life of equipment.
Above-mentioned technical characteristic various applicable mode can combine or substituted by the technical characteristic of equivalence, as long as can reach object of the present invention.
Accompanying drawing explanation
Also will be described in more detail the present invention with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 shows according to the paraffin removal unit for flowing well of the present invention;
Fig. 2 shows the enlarged diagram of the encircled portion in Fig. 1.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the ratio of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
The present invention proposes a kind of paraffin removal unit 10 for flowing well.
Fig. 1 shows according to the paraffin removal unit 10 for flowing well of the present invention.As seen from Figure 1, paraffin removal unit 10 comprises: be arranged in the first reversing arrangement 3 of first position (being such as well head place) in flowing well, the second reversing arrangement 1 of the second position be arranged in flowing well and paraffin cleaner 2.As seen from Figure 1, paraffin cleaner 2 is arranged between the first reversing arrangement 3 and the second reversing arrangement 1.Wherein, paraffin cleaner 2 is constructed to be permeable to move between the first reversing arrangement 3 and the second reversing arrangement 1, and when it collides the first reversing arrangement 3 or the second reversing arrangement 1, the direction of motion change into original side in the opposite direction.
First paraffin cleaner 2 is specifically introduced below.Fig. 2 shows the enlarged diagram of paraffin cleaner 2.Can be clear that by Fig. 2, paraffin cleaner 2 has cylindrical body 6.Paraffin cutting tile 5 is furnished with outside the barrel of cylindrical body 6.Paraffin cutting tile 5 loads by tile spring, to switch between expansion state and rounding state.Preferably, the maximum gauge of paraffin cutting tile 5 under expansion state is 61mm, and the maximum gauge under rounding state is 56mm.Herein, term " maximum gauge " represents that paraffin cutting tile is apart from the twice of the distance between position farthest, described cylindrical body axis and described cylindrical body axis under expansion or the state of drawing in.(paraffin cutting tile can be interpreted as " radius " apart from the distance between position farthest, described cylindrical body axis and described cylindrical body axis).Under expansion state, the maximum gauge of paraffin cutting tile 5 can be set to the internal diameter close to oil pipe.When paraffin cutting tile 5 is in expansion state, its tile can wipe the wax be positioned on tube wall off, realizes wax removal function.
The barrel of cylindrical body 6 has the through hole 7 and through hole 8 that extend to outside from inside, therefore through hole 7, through hole 8 can form with the inner passage 10 of cylindrical body 6 path being used for fluid circulation jointly.
Paraffin cleaner 2 also comprises the reversing bar 4 of the inner passage 10 being arranged in cylindrical body 6, and the commutation of reversing bar 4 makes inner passage 10 switch between open mode and closed condition.
Reversing bar 4 is configured by and commutates with the collision of the first reversing arrangement 3 or the second reversing arrangement 1.When paraffin cleaner 2 and the first reversing arrangement 3 collide (Fig. 1), reversing bar 4 moves down (Fig. 2) relative to cylindrical body 6, cause reversing bar 4 to disconnect with the abutment 9 of cylindrical body 6 inwall, therefore the inner passage 10 of through hole 7, through hole 8 and cylindrical body 6 together form the path for fluid circulation.When paraffin cleaner 2 and the second reversing arrangement 1 collide (Fig. 1), reversing bar 4 moves (Fig. 2) relative in cylindrical body 6, cause reversing bar 4 stuck with the abutment 9 of the inwall of cylindrical body 6, the flow path that therefore inner passage 10 of through hole 7, through hole 8 and cylindrical body 6 is formed jointly is disconnected.In this way, paraffin cleaner 2 moves to the second reversing arrangement 1 place by gravity from the first reversing arrangement 3, and moves to the first reversing arrangement 3 place by the fluid impact of flowing well from the second reversing arrangement 1.
First reversing arrangement 3 such as can be arranged in well head.Second reversing arrangement 1 can be installed on down-hole wax deposition point to shaft bottom any tubing coupling position.So, when paraffin cleaner 2 moves to the second reversing arrangement 1 place from the first reversing arrangement 3, inner passage 10 is opened, and when paraffin cleaner moves to the first reversing arrangement 3 place from the second reversing arrangement 1, inner passage 10 blocks.
First reversing arrangement 3 can comprise the first buffer spring and the catcher for paraffin cleaner 2.When needs reclaim or overhaul paraffin removal device for oil pipe 2, by catcher, paraffin cleaner 2 can be caught taking-up at the first reversing arrangement 3 place.Second reversing arrangement 1 can comprise the second buffer spring and screens device, and screens device such as can be configured to the specific location the second reversing arrangement 1 being fixed to flowing well.
First buffer spring or the second buffer spring are configured to: when paraffin cleaner 2 and the first reversing arrangement 3 or the second reversing arrangement 1 collide, the kinetic energy of paraffin cleaner 2 is correspondingly converted to elastic potential energy and discharges by described first buffer spring or described second buffer spring, makes described paraffin cleaner change the direction of motion.In this way, the first buffer spring or the second buffer spring play the effect of buffering, slow down collision impact when paraffin cleaner 2 rises to well head or falls after rise, extend the application life of whole paraffin removal unit, also reduce the probability of happening of down-hole accident simultaneously.
During wax removal, first make paraffin removal device for oil pipe reversing bar 4 open the inner passage 10 of paraffin cleaner 2, paraffin cleaner 2 falls after rise by deadweight; When reaching the position of the second reversing arrangement 1, collide with it, reversing bar 4 cuts out paraffin cleaner inner passage 10, makes paraffin cleaner 2 up by bottom working fluid (gas) energy, wipes wax off time up by the paraffin cutting tile 5 being close to tube inner wall with pipe friction; When reaching well head (i.e. the first reversing arrangement 3 place), the reversing bar 4 of paraffin cleaner 2 collides with the first reversing arrangement 3 being positioned at well head, and the inner passage 10 of paraffin cleaner 2 opened by reversing bar 4.In this way, repeat the process of descending falling and up wax removal, realize automatic wax removal.When needs reclaim or check paraffin removal device for oil pipe 2, by the catcher in manual operation first reversing arrangement 3, can take out when paraffin removal device for oil pipe 2 reaches well head and reclaim or check.
Effectively can utilize the fluid dynamic energy of gravity and flowing well according to paraffin removal unit of the present invention, when almost inputting without external energy, up and falling repeatedly, carries out wax removal work simultaneously.Arrange, use very flexibly, can not man-hour be delayed, also can not increase the burden of labor management.Split type structure make change, clean very convenient; The design of spring makes the impact force of paraffin cleaner be cushioned, and extends the application life of equipment.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristic mentioned in each embodiment all can combine in any way.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (10)
1. for the paraffin removal unit of flowing well, it is characterized in that, described paraffin removal unit comprises:
Be arranged in the first reversing arrangement of the first position in flowing well;
Be arranged in the second reversing arrangement of the second position in flowing well;
Have the paraffin cleaner of paraffin cutting tile, described paraffin cleaner is arranged between described primary importance and the described second place,
Wherein, described paraffin cleaner is constructed to be permeable to move between the first position and the second position, and when it collides described first reversing arrangement or described second reversing arrangement, the direction of motion change into original side in the opposite direction.
2. paraffin removal unit according to claim 1, it is characterized in that, described paraffin cleaner comprises cylindrical body and is positioned at the paraffin cutting tile on outside described cylindrical body, and described paraffin cutting tile is switched by tile spring and acting between expansion state and rounding state of fluid.
3. paraffin removal unit according to claim 2, is characterized in that, the maximum gauge of described paraffin cutting tile under expansion state is 61mm, and the maximum gauge under rounding state is 56mm.
4. the paraffin removal unit according to any one of Claim 1-3, it is characterized in that, described paraffin cleaner also comprises the reversing bar of the inner passage being arranged in described cylindrical body, and the commutation of described reversing bar makes described inner passage switch between open mode and closed condition.
5. paraffin removal unit according to claim 4, is characterized in that, described reversing bar is configured by and commutates with described first reversing arrangement or with the collision of described second reversing arrangement.
6. paraffin removal unit according to claim 5, is characterized in that, described first reversing arrangement comprises the first buffer spring and the catcher for described paraffin cleaner.
7. paraffin removal unit according to claim 6, it is characterized in that, described first reversing arrangement is arranged in well head, when described paraffin cleaner moves to the described second place from described primary importance, described inner passage is opened, when described paraffin cleaner moves to described primary importance from the described second place, described inner passage cuts off.
8. paraffin removal unit according to claim 6, is characterized in that, described second reversing arrangement comprises the second buffer spring and screens device, and described screens device is configured to the specific location described second reversing arrangement being fixed to flowing well.
9. paraffin removal unit according to claim 8, it is characterized in that, described first buffer spring or described second buffer spring are configured to: when described paraffin cleaner and described first reversing arrangement or described second reversing arrangement collide, the kinetic energy of described paraffin cleaner is correspondingly converted to elastic potential energy and discharges by described first buffer spring or described second buffer spring, makes described paraffin cleaner change the direction of motion.
10. paraffin removal unit according to claim 7, is characterized in that, described paraffin cleaner moves to the described second place by gravity from described primary importance, and moves to described primary importance by the fluid impact of flowing well from the described second place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262115.8A CN105317402B (en) | 2014-06-12 | 2014-06-12 | Paraffin removal unit for flowing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262115.8A CN105317402B (en) | 2014-06-12 | 2014-06-12 | Paraffin removal unit for flowing well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105317402A true CN105317402A (en) | 2016-02-10 |
| CN105317402B CN105317402B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410262115.8A Active CN105317402B (en) | 2014-06-12 | 2014-06-12 | Paraffin removal unit for flowing well |
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| Country | Link |
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| CN (1) | CN105317402B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104770A (en) * | 2018-01-19 | 2018-06-01 | 西南石油大学 | A kind of new wax removal apparatus for eliminating sludge suitable for oil flow production well |
| CN109138921A (en) * | 2018-10-31 | 2019-01-04 | 延安奇源石油工程技术服务有限公司 | A kind of flowing well automatic scraper |
| CN116927722A (en) * | 2023-08-05 | 2023-10-24 | 东北石油大学 | Oil pipe paraffin removal and descaling method and assembly and device for implementing same |
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| US3395759A (en) * | 1966-09-09 | 1968-08-06 | Mobil Oil Corp | Well tool pumpable through a flowline |
| US4287948A (en) * | 1979-03-30 | 1981-09-08 | Haggard I. D. Wiper, Inc. | Tubular member interior wiper |
| CN88212806U (en) * | 1988-04-02 | 1988-12-07 | 四川石油管理局钻采工艺研究所 | Trunk piston for oil well desintering wax |
| CN1065119A (en) * | 1992-01-07 | 1992-10-07 | 吉林省油田管理局 | Rotary wax wiper |
| CN2206836Y (en) * | 1994-05-17 | 1995-09-06 | 王传贤 | Self-propelled flexibility wax cleaner for oil pipe |
| CN2767657Y (en) * | 2005-01-24 | 2006-03-29 | 晁建伟 | Automatic wax removal apparatus for pumping rod |
| CN202900057U (en) * | 2012-08-23 | 2013-04-24 | 中国石油天然气股份有限公司 | Tubing string for paraffin removal from oil well |
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2014
- 2014-06-12 CN CN201410262115.8A patent/CN105317402B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3395759A (en) * | 1966-09-09 | 1968-08-06 | Mobil Oil Corp | Well tool pumpable through a flowline |
| US4287948A (en) * | 1979-03-30 | 1981-09-08 | Haggard I. D. Wiper, Inc. | Tubular member interior wiper |
| CN88212806U (en) * | 1988-04-02 | 1988-12-07 | 四川石油管理局钻采工艺研究所 | Trunk piston for oil well desintering wax |
| CN1065119A (en) * | 1992-01-07 | 1992-10-07 | 吉林省油田管理局 | Rotary wax wiper |
| CN2206836Y (en) * | 1994-05-17 | 1995-09-06 | 王传贤 | Self-propelled flexibility wax cleaner for oil pipe |
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| CN202900057U (en) * | 2012-08-23 | 2013-04-24 | 中国石油天然气股份有限公司 | Tubing string for paraffin removal from oil well |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104770A (en) * | 2018-01-19 | 2018-06-01 | 西南石油大学 | A kind of new wax removal apparatus for eliminating sludge suitable for oil flow production well |
| CN109138921A (en) * | 2018-10-31 | 2019-01-04 | 延安奇源石油工程技术服务有限公司 | A kind of flowing well automatic scraper |
| CN116927722A (en) * | 2023-08-05 | 2023-10-24 | 东北石油大学 | Oil pipe paraffin removal and descaling method and assembly and device for implementing same |
| CN116927722B (en) * | 2023-08-05 | 2024-05-10 | 东北石油大学 | Oil pipe paraffin removal and descaling method and assembly and device for implementing same |
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| Publication number | Publication date |
|---|---|
| CN105317402B (en) | 2018-08-17 |
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