CN1038269C - Wax removing bullet for oil well - Google Patents
Wax removing bullet for oil well Download PDFInfo
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- CN1038269C CN1038269C CN93102600A CN93102600A CN1038269C CN 1038269 C CN1038269 C CN 1038269C CN 93102600 A CN93102600 A CN 93102600A CN 93102600 A CN93102600 A CN 93102600A CN 1038269 C CN1038269 C CN 1038269C
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- bullet
- shell case
- wax
- connector
- well
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Abstract
The present invention relates to a wax removal bullet for an oil well. The present invention is composed of a bullet head, a bullet body and a bullet tail. The present invention solves the problems of the existing wax removal method of incapability of thorough removal of deep well wax precipitation and wax precipitation with high content and high solidifying point. The present invention is characterized in that large amount of heat produced by the combustion of powder arranged in the bullet is transferred to an oil and water medium arranged in a well tube through a metal shell in order that the oil and water medium is gasified and cracked, subsequently, large amount of gas with high temperature and high pressure is produced and is used for melting and flushing the accumulated wax arranged on the inner wall of a casing tube, and a high pressure region used for exhausting wax liquid out of a well head is formed. The present invention opens up a novel path for Chinese wax removal from the oil well.
Description
The invention belongs to oil well paraffin removal device, is a kind of wax removal bullet that is used for the down-hole, oil field, and this bullet is made up of shell case, gunpowder, delay powder, ignition charge etc.
Oil well paraffinication is one of key factor that influences oil well production, also is the anxious important topic to be solved in domestic and international oil field development oil recovery aspect, at present, a large amount of and broad research and application of oil field both at home and abroad remain mechanical paraffin removal and the heating power wax that disappears.Mechanical paraffin removal is the most frequently used dewaxing method, adopts figure of eight paraffin scraper more, the perverse drill bit wax removal of spiral bit or lance, but time-consuming taking a lot of work, and also will technology such as wash by means of heat just can have obvious effects, and the heating power wax removal is by well-flushings such as deep fat, hot water, steam.Circulation and Hot Oil Spray or convert electrical energy into the wax deposition of heat energy fusing tube wall and underground equipment and surface line with electric heater.The cost height is removed not exclusively, and especially to deep-well wax deposition and high-load high-solidification point waxing in production well, the wax removal effect is poorer.
The objective of the invention is to overcome disadvantages of background technology, design that a kind of wax removal is complete, technology is simple, the time is short, cost is low, the wax removal bullet of dried deep-well wax deposition preferably and high-load high-solidification point waxing in production well.
Design of the present invention, in order to realize above-mentioned purpose, adopt all impossible quick, the complete wax removal of common thermal power transfer wax removal, imagination produces a large amount of heats with a kind of powder burning bullet, can make the interior oil-water media of oil well in short time gasification, cracking, form high temperature, high pressure gas area, melt, wash away the long-pending wax of tube wall, and make wax water mixed liquid ejection well head.But be to use common powder burning duration weak point, oil-water media gasification, cracking time weak point, be not enough to produce the HTHP gas area in the down-hole.Design a kind of gunpowder that contains compositions such as high heating value metal powder, oxidant and can realize this imagination, for the wax liquid of discharging thawing designs drainage mechanism at projectile tail.
The present invention is made up of bullet, bomb body, projectile tail.
Bullet (16-21) is made up of gripper shoe (16), igniter pad (17), ignition lead (18), timing ignition device (19), locating ring (20), shell case (21).Gripper shoe is made by pvc material, and duct and concave surface are left in its center, puts igniter pad (17) on the concave surface, logical ignition lead (18) in the duct, and shell case (21) is by 45
#Steel is made, and leaves blind hole in it and lays timing ignition device (19), and the timing ignition device is fixing by locating ring (20).
Bomb body (7-15) is by main charge (7,14), shell case (8,13), choked flow baffle ring (9,12), delayer (10), and delay powder (11), connector (15) are formed.
Main charge (7,14) is made up of magnesium powder, potassium nitrate and dibatyl phithalate, and it is than being 5: 4: 1.
Shell case (8,13) is by 45
#Steel is made.
Delay powder (11) is by ammonium nitrate, and carboxy-terminated polybutadiene, aluminium powder, epoxy resin, curing compound, thinner constitute.
Projectile tail (1-6) is made up of connector (1), outage (2), safety valve (3-6).
Safety valve (3-6) is in order to prevent that powder burning produces too high pressure in the bullet, to guarantee safety, pressing part (6) by stack (3), bleeder screw (4), steel ball (5), company and constitute.
Manufacturing of the present invention: bullet, bomb body, projectile tail are all by 45
#Steel is made.The bullet shell is processed into external diameter 90mm, internal diameter 67mm, and long 160mm, the cone that tapering is 60 °, bomb body shell external diameter is 90mm, and internal diameter is 80mm, the long 900mm that is, shell case two ends processing negative and positive screw thread.Projectile tail is processed into external diameter 90mm, long 240mm.The timing ignition device is housed in the bullet, two electrodes is arranged on the timing ignition device, on connect two ignition leads and be connected with igniter pad, igniter pad places in the connector center brace panel.In the bomb body shell case main charge is housed, connects by delayer between two bomb bodys, the delay medicine is housed in the delayer, every wax removal bullet is made up of 1-5 bomb bodys, connects bullet, projectile tail again and just constitutes a complete wax removal bullet.
The shell case of main charge of the present invention (8,13) external surface can be processed into vertical rectangular channel, to enlarge area of dissipation.
Safety valve of the present invention can be made by relief hole (25), relief hole and press spiral shell (23), burst disk (24) to constitute, and relief hole presses spiral shell to be pressed on the burst disk.
Advantage of the present invention:
1, wax removal completely, polluted reservoir does not stay any residue in the oil well.
2, technology is simple, and it is short to account for the well time, can realize that the wax removal de-waxing once finishes.
3, cost is low, does not employ main equipment.
Description of drawings of the present invention is as follows:
Accompanying drawing 1 is the sectional drawing of Wax removing bullet for oil well:
1-connector, 2-outage, 3-stack, 4-bleeder screw, 5-steel ball, 6-connector, 7.14-main charge, 8.13.21-shell case, 9.12-choked flow baffle ring, 10-delayer, 11-delay powder, 15-connector, 16-gripper shoe, 17-igniter pad, 18-ignition lead, 19-timing ignition device, 20-locating ring.
Accompanying drawing 2 is shell case (8,13) the profile elevations in the accompanying drawing 1:
22-rectangular channel.
Accompanying drawing 3 is safety valve sectional drawings in the accompanying drawing 1:
23-relief hole is pressed spiral shell, 24-burst disk, 25-relief hole.
Embodiment
1, implements according to accompanying drawing 1;
1.1 the manufacturing of housing
1.2 delay powder manufacturing
Take by weighing ammonium nitrate 201 grams, carboxy-terminated polybutadiene 57 grams, aluminium powder 15.0 grams, epoxy resin 6.0 grams, curing compound 6.0 grams, thinner 15.0 grams, in kneader, mixed 4 hours under 60 ℃ of temperature condition, put into the vacuum tank mould after evenly to be cast into external diameter 30mm, the solid cylinder of long 140mm.
1.3 the manufacturing of main charge
Take by weighing magnesium powder 50 grams, potassium nitrate 40 grams, benzene dipotassium dibutyl phthalate 10 grams evenly mix in mixer.
1.4 installation of the present invention
Igniter 19 when setting in the shell case 21, the timing ignition device is fixed by locating ring 20 and is linked to each other by ignition lead 18 with igniter pad 17, igniter pad is placed on the gripper shoe 16, connector 15 two ends have negative thread to connect shell case 21 and shell case 13 respectively, gripper shoe 16 is fixed in the middle of the connector 15, dress main charge 14 in the shell case 13, dress delay powder 11 in the delayer 10, the one end is threaded with shell case 8 again, shell case 11 connector 6 that is threaded, connector 6 is connected with the connector 1 that has outage 2 again.All workpieces install and constitute a complete wax removal bullet, adopt 3 of bomb bodys to regulate timing according to above step according to the oil well situation during use, the on-the-spot installation.
1.5 result of use
Yumen Oilfield G20
#Well, long-pending for many years wax reaches 169 meters in the sleeve pipe, and is not good through multiple dewaxing method treatment effect, handle the long-pending disposable eliminating well head of wax in back with this kind wax removal bullet, confirm through little hole diameter test: interior all the long-pending wax complete liquidations of well are clean, and it is intact that body takes out the back, no any residue in the oil well.This wax removal bullet is complete from the de-waxing of lighting a fire, and all mechanism has been used 40 minutes altogether.
2, manufacturing of the present invention and installation are implemented according to embodiment 1, and with reference to accompanying drawing 2, different is that main charge shell case appearance is made the rectangle groove face.Process is at Yumen Oilfield D186
#The actual use of well, effect and embodiment 1 are basic identical, and different is to shorten to 35 minutes from the complete mechanism of the de-waxing of lighting a fire.
3, with reference to embodiment 1 and accompanying drawing 3, different is, and safety valve adopts relief hole, burst disk, relief hole to press spiral shell to constitute, burst disk diameter 26mm, and thick 1.0mm, relief hole is pressed the long 18mm of spiral shell, by the fixing burst disk of screw thread.Through the oil well experiment, test result and embodiment 1 are basic identical, and body is intact in the same old way.
Claims (3)
1, a kind of Wax removing bullet for oil well, it is by bullet, bomb body, projectile tail is formed, igniter is housed in shell case, ignition charge and main charge, it is characterized in that in the shell case (21) in the bullet timing ignition device (19) being housed, the timing ignition device is fixed by locating ring (20) and is linked to each other by ignition lead (18) with igniter pad (17), igniter pad is placed on the gripper shoe (16), connector (15) two ends have negative thread to connect shell case (13) one ends in shell case (21) and the bomb body respectively, gripper shoe is fixed in the middle of the connector (15), dress contains the main charge (14) of magnesium powder in the shell case (13), its other end is connected with delayer (10), delay powder (11) is housed in the delayer, shell case in its other end and the bomb body (8) is threaded, the delay powder two ends are fixing by choked flow baffle ring (9) and choked flow baffle ring (12), dress contains the main charge (7) of magnesium powder in the shell case (8), its other end and safety valve are threaded, steel ball (5) in the connector in the safety valve (6) is fixing by bleeder screw (4), fixing stack (3) on the bleeder screw, connector (6) one ends and connector (1) are threaded, and outage (2) is arranged on the connector (1).
2, according to the wax removal bullet of claim 1, the external surface that it is characterized in that shell case (8) and shell case (13) is vertical rectangle groove face (22).
3, according to the wax removal bullet of claim 1, it is characterized in that safety valve presses spiral shell (23) to constitute by relief hole (25), burst disk (24), relief hole, relief hole presses spiral shell to be pressed on the burst disk on the relief hole by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93102600A CN1038269C (en) | 1993-03-15 | 1993-03-15 | Wax removing bullet for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93102600A CN1038269C (en) | 1993-03-15 | 1993-03-15 | Wax removing bullet for oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092501A CN1092501A (en) | 1994-09-21 |
| CN1038269C true CN1038269C (en) | 1998-05-06 |
Family
ID=4984182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93102600A Expired - Fee Related CN1038269C (en) | 1993-03-15 | 1993-03-15 | Wax removing bullet for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038269C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443197C (en) * | 2001-09-13 | 2008-12-17 | 刘勇 | Automatic intellectual delermining and controlling method and apparatus for dewaxing procedure |
| CN102337878B (en) * | 2011-10-16 | 2014-10-01 | 北方斯伦贝谢油田技术（西安）有限公司 | Thermal-ignition high-energy gas pulse fracturing device |
| CN104087279B (en) * | 2014-07-23 | 2016-08-24 | 中国石油大学(华东) | Self-heating chemistry temperature raising medicament and using method for acid thick oil reservoir |
| CN109723419A (en) * | 2017-10-28 | 2019-05-07 | 刘向京 | A kind of multi-functional rocket-powered stratum transformation device |
| CN111550213B (en) * | 2020-05-12 | 2022-05-17 | 大庆华翰邦石油装备制造有限公司 | Pore passage expanding device and method for scaling of ternary composite oil displacement well |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4976318A (en) * | 1989-12-01 | 1990-12-11 | Mohaupt Henry H | Technique and apparatus for stimulating long intervals |
-
1993
- 1993-03-15 CN CN93102600A patent/CN1038269C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4976318A (en) * | 1989-12-01 | 1990-12-11 | Mohaupt Henry H | Technique and apparatus for stimulating long intervals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1092501A (en) | 1994-09-21 |
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