CN2152902Y - Sand removal centrifuger for purifying drilling fluid - Google Patents
Sand removal centrifuger for purifying drilling fluid Download PDFInfo
- Publication number
- CN2152902Y CN2152902Y CN 92244868 CN92244868U CN2152902Y CN 2152902 Y CN2152902 Y CN 2152902Y CN 92244868 CN92244868 CN 92244868 CN 92244868 U CN92244868 U CN 92244868U CN 2152902 Y CN2152902 Y CN 2152902Y
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- cylinder
- drilling fluid
- utility
- centrifuge
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Abstract
The utility model relates to a sand removal centrifuge for purifying drilling fluid, which is in an intermediate speed and has a large discharge capacity. The utility model is suitable for the removal of the solid phase which is 10 to 74 micrometers in the non weighted drilling fluid of non-dispersed system. The rectification requirement of non weighted drilling fluid of non-dispersed system can be met, and the technological requirements of special drilling wells (directional wells, horizontal wells) can be met. The utility model is composed of a cylinder, a screw conveyor, a cylinder, etc. An internal sleeve whose shape is the same with the cylinder is added in a centrifugal cylinder, a cylinder-shaped sleeve is added on the root of the blades of the screw conveyor, the blades are integrated with the sleeve, a synchronous belt drive mode is adopted by a power transmission device, and the transmission of a satellite differential device can be replaced.
Description
The utility model relates to a kind of petroleum drilling fluid and purifies with middling speed, big discharge capacity, desanding centrifuge.Be suitable for removing the fine solid phase of not disperseing in the non-weighted drilling fluid of drilling fluid system 10～74 microns.
Since 1964, development abroad high speed drilling fluid clarifying centrifuge, rotating speed be 1600～3200 change per minutes, treating capacity be 10～30 cubic metres per hour, that solid phase is separated mid point (D50) is lower, is generally less than 10 microns.Treating capacity only is equivalent to about 10% of circulation of drilling fluid amount, thereby the solid phase of larger particles can not in time be removed in circulation and causes the broken refinement of repetition, makes drill fluid purification work difficulty more.Its treatment media of these supercentrifuges is the scattered drilling liquid system, and treating capacity is less, and the solid phase of cleaning is based on the fine solid phase less than 10 microns; On structure design, be feature with rotary drum, helical conveyor, satellite differential, complex structure, manufacturing cost height; On cleaning equipment is equipped with, be flow process with vibrosieve～spiral-flow type desanding, desilter～supercentrifuge; Its maintenance cost height is because the maintenance cost of centrifuge is directly proportional with the rotating speed cube.The centrifuge of China's introduction at present, mapping, imitated, improved drilling well liquefaction usefulness all belongs to this type.
At the initial stage eighties, China has progressively promoted the non-dispersed system drilling fluid, at 3500 meters with interior shallow well particularly horizontal well, directional well, all require drilling fluid that certain suspending power and gel strength are arranged, require the no longer refinement of solid phase about 40 μ m, so that guarantee wellbore stability and be convenient to that the solid phase landwaste is carried into ground to be removed, in addition, through water source, the Yellow River soil, dimension mill calcium soil, peace Qiu calcium soil etc. are carried out particle size analysis, its most frequently granularity be 10～30 microns.In such cases, do not disperse in the drilling fluid system, solid particle size less than 10 microns only account for about 10% of solid concentration, if again to handle the drilling fluid of handling non-dispersed system based on the supercentrifuge of thin solid phase, the then incompatibility of Xianing.
The purpose of this utility model is exactly, require technological requirement with special drilling well (directional well, horizontal well) in order to satisfy the purification do not disperse the drilling fluid system drilling fluid, overcome purification requirement, complex structure, manufacturing cost height that existing drill fluid purification do not disperse the drilling fluid system drilling fluid with centrifuge because of above-mentioned reason can not satisfy, keep in repair defectives such as inconvenience, maintenance cost height.Architectural feature of the present utility model is: in centrifugal basket ［ 7 ］, increased by one identical with the cylinder shape anticorrosion, wear-resisting in cover ［ 8 ］, in the cover ［ 8 ］ but direct pouring on cylinder ［ 7 ］ inwall, after also can being shaped interior cover ［ 8 ］ earlier, be sleeved on again on cylinder ［ 7 ］ inwall; The root of auger blade ［ 9 ］ has increased a cylindrical shape cover ［ 10 ］, blade ［ 9 ］ and cover ［ 10 ］ are connected as a single entity, add man-hour, blade ［ 9 ］ and cover ［ 10 ］ can be at the last global formations of cylindrical shell ［ 11,12 ］, also can be sleeved on again on the cylindrical shell ［ 11,12 ］ behind blade ［ 9 ］ and cover ［ 10 ］ segmentation or the global formation; Adopting synchronously at motivation transfer motion part, band replaces satellite differential, motor ［ 1 ］ is by joint group synchronous pulley ［ 2 ］, drive centrifugal basket ［ 7 ］ by synchronous band ［ 4 ］ and synchronous pulley ［ 6 ］, drive helical conveyor by synchronous band ［ 3 ］ and synchronous pulley ［ 5 ］.Performance characteristic of the present utility model is: medium speed (1000～1600 change per minute), high throughput (50～200 cubic metres per hour), based in the treated drilling fluid than coarse granule (10～70 microns) solid phase, the utility model will be to the drilling fluid cleaning system change, promptly cancel eddy flow desanding and desilter, be vibrosieve-middling speed desanding centrifuge-supercentrifuge.
Figure of description
Figure one: the structural representation of utility model centrifuge.
Description of drawings: 1. motor 2. joint group synchronous pulleys 3,4. synchronously the band
5,6. overlap in synchronous pulley 7. cylinders 8. cylinders
9. overlap 11,12. cylindrical shells in the blade 10.
Now the utility model will be further described in conjunction with Figure of description:
Behind the actuating motor, band ［ 3 ］, ［ 4 ］ drive the cylinder and the augur of centrifuge respectively synchronously, after reaching working speed, with pump drilling fluid to be clean is sent into the centrifuge inlet pipe, enter slurry intake chamber after slurry-feeding hole enters cylinder, rotate under the action of centrifugal force that produces at cylinder, the solid phase of larger particles is thrown toward cylinder wall and deposits near inner wall of rotary drum in the drilling fluid, by helical conveyor the solid phase that is deposited on the inner wall of rotary drum is scraped and push to the cylinder small end, discharge from slag-drip opening.Liquid phase after the separation and a part of fine solid phase are discharged through overfall.
Enforcement of the present utility model with changing the flow process of solidification control system for well drilling liguid, attains a new height solid controlling system.
Claims (2)
1, a kind of drill fluid purification is made up of cylinder [7], helical conveyor cylindrical shell [11,12] etc. with middling speed, big discharge capacity, desanding centrifuge; It is characterized in that in centrifugal basket [7], increasing an interior cover [8] identical with the cylinder shape; The root of auger blade [9] has increased a cylindrical shape cover [10], and blade [9] and cover [10] are connected as a single entity; Adopt band transmission synchronously at motivation transfer motion part.
2, centrifuge according to claim 1 is characterized in that running part is to pass through joint group synchronous pulley ［ 2 ］ by motor ［ 1 ］, and band ［ 4 ］ and synchronous pulley ［ 6 ］ drive centrifugal basket synchronously; Drive the centrifuge helical conveyor by synchronous band ［ 3 ］ and synchronous pulley ［ 5 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244868 CN2152902Y (en) | 1992-12-12 | 1992-12-12 | Sand removal centrifuger for purifying drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244868 CN2152902Y (en) | 1992-12-12 | 1992-12-12 | Sand removal centrifuger for purifying drilling fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2152902Y true CN2152902Y (en) | 1994-01-12 |
Family
ID=33784013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92244868 Expired - Fee Related CN2152902Y (en) | 1992-12-12 | 1992-12-12 | Sand removal centrifuger for purifying drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2152902Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716604A (en) * | 2012-07-10 | 2012-10-10 | 望安辉 | High-efficiency spiral-flow type sand remover for oil field wellhead |
| CN103101724A (en) * | 2012-11-13 | 2013-05-15 | 无锡市洪成造纸机械有限公司 | Different conveyor structure with synchronous belt |
| CN111980606A (en) * | 2020-08-24 | 2020-11-24 | 大庆市翔泰石油机械设备制造有限公司 | Method for recycling drilling fluid |
-
1992
- 1992-12-12 CN CN 92244868 patent/CN2152902Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716604A (en) * | 2012-07-10 | 2012-10-10 | 望安辉 | High-efficiency spiral-flow type sand remover for oil field wellhead |
| CN102716604B (en) * | 2012-07-10 | 2014-07-16 | 望安辉 | High-efficiency spiral-flow type sand remover for oil field wellhead |
| CN103101724A (en) * | 2012-11-13 | 2013-05-15 | 无锡市洪成造纸机械有限公司 | Different conveyor structure with synchronous belt |
| CN111980606A (en) * | 2020-08-24 | 2020-11-24 | 大庆市翔泰石油机械设备制造有限公司 | Method for recycling drilling fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |