CN2448912Y - Composite cylinder type screen cloth structure for drilling mud - Google Patents
Composite cylinder type screen cloth structure for drilling mud Download PDFInfo
- Publication number
- CN2448912Y CN2448912Y CN 00223456 CN00223456U CN2448912Y CN 2448912 Y CN2448912 Y CN 2448912Y CN 00223456 CN00223456 CN 00223456 CN 00223456 U CN00223456 U CN 00223456U CN 2448912 Y CN2448912 Y CN 2448912Y
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- screen cloth
- screen
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- utility
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Abstract
The utility model relates to a composite barrel type screen cloth structure for drilling liquid. The utility model comprises one or a plurality of barrel type screen clothes, a supporting rack, a transmission mechanism, a quick-unload joint, a shunting conduit, etc. The utility model is characterized in that the barrel type screen cloth can be a single layer or multiple layers, each layer of the screen clothes can be a plain net, a wave-shaped net, a trapezoid net or a tapered net, and the mesh number of the screen cloth can be changed layer of layer from an inner layer to an outer layer. The whole structure of the screen cloth is arranged on a straining box of a vibration screen. The barrel type screen cloth is driven by a motor through the transmission mechanism to rotate around an axis of the screen cloth. The drilling fluid in the barrel type screen cloth can vibrate following the vibration screen and can rotate following the barrel type screen cloth. The utility model has the advantages of high sieving efficiency and good sieving effect, and therefore, the utility model is suitable for well drilling vibration screens with various vibration modes.
Description
The utility model relates to the mesh structure of the shale shaker that uses in oil, natural gas and the exploitation of other mineral resources exploration.
At present, employed shale shaker in the exploration and development drillng operation of mineral resources such as domestic and international petroleum and natural gas, it is one of key equipment in the drilling well working solution purifier, its primary structure is: on base, connect a screen box by resiliency supported, vibrator and screen cloth are installed on the screen box.Under the drive of motor, the eccentric massblock on the vibrator rotates and produces exciting force, thereby makes screen box by certain vibration shape vibration.The vibration shape of shale shaker has forms such as circle, straight line, balanced elliptic.With the screen cloth form of screen box synchronous vibration plane, the wave plane of boss are slightly arranged, common this plane screen cloth is to glue the lamination net that stacks by one deck screen cloth that plays sieving actoion and passive another layer screen cloth.The shortcoming of plane screen cloth is: (1) causes drilling fluid " to run slurry " easily; (2) easily pile up solid phase foreign material such as landwaste on the screen cloth face, cause " screen blinding " and " sticking screen ", and the self-cleaning ability of netting is not strong; (3) the screen cloth wearing and tearing are uneven, are subject to machinery or artificial the damage, reduced screen life-span, and the operation of replacing screen cloth is complicated, has increased drilling cost; (4) since plane net when drilling fluid sieve, its drilling fluid is aggregate motions such as throwing, slip, screening efficiency is subjected between the lamination stratum reticulare hindering and sieves the influence of factor such as effective area minimizing.
The purpose of this utility model is, provides a kind of drilling fluid compound roller screen structure, and it is installed on and replaces existing screen cloth on the existing shale shaker screen box, to increase the screening effective area, improve screening efficiency, improve screening effect, prolong screen cloth application life, thereby reduce drilling cost.
For achieving the above object, the utility model is by the following technical solutions: on the screen box of existing vibrosieve, a compound roller screen structure is installed, this structure comprises one or several roller screens, bracing frame, transmission mechanism, quick-release coupling, shunt catheter etc., be primarily characterized in that, roller screen can be a single or multiple lift, each layer screen cloth can be plain net, waveform net, trapezoidal net or taper net etc., the order number of screen cloth by internal layer to skin successively variable (i.e. order number from the inner to the outer can different).
Roller screen is connected to by quick-release coupling on the bearing support of the drilling fluid shunt catheter that is positioned on the screen box, drives roller screen by motor by transmission mechanism and rotates by certain angular velocity around its axis.Drilling fluid in the roller screen both with the plane vibration shape vibration of screen box, rotated with roller screen again.The drilling fluid that returns from well head, the inner layer net that at first enters roller screen through shunt catheter by the liquid case be again to outer layer net, and the landwaste after the Separation of Solid and Liquid is got rid of from the port of export that the outlet of ectonexine arrives screen box respectively.The exit angle of roller screen can require to regulate according to screening.
Advantage of the present utility model is: the screening effective area of (1) roller screen is big than the plane screen cloth, and the drilling fluid in the roller screen rotates with roller screen again both with the plane vibration shape vibration of screen box, thereby the solid-liquid separation efficiency height; (2) roller screen can adopt single or multiple lift (its number of plies can require to decide according to screening), and the order number of screen cloth is successively variable to skin by internal layer, thereby screening effect is good; (3) exit angle of roller screen can be regulated, and the roller screen of making according to the different meshes screen cloth can obtain the screening effect of the partition size that requires.
Description of drawings is as follows:
Fig. 1 is the schematic diagram that the utility model is installed on the front view on the existing vibrosieve;
Fig. 2 is the schematic diagram that the utility model is installed on the vertical view on the existing vibrosieve;
Fig. 3 is the schematic diagram that the utility model is installed on the right view on the existing vibrosieve;
Fig. 4 is the different net form schematic diagrames of the roller screen of one of embodiment.
Below in conjunction with description of drawings embodiment of the present utility model:
Drilling fluid vibrating sieve mainly is made up of base (13), support spring (12), vibrator (5), screen box (8) etc., screen box (8) is connected with base (13) by support spring (12), vibrator (5) is installed on the screen box (8), a compound roller screen structure also is installed on screen box (8), and this structure comprises one or several roller screens (6), bracing frame (7), transmission mechanism (9) quick-release coupling (3), shunt catheter (2) etc.Roller screen (6) can adopt single or multiple lift as required, figure (4) is the schematic diagram of different net forms when two-layer for adopting, internal layer among the figure (6-1) is a plain net, and outer (6-2) is waveform net (all can adopt taper net or trapezoidal net as requested), and the order number of ectonexine net can be different.Screen cloth (6-1), (6-2) coat and are fixed on the bracing frame (7) of squirrel-cage, bracing frame (7) left end is stuck in the quick-release coupling (3) with Spring Card, quick-release coupling (3) and be positioned between the drilling fluid shunt catheter (2) on the screen box (8) bearing (4) is arranged, the outer race of bearing (4) cooperates with the endoporus of quick-release coupling (3), inside race cooperates with the cylindrical of shunt catheter (2), and transmission mechanism (9) adopts the worm and gear transmission.The right-hand member of roller screen (6) is equipped with that an annulus cooperates with the worm gear endoporus and is fixing; worm and gear is with a protection tube that is installed on the screen box (8) outward; with the corresponding position of worm gear the ball dish is installed in the protection tube, the step of worm gear end cooperates with ball dish endoporus.The power of motor (11) is delivered to transmission mechanism (9) by flexible rotating shaft (10), rotates by a fixed angular speed around its axis thereby drive roller screen (6).During work, the screen box of vibrosieve (8) is the vibration of plane ellipse (or circle or straight line) vibration shape under the exciting force effect of vibrator (5), and the drilling fluid in the roller screen (6) both with screen box (8) vibration, rotated with roller screen (6) again.The drilling fluid that returns from well head flows into shunt catheter (2) by liquid case (1), enters the inner layer net of roller screen (6), and the mud after the inner layer net screening successively sieves to outer layer net again, to reach desired partition size.Landwaste after the Separation of Solid and Liquid arrives the port of export eliminating of screen box respectively from the outlet of inside and outside layer.The exit angle of roller screen (6) can require to regulate according to screening.
Claims (1)
1. compound roller screen structure of drilling fluid, comprise one or several roller screens (6), bracing frame (7), transmission mechanism (9), quick-release coupling (3), shunt catheter (2), whole mesh structure is installed on the existing vibrosieve screen box (8), it is characterized in that: roller screen (6) can be the single or multiple lift net, each layer screen cloth can be plain net, the waveform net, trapezoidal net, the taper net, the order number of screen cloth is successively variable to skin by internal layer, roller screen (6) is fixed on the squirrel-cage bracing frame (7), bracing frame (7) left end is stuck in the quick-release coupling (3) with Spring Card, quick-release coupling (3) and be positioned between the drilling fluid shunt catheter (2) on the screen box (8) bearing (4) is arranged, the outer race of bearing (4) cooperates with the endoporus of quick-release coupling (3), inside race cooperates with the cylindrical of shunt catheter (2), transmission mechanism (9) adopts the worm and gear transmission, and roller screen (6) right-hand member is equipped with an annulus and links with the worm gear that is loaded on the transmission mechanism (9) on the screen box (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00223456 CN2448912Y (en) | 2000-06-22 | 2000-06-22 | Composite cylinder type screen cloth structure for drilling mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00223456 CN2448912Y (en) | 2000-06-22 | 2000-06-22 | Composite cylinder type screen cloth structure for drilling mud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2448912Y true CN2448912Y (en) | 2001-09-19 |
Family
ID=33587999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00223456 Expired - Fee Related CN2448912Y (en) | 2000-06-22 | 2000-06-22 | Composite cylinder type screen cloth structure for drilling mud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2448912Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612608A (en) * | 2015-01-30 | 2015-05-13 | 张劲南 | Novel mud solid control system and technology |
-
2000
- 2000-06-22 CN CN 00223456 patent/CN2448912Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612608A (en) * | 2015-01-30 | 2015-05-13 | 张劲南 | Novel mud solid control system and technology |
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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 |