CN202381034U - Low pressure loss type rigid cyclone centralizer - Google Patents
Low pressure loss type rigid cyclone centralizer Download PDFInfo
- Publication number
- CN202381034U CN202381034U CN2011205512883U CN201120551288U CN202381034U CN 202381034 U CN202381034 U CN 202381034U CN 2011205512883 U CN2011205512883 U CN 2011205512883U CN 201120551288 U CN201120551288 U CN 201120551288U CN 202381034 U CN202381034 U CN 202381034U
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- pressure loss
- sleeve
- flow guide
- fluid
- centralizer
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Abstract
The utility model relates to the technical field of cyclone centralizers and discloses a low pressure loss type rigid cyclone centralizer. The low pressure loss type rigid cyclone centralizer comprises a sleeve, wherein three to eight spiral diversion strips are circumferentially distributed on the sleeve; a diversion groove is formed between adjacent diversion strips; and a spirally ascending angle of each diversion groove gradually changes from 0 degree to 45 degrees from bottom to top. The low pressure loss type rigid cyclone centralizer is reasonable and compact in structure and convenient to use; when entering the diversion grooves, fluid changes continuously and gradually from 0 degree to 45 degrees along with the spirally ascending angle of each diversion groove, so that the fluid gradually changes from axial linear flowing to rotating flowing which spirally ascends around the sleeve and forms an angle of 45 degrees with an axial direction; the retention fluid involvement range of the fluid on an annular region close to the well wall is increased, meanwhile the turbulence of the fluid in a borehole during flow direction change is avoided, and the pressure loss of the fluid in the diversion grooves is reduced.
Description
Technical field
the utility model relates to eddy flow centralizer technical field, is a kind of low-pressure loss-type rigidity eddy flow centralizer.
Background technology
In
oil gas well completion operation; When the setting of casing cementing well; How replace the drilling mud of annular space between the clean well middle sleeve and the borehole wall with cement paste; Be the dreamboat that cementing technology is pursued, also be the basic guarantee that improves bore hole annulus cement sheath sealing quality always; At present, be used to improve the method that cement paste replaces mud efficient, mainly contain two kinds; A kind ofly be; Rheological property through adjustment cement paste and mud; Between cement paste and mud, increase flushing liquor, the construction parameter when optimizing well cementing operation simultaneously is to satisfy cement paste better replaces mud in down-hole annular fluidised form requirement; Reach and improve the purpose that cement paste replaces mud efficient, and then realize improving the target of cementing quality; Adopt this method, mud and cement paste flow down-hole annular, all are that fluid is not good for the involving property of retentate fluid in nearly borehole wall area in the annular space along the axial streamlined flow from bottom to top of well; Another kind is a plurality of rigidity eddy flow centralizers to be installed, to reach the purpose that improves cement paste replacement mud efficient on the down-hole casing post; Adopt this method; Fluid through rigidity eddy flow centralizer eddy flow guiding elasticity righting strip; Type rise to flow in the shape of a spiral, and fluid increases for the involving property of retentate fluid in nearly borehole wall area in the annular space, but as eddy flow lead the shaped design of elasticity righting strip when not good; To cause fluid excessive, the use of restriction eddy flow centralizer quantity in the pressure consumption at eddy flow centralizer place.
Summary of the invention
the utility model provides a kind of low-pressure loss-type rigidity eddy flow centralizer; Overcome the deficiency of above-mentioned prior art, it can effectively solve mud and the cement paste fluid does not consume excessive problem for the involving property of retentate fluid in nearly borehole wall area in the annular space is good with the pressure that causes fluid at eddy flow centralizer place.
The technical scheme of
the utility model realizes through following measure: a kind of low-pressure loss-type rigidity eddy flow centralizer comprises sleeve; Circle distribution has three to eight spiral flow guide bars on sleeve, forms guiding gutter between the adjacent flow guide bar, guiding gutter revolve lift angle gradual change from bottom to top from 0 ° to 45 °.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
On
above-mentioned flow guide bar the erection device that sleeve is set upright can be installed.
above-mentioned erection device can comprise elasticity righting strip, guide pad and compression spring; Top and bottom at the elasticity righting strip are fixedly connected with guide pad respectively; The unsteady groove identical with the guiding gutter direction of rotation arranged on flow guide bar, and the elasticity righting strip is sleeved in the groove that floats; The cavity of installation is arranged respectively in the inboard, upper and lower of flow guide bar and communicate with unsteady groove; Guide pad is installed in respectively to be installed in the cavity; In the upper and lower of elasticity righting strip the inside mounting groove of opening is arranged respectively, between the inner of each mounting groove and unsteady groove, be installed with the compression spring.
The locating hole of level can be arranged respectively at the bottom of the elasticity righting strip in
above-mentioned unsteady groove outside, in locating hole, is installed with alignment pin and contacts with flow guide bar.
The outside, the top and bottom of
above-mentioned flow guide bar and elasticity righting strip can be respectively outer little in big taper; The outside of flow guide bar and elasticity righting strip is streamlined respectively.
Screwed hole can be arranged respectively at each guiding gutter bottom of
above-mentioned sleeve.
but on the above-mentioned sleeve circle distribution four flow guide bars are arranged, and form four guiding gutters.
the utility model reasonable and compact in structure, easy to use; When fluid gets into guiding gutter, with guiding gutter revolve lift angle from 0 ° to 45 ° continuous gradation, fluid crossfaded into by axial streamlined flow and axially become 45 ° rotation mobile around the telescoping screw rising; Increased retentate fluid the involving property of fluid, avoided the disorder of fluid when flowing to change in the well simultaneously, reduced the pressure consumption of fluid in guiding gutter for nearly borehole wall area in the annular space.
Description of drawings
accompanying drawing 1 is the main TV structure sketch map of the utility model most preferred embodiment.
accompanying drawing 2 is accompanying drawing 1 a plan structure sketch map.
accompanying drawing 3 is the deployed configuration sketch map of accompanying drawing 1.
accompanying drawing 4 is that the A-A of accompanying drawing 3 is to the sectional structure sketch map.
accompanying drawing 5 is that the B-B of accompanying drawing 3 is to the sectional structure sketch map.
accompanying drawing 6 is that the C-C of accompanying drawing 3 is to the sectional structure sketch map.
Coding in
accompanying drawing is respectively: 1 is sleeve, and 2 is guiding gutter, and 3 is flow guide bar, and 4 is the elasticity righting strip, and 5 is guide pad, and 6 are the compression spring, and 7 is alignment pin, and 8 is screwed hole, and 9 are the groove that floats.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description 1, as: the position relation of upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, this low-pressure loss-type rigidity eddy flow centralizer comprises sleeve 1; Circle distribution has three to eight spiral flow guide bars 3 on sleeve 1, forms guiding gutter 2 between the adjacent flow guide bar 3, guiding gutter 2 revolve lift angle gradual change from bottom to top from 0 ° to 45 °.Guiding gutter 2 revolves lift angle by 0 degree beginning, rotates gradual change to 45 degree then continuously; Like this, can accomplish the replacement of cement paste efficiently to mud in the bore hole annulus; Realize simultaneously by along the streamlined flow of borehole axis to the steady change of flowing around the rotation of borehole axis, simultaneously, make the pressure depletion of fluid in guiding gutter 2 little.
Can according to actual needs above-mentioned low-pressure loss-type rigidity eddy flow centralizer be done further to optimize or/and improve:
are equipped with the erection device that sleeve 1 is set upright on flow guide bar 3 shown in accompanying drawing 1.Through erection device, when flow guide bar 3 is installed, can play radially spacing effect, can prevent that the utility model from tilting, and influences fluid and in guiding gutter 2, circulate simultaneously.
like accompanying drawing 3,4,5, shown in 6, erection device comprises elasticity righting strip 4, guide pad 5 and compression spring 6; Top and bottom at elasticity righting strip 4 are fixedly connected with guide pad 5 respectively; The unsteady groove 9 identical with guiding gutter 2 direction of rotation arranged on flow guide bar 3, and elasticity righting strip 4 is sleeved in the groove 9 that floats; The cavity of installation is arranged respectively in the inboard, upper and lower of flow guide bar 3 and communicate with unsteady groove 9; Guide pad 5 is installed in respectively to be installed in the cavity; In the upper and lower of elasticity righting strip 4 the inside mounting groove of opening is arranged respectively, between the inner of each mounting groove and unsteady groove, be installed with compression spring 6.Through 6 compressions of compression spring, can make elasticity righting strip 4 radial contraction, thereby be applicable to the down-hole casing post of different inner diameters, highly versatile.
Shown in accompanying drawing 6, the locating hole of level is arranged respectively at the bottom of the elasticity righting strip 4 in the groove outside of floating
, in locating hole, is installed with alignment pin 7 and contacts with flow guide bar 3.Like this, can carry out radial location, under obsolete situation, be convenient to settle elasticity righting strip 4.
shown in accompanying drawing 1, the outside, top and bottom of flow guide bar 3 and elasticity righting strip 4 be respectively outer little in big taper; The outside of flow guide bar 3 and elasticity righting strip 4 is streamlined respectively.Like this, can be convenient to fluid gets in the guiding gutter 2.
have screwed hole 8 respectively in each guiding gutter 2 bottom of sleeve 1 shown in accompanying drawing 2.Like this, can the utility model be fixed and install and use through set bolt.
shown in accompanying drawing 2, circle distribution has four flow guide bars 3 on sleeve 1, and forms four guiding gutters 2.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
Claims (10)
1. a low-pressure loss-type rigidity eddy flow centralizer is characterized in that comprising sleeve; Circle distribution has three to eight spiral flow guide bars on sleeve, forms guiding gutter between the adjacent flow guide bar, guiding gutter revolve lift angle gradual change from bottom to top from 0 ° to 45 °.
2. low-pressure loss-type rigidity eddy flow centralizer according to claim 1 is characterized in that being equipped with on the flow guide bar erection device that sleeve is set upright.
3. low-pressure loss-type rigidity eddy flow centralizer according to claim 2 is characterized in that erection device comprises elasticity righting strip, guide pad and compression spring; Top and bottom at the elasticity righting strip are fixedly connected with guide pad respectively; The unsteady groove identical with the guiding gutter direction of rotation arranged on flow guide bar, and the elasticity righting strip is sleeved in the groove that floats; The cavity of installation is arranged respectively in the inboard, upper and lower of flow guide bar and communicate with unsteady groove; Guide pad is installed in respectively to be installed in the cavity; In the upper and lower of elasticity righting strip the inside mounting groove of opening is arranged respectively, between the inner of each mounting groove and unsteady groove, be installed with the compression spring.
4. low-pressure loss-type rigidity eddy flow centralizer according to claim 3, the locating hole of level is arranged respectively at the bottom of the elasticity righting strip in the groove outside that it is characterized in that floating, and in locating hole, is installed with alignment pin and contacts with flow guide bar.
5. according to claim 3 or 4 described low-pressure loss-type rigidity eddy flow centralizers, the outside, top and bottom that it is characterized in that flow guide bar and elasticity righting strip be respectively outer little in big taper; The outside of flow guide bar and elasticity righting strip is streamlined respectively.
6. according to claim 1 or 2 or 3 or 4 described low-pressure loss-type rigidity eddy flow centralizers, it is characterized in that screwed hole is arranged respectively at each guiding gutter bottom of sleeve.
7. low-pressure loss-type rigidity eddy flow centralizer according to claim 5 is characterized in that screwed hole is arranged respectively at each guiding gutter bottom of sleeve.
8. according to claim 1 or 2 or 3 or 4 described low-pressure loss-type rigidity eddy flow centralizers, it is characterized in that the last circle distribution of sleeve (1) has four flow guide bars, and form four guiding gutters.
9. low-pressure loss-type rigidity eddy flow centralizer according to claim 5 is characterized in that the last circle distribution of sleeve (1) has four flow guide bars, and forms four guiding gutters.
10. low-pressure loss-type rigidity eddy flow centralizer according to claim 7 is characterized in that circle distribution has four flow guide bars on the sleeve, and forms four guiding gutters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205512883U CN202381034U (en) | 2011-12-26 | 2011-12-26 | Low pressure loss type rigid cyclone centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205512883U CN202381034U (en) | 2011-12-26 | 2011-12-26 | Low pressure loss type rigid cyclone centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381034U true CN202381034U (en) | 2012-08-15 |
Family
ID=46629547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205512883U Expired - Lifetime CN202381034U (en) | 2011-12-26 | 2011-12-26 | Low pressure loss type rigid cyclone centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381034U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806863A (en) * | 2014-01-29 | 2014-05-21 | 中国石油集团西部钻探工程有限公司 | Hydraulic oscillation centering device |
-
2011
- 2011-12-26 CN CN2011205512883U patent/CN202381034U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806863A (en) * | 2014-01-29 | 2014-05-21 | 中国石油集团西部钻探工程有限公司 | Hydraulic oscillation centering device |
| CN103806863B (en) * | 2014-01-29 | 2016-06-22 | 中国石油集团西部钻探工程有限公司 | Fluid power concussion centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |