CN201297136Y - Well oil pressure type reducing stabilizer - Google Patents
Well oil pressure type reducing stabilizer Download PDFInfo
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- CN201297136Y CN201297136Y CNU200820226375XU CN200820226375U CN201297136Y CN 201297136 Y CN201297136 Y CN 201297136Y CN U200820226375X U CNU200820226375X U CN U200820226375XU CN 200820226375 U CN200820226375 U CN 200820226375U CN 201297136 Y CN201297136 Y CN 201297136Y
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- mandrel
- housing
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Abstract
This utility model is a well oil pressure type reducing stabilizer, belonging to the well underground tool, wherein a plurality of diameter-changed piston buses is uniformly distributed in a plurality of radial holes of three spiral wing sides of a shell. A mandrel is mounted in the chamber of the shell; a lower supporter is mounted at the lower part of the chamber of the shell having a large diameter section and is sleeved at the mandrel; the outer surfaced of the upper end part of the mandrel and the inner surface of the lower supporter are respectively equipped with a sealing element. A resetting spring is mounted on the mandrel; hydraulic oils are filled in an annular cavity between the mandrel and the inner wall of the shell. The upper part of the shell chamber is equipped with a fixing snap ring. The utility model has advantages as follows: the diameter-changed piston is changed to the internally mounted type; the whole shape is compact without bonding the filter cake; the area of the cuttings chute is large; the drill chip can be easily discharged; the card sticking, the bending, the transverse vibration, the resistance, the clamping and so on of the drilling tool can be prevented; the total length is short and the taken space is small; the diameter-changed piston is changed to automatically extend by using the oil pressing mode. This utility model has reliable working, convenient maintenance and long service life. The manufacturing cost thereof is lower than that of the remote control diameter-changed stabilize. This utility model can be used for drilling the straight well, the directional well and the horizontal well.
Description
(1) technical field
The utility model relates to creeping into of soil layer or rock, belongs to the specific process or the equipment of drilling well, especially bores the anti-deviation device of directional well, TRAJECTORY CONTROL OF HORIZONTAL WELL and drilling straight-hole, particularly is a kind of drilling well oil hydraulic type tapered stabilizer.
(2) background technology
In drilling process, glue card, bending, oscillation crosswise, the anti-oblique and Controlling Borehole Trajectory of straight well in order to prevent drilling tool, and will use stabilizer.This type of stabilizer is divided into non-reducing and reducing two big classes, and tapered stabilizer is divided into two types of remote control reducing and non-remote control reducings again.Non-tapered stabilizer causes down-hole accident often, and following brill is hampered, pulls out of hole and meets card and " pulling out piston " phenomenon, even serious accident such as cause that thus well slough, blowout, well are scrapped, and causes enormous economic loss.Therefore non-tapered stabilizer will be eliminated gradually.The remote control tapered stabilizer at present external usefulness mainly contain two kinds, a kind of is the TRACKS that has down-hole micro computer closed-loop control, another kind is the AGS of hydraulic controlling type.The remote control tapered stabilizer of domestic usefulness mainly contains " ball-throwing type remote control tapered stabilizer " (96213796.0) and " drilling well remote control tapered stabilizer " (200520125286.2) at present.The former is pitching control, throws three balls at every turn, can only throw three times, and use is restricted.The latter is by the control of switch slush pump, though reached the technical level of external AGS, it is also fine to produce effect, and structure is complicated, and length is oversize, and manufacturing cost is higher, and maintenance is also difficult.Therefore, non-remote control tapered stabilizer remains the main product of primary study and application, can be divided into two types.A kind of drilling tool external and internal pressure difference of leaning on is stretched out for example " fluid power Reducing screw stabilizer " (95212933.7); Another kind is controlled by the pressure of the drill and is stretched out for example " the pressure of the drill control tapered stabilizer " (03233732.9).These non-remote control tapered stabilizer structures are all reasonable inadequately, and flexible piece mostly is an external, uses the king-bolt fixed limit, the surface is the foundry loam cake easily, the chip area area is too little, and pump pressure raises when causing creeping into, and is perhaps oversize because of length, influence the reasonable disposition of lower drilling tool structure, perhaps make inclinometer too far away, influence the deviational survey effect from drill bit, and the ubiquity poor reliability, problems such as application life is short all are unfavorable for the large-scale popularization application.
(3) summary of the invention
In view of the shortcoming and defect part that above-mentioned prior art exists, the purpose of this utility model just is autonomous innovation, develops and provide a kind of distinguished drilling well oil hydraulic type tapered stabilizer.Make it simple and reasonable, overcome the shortcoming of existing non-remote control tapered stabilizer, improve China's drilling technology level and economic benefit.
Above-mentioned purpose is realized by following technical proposals:
Drilling well oil hydraulic type tapered stabilizer comprises housing, reducing piston assembly, mandrel assembly and return assembly.It is characterized in that several reducing piston assemblies, in the uniform some radial holes that are contained in three spiral aerofoils of housing.The mandrel assembly is made up of mandrel, lower support and seal, and mandrel is contained in the inner chamber of housing, and lower support is contained in the bottom of housing inner chamber enlarged diameter section and is sleeved on the mandrel, and the inner surface of mandrel upper-end outer surface and lower support is adorned seal respectively.The return assembly is made up of the hydraulic oil in return spring and the inner chamber, and return spring is contained on the mandrel, and hydraulic oil is full of the toroidal cavity between mandrel and the inner walls.Housing inner chamber top dress is snap ring fixedly.
The housing of above-mentioned drilling well oil hydraulic type tapered stabilizer is a cylindrical shape.There are three spiral aerofoils and three alternate helical flutes in its external surface stage casing, uniform five radial piston holes on every aerofoil.Its intracavity diameter size is divided two sections, and the internal diameter on middle part and top is greater than the internal diameter of bottom.Radially oil filler point is arranged in its chip area.There is internal thread its upper end, and there is external screw thread the bottom.
The reducing piston assembly of above-mentioned drilling well oil hydraulic type tapered stabilizer is made up of piston block, sealing ring and end opotism.Piston block is a cylindrical shape, its outer face cure process, and its inner face is the end opotism of circular arc, and end opotism and piston block become one, and sealing ring is contained in the external surface of piston block.
The mandrel of above-mentioned drilling well oil hydraulic type tapered stabilizer is a round tube shape.There is the thick head of individual major diameter its upper end, and the external diameter of thick head matches with the intracavity diameter of housing, and the external surface of thick head has seal groove.
Major advantage of the present utility model is: the reducing piston assembly is built-in, and monnolithic case is succinct, is difficult for the foundry loam cake; The chip area area is big, and the aerofoil two ends are chamfer, and easily the gang drill bits prevent bit freezing; Total length is short, and it is few to take up space; Internal construction is simple, especially adopts the oil pressure mode to make the reducing piston independently flexible, reliable operation, and easy to maintenance, application life is longer, and manufacturing cost is significantly less than the remote control tapered stabilizer.Have outstanding technological innovation value and remarkable economic efficiency.
(4) description of drawings
Accompanying drawing 1 is the novel overall structure cross-sectional schematic of this reality.
Accompanying drawing 2 is its profile schematic diagrames.
Accompanying drawing 3 is amplification schematic perspective views of its reducing piston assembly 5.
(5) specific embodiment
Embodiment of accompanying drawings:
In the accompanying drawing 1, the 1st, housing, the 2nd, fixing snap ring, the 3rd, mandrel, the 4th, return spring, the 5th, reducing piston assembly, the 6th, oil filler point plug, the 7th, lower support.A is a hydraulic fluid chamber.
In the accompanying drawing 2, the 1st, housing, the 5th, reducing piston assembly, the 8th, spiral aerofoil, 9 chip areas.
In the accompanying drawing 3, the 5.1st, reducing piston block, the 5.2nd, seal, the 5.3rd, end opotism.
By shown in Figure 1, drilling well oil hydraulic type remote control reducing machine comprises housing 1, reducing piston assembly 5, mandrel assembly and return assembly.It is characterized in that in the uniform some radial holes that are contained in 1 three spiral aerofoils 8 of housing of several (15 of present embodiments) reducing piston assemblies 5.The mandrel assembly is made up of mandrel 3, lower support 7 and seal.Mandrel 3 is contained in the inner chamber of housing 1, and lower support 7 is contained in the bottom of housing inner chamber enlarged diameter section and is sleeved on the mandrel 3, and the inner surface of mandrel 3 upper-end outer surface and lower support 7 is adorned seal respectively.The return assembly is made up of the hydraulic oil among return spring 4 and the inner chamber A.Return spring 4 is contained on the mandrel 3, and hydraulic oil is full of the toroidal cavity A between mandrel 3 and housing 1 inwall.The top dress of housing 1 inner chamber is snap ring 2 fixedly.
By shown in Figure 2, housing 1 is a cylindrical shape.There are three spiral aerofoils 8 and three alternate helical flutes 9 in its external surface stage casing, uniform five radial piston holes on every aerofoil 8.By shown in Figure 1, housing 1 intracavity diameter size is divided two sections, and the internal diameter on middle part and top is greater than the internal diameter of bottom.There is internal thread its upper end, and there is external screw thread its bottom.
By shown in Figure 3, reducing piston assembly 5 is made up of piston block 5.1, seal 5.2 and end opotism 5.3.Piston block 5.1 is a cylindrical shape, its outer face cure process, and its inner face is the end opotism 5.3 of circular arc, and end opotism 5.3 becomes one with piston block 5.1, and seal 5.2 is contained in the external surface of piston block 5.1.
By shown in Figure 1, mandrel 3 is a round tube shape.There is the thick head of individual major diameter its upper end, and the external diameter of thick head matches with the intracavity diameter of housing 1, and the external surface of thick head has seal groove.
The dynamic duty principle of this stabilizer: it is connected in the drill string bottom position.By shown in Figure 1, when slush pump termination of pumping state (as rise, going down process), the drill string external and internal pressure equates that reducing piston assembly 5 is not stretched out, its outer face flushes with the aerofoil 8 of housing 1.This moment, this stabilizer was in the minor diameter state, can effectively prevent slacking off, pull out of hole and meet card or " pulling out piston " phenomenon takes place.When slush pump turn on pump normal circulation, because the pressure drop of bit port (if the drilling fluid motor is arranged, adding the pressure drop of motor) makes the interior pressure of drill string be higher than the pressure of the outer annular space of stabilizer.Under the effect of this external and internal pressure difference, promote mandrel 3 downward compression retracteding position springs 4, hydraulic fluid chamber A volume is reduced, oil pressure increases, and forces reducing piston assembly 5 to be stretched out, and reaches " meeting the eye on every side state ".This moment, this stabilizer was in the major diameter state, brought into play its radially stable, centralizing function, prevented that drilling tool from gluing card, bending, oscillation crosswise, be hampered, meet card, pulling out piston etc.This shows that this tapered stabilizer need not other manual operation and controls, entirely by independently finishing " turn on pump becomes big footpath, and termination of pumping diminishes directly ".
This tapered stabilizer both can use single, also can connect simultaneously to use two or three.Can be used for drilling straight-hole, directional well or horizontal well.Has good popularization and application prospect.
Claims (4)
1. drilling well oil hydraulic type tapered stabilizer, comprise housing (1), reducing piston assembly (5), mandrel assembly and return assembly, it is characterized in that in the uniform some radial holes that are contained in (1) three spiral aerofoil of housing (8) of several reducing piston assemblies (5), the mandrel assembly is by mandrel (3), lower support (7) and seal are formed, mandrel (3) is contained in the inner chamber of housing (1), lower support (7) is contained in the bottom of housing (1) inner chamber enlarged diameter section and is sleeved on the mandrel (3), the inner surface of mandrel (3) upper-end outer surface and lower support (7) is adorned seal respectively, the return assembly is made up of the hydraulic oil in return spring (4) and the inner chamber (A), return spring (4) is contained on the mandrel (3), hydraulic oil is full of the toroidal cavity (A) between mandrel (3) and housing (1) inwall, and the top dress of housing (1) inner chamber is snap ring (2) fixedly.
2. drilling well oil hydraulic type tapered stabilizer according to claim 1, it is characterized in that housing (1) is a cylindrical shape, there are three spiral aerofoils (8) and alternate three helical flutes (9) in its external surface stage casing, every aerofoil (8) is gone up uniform five radial piston holes, its intracavity diameter size is divided into two sections, the internal diameter on middle part and top is greater than the internal diameter of bottom, and there is internal thread its upper end, and there is external screw thread its bottom.
3. drilling well oil hydraulic type tapered stabilizer according to claim 1, it is characterized in that reducing piston assembly (5) is made up of piston block (5.1), seal (5.2) and end opotism (5.3), piston block (5.1) is a cylindrical shape, its outer face cure process, its inner face is the end opotism (5.3) of former arc, end opotism (5.3) becomes one with piston block (5.1), and seal (5.2) is contained in the external surface of piston block (5.1).
4. drilling well oil hydraulic type tapered stabilizer according to claim 1 is characterized in that mandrel (3) is a round tube shape, and there is the thick head of individual major diameter its upper end, and the external diameter of thick head matches with the intracavity diameter of housing (1), and the external surface of thick head has seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820226375XU CN201297136Y (en) | 2008-11-21 | 2008-11-21 | Well oil pressure type reducing stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820226375XU CN201297136Y (en) | 2008-11-21 | 2008-11-21 | Well oil pressure type reducing stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297136Y true CN201297136Y (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820226375XU Expired - Fee Related CN201297136Y (en) | 2008-11-21 | 2008-11-21 | Well oil pressure type reducing stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297136Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011049581A1 (en) * | 2009-10-23 | 2011-04-28 | Halliburton Energy Services Inc | Downhole tool with stabilizer and reamer and related methods |
| CN103015892A (en) * | 2012-12-27 | 2013-04-03 | 王岳 | Variable-diameter stabilizer and variable-diameter stabilizer system |
| CN113107391A (en) * | 2021-05-06 | 2021-07-13 | 长江大学 | Drilling downhole reducing centralizing stabilizer |
-
2008
- 2008-11-21 CN CNU200820226375XU patent/CN201297136Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011049581A1 (en) * | 2009-10-23 | 2011-04-28 | Halliburton Energy Services Inc | Downhole tool with stabilizer and reamer and related methods |
| CN103015892A (en) * | 2012-12-27 | 2013-04-03 | 王岳 | Variable-diameter stabilizer and variable-diameter stabilizer system |
| CN103015892B (en) * | 2012-12-27 | 2015-10-14 | 王岳 | Tapered stabilizer and system thereof |
| CN113107391A (en) * | 2021-05-06 | 2021-07-13 | 长江大学 | Drilling downhole reducing centralizing stabilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20171121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |