GB2469670A - Frangible ceramic rotating seal. - Google Patents
Frangible ceramic rotating seal. Download PDFInfo
- Publication number
- GB2469670A GB2469670A GB0906948A GB0906948A GB2469670A GB 2469670 A GB2469670 A GB 2469670A GB 0906948 A GB0906948 A GB 0906948A GB 0906948 A GB0906948 A GB 0906948A GB 2469670 A GB2469670 A GB 2469670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ceramic
- constructing
- seal
- mechanical rotating
- rotating seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 15
- 238000005461 lubrication Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 3
- 239000011148 porous material Substances 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 239000003566 sealing material Substances 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/003—Bearing, sealing, lubricating details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sliding-Contact Bearings (AREA)
- Mechanical Sealing (AREA)
Abstract
Drillable drilling motor seal with a ceramic wafer layer 3 which is pre weakened enabling it to be mechanically destroyed and removed from a borehole. The frangible seal has a thin ceramic layer 3 bonded to a substructure 1. Stressed lines of weakness 4 can assist the destruction of the seal. The ceramic layer can have a pore structure or perforations 5 to create a reservoir for a lubrication fluid. The stress lines and perforations can be made by laser.
Description
Title: Thin Layer Ceramic Mechanical Rotating Seal.
Application: Rotating Mechanical Seal General: One example of the application is set out in the following paragraph.
In the process of drilling weilbores for the extraction of hydrocarbons and geothennal energy one method of achieving this is utilising hydraulic drilling motors where there are a variety of machines constructed for this purpose. Typically these machines are positive displacement, turbine, vane and electric motors in addition there is the recent development of rotary stearable systems, all of these systems require both radial and axial thrust bearing.
The technology of preparing thrust and radial bearings from elastomers, ball thrust bearings, Polycrystalline (PCD) or polymer thrust bearings are reasonably well developed.
In the development of sealed bearing systems there is a challenge in developing mechanical rotating seals which will run at a relatively high speed i.e. 300 -1500 rpm or greater typically, elastomeric & polymeric sealing systems have been developed but are limited by downhole temperature, pressure and system running speed, mechanical rotating seal products exist but are considered not to be through drillable due to the robustness of the design.
It would be well understood by those skilled in the art of mechanical engineering that this dynamically rotational mechanical sealing application can be equally applied to other rotating systems which require sealing of a lubrication medium from a deleterious external environment.
In the development of a drillable motor system as described in our Patent number CT/GB/2007/002874 Running Bore-lining Tubulars' in the name of "Futuretec-Ltd" there is presented an engineering challenge to provide a high speed sealing system for a sealed bearing pack which can be drilled through using standard existing rotary drill PDC bits.
All existing drilling Motors are furnished with Radial & Thrust Bearing systems which due to the nature of their construction are considered to be non-drillable but which may incorporate a lubrication fluid sealed system which will also have elements which cannot be drilled through.
The following description sets out a patent proposal for a fully through drillable mechanical rotating seal.
Claims (9)
- Claims: 1) A method of constructing a thin wafer ceramic mechanical rotating seal which has the facility to be mechanically broken up and destroyed for the purpose of flushing i.e. circulating out' from a well bore if required.
- 2) A method of constructing a ceramic mechanical rotating sealing structure which is bonded to a mechanically resilient supporting sub-structure.
- 3) A method of constructing a rotating mechanical seal where the ceramic component of the assembly has had laser beam energy technology applied to the surface of the structure where this application sets up small but geometrically constant discrete areas of lines of stressed weakness to assist in the process of fracture by drill through of the bearing system.
- 4) A method of constructing a ceramic sealing material which has bad laser beam energy application to generate a micro-pore structure at the sliding surface of the bearing contact face. This micropore structure creating a reservoir of lubrication fluid to aid the lubrication between sliding surfaces.
- 5) A method of bonding by metalising a surface of the Ceramic to be bonded to a supporting substructure sufficient to resist shear forces.
- 6) A method of constructing a ceramic mechanical rotating sealing assembly by bonding chemically with industrial adhesive a wafer of ceramic to a substructure of a different material.
- 7) A method of constructing a ceramic mechanical rotating seal which may be a plain thrust seal or of a conical or other regular geometric shape.
- 8) A mechanical rotating seal assembly constructed from different materials, these being Ceramics e.g. Silicon Carbide and softer than ceramici.e.metals or other materials.
- 9) A ceramic mechanical rotating seal assembly where the bearing surface being finished lapped / polished has a typical coefficient of friction approaching 0,1 or 0,05 or better.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0906948A GB2469670A (en) | 2009-04-23 | 2009-04-23 | Frangible ceramic rotating seal. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0906948A GB2469670A (en) | 2009-04-23 | 2009-04-23 | Frangible ceramic rotating seal. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0906948D0 GB0906948D0 (en) | 2009-06-03 |
| GB2469670A true GB2469670A (en) | 2010-10-27 |
Family
ID=40774814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0906948A Withdrawn GB2469670A (en) | 2009-04-23 | 2009-04-23 | Frangible ceramic rotating seal. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2469670A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1373145A (en) * | 1971-07-06 | 1974-11-06 | Crane Packing Co | Sealing washer for mechanical seals |
| US5188182A (en) * | 1990-07-13 | 1993-02-23 | Otis Engineering Corporation | System containing expendible isolation valve with frangible sealing member, seat arrangement and method for use |
| US20090159281A1 (en) * | 2006-07-29 | 2009-06-25 | Herrera Derek F | Running bore-lining tubulars |
-
2009
- 2009-04-23 GB GB0906948A patent/GB2469670A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1373145A (en) * | 1971-07-06 | 1974-11-06 | Crane Packing Co | Sealing washer for mechanical seals |
| US5188182A (en) * | 1990-07-13 | 1993-02-23 | Otis Engineering Corporation | System containing expendible isolation valve with frangible sealing member, seat arrangement and method for use |
| US20090159281A1 (en) * | 2006-07-29 | 2009-06-25 | Herrera Derek F | Running bore-lining tubulars |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0906948D0 (en) | 2009-06-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20110203 AND 20110209 |
|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |