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Topic: Centralizer


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In the News (Sun 22 Oct 17)

  
  Werner Beiter | Dauchingen | Deutschland | News
Alle 4 Schützinnen schießen Beiter Scope und Beiter Centralizer, sowie Beiter Nocken.
Der Beiter Centralizer Hood ist ab sofort in allen Farben lieferbar, auch in den brandneuen "Graphit", "Lime" und "Rosé".
Der Beiter Centralizer ist ab sofort in zwei weiteren Farbvarianten lieferbar: "Rosé" und "Lime".
www.wernerbeiter.com /de/news/news.php   (0 words)

  
  High angle and horizontal wellbore centralizer and method of use - Patent 5358042
The centralizers include spherical rollers which extend radially outwardly from the tubing string a distance substantially equal to the distance from the tubing string to the wellbore casing.
The centralizer may be mounted on the tubing string by sliding it onto a tubing string section and then anchoring it against sliding movement in either direction by means of stop rings 18 attached to the tubing string by lock screws 20.
Centralizers 10 are positioned on the tubing string downstream and upstream from the packers and flow regulators to prevent the tubing string from sagging down and causing the packers and flow regulators to slide along the casing.
www.freepatentsonline.com /5358042.html   (2194 words)

  
  Centralizer and normalizer - Wikipedia, the free encyclopedia
In group theory, the centralizer and normalizer of a subset S of a group G are subgroups of G which have a restricted action on the elements of S and S as a whole, respectively.
Then the centralizer of S in G is defined as C(S) = {x in G : for all s in S, xs = sx}.
If G is an abelian group, then the centralizer or normalizer of any subset of G is all of G; in particular, a group is abelian if and only if Z(G) = G.
en.wikipedia.org /wiki/Centralizer_and_normalizer   (586 words)

  
 Bone Cement: Stem centralizer
A stem centralizer will guide the femoral prosthesis to a neutral position within the cement and guarantee an even cement layer between the bone and prosthesis.
The distal cement centralizer is widely used and is assumed to be valuable in affecting the quality of cemented total hip replacement.
This study evaluated stem position, centralization and distal cement mantle in two groups where the distal cement mantle was or was not used.
www.bonecement.com /index.php?id=17026&no_cache=1&PHPSESSID=13360022093777ac08a91b40449ea7a1   (173 words)

  
 Intramedullary centralizer (US5658351)
A centralizer for the stem of a cementable prosthetic orthopedic implant that is implanted into the medullary canal of a bone has a hollow annular body with a tapered interior surface for receiving a tapered stem of the implant.
The centralizer has four fins spaced around the exterior surface of its annular body with the fins extending radially outwardly in a direction generally perpendicular to the longitudinal axis extending along the stem in a proximal-distal direction.
The annular body of the centralizer has a proximal and a distal end surface spaced a predetermined distance apart with the fins having a base adjacent the body extending over a substantial portion of the predetermined distance.
www.delphion.com /details?pn10=US05658351   (304 words)

  
 Centralizers   (Site not responding. Last check: )
Industrial Rubber's Rotating Centralizer has been designed for meeting the requirements for centralizers that are utilized with a rotating liner in highly deviated conditions.
These special centralizers are used in conditions that require high restoring for optimum standoff, also allowing free rotation of the pipe for maximum displacement efficiency.
The Rotating Centralizer is designed for a slow movement of force to minimize the drag in the hole.
www.iri-oiltool.com /centr.html   (319 words)

  
 Center, Centralizer, Normalizer   (Site not responding. Last check: )
The centralizer of a subgroup is the set of elements that commute with everything in the subgroup.
Verify that the centralizer of H is a group.
This simplifies to 1/b times H. The center is the centralizer of the entire group.
www.mathreference.com /grp,cen.html   (234 words)

  
 Downhole Products Releases Latest In Centralizer Technology For Extreme Wells   (Site not responding. Last check: )
The Blade Runner is a first-of-its-kind solid centralizer that is designed to significantly reduce drag and torque while running casing, liners and tubing for today's extreme wells.
The zinc alloy Spir-o-lizer, best known for its rugged construction and ability to stay on the pipe while under extreme conditions such as window systems in multi-lateral wells, gave an outstanding performance during the record-breaking 11-kilometre drilling operation carried out at Wytch Farm on BP's ultra ERD well in 1996.
I am confident that it will soon become the centralizer of choice when running casing, lining and tubing for extreme wells, including long horizontal step-out wells," he added.
www.nickles.com /ntm/extra.asp?article=NTM2004_NM0000.html   (582 words)

  
 Safety Alert   (Site not responding. Last check: )
The old centralizer plate was designed to press an "O" ring down on a shoulder inside the centralizer housing to create a seal.
PHQ has changed the design of the centralizer plate to improve the seal between the centralizer plate and the centralizer housing.
Now the "O" ring is pressed between the inside of the centralizer housing and the side of the plate to provide a seal.
www.partshq.com /ac_centralizer_new_design.htm   (331 words)

  
 Asia Times: Russians fall for centralizer's magnetism
Just seven weeks after his inauguration, Putin's preference for centralization has been demonstrated in three areas: the media, the vodka industry, and policy toward the regions.
And because such centralization promises order, if not law, it is popular with Russian citizens who are looking for a way out of the country's prolonged crisis.
All the while, the president seeks to justify his moves to increase central control by using the rhetoric of law and order.
www.atimes.com /c-asia/BF23Ag02.html   (903 words)

  
 Industrial News: New and Innovative Well Casing Centralizer System Now Available in the North American Market
Developed in Australia in response to the need for a flexible, corrosion-resistant, economical centralizer, kwik-ZIP® casing centralizers have become the centralizer of choice for both the domestic and the commercial water well drilling industry and are also used extensively on environmental monitoring wells.
Kwik-ZIP® centralizers are also easy and economical to transport and store in stackable flat segments, eliminating transportation and storage issues that often occur with traditional steel centralizers.
I especially like how the centralizers are stacked together and packaged, eliminating huge boxes and damaged centralizers which were the norm for the prefabricated centralizers I used to use.
www.industrialnewsupdate.com /archives/2005/07/new_and_innovat.php   (871 words)

  
 About Cass-Clay Dairy: In the Beginning
Their only market was the "centralizer," a large plant in Moorhead, Minnesota, that bought their dairy output for local and national distribution.
However, the centralizer had no competition and could pay the farmers whatever it wished.
Despite threats from the centralizer, which even planted a spy in the farmers' organization, the Cass-Clay project moved forward.
www.cassclay.com /about1.html   (748 words)

  
 JPT (Jan 2005): Technology Applications   (Site not responding. Last check: )
The new centralizer evolved from the company's zinc-alloy Spir-o-lizer centralizer, which is used in extreme conditions, such as window systems in multilateral wells.
The centralizer uses Teflon inserts, with a very low friction coefficient of 0.04, molded into its blades to reduce sliding forces while running inside casing.
The centralizer's spiral blades make 360° cement placement straightforward, and greater flow-by reduces surge pressure while running pipe into the hole.
www.spe.org /spe/jpt/jsp/jptmonthlysection/0,2440,1104_11038_3279049_3281896,00.html   (1421 words)

  
 Oilfield Glossary: Term 'centralizer'
Tool centralization may be required for several reasons: to prevent the tool from hanging up on obstructions on the wellbore wall, to place fluid efficiently and to avoid excessive standoff.
They may be mounted on the outside surface of the logging tool or else mounted in-line, between two cartridges or sondes.
Some measurements, such as acoustic logs, respond better when the tool is centralized, while others, including induction logs, are better when eccentralized.
www.glossary.oilfield.slb.com /Display.cfm?Term=centralizer   (198 words)

  
 Brunel Oilfield Services Grows Internationally
Ezee-Thermal Centralizers have been engineered to deliver a thermal stability of -40°C to 240°C for Production Riser centralization and thermal insulation applications with the added benefit of having the same mechanical properties as the Ezee-Glider™ Centralizer.
Solid metal centralisers and roller type solid steel centralisers have to date been used by many operators when requirements for centralising units are needed for extended reach and/or horizontal well liners, casing and sand screen installations.
In particular the roller type centralisers are not very suited for running into open hole due to their design (will tend to "plow"), and the flow-by area is poor.
www.emediawire.com /releases/2005/9/emw273024.htm   (580 words)

  
 Welded Bow-Spring Centralizer (Data Sheet)
Slip-on centralizers are manufactured with solid end rings, requiring the centralizer to be slipped on the casing OD during installation.
Hinged centralizers are manufactured in segments, allowing the centralizer to be installed easily around the casing OD.
The dualcontact centralizer should only be installed between a collar and stop ring—never over a casing collar.
www.halliburton.com /public/cem/contents/Data_Sheets/Web/I_through_Z/WELDEDCENTRALIZER.asp   (251 words)

  
 MA 407 Modern Algebra Title
Note C(a) is the centralizer of a and Z(G) = C(G) is the center of the whole group.
In groups that are not, we can look at for which elements in the group the group operation is in fact commutative.
In other words, the centralizer of an element is the set of all elements in G which commute with that element.
www4.ncsu.edu /~loek/courses/MA407/projects.html   (511 words)

  
 Pipes Centralizer :: Pumping equipment :: Products ::
The piðes ñåntralizer is designed to prevent the bending and the lateral vibrations of the barrel when the sucker-rod pump is operating.
Besides, the ñåntralizer is used to seal the clearance between the ðump barrel and the oilwell tubing.
The Ö-73.Á01.000 (C-73.B01.000) piðås centralizer consists of the body (2), where a metal-rubber seating cup (1) is located and an spacer ring (5).
www.opk-oil.ru /eng/products/pump/centralizer   (231 words)

  
 Lincoln the Great Centralizer - Dispatch Depot Message Board   (Site not responding. Last check: )
The attempt of any of the parts to exercise it is usurpation, and ought to be repelled by those to whom the people have delegated their power of repelling it." [US Supreme Court, Cohens v.
We had a centralized government from the moment the Constitution was ratified.
A majority held in restraint by constitutional checks and limitations, and always changing easily with deliberate changes of popular opinions and sentiments, is the only true sovereign of a free people.
civilwartalk.com /forums/showthread.php?t=22119   (3168 words)

  
 Citebase - Degenerate affine Hecke algebras and centralizer construction for the symmetric groups
Authors: Molev, A. Olshanski, G. In our recent papers the centralizer construction was applied to the series of classical Lie algebras to produce the quantum algebras called (twisted) Yangians.
We study the `stable' properties of the centralizers of S(n-m) in the group algebra C[S(n)] as n increases with m fixed.
We construct a limit centralizer algebra A and describe its algebraic structure.
citebase.eprints.org /cgi-bin/citations?id=oai:arXiv.org:math/0002165   (186 words)

  
 Baker Oil Tools Fishing Services - Systems and Products - Thru-Tubing Fishing - Accessory Tools
CENTRALIZER The Thru-Tubing Hydraulic Actuated Centralizer offers the ability to centralize a fishing tool string in the casing during thru-tubing fishing operations.
The Thru-Tubing Fishing Mechanical Bow Spring Centralizer offers the ability to centralize a fishing tool string in the casing during thru-tubing fishing operations.
The Thru-Tubing Knuckle Joints are used in fishing operations in deviated wellbores, or in any situation requiring centralization of the catch tool in the casing.
www.bakerhughes.com /bot/fishing_services/products_thru_tools.htm   (391 words)

  
 Characters of Brauer's centralizer algebras., Arun Ram
[HW1] P. Hanlon and D.B. Wales, On the decomposition of Brauer's centralizer algebras, J. Algebra, 121 (1989),409-445.
[R2] A. Ram, Representation theory and character theory of centralizer alge- bras, Dissertation, University of California, San Diego, 1991.
[Wzl] H. Wenzl, On the structure of Brauer's centralizer algebras,Ann.
projecteuclid.org /getRecord?id=euclid.pjm/1102620457   (285 words)

  
 Integral® Centralizer™ Hip System   (Site not responding. Last check: )
Biomet’s Integral® Centralizer™ hip system was designed to evenly distribute stress between the implant and thighbone.
Biomet’s Integral® Centralizer™ hip is designed for use with bone cement.
The Integral® Centralizer™ hip stem is just one option available to you and your orthopedic surgeon.
www.biomet.com /patients/integral_centralizer.cfm   (159 words)

  
 centralizer - OneLook Dictionary Search
Centralizer : Eric Weisstein's World of Mathematics [home, info]
centralizer, centralizer, centralizer : PlanetMath Encyclopedia [home, info]
Phrases that include centralizer: bow spring centralizer, casing centralizer, centralizer and normalizer, steel centralizer
www.onelook.com /?w=centralizer   (0 words)

  
 Singular Manual: centralizer
In general, one cannot predict the number or the heighest degree of centralizing elements.
If N is given, the computation stops if at least N centralizing elements has been found.
Warning: if N is given and bigger than the real number of generators, the procedure may not terminate.
web.mit.edu /singular_v3.0/distrib/Singular/3-0-0/html/sing_411.htm   (129 words)

  
 8 Centralizer Near-rings
For a centralizer near-ring, it is easy to decide whether it contains an arbitrarily given
This is in contrast to the case of transformation near-rings.
Dually, it is hard to compute non-trivial elements of an arbitrary centralizer near-ring(easy for a transformation near-ring).
www.algebra.uni-linz.ac.at /sonata/papers/jsc2000/node8.html   (161 words)

  
 Antelope Oil Tool - Casing Centralizer - Cementation Tools & More
Antelope Oil Tool manufactures proven primary cementation tools utilized in the oil and gas industry worldwide.
AOT is licensed to manufacture under API Specification Q1 and 10D and maintains an ISO 9001 registered Quality Management System for the design and manufacture of casing centralizers and related accessories.
We design and manufacture casing centralizers and related accessories.
www.antelopeoiltool.com   (0 words)

  
 Werner Beiter | Dauchingen | Germany | Produkte | Centralizer
Der Beiter Hood ist die Schutzkappe für den Gewichtsadapter des Beiter Centralizers.
Durch Anwendung des Beiter Hood kann das freistehende Gewinde des Beiter Centralizer Gewichtsadapter abgedeckt werden.
Der Beiter Hood ist in allen Centralizer Farben (Deckel und Mittelteile): Blau, Schwarz, Weiss, Rot, Grün, Grau, Perle, Oyster, Orange, Gelb, Lime, Rosé und Graphit.
www.wernerbeiter.com /de/produkte/centralizer/Hood.php   (0 words)

  
 Pius XII at War by George Crispin
The true costs of the war were not only the 620,000 battlefield-related deaths (and 50,000 civilian deaths) out of a national population of 30 million.
The true costs included a change in the character of our government into one where states lost most of their sovereignty to the central government.
George Crispin [send him mail] is a retired businessman who heads a Catholic homeschooling cooperative in Auburn, Alabama.
www.lewrockwell.com /orig5/crispin7.html   (334 words)

  
 GudAnuf, Inc. is a full service custom software solution provider.
Since 1980, GudAnuf has helped leading organisations in the apparel industry to implement management solutions that streamline production planning, activity and resource tracking, cost management and information analysis across the organization.
Contracting and Renovations Software - "The Operations Centralizer and Production Scheduler"
GudAnuf, Inc branched out to the Construction and Home Contracting business at the start of the 21st century.
gudanuf.com   (0 words)

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