FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2074490139> ?p ?o ?g. }

• W2074490139 abstract "Abstract In conventional vertical drilling, the drill string is tripped in, allowed to drill to the predetermined depth and tripped out so that a bit of a smaller diameter can be attached to continue drilling the hole. Extendable arm drill bit is essentially a rotary drill bit in which the roller cones can be extended so that the diameter of the bit corresponds to the required diameter of the hole to be drilled. This extension is done hydraulically by diverting some of the pressure of the circulating drilling mud to compress an assembly which would push down the roller cones, thus increasing the diameter. Now as drilling continues, the diameter of the bit can be adjusted by diverting a lesser amount of circulating pressure on the bit thereby contracting it to achieve a smaller diameter. It could be imagined like a tripod standing on its three legs. The idea behind this proposal is to save the time, power and the cost of tripping operations of the drill string to change the bit to a smaller diameter one, by reducing the frequency of tripping the string, if not completely eliminating the process. This would result in an increase in the overall rig efficiency, both in terms of time and mainly money. Thus, the time and money saved can be diverted, if required, towards problems arising due to unexpected hole problems and pipe stuck-ups. This paper gives the description of the most suitable design of such a drill bit and the possible modifications of this concept to be applicable in future developments. Introduction Through the history of oil well drilling, individual concentric lengths of pipe are used to line the borehole. This process results in stability of the hole and avoiding the hole from caving in. But it also leads to structural redundancy of the casing that is used as a bore-hole liner and results in an increase in the cost of both the material and logistics involved. During the drilling operation, there is a need to isolate sections of the well depending upon a variety of geological factors which range from abnormal pore pressure to wellbore instability to hydrocarbon or water bearing zones. From the time rotary drilling was employed, wells have been drilled in a step-wise manner i.e. drilling a larger diameter hole at the surface and proceeding to the reservoir with a receding hole diameter. The bore-hole drilled is cased in between changing of the bit to drill a smaller diameter hole. A single diameter bore-hole cannot be drilled throughout its entire length due to certain parameters arising largely due to geothermal pressure gradients. But still, two techniques, namely the expandable tubulars and drilling with casing methods drift apart from the traditional drilling operations. In cases where there is an uncertainty about the bore-hole instability, simultaneous lining or casing of the hole alongside drilling removes some concern. But this method, which is employed in casing while drilling operations, reduces the annular space between the casing and the bore-hole as it involves drilling with concentric casing strings rather than the traditional drill pipes. Certain grades of steel have much greater ductility which allows adequate plastic deformation to be achieved without much harmful work-hardening, in such a way that it is feasible to increase the diameter of a pipe uniformly and without any uneven thinning of the cross section. The development of pipe connections which are capable to accommodate this increase in diameter has brought the concept of mono-bore wells in the limelight. One of the convenient methods for drilling a mono-bore well is employed by the casing while drilling method. The drilling BHA passes through the casing of restricted diameter to get attached at the bottom of the casing to drill till the pre-determined depth. Later the BHA is retrieved by wireline at the end of drilling. But since the BHA has to pass through the casing, the size of the pilot bit and the underreamers used suffers. Also a smaller size of motor is used which reduces power output and increases sliding drilling ratio due to its flexibility." @default.
• W2074490139 created "2016-06-24" @default.
• W2074490139 creator A5048046384 @default.
• W2074490139 creator A5059396112 @default.
• W2074490139 date "2007-03-31" @default.
• W2074490139 modified "2023-09-25" @default.
• W2074490139 title "Extendable Arm Drill Bit : A Novel Idea" @default.
• W2074490139 doi "https://doi.org/10.2118/106582-ms" @default.
• W2074490139 hasPublicationYear "2007" @default.
• W2074490139 type Work @default.
• W2074490139 sameAs 2074490139 @default.
• W2074490139 citedByCount "0" @default.
• W2074490139 crossrefType "proceedings-article" @default.
• W2074490139 hasAuthorship W2074490139A5048046384 @default.
• W2074490139 hasAuthorship W2074490139A5059396112 @default.
• W2074490139 hasConcept C117011727 @default.
• W2074490139 hasConcept C127313418 @default.
• W2074490139 hasConcept C127413603 @default.
• W2074490139 hasConcept C173736775 @default.
• W2074490139 hasConcept C38652104 @default.
• W2074490139 hasConcept C41008148 @default.
• W2074490139 hasConcept C78519656 @default.
• W2074490139 hasConceptScore W2074490139C117011727 @default.
• W2074490139 hasConceptScore W2074490139C127313418 @default.
• W2074490139 hasConceptScore W2074490139C127413603 @default.
• W2074490139 hasConceptScore W2074490139C173736775 @default.
• W2074490139 hasConceptScore W2074490139C38652104 @default.
• W2074490139 hasConceptScore W2074490139C41008148 @default.
• W2074490139 hasConceptScore W2074490139C78519656 @default.
• W2074490139 hasLocation W20744901391 @default.
• W2074490139 hasOpenAccess W2074490139 @default.
• W2074490139 hasPrimaryLocation W20744901391 @default.
• W2074490139 hasRelatedWork W1591668902 @default.
• W2074490139 hasRelatedWork W1980884009 @default.
• W2074490139 hasRelatedWork W2017235318 @default.
• W2074490139 hasRelatedWork W2019610525 @default.
• W2074490139 hasRelatedWork W2026215647 @default.
• W2074490139 hasRelatedWork W2035827450 @default.
• W2074490139 hasRelatedWork W2051195767 @default.
• W2074490139 hasRelatedWork W2349600901 @default.
• W2074490139 hasRelatedWork W2585248001 @default.
• W2074490139 hasRelatedWork W2924776568 @default.
• W2074490139 isParatext "false" @default.
• W2074490139 isRetracted "false" @default.
• W2074490139 magId "2074490139" @default.
• W2074490139 workType "article" @default.