Topic
Conductor pipe
About: Conductor pipe is a research topic. Over the lifetime, 216 publications have been published within this topic receiving 1724 citations.
Papers published on a yearly basis
1 / 2
Papers
Patent•
29 Mar 1976
TL;DR: An electrical two-way transmission system and method of constructing an electrical coaxial conductor assembly for a tubular fluid conductor composed of lengths of electrically conductive pipe having their ends connected in spaced relationship by external couplers, such as a well drill string having screwthreaded coupling collars connecting the ends of adjacent lengths of drill pipe, wherein said pipe and coupler provided an outer electrical conductor as discussed by the authors.
Abstract: An electrical two-way transmission system and method of constructing an electrical coaxial conductor assembly for a tubular fluid conductor composed of lengths of electrically conductive pipe having their ends connected in spaced relationship by external couplers, such as a well drill string having screwthreaded coupling collars connecting the ends of adjacent lengths of drill pipe, wherein said pipe and couplers provides an outer electrical conductor. An inner electrical conductor for the coaxial assembly is provided by tubes of thin ductile electrically-conductive material disposed within the outer conductor pipe, each inner conductor tube being electrically insulated from each pipe length by a complementary sheath of elastic dielectric liner material which envelopes said tube, the extremities of each sheathed tube being flared into conformity with the interiors of the end portions and transverse end faces of each pipe so as to anchor said tube against relative displacement, each sheathed tube being permanently deformed radially outward into contiguous conformity with each pipe interior and its end faces with each liner sheath expanded into sealing engagement therewith. An annular body of elastic dielectric material is disposed between the ends of adjacent pipe or within each pipe coupler and between the flared extremities of adjacent inner conductor tubes for insulating said tube extremities from adjacent pipe and coupler surfaces and has contact means for electrically connecting adjacent tubes to each other. The coupling of adjacent pipe deforms the annular body therebetween into fluid tight engagement with the tube extremities and adjacent pipe and coupler surfaces.
83 citations
TL;DR: In this paper, a finite element method (FEM) was used to evaluate the temperature rise around a hot pipe buried in soil and therefore the propagation of the hydrate melting front around the conductor and toward the piles.
Abstract: There is ice in the Gulf of Mexico, and this type of ice called gas hydrates burns when ignited. Gas hydrates form slowly within the soil mass when the gas seeping up from offshore oil reservoirs mixes with water under high pressures (>500 m of water) and low temperatures (a few degrees Celsius). The oil travels from the well to the platform through a conductor pipe. The oil and therefore the conductor are very hot and melt the existing hydrates that are within the depth of the foundation piles. The melting process generates a large amount of gas that can endanger the stability of the foundation. The rate at which the temperature rises around the hot conductor in the hydrate rich soil is studied using the finite-element method (FEM). A detailed thermodynamic analysis is performed. It includes a laboratory experiment to help validate FEM, a study of the mesh size, the thermodynamic analysis results, a study of the conductor size, and of the latent heat influence. The results can be used to evaluate the temperature rise around a hot pipe buried in soil and therefore the propagation of the hydrate melting front around the conductor and toward the piles.
64 citations
Patent•
13 Apr 1987
TL;DR: In this article, a method and apparatus for setting an underwater conductor pipe in which the conductor pipe is lowered into the wellhole on a drill string as the borehole is being formed by a drill bit and underreamer positioned at the end of the drill string below the end-of-the-pipe.
Abstract: A method and apparatus for setting an underwater conductor pipe in which the conductor pipe is lowered into the wellhole on a drill string as the borehole is being formed by a drill bit and underreamer positioned at the end of the drill string below the end of the conductor pipe. The drill string and conductor pipe are detachably interconnected by a housing latch which includes means for detachably securing the drill string and drilling assembly to the conductor pipe. The drill string is provided with an upper latch sub, which retains and supports the drill string in its fully extended position within the conductor pipe, and a lower latch sub which retains and supports the drill string in the retracted position. As the apparatus is lowered a drill motor actuates the drilling assembly such that the well hole is formed in the ocean floor. Drilling continues until the permanent guide base of the conductor pipe engages the ocean floor. Thereafter, the upper latch sub is released and the drill string is retracted until the lower latch engages the latchhousing. The outer annulus of the conductor pipe is then cemented into place while pressure within the conductor pipe is maintained to prevent the cement from travelling up the inside of the conductor pipe. Once the cement is set, the latchhousing is released so that the drill string and latchhousing can be removed from the conductor pipe.
57 citations
Patent•
13 Oct 1981
TL;DR: In this article, a rotating head for a rotary drilling rig is described, which is to be secured to the top of the well pipe having an inner rotating portion with an opening there through which permits passage of drill pipe, pipe joints, and Kelly tools.
Abstract: There is disclosed a rotating head for a rotary drilling rig which is to be secured to the top of the well pipe having an inner rotating portion with an opening therethrough which permits passage of drill pipe, pipe joints, and Kelly tools; the rotating portion has an annular drive rubber formed integrally with the top portion thereof. A rotating head drive bushing having an opening with a cross-sectional shape generally conforming to the cross-section of the Kelly tool to permit only sliding motion therebetween is provided with helical external ridges which produce a disengagable gripping action with the opening in the drive rubber at the top of the rotating portion of the rotating head. The rotating portion has a conventional stripper rubber at the bottom thereof and is mounted with a double roller bearing to provide low friction motion with respect to the fixed portion of the head. The double roller bearing is lubricated with a viscous lubricating material and paddles are provided between the sets of rollers of the double roller bearing for distributing the viscous lubricating material and in particular propel it onto the upper set of bearings; the upper body portion of the rotating head is readily detachable from the lower sleeve portion which is normally welded to the well conductor pipe.
46 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 2 |
| 2019 | 6 |
| 2018 | 10 |
| 2017 | 5 |
| 2016 | 4 |
| 2015 | 9 |