DSDP Technical Note 3 - Deep Sea Drilling
Transcript of DSDP Technical Note 3 - Deep Sea Drilling
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TECHNICAL NOTE NO. 3
RE-ENTRY CONE/TRIPLE CASING HANGER DESIGN
Prepared for theNATIONAL SCIENCE FOUNDATION
National Ocean Sediment Coring ProgramUnder Contract C-482
by the
UNIVERSITY OF CALIFORNIAScripps Institution of OceanographyPrime Contractor for the Project
June 1984
W. A. Nierenberg, Director M. N. A. PetersonScripps Institution of Oceanography Principal Investigator and
Project ManagerDeep Sea Drilling ProjectScripps Institution of Oceanography
iii
INTRODUCTION
Concept development and design of the "Triple Casing Hanger" system beganin October 1976. William Fischer, a consultant with many years of exper-ience in the oil industry was contracted to develop the original conceptbased on the successful "dual casing hanger1* system already in use aboardthe GLOMAR CHALLENGER drill ship.
The triple casing hanger design allowed for deployment of two distinctcasing strings (16" and 11-3/4"), in addition to the 20" conductor pipewashed in with the re-entry cone itself.
Machine drawings and hardware requirements for the system were developedat Deep Oil Technology (now part of Fluor Drilling Services).
A Prototype assembly was fabricated in the fall of 1978. Latch-in andacuation testing of the system was begun but not completed. Additionaltesting should be performed prior to actual sea trials of the system.
INDEX
RE-ENTRY CONE/TRIPLE CASING HANGER SYSTEM
I. OPERATIONAL SEQUENCE DRAWINGS
II. PARTS LIST & MACHINE DRAWINGS
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TRIPLE CASING STRING SYSTEM
o SONAR REFLECTORS
DRILL STRING
RE-ENTRYCONE
RE-ENTRY CONE& 20" CASING"JETTED-IN"10-50 METERS
16" CASINGCEMENTED50-300 meters
I
11 3/4" CASINGCEMENTED
300-1000 METERS
18 7/8" HOLE
14 7/8" HOLE
9 7/8" HOLE
TRIPLE CASING STRING
OPERATIONAL SEQUENCE
DRAWINGS 1 THROUGH 4
R-1071-00R-l072-00R-l073-00R-1074-00
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ITEM
OH 4700
OH 4701
OH 4702
OH 4703
OH 4704
OH 4705
OH 4706
OH 4707
OH 4708
OH 4709
OH 4710
OH 4711
OH 4712
OH 4713
OH 4714
OH 4715
OH 4716
OH 4717
OH 4718
OH 4719
OH 4720
OH 4721
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INDEX - OPERATIONS - DEEP SEA DRILLING PROJECT
DESCRIPTIONTRIPLE CASING SYSTEM
Assembly - Re-entry Cone & 20" x 16" x 11 3/4" Casing Hangers
Assembly - 20" x 16" x 11 3/4" Casing Hanger
Landing Assembly - Re-entry Cone & 20" Casing
Assembly - 20" Casing Hanger
Body - 20" Casing Hanger
Transition Sub - 20" Casing Hanger
Latch Groove Ring - 20" Casing Hanger
Landing Assembly - 16" Casing
Assembly - 16" Casing Hanger
Body - 16" Casing Hanger
Transition Sub - 16" Casing Hanger
16" Latch Retaining Ring - 20" x 16" Assembly
Landing Assembly - 11 3/4" Casing
16" Hex-Kelly Landing Tool Assembly
16" Bushing - 11 3/4" Hex-Kelly
Assembly - .20" Paddle Type Landing Tool
Latch Sleeve - 20" Paddle Type Landing Tool
20" Paddle Actuation
Paddles - 20" Landing Tool Assembly
15 7/8" O.D. Modified Butt Gage
Ribs - 16" Casing Hanger Assembly
Re-entry/Triple Casing String System Assembly
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DRWG. NO.
D-OH470O
D-OH4701
D-OH4702
D-OH4703
D-OH47O4
C-OH4705
C-OH4706
D-OH4707
D-OH4708
D-OH4709
C-OH4710
C-OH4711
D-OH4712
D-OH4713
D-OH4714
D-OH4715
D-OH4716
D-OH4717
C-OH4718
D-OH4719
B-OH4720
D-OH4721
-9-
DATE August 8, 1983 PAGE 1 OF 1
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