GB557823A - - Google Patents

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Publication number
GB557823A
GB557823A GB557823DA GB557823A GB 557823 A GB557823 A GB 557823A GB 557823D A GB557823D A GB 557823DA GB 557823 A GB557823 A GB 557823A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
amp
cast
plug
plugs
drilling
Prior art date
Application number

Links

Abstract

557,823. Cementing plugs for wells &c. CUTHILL, J., and OIL WELL ENGINEERING CO., Ltd. June 18, 1942, No. 8380. [Class 85] Plugs for use in cementing casings in wells &c. are formed by. moulding or casting in concrete or like cementitious material and have annular packing rings or diaphragms cast therein; means also are provided whereby, on penetration of the plugs by drilling, the drilling mud is stained a distinctive colour. A bottom plug, Fig. 4, has a reduced upper end 6b in which a flexible ring or diaphragm 8 of rubber &c. is held by nails, wooden pegs &c. 9. A tube 11 of compressed paper, artificial resin &c. extends across a recess 10 in the plug to form a handle, while passages 12, 13, allow for the flow of cement &c. forced past the ring &c. 8 A container 30 is cast in the plug, or inserted in a recess cast therein, and contains a dye &c. in solid, powder, liquid or crystal form for colouring the drilling mud. A top plug, Fig. 5, may be reduced at the central part 14b, and also has a rubber diaphragm 15, flanged sealing ring 18 and a dye &c. container &c. 31 cast therein.
GB557823A GB557823A (en)

Publications (1)

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GB557823A true true GB557823A (en)

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ID=1748795

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GB557823A GB557823A (en)

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GB (1) GB557823A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385356A (en) * 1999-02-26 2003-08-20 Shell Int Research Method of applying an axial force
GB2347952B (en) * 1999-02-26 2003-10-08 Shell Int Research Apparatus for coupling a tubular member to a pre-existing structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385356A (en) * 1999-02-26 2003-08-20 Shell Int Research Method of applying an axial force
GB2347952B (en) * 1999-02-26 2003-10-08 Shell Int Research Apparatus for coupling a tubular member to a pre-existing structure
GB2385356B (en) * 1999-02-26 2003-10-08 Shell Int Research A method of applying a force to a piston

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