Non-rotating cementing plug with molded inserts
Patent
·
OSTI ID:5356993
This patent describes an anti-rotation plug set for use with cementing equipment having an insert seat therein, the anti-rotation plug set and the cementing equipment for use in cementing a string of casing into a well bore. It comprises an upper plug including: a non-metallic body member having a plurality of teeth integrally formed on the lower end thereof and an elastomeric covering thereon having, in turn, wipers which engage the interior of the string of casing; and a lower plug including: a non-metallic body member having a bore therethrough, having teeth integrally formed on the upper end thereof which mate with the teeth integrally formed on the lower end of the nonmetallic body member of the upper plug when the upper plug engages the lower plugs, having teeth integrally formed on the lower end thereof, having an insert member in a portion of the bore through the non-metallic body member, and the cementing equipment comprising: an insert seat having teeth thereon which mate with the integrally formed teeth on the lower end of the non-metallic body member of the lower plug of the anti-rotation plug set when the lower plug of the anti-rotation plug set engages the cementing equipment during the cementing of the string of casing into a well bore.
- Assignee:
- Halliburton Co., Duncan, OK (United States)
- Patent Number(s):
- A; US 5095980
- Application Number:
- PPN: US 7-656545
- OSTI ID:
- 5356993
- Country of Publication:
- United States
- Language:
- English
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