Dezhou Rundong Petroleum Machinery Co., Ltd.
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  • Contact Person : Mr. fang zheng
  • Company Name : Dezhou Rundong Petroleum Machinery Co., Ltd.
  • Tel : 86-534-2620099
  • Fax : 86-534-2621898
  • Address : Shandong,Dezhou,No.1189, Xinhu Street ,Decheng District
  • Country/Region : China
  • Zip : 253000

Top/Bottom Cementing Plug For Oil Drilling/Well Cementing/Casing Accessories

Top/Bottom Cementing Plug For Oil Drilling/Well Cementing/Casing Accessories
Product Detailed
1.Bottom plug & Top Cementing Plug 2.Separate cement slurry from mud 3.Oil & acids resistance 4.heat-resisting and tough

Top/Bottom Cementing Plug For Oil Drilling/Casing Accessories 

A rubber plug used to separate the cement slurry from other fluids, reducing contamination and maintaining predictable slurry performance. Two types of cementing plug are typically used on a cementing operation. The bottom plug is launched ahead of the cement slurry to minimize contamination by fluids inside the casing prior to cementing. A diaphragm in the plug body ruptures to allow the cement slurry to pass through after the plug reaches the landing collar. The top plug has a solid body that provides positive indication of contact with the landing collar and bottom plug through an increase in pump pressure.

Bottom plug (Pumpdown plug) & Top plug (Liner wiper plug)

                       

     *normal style                                              * anti-rotary style  

                 

 BOTTOM PLUG (PUMPDOWN PLUG )

Specifications ( mm)

177.8/139.7

127.0/114.3

101.6

88.9

Max O.D. of Guide Head  (mm)

59

47

40

37

Length of Pumpdown Plug (mm)

308

303

233

233

TOP PLUG (LINER WIPE PLUG)

Specifications (mm)

177.8

139.7

127/ 114.3

101.6

88.9

Shearing Pressure ( MPa)

12

12

12

12

12

I.D. of Wiper plug (mm)

55

50

42

35

32

Back-pressure (MPa)

25

25

25

25

25

Structure features: The top plug is solid. The bottom plug is hollow. They can all be drilled out with PDC bits. The material of the plug body is acrylonitrile- butadiene rubber. It is heat-resisting and tough.

Main Parameters

Specification of Casingmm(inch)

O.D. mm(inch)

Height Top/Bottommm(inch)

139.7(5-1/2)

142.9(5-5/8)

250(9-27/32)

177.8(7)

180.98(7-1/8)

235/260(9-1/4/10-1/4)

244.5(9-5/8)

247.65(9-3/4)

274(10-25/32)

339.7(13-3/8)

342.9(13-1/2)

355(13-63/64)

     

             

Top/Bottom Cementing Plug For Oil Drilling/Well Cementing/Casing Accessories



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