THE PRODUCTION OF OIL-GAS EQUIPMENT AND SERVICE SUPPORT


Bungs ПРПЦ

Type of bung

Cementation lower and upper separation cement bungs:ПРП-Ц -102, ПРП-Ц-127, ПРП-Ц 140/146, ПРП-Ц-168, ПРП-Ц-178, ПРП-Ц-194, ПРП-Ц-219, ПРП-Ц-245, ПРП-Ц-273, ПРП-Ц-324, ПРП-Ц-340, ПРП-Ц-426

General information about the product: Selling separation bungs  of ПРП-Ц type – are used during cementing (grouting) operations in the well and they are intended: lower bung (II) to maintain the quality of the head portion of cement (grouting) mortar in the casing string by separation and prevention mixing it with a buffer fluid moving in front, the upper tube is traditionally used – it is necessary to obtain a “Stop” pressure jump, signaling the end of the cementing process and to prevent I mixing and separating cement (grouting) mortar and squeezing fluid (drilling mud) pumped into the casing string. In addition, the lower and upper bungs clean the inner surface of the casing from the crust of the remnants of drilling and cement mortars.
 

Technical specifications

                                 Bung dividing squeezing ПРП-Ц

102

114

127

140/

146

168

178

194

219

245

273

324

340

426

Height,mm

180

200

220

230

220

225

265

290

295

380

400

440

490

Outer diameter, mm

95

105

118

139

158

167

185

210

233

267

317

332

420

Sealing diameter

maximum

minimum

93                90

103 98

114 105

133 124

154 134

164

  150

180 164

205 190

230 210

265 250

314 300

328 316

415 390

Permissible differential pressure “Stop” on the plug, MPa

7,0

5,0

Mass of ПРП –Ц- ,kg

1,2

1,4

1,5

2,8

2,9

3,4

7,0

9,0

11,0

25,0

35,0

38,0

60,0

 

The lower (H) bungs of ПРП-Ц-Н-114324  mm are hollow 3-blade rubber products with a sealed aluminum drillable nozzle with an open end and a 20 mm thick rubber diaphragm in the lower end. The diaphragm breaks after the lower plug is planted on the ЦКОДМ valve and with a subsequent pressure increase of 1.5 – 2.0 MPa.

Upper bungs ПРП-Ц-102178 ммall-rubber, 3-blade products with a cast-iron drilled support disk pressed in the lower part – a washer. Upper bungs ПРП-Ц-194324 мм also all-rubber, 3-blade, but instead of the support disc, the washers are equipped with a pressed vertical drillable cement core.

Bungs ПРП-Ц-340 и 426sealing, drilled with 4 and 5, respectively, with horizontal rubber petals – rings that are cemented from the inside.

The lower (H) bungs  – with a central cemented aluminum drillable nozzle with an open bottom and a rubber diaphragm 20 mm thick in the upper end.

For the successful use of ПРП-Ц bungs – it is recommended to use cementing heads equipped with pressure compensators and locking screws, and their length for plugs 245 mm should be at least 60 mm, and for plugs mm at least 90-100 mm.

Storage squeezing plugs are stored in an upright position in dry, closed rooms at an air temperature of not lower than + 7 ° C and not higher than + 30 ° C.