Liner Wiper Plug
The Liner Wiper Plugmay be shear-pinned on the bottom of the setting tool. The conjunction with pump down plug keeps mud to be separated from cement and removes the cement from the inside of the liner.
The Saigao latch-in liner wiper plug is similar in design to the standard landing collar and float collarand has the same function of wiping the liner of excess cement. The primary difference is that it has a latch-in nose assembly located at the bottom of the plug. After wiping the liner the plug lands in a landing collar located near the bottom of the liner. The plug nose has a snap ring that latches into the landing collar, thus locking the wiper plug and drill pipe dart tandem in place. This ensures that the plugs will not move during subsequent operations. The landing collar serves a second purpose in that it has a function similar to that of a float collar. The float collar contains a valve that allows the cement to flow to the bottom of the liner and through the float shoe. Once the cement job is complete the valve in the float shoe closes so cement doesn’t come back up the liner. If the float shoe fails the valve in the float collar acts as a back up to the float shoe. Once the plug assembly latches into the landing collar it effectively closes off any pathway for fluid flow. Therefore a wiper plug landing collar can effectively be used in place of a standard float collar. The landing collar is an additional item that is used only with the latch-in wiper plug. All materials in the cement wiper plugand landing collar can be easily drilled out later.
Technical Parameters of Liner Wiper Plug
|
Specifications, mm |
Φ177.8 |
Φ139.7 |
Φ127/Φ114.3 |
Φ101.6 |
Φ88.9 |
|
Shearing Pressure, MPa |
12 |
12 |
12 |
12 |
12 |
|
Φ55 |
Φ50 |
Φ42 |
Φ35 |
Φ32 |
|
|
Back-pressure, MPa |
25 |
25 |
25 |
25 |
25 |
For more about oilfield cementing tools, contact us.
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
Casing Centralizer | A casing centralizer is a device that is mounted on a casing string to center the casing string within the wellbore. It is one of the casing access... |
 |
Non-welded Hinged Semi-rigid Bow Spring Centralizer | Non-welded Hinged Semi Rigid Centralizer Saigao's non-welded hinged semi-rigid bow spring centralizers ensure high efficiency in casing jobs on de... |
 |
Drill Pipe | The china drill pipeis a steel pipe with a tail thread for connecting the surface equipment of the drilling rig and the drilling equipment or botto... |
 |
Perforated Pipe | In the drilling process, in order to prevent the collapse of the hole wall, sand (water), water leakage, or to separate the water layer, the metal ... |
 |
Drill Pipe Centralizer | Saigao's Drill pipe Centralizerare used to centralize drill pipe, especially to ensure that inner string stab-in stinger is in center and properly ... |
