Solid Core Casing Anchor
- 产品详情
- 产品参数
1, product introduction
The two-stage casing ground anchor is composed of a collar, an outer cylinder, a pressure cylinder, an upper choke ring, a lower choke ring, a ejector rod, an upper and lower connecting rod, an upper and lower push plug, an anchor head, first and second anchor flukes, etc. It has the characteristics of simple structure, scientific and reasonable, convenient use, reliable performance and so on.
2, working principle and operation method:
The tool is directly connected to the bottom of the casing string and lowered into the bottom of the well,Carry out collision pressure on ground anchor by cement plug instead of cement(Observe whether the pressure of the pressure gauge on the cement head suddenly increases and fluctuates). Whether the weight meter is gradually increasing, the pressure increase proves that the ground anchor has been hung into the formation, and then the casing is gradually lifted up, the pulling force is generally greater than the weight of the casing by about 30-40t/1000m), the casing generates prestress,After pulling to the specified force, the production casing is clamped on the casing head to complete the entire construction operation。
Note: Liaohe Oilfield oil well casing string connection structure from bottom to top (for reference only): guide shoe—casing ground anchor—root casing—compensator—outer thickened variable diameter casing—outer thickened casing—general Casing - Wellhead.
Using this tool for cementing can effectively slow down the thermal stress deformation caused by steam injection to heat the oil well casing string, and protect the life of the oil well casing. This tool has been used in Liaohe, Xinjiang, Daqing, Sudan, Kazakhstan It has been used in oilfields such as Stan for many years, and the effect is very ideal, and it is very popular among users.
3,Technical Parameters:
Specification model | Maximum liftanti-pull(KN) | Anti-extrusion strength (Mpa) | anti-stress strength (Mpa) | Work temperature (℃) | maximum outer diameter (mm) | Buckle type | shear pin nail pressure （MPa） | length (mm) | Maximum working diameter(mm) |
RB-Ⅱ-95/8″ | 1000 | 48 | 21 | -29∼370 | 270 | BTC | 6～8 | 2650 | 700 |
RB-Ⅱ-7″ | 1000 | 48 | 21 | -29∼370 | 200 | BTC | 6～8 | 2650 | 520 |
RB-Ⅱ-65/8″ | 1000 | 48 | 21 | -29∼370 | 190 | BTC | 6～8 | 2550 | 500 |
RB-Ⅱ-51/2″ | 1000 | 50 | 21 | -29∼370 | 160 | BTC | 6～8 | 2550 | 500 |
4,Conditions of Use：
for51/2″、65/8″、7″、95/8″Casing well completion project.
5,Precautions:
(1) Handle and handle with care during transportation and handling, and pay attention to protecting the threads at both ends.
(2) High-temperature thread oil should be evenly applied to the threads at both ends of the downhole.
(3) When the device goes down the well, it must be slow, and strong flushing and pressure are not allowed.
6、physical photos：
