Modeling and Research on Offshore Casing Cutting of Hydraulic Internal Cutting Device
Abstract
:1. Introduction
2. Mechanical Casing Cutting Device
2.1. Basic Structure of Mechanical Casing Cutting Device
2.2. Working Principle
3. The Theory Model of Casing Cutting
3.1. The Relationship between Piston Displacement and Cutting Tool Tip Radius
3.2. Calculation of Cutting Torque
3.3. Calculation of Wellhead Driving Torque
4. The 2D Cutting Simulation Based on Abaqus
4.1. Theoretical Model of Cutting
4.2. Simulation Model and Boundary Conditions Based on Abaqus
4.3. Simulation Analysis and Results Based on Abaqus
4.3.1. The Influence of Different Tool Rotational Speeds on Cutting Simulation
4.3.2. The Impact of Different Cutting Depths on Cutting Simulation
4.3.3. The Impact of Different Tool Front Angles on Cutting Simulation
4.3.4. Summary of the Chapter
5. Analysis of Influencing Factors on the Cutting Efficiency of the Cutting Tool
5.1. The Cutter Face Angle
5.2. The Driving Force of Drilling Fluid
5.3. The Cutting Depth L and Revolution of Drill String n
6. Case Study and Discussion
6.1. Field Casing Cutting Operation Condition
6.2. Torque Comparison at Different Rotational Speeds
7. Conclusions
- (1)
- The increase in the extension distance will lead to the increase in the displacement required by the piston. When the extension distance increases from 0 to 30 mm, the displacement required by the piston also increases from 10 mm. When the extension distance is fixed, the displacement required by the piston will increase with the increase in the cutter face angle .
- (2)
- The increase in the tool face angle will lead to the reduction in the tool cutting torque. When the tool face angle increases from 45° to 65°, the tool cutting torque decreases from about 3200 N·m to about 2000 N·m.
- (3)
- The cutter face angle , cutting depth , and drilling revolution will affect the driving torque of wellhead , and the increase in cutter face angle will reduce the driving torque of wellhead . The increase in cutting depth will lead to the increase in wellhead driving torque . When the cutting depth is constant, the increase in the drilling revolution will lead to the increase in the wellhead driving torque .
- (4)
- According to Section 5.3, with the increase in cutting depth , the proportion of cutting torque to wellhead driving torque decreases gradually. It cannot judge the completion of the casing cutting according to a sudden drop in wellhead driving torque since the proportion is less than 30% while working in deep water (cutting depth > 800 m).
Author Contributions
Funding
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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A/MPa | B/MPa | C | n | m |
---|---|---|---|---|
1150 | 739 | 0.014 | 0.26 | 1.03 |
Parameters | Value | Parameters | Value |
---|---|---|---|
/mm | 151 | f | 3.5 |
/mm | 168 | 32 | |
qm/(Kg/m) | 122 | n/(r/min) | 45 |
K | 3 | /() | 85 |
ρ/(kg/m3) | 1025 | L/m | 850 |
g/(N/Kg) | 9.8 | 313 | |
Sz/mm | 0.12 | 340 | |
Z | 12 | 298 |
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Sun, Q.; Tian, J.; Jin, Y.; Feng, D.; Hou, L. Modeling and Research on Offshore Casing Cutting of Hydraulic Internal Cutting Device. J. Mar. Sci. Eng. 2024, 12, 1026. https://doi.org/10.3390/jmse12061026
Sun Q, Tian J, Jin Y, Feng D, Hou L. Modeling and Research on Offshore Casing Cutting of Hydraulic Internal Cutting Device. Journal of Marine Science and Engineering. 2024; 12(6):1026. https://doi.org/10.3390/jmse12061026
Chicago/Turabian StyleSun, Qiaolei, Jie Tian, Yujie Jin, Ding Feng, and Lingxia Hou. 2024. "Modeling and Research on Offshore Casing Cutting of Hydraulic Internal Cutting Device" Journal of Marine Science and Engineering 12, no. 6: 1026. https://doi.org/10.3390/jmse12061026