Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints
A thorough understanding and accurate calculation of the annulus pressure losses are paramount to drilling design and construction. However, due to the influence of the drillstring rotation and the abrupt dimensional variation at the joint, it is difficult to calculate the pressure loss by theoretic...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2023/6668841 |
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| _version_ | 1832547955168509952 |
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| author | Minghu Nie Yuchen Ye Zheng Wang Dandan Yuan Xingyi Wang Kai Wei |
| author_facet | Minghu Nie Yuchen Ye Zheng Wang Dandan Yuan Xingyi Wang Kai Wei |
| author_sort | Minghu Nie |
| collection | DOAJ |
| description | A thorough understanding and accurate calculation of the annulus pressure losses are paramount to drilling design and construction. However, due to the influence of the drillstring rotation and the abrupt dimensional variation at the joint, it is difficult to calculate the pressure loss by theoretical analysis in the annulus at the drillstring joints. Considering the geometric nonlinearity of drillstring joints and the unsteady flow of annular fluid caused by pipe rotation, based on the turbulence model k−ε, the flow field characteristics demonstrate the annulus pressure losses at the drillstring joint are studied by numerical simulation. Simulation results indicate that drillstring rotation speed, annular gap, and eccentricity greatly influence flow field and pressure losses at drillstring joints. The annular pressure loss would increase with the decrease of the annular gap and eccentricity but decrease with the increase of the drillstring rotation rate. The investigation method and results would help guide the design of drilling hydraulic parameters. |
| format | Article |
| id | doaj-art-ed1404b9de93419983dbd5906a1a589f |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-ed1404b9de93419983dbd5906a1a589f2025-02-03T06:42:48ZengWileyGeofluids1468-81232023-01-01202310.1155/2023/6668841Flow Field and Pressure Loss Characteristics at Rotary Drillstring JointsMinghu Nie0Yuchen Ye1Zheng Wang2Dandan Yuan3Xingyi Wang4Kai Wei5Engineering Technology Research InstituteEngineering Technology Research InstituteEngineering Technology Research InstituteEngineering Technology Research InstituteNational Engineering Research Center for Oil & Gas Drilling and Completion Technology (Yangtze University)National Engineering Research Center for Oil & Gas Drilling and Completion Technology (Yangtze University)A thorough understanding and accurate calculation of the annulus pressure losses are paramount to drilling design and construction. However, due to the influence of the drillstring rotation and the abrupt dimensional variation at the joint, it is difficult to calculate the pressure loss by theoretical analysis in the annulus at the drillstring joints. Considering the geometric nonlinearity of drillstring joints and the unsteady flow of annular fluid caused by pipe rotation, based on the turbulence model k−ε, the flow field characteristics demonstrate the annulus pressure losses at the drillstring joint are studied by numerical simulation. Simulation results indicate that drillstring rotation speed, annular gap, and eccentricity greatly influence flow field and pressure losses at drillstring joints. The annular pressure loss would increase with the decrease of the annular gap and eccentricity but decrease with the increase of the drillstring rotation rate. The investigation method and results would help guide the design of drilling hydraulic parameters.http://dx.doi.org/10.1155/2023/6668841 |
| spellingShingle | Minghu Nie Yuchen Ye Zheng Wang Dandan Yuan Xingyi Wang Kai Wei Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints Geofluids |
| title | Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints |
| title_full | Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints |
| title_fullStr | Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints |
| title_full_unstemmed | Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints |
| title_short | Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints |
| title_sort | flow field and pressure loss characteristics at rotary drillstring joints |
| url | http://dx.doi.org/10.1155/2023/6668841 |
| work_keys_str_mv | AT minghunie flowfieldandpressurelosscharacteristicsatrotarydrillstringjoints AT yuchenye flowfieldandpressurelosscharacteristicsatrotarydrillstringjoints AT zhengwang flowfieldandpressurelosscharacteristicsatrotarydrillstringjoints AT dandanyuan flowfieldandpressurelosscharacteristicsatrotarydrillstringjoints AT xingyiwang flowfieldandpressurelosscharacteristicsatrotarydrillstringjoints AT kaiwei flowfieldandpressurelosscharacteristicsatrotarydrillstringjoints |