Leak-off mechanism and pressure prediction for shallow sediments in deepwater drilling
文献类型：期刊论文
| 作者 | Yu, Baohua2; Liu, Wei2; Sun, Jin1,2 ; Deng, Jingen2; Tan, Qiang2; Tan, Qiang(China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China)
|
| 刊名 | JOURNAL OF OCEAN UNIVERSITY OF CHINA
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 17期号:1页码:65-71 |
| 关键词 | Deepwater Drilling Shallow Sediments Leak-off Mechanism Leak-off Pressure |
| DOI | 10.1007/s11802-018-3493-y |
| 产权排序 | 第1完成单位 ; 第2完成单位 |
| 文献子类 | Article |
| 英文摘要 | Deepwater sediments are prone to loss circulation in drilling due to a low overburden gradient. How to predict the magnitude of leak-off pressure more accurately is an important issue in the protection of drilling safety and the reduction of drilling cost in deep water. Starting from the mechanical properties of a shallow formation and based on the basic theory of rock-soil mechanics, the stress distribution around a borehole was analyzed. It was found that the rock or soil on a borehole is in the plastic yield state before the effective tensile stress is generated, and the effective tangential and vertical stresses increase as the drilling fluid density increases; thus, tensile failure will not occur on the borehole wall. Based on the results of stress calculation, two mechanisms and leak-off pressure prediction models for shallow sediments in deepwater drilling were put forward, and the calculated values of these models were compared with the measured value of shallow leak-off pressure in actual drilling. The results show that the MHPS (minimum horizontal principle stress) model and the FIF (fracturing in formation) model can predict the lower and upper limits of leak-off pressure. The PLC (permeable lost circulation) model can comprehensively analyze the factors influencing permeable leakage and provide a theoretical basis for leak-off prevention and plugging in deepwater drilling. |
| URL标识 | 查看原文 |
| WOS关键词 | WELLBORE ; MODEL |
| 语种 | 英语 |
| WOS记录号 | WOS:000419533800008 |
| 源URL | [http://ir.idsse.ac.cn/handle/183446/5258]  |
| 专题 | 深海科学研究部_深海地球物理与资源研究室 |
| 通讯作者 | Tan, Qiang; Tan, Qiang(China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China) |
| 作者单位 | 1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Key Lab Marine Georesources & Prospecting Hainan, Sanya 572000, Peoples R China 2.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Baohua,Liu, Wei,Sun, Jin,et al. Leak-off mechanism and pressure prediction for shallow sediments in deepwater drilling[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2018,17(1):65-71. |
| APA | Yu, Baohua,Liu, Wei,Sun, Jin,Deng, Jingen,Tan, Qiang,&Tan, Qiang.(2018).Leak-off mechanism and pressure prediction for shallow sediments in deepwater drilling.JOURNAL OF OCEAN UNIVERSITY OF CHINA,17(1),65-71. |
| MLA | Yu, Baohua,et al."Leak-off mechanism and pressure prediction for shallow sediments in deepwater drilling".JOURNAL OF OCEAN UNIVERSITY OF CHINA 17.1(2018):65-71. |
入库方式： OAI收割
来源：深海科学与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。