Earticle

초록

영어

With the development of drilling technology and the needs of the larger Bulit-up, the screw drill with larger structure corner is used more widely in drilling field. Because the existence of single curved screw drill tool with larger structure corner, it have larger friction during the bend PDM in the process of internal casing, so we often need to use the wellhead adjuvant into the well. In order to understand the single bent screw drill into the state in the wellhead diameter of casing, and how the angle of screw structure impact the feasibility, This paper analysis the stress of the single curved screw drilling tools in the well, and the condition it can safely through the mouth of the well conditions, establish the single bend PDM in the calculation wellhead down model. and the finite element model is established combined with the specific parameters of a well which is in the western of SiChuan depression. Using ansys analysis a particular casing inside diameter, under wellhead vertical segment into different structure when the turn of the screw drilling tools down into characteristics and stress distribution characteristics, it is concluded how large of the structure corners and how depth that the bend PDM can rely on gravity well down into the inside diameter of 250.19 mm casing, concluded the relationship between reaction force, friction force, and maximum stress with the well depth and the change of structure corners from 1.5°to 2.75°，provide a basis for drilling site selection of the appropriate combinations of screw drill and how to regulate the radial force of the device while into the well.

목차

Abstract
 1. Introduction
 2. Geometric Structure of Single Curved Screw Assembly
 3. Basic Assumption
 4. Analysis the Down into Process of the BHA
 5. The Finite Element Model of Assembly
 6. The Location of the Critical Point
 7. Conditions for the BHA down into Casing
  7.1. Friction
  7.2. Condition for Maximum Stress of BHA
  7.3. Geometrical Condition
  7.4. Conditions for Contact Force
 8. Results and Discussion
  8.1. The Distribution of Radial Thrust
  8.2. The Tripability Analysis of the Different Structure Corners
 9. Summary and Conclusion
 Acknowledgment
 References

키워드

저자

• Xia Chengyu [ Department of Mechanical Engineering, Yangtze University, Jinzhou, Hubei, China ]
• Sun Qiaolei [ Department of Mechanical Engineering, Yangtze University, Jinzhou, Hubei, China ]
• Feng Ding [ Department of Mechanical Engineering, Yangtze University, Jinzhou, Hubei, China ] Corresponding author
• Chen Min [ Department of Mechanical Engineering, Yangtze University, Jinzhou, Hubei, China ]
• Huang Kai [ Department of Mechanical Engineering, Yangtze University, Jinzhou, Hubei, China ]
• Tu Yiliu [ Department of Mechanical Engineering, Yangtze University, Jinzhou, Hubei, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Multimedia and Ubiquitous Engineering

• 간기

  월간

• pISSN

  1975-0080

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605