Dissertation > Excellent graduate degree dissertation topics show

Study on Offshore Reverse Circulation MPD Technology Using Dual Concentric Strings

Author: ShangZhanKui
Tutor: SunBaoJiang
School: China University of Petroleum
Course: Design and manufacture of ships and marine structures
Keywords: Offshore drilling Dual concentric string Reverse circulation drilling MPD
CLC: TE52
Type: Master's thesis
Year: 2011
Downloads: 90
Quote: 0
Read: Download Dissertation

Abstract


Due to shortage of oil and gas resources and cutbacks of many maturing oil-fields, the supply of crude oil and gas can’t meet the demands of national economy development. Oil and gas exploration and development will focus on offshore. However, offshore drilling is a daunting task. The precise downhole pressure control to keep the wellbore safe, exerting hydraulic weight on bit in extended reach drilling, the high day-rate of the floating rig, so a advanced offshore drilling method is needed to answer these challenges of offshore drilling.A new drilling method called "Deep-water Reverse Circulation MPD" is introdued which uses dual concentric strings. The closed circulation system can makes the pressure control more precisely. The piston attached on drilling string can exert sufficient hydraulic WOB. The expansion liner drilling and the well cleaning devices can extend the ERD’s range.The technique features and the advantages of this drilling method are summarized. On this basis, the structure of some relevant key equipments are designed, which include the top injecter, the flow switcher, the automatic non-return valve and the manul controll non-return valve.The well temperature field model and wellbore pressure field model are established based on the the principle of energy and momentum conversation. The method to calculate the parameters of pressure loss and temperature is summarized, The circulation rate selection of this method is based on the hole cleaning and stabilization of wellbore.By analyzing the pressure control methods, it is found that to adjust the back pressure first, and change the circulation rate next.

Related Dissertations

  1. Marine gas hydrate formation drilling polyol drilling fluid system of,P744.4
  2. Cloning of Mpd Gene from Rhodococcus Rhodochrous Degrading Organophosphorus Pesticide Chlorpyrifos,X172
  3. Research on the Reasonable Gas Injection Parameters of the Counter-circulation Drilling,TE242
  4. Research on Algorithms of Generating Virtual Landscape and the Design of Simulating Platform,TP391.9
  5. Research on Reverse Circulation Down-the-hole Hammer Drilling with Casing Technology,P634
  6. The Basic Study of MPD’s Effects on Coronary Artery Disease,R259.4
  7. The Study of JAK2 Gene Mutation and Its Clinical Significance in Polycythaemia Vera,R55
  8. Research about Drilling Techniques of 130m Depth Drill Hole Grouting Pile of the Yellow Rriver Bridge at Qingdao to Yinchuan Highway,U445.551
  9. The Analysis and Research in Ocean Drilling Platform Distributed MIS,TP315
  10. Offshore drilling platforms dimensional cutting parts nesting technology research,TP391.72
  11. Legal Attribute of offshore drilling platforms,D996.19
  12. Establishment and Application of the New Expression and Genetic Manipulation System in Bacillus Subtilis,Q78
  13. Deletion of DCC Gene Promotes Malignant Transformation of Hemopoietic Cells with Positive P230~(Bcr/Abl) Expression,R363
  14. Reaserch on the Characteristics of Marine Engineering Geology and the Depth of Pile Penetration in Caofeidian Shoal,P752
  15. Clinic Study on Expression of JAK2 and MPL Mutations in Patients with Chronic Myeloproliferative Diseases,R551.3
  16. Study on Disposal and Long-distance Conveying of Drill Cuttings on Drilling Platform,X741
  17. Process Evaluation on Technology of Using Impulse Heat Lustrate Removing Oil from Offshore Drilling Cuttings and Study on Impulse Pipe Syringe,TE357
  18. The Study of Mobile Offshore Drilling Units Insurance,F840.6
  19. Economic Risk Evaluation and Financing Analysis for the Purchase of Deep-Water Drilling Rigs,P75
  20. The Legal Research on Mobile Offshore Drilling Platforms Insurance,D922.284

CLC: > Industrial Technology > Oil and gas industry > Offshore oil and gas exploration and development > Offshore oil and gas drilling engineering
© 2012 www.DissertationTopic.Net  Mobile