Dissertation > Excellent graduate degree dissertation topics show

The Research of the Viscoelastic Fluid Flow in the Technology of Polymer-flooding Wells

Author: WuZuo
Tutor: YangShuRen；WangJian
School: Daqing Petroleum Institute
Course: Oil and Gas Storage and Transportation Engineering
Keywords: viscoelastic fluid eccentric annulus polymer injection pipelines eccentric wear vibration
CLC: TE357.4
Type: Master's thesis
Year: 2008
Downloads: 53
Quote: 0
Read: Download Dissertation

Abstract


In recent years, the technology of polymer-flooding wells as an important pillor for increasing the yeild in daqing oil filed, has increased oil recovery by more than 12% on the basis of water-flooding. While gaining the huge enormous benefits, there are two urgent problems as the follows which must be resolved in the technology of polymer-flooding wells. First, the eccentric wear of the sucker rods aggravates, and the probability of rod broken and wells opeating increases. Second, the vibrating of polymer injection pipelines aggravates, the period of examining pumps and the life span of the sucker rods shortens, and pump efficiency declines. Adopting common conversion Oldroyd-Maxwell constitutive equation in this paper, the flow equation of the unsteady flow of viscoelastic fluid in the eccentric annulus and polymer injection pipelines was established, the initial conditions and boundary conditions were given, and the flow field and stress field of vescoelastic were obtained by numerical solution. By studying polymer solution in eccentric annulus and polymer injection pipeline in the viscoelastic flow pattern obtained: in the eccentric annulus, the greater eccentricity, the greater asymmetry in the flow filed and the normal force, a joint force of the normal force—radial force also increased. The easier it is to have an eccentric wear.At the same time, the main reason for the polymer injection pipelines vibrating is also the normal force. According to the above theory, measures of centralizing the sucker rods in to prevent eccentric wear have been applied in polymer-flooding wells and significantly reduced the eccentric wear. Proposing the transformation of three-round rectangular structure for the ground pipeline, this provided a theroetical and practical basis for the preventing and rectificating of pipeline vibration, and achieved substantial economic benefits.

Related Dissertations

  1. Study on Theory and Experiment of Wire Drawing with Composite Ultrasonic Vibration,TG663
  2. Research on the 6-Dof Fault Tolerant Control of the Vibration Isolation Platform with Eight Actuators,TB535.1
  3. The Basic Study on Semi-active Control of Damping Controlled to Serial Robot,TB535.1
  4. Analysis and application of large structure vibration test based on wireless sensor networks,TP274
  5. Vibrating force field mixed mechanism of plastic extrusion process,TQ320.66
  6. Vibration Isolation Design of Powertrain Mounting System of a Commercial Vehicle,U463.33
  7. Study on Unsteady Flow Caused by Non-axisymmetric Tip-clearance in Turbine,TK261
  8. DC bias magnetic transformer,TM401
  9. Inorganic Salt Solution as a Phase Change Material and Its Application in Thermal Storage System,TB34
  10. Study on Intelligent Optimization of Deep-hole Blasting Parameters and the Control of Blasting Effects,TD235.33
  11. Suspension vibration cone concentrator sorting iron ore tailings DAHONGSHAN shaker Study,TD951
  12. Baogang Cold Plate Leveler Main Drive System Torsional Vibration and Strength Analysis Model,TG333.23
  13. Research on Residual Stresses in Ultrasonic Vibration Assisted Micro-milling,TG54
  14. Research on Vibration Fatigue of Stiffened Aluminum Alloy Panel,O346.1
  15. Open pit blasting vibration intensity physical analysis and time-frequency characteristics of,O382
  16. Hydrogen AlN and ZnO-based diluted magnetic semiconductor materials First-principles study,O471
  17. Structure Strength and Fatigue Analysis for Aged Jack-up,P752
  18. The Analysis of Higher-order Overtone Vibrations of Quartz Crystal Plates with the Consideration of Piezoelectric Effect,TN629.1
  19. Deep sub-micron particles of photoresist residues,TN405
  20. The Study on the Magnetoelectric Vibration Velocity Sensor Low-frequency Characteristic Compensation,TP212
  21. The Wind Performance Research of the Large Span Beam String Structure,TU399

CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Production Engineering > Enhanced oil recovery and maintain reservoir pressure (secondary and tertiary oil recovery ) > Thermal, miscible , Chemical Oil Recovery (EOR EOR )
© 2012 www.DissertationTopic.Net  Mobile