생산유전 시설에서의 파라핀 침전 영향요인 분석연구
Parametric Study on the Determinants Affecting Paraffin Deposition in Producing Oil Field Facilities
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
본 연구는 생산유전에서 다양한 시설 요인과 파라핀 침전 간의 상관성을 제시하였다. 파라핀 침전은 생산 중자주 발생하며, 이는 환경 및 운영조건에 따라 결정된다. 유동관 매설 깊이에 따른 연간 토양온도 변화 추이와의 상관성을 검토하였다. 그리고, 전산유체역학을 통해 인공채유 설비에서 발생한 유동 패턴의 물리적인 영향에 대해 요인평가를 수행하였다. PCP(Progressing Cavity Pump) 시스템에서 rod 주변은 스월(swirl) 유동이 발생하여 rod 표면에는파라핀이 침전이 잘되지 않는다. 또한, 내부 유속이 상승하면 벽면 전단응력의 증가로 점성하위층 두께가 감소하여튜빙 표면에 파라핀 침전량이 감소하는 것으로 나타났다. 생산유전 시설의 파라핀 침전 상황 판단 시, 해당 요인들을추가 고려한다면 더욱 정밀한 평가가 가능할 것으로 기대된다.
Abstract
In this study, possible relationships between various facility-based factors and paraffin deposition in oil fields are suggested. Paraffin deposition commonly occurs during production and is determined by the environmental and operating conditions. The relevance of changes in annual temperature with burial depth of pipeline was examined and a parametric study was performed with the physical effects of flow patterns generated by artificial lift being evaluated utilizing Computational Fluid Dynamics(CFD) simulation. Paraffin was difficult to deposit on the surface of the rod, owing to the swirling flow generated around the rod in the Progressing Cavity Pump(PCP) system. In addition, a decrease in paraffin deposition was seen on the tubing surface, with the viscous sub-layer thickness determined by the wall shear stress depending upon the inlet velocity. When estimating paraffin deposition in an oil field, it is expected that more accurate evaluations will be possible if the suggested factors are taken into consideration.
참고문헌 (19)
- ANSYS, Inc, "ANSYS FLUENT 14.0: User’s Guide", ANSYS, Inc, ~ (2011)
- Bern, P. A., "Wax deposition in crude oil pipelines, european offshore technology conference and exhibition", Society of Petroleum Engineers, pp.8~ (1980)
- Burger, E. D., "Studies of wax deposition in the trans alaska pipeline", J. Pet. Technol, 33(6), pp.1075~1086 (1981)
- Cheng, Q. L., "The study on temperature field variation and phase transition law after shutdown of buried waxy crude oil pipeline", Case Stud. Therm. Eng, 10, pp.443~454 (2017)
- Clegg, J. D., "Petroleum engineering handbook, Vol.4 production operations engineering", pp.757~ (2007), Society of Petroleum Engineers
- Deglon, D. A., "CFD Modelling of stirred tanks : numerical considerations", Miner. Eng, 19(10), pp.1059~1068 (2006)
- Dong, X., "Non-newtonian flow characterization of heavy crude oil in porous media", J. Pet. Explor. Prod. Technol, 3(1), pp.43~53 (2013)
- El-Dalatony, M. M., "Occurrence and characterization of paraffin wax formed in developing wells and pipelines", Energies, 12, pp.967~ (2019)
- Giancarlo, G., "Pipeline wax deposition modeling : a sensitivity study on two commercial software", Pet, 5(2), pp.206~213 (2019)
- Holder, G. A., "Wax crystallization from distillate fuels: I. cloud and pour phenomena exhibited by solutions of binary n-paraffin mixtures", J. Inst. Pet, 51, pp.228~ (1965)
- 임종세, "해저 석유생산시스템에서 유동안정성 확보를 위한 왁스집적 제어기술", 한국자원공학회지, 50(2), pp.278~296 (2013), 한국자원공학회
- Liyana Nadirah, M. S., "Rheological study of petroleum fluid and oil-in-water emulsion", Int. J. Eng. Sci. Technol, 3(1), pp.129~134 (2014)
- Mandal, A., "Evaludation of synthesized polymeric additives as paraffin inhibitors for wax dissolution in the petroleum reservoir rock", J. Pet. Sci. Eng, 177, pp.250~260 (2019)
- Marquez, J. M. A., "Ground thermal diffusivity calculation by direct soil temperature measurement. application to very low enthalpy geothermal energy systems", Sens, 16(3), pp.306~ (2016)
- Munson, B. R., "Fundamentals of Fluid Mechanics", pp.792~ (2013), Wiley
- Sanks, R. L., "Pumping Station Design", pp.307~310 (1998), Butterworth-Heinemann
- Singh, P., "Formation and aging of incipient thin film wax-oil gels", AIChE J, 46(5), pp.1059~1074 (2000)
- Singh, P., "Morphological evolution of thick wax deposits during aging", AIChE J, 47(1), pp.6~18 (2001)
- Sousa, A. L., "Preventing and removing wax deposition inside vertical wells", J. Pet. Explor. Prod. Technol, 9, pp.2091~2107 (2019)