Journal issues: 2/2001
DEVELOPMENT OF DESIGN CRITERIA FOR WELL COMPLETION IN HORIZONTAL WELLS
A well constructed horizontal production well can assure the most advantageous flowing conditions when the fluid content of the yield gas is not separated to a considerable extent in the environment of the bore bottom. However, in case of wells producing a high gas- fluid ratio, the intensive separation of fluid and gas in the horizontal section may cause failures of the well structure. For the time being, there is a serious uncertainty concerning hole gripping, system pressure and the effect of well structure influencing flow conditions. The clarification of effects influencing the flow conditions in a horizontal well section could be an important step in preventing the expected production problems, as well as from the point of view of the construction of a suitable well structure. The present study reports on a series of tests for investigating the mixed flow of gas and fluid in a horizontal well section. Conditions of the design and development of the investigation equipment are presented. In the following, the analysis of horizontal well sections is proposed to be a factor to be considered in well design. During the investigation, flow diagrams have been made to analyze the impact of the casing liner – producing pipe on the flow chart.
- Szepesi, J.: Termelocso rakatok hosszvaltozasai a koolaj - es gazkutakban “Packer forces and tubing movements in oil and gas production wells”. Banyaszati es Kohaszati Lapok. Koolaj es Foldgaz 5 /105/ 1972. 2. 336-338
- Butlin, D.M.: Artificial lift in horizontal wells. Conference on Horizontal Well Technology, Houston, Texas, 1990 Oct.
- Federer, I.: Two-phase flow in horizontal wells. Internal note. Institut Francais du Petrole, Paris 1991.
- Milne-Thomson, L.M.: Theoretical hydrodynamics, MacMillian, New York /1968/
- Kordyban, E.S.-Ranov, T.: Mechanism of slug formation in horizontal two-phase flow. ASME Journal of Basic Engineering. Vo. 92, p. 857. 1970.
- Taitel, Y.-Dukler, A.E.: A model for predicting flow regimes transitions in horizontal and near-horizontal gas-liquid flow. AICHE J. Vol. 22. No. 1.p.47,1976.
- Barnea, D. - Shoham Ovadia - Taitel, Y.: Flow pattern transition for vertical downward inclined two-phase flow; Horizontal to vertical. Chem.Eng.Sci. 37.No. 5 735-740, 1982.
- El-Oun, Z.: Gas-Liquid two-phase flow in pipelines. SPE 20645 65th Annual Technical Conference, New Orleans, Sept. 1990.
- Scott, S.L. - Kouba, G.E.: Advances in slug flow characterization for horizontal and slightly inclined pipes. SPE 20628 /1990/
- Islam, M.R. - Chakma, A.: Comprehensive physical and numerical modeling of a horizontal well. SPE 20627 /1990/
- Courteville, J. - Grouvel, J.M. - Roux, A. - Lagiere, M.: Rev. Institut Francais du Petrole. Vol. 38, No. 2, pp. 41-49, March - April 1983.
- Madhane, J.M. - Gregory, - Aziz K.: A flow pattern map for gas - liquid flow in horizontal pipes. Int. J. Multi-Phase Flow, Vol. 1,p. 537-533, 1974.