Factors affecting the water coning behavior in vertical and horizontal wells

• Autorzy: Salavatov T. Sh. , Suleymanov A. A. , Ghareeb A. , Mamedova Y. V.
• Konferencja: Geopetrol 2010 : nowe metody i technologie zagospodarowania złóż i wydobycia węglowodorów w warunkach lądowych i morskich : międzynarodowa konferencja naukowo-techniczna : Zakopane, 20--23.09.2010
• Języki publikacji: EN

Abstrakty

EN

Production from the well would create pressure gradients that tend to lower the gas-oil contact and elevate the water-oil contact in the immediate vicinity of the well. Counterbalancing these flow gradients is the tendency of the gas to remain above the oil zone because of its lower density and of the water to remain below the oil zone because of its higher density. These counterbalancing forces tend to deform the gas—oil and water—oil contacts into a bell shape forming what is called coning. Delaying the encroachment and production of gas and water are essentially the controlling factors in maximizing the field's ultimate oil recovery. Since coning can have an important influence on operations, recovery, and economics, it is the objective of this paper to develop a computer program for calculating the critical oil rate to avoid coning of unwanted fluids into production wells and to predict the behavior of water coning in vertical and horizontal wells. The effect of various reservoir and fluid parameters (horizontal permeability, vertical permeability, drainage radius, oil column thickness, oil viscosity, porosity, oil rate, etc.) on the coning behavior in vertical and horizontal wells was investigated extensively by varying the base case data.

Słowa kluczowe

EN

horizontal wells; water coning; drilling

PL

odwierty horyzontalne; zawodnienie; wiertnictwo

• Wydawca: Instytut Nafty i Gazu - Państwowy Instytut Badawczy
• Czasopismo: Prace Naukowe Instytutu Nafty i Gazu
• Rocznik: 2010
• Tom: nr 170 wyd. konferencyjne
• Strony: 845--849
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Salavatov T. Sh.

• Azerbaijan State Oil Academy

autor

Suleymanov A. A.

• Azerbaijan State Oil Academy

autor

Ghareeb A.

• Azerbaijan State Oil Academy

autor

Mamedova Y. V.

• Azerbaijan State Oil Academy

Bibliografia

• [1] Ansari R.Z., Johns R.T. — Steady-state coning solutions with multiple wells and reservoir boundaries. SPE paper 99896, 2006
• [2] Ahmed T.H — Reservoir engineering handbook. Gulf Publishing Co., Houston, Texas, 2000
• [3] Chaperon I. — Theoretical study of coning toward horizontal and vertical wells in anisotropic formations: subcritical and critical rates. SPE paper 15377,1986
• [4] Joshi S.D. — Augmentation of well productivity using slant and horizontal wells. J. of Petroleum Technology, June 1988
• [5] Sobocinski D.P., Cornelius A.J. — A correlation for predicting water coning time. JPT, May 1965
• [6] Papatzacos P., Herring T.U., Martinsen R., Skjaeveland S.M. — Cone breakthrough time for horizontal wells. SPE paper 19822,1989
• [7] Kuo C.T., Desbrisay C.L. — A simplified method for water coning predictions. SPE paper 12067, 1983