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Productivity and Injectivity of Horizontal Wells.

DE2002751965

Publication Date	2000
Personal Author	Aziz, K.
Page Count	50
Abstract	One of the key issues addressed by our group was pressure drop in long horizontal wells and its influence on well performance. Very little information is available in the literature on flow in pipes with influx through pipe walls. Virtually all of this work has been in small diameter pipes and with single-phase-flow. In order to address this problem new experimental data on flow in horizontal and near horizontal wells have been obtained. Experiments were conducted at an industrial facility on typical 6 1/8 ID, 100 feet long horizontal well model. Our new data along with available information in the literature have been used to develop new correlations arid mechanistic models. Thus it is now possible to predict within reasonable accuracy, the effect of influx through the well on pressure drop in the well. New ways of coupling reservoirs with non-conventional wells have been developed. These techniques can be used both for analytical and numerical reservoir treatment. We have demonstrated the use of these new models for predicting well productivity index, well index for simulation, well to well interference and optimum well length. A preliminary version of a new numerical model (reservoir simulator) has also been developed. This simulator allows the use of flexible grids with further developments, this approach will lead to much greater reliability of non-conventional well predictions than is possible with currently available commercial simulators.
Keywords	Productivity Waterflooding Oil wells Directional drilling Enhanced recovery Mathematical models Permeability Correlation Reservoirs Progress reports Simulation
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Department of Energy, Tulsa, OK. National Petroleum Technology Office.; Department of Energy, Washington, DC. Office of Fossil Energy.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC. Office of Fossil Energy.
Document Type	Technical Report
NTIS Issue Number	200213
Contract Number	FG22-93BC14862

Productivity and Injectivity of Horizontal Wells.

Productivity and Injectivity of Horizontal Wells.
DE2002751965

Publication Date	2000
Personal Author	Aziz, K.
Page Count	50
Abstract	One of the key issues addressed by our group was pressure drop in long horizontal wells and its influence on well performance. Very little information is available in the literature on flow in pipes with influx through pipe walls. Virtually all of this work has been in small diameter pipes and with single-phase-flow. In order to address this problem new experimental data on flow in horizontal and near horizontal wells have been obtained. Experiments were conducted at an industrial facility on typical 6 1/8 ID, 100 feet long horizontal well model. Our new data along with available information in the literature have been used to develop new correlations arid mechanistic models. Thus it is now possible to predict within reasonable accuracy, the effect of influx through the well on pressure drop in the well. New ways of coupling reservoirs with non-conventional wells have been developed. These techniques can be used both for analytical and numerical reservoir treatment. We have demonstrated the use of these new models for predicting well productivity index, well index for simulation, well to well interference and optimum well length. A preliminary version of a new numerical model (reservoir simulator) has also been developed. This simulator allows the use of flexible grids with further developments, this approach will lead to much greater reliability of non-conventional well predictions than is possible with currently available commercial simulators.
Keywords	Productivity Waterflooding Oil wells Directional drilling Enhanced recovery Mathematical models Permeability Correlation Reservoirs Progress reports Simulation
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Department of Energy, Tulsa, OK. National Petroleum Technology Office.; Department of Energy, Washington, DC. Office of Fossil Energy.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC. Office of Fossil Energy.
Document Type	Technical Report
NTIS Issue Number	200213
Contract Number	FG22-93BC14862