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A New Strategy Explores Tight Oil/Gas Reservoirs: Fit-for-Purpose Acid Fracturing

As oil companies have moved to more-marginal reservoir targets, application of conventional techniques has often yielded disappointing results, and tighter zones are often abandoned for more-promising target intervals. Marginal reservoirs may require horizontal-well drilling or multiple-stage hydraulic fracturing to achieve economic production targets. In an effort to reduce risks and costs associated with these alternative processes, a new stimulation strategy has been adopted for tight intervals using vertical wells before going to horizontal wells.

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There are tens of undeveloped reservoirs and even undiscovered plays/prospects in the area of this study (Abu Dhabi). These new plays and undeveloped reservoirs contain huge quantities of stock-tank oil initially in place (STOIIP). Most of these reservoirs are still in the appraisal phase, and tremendous efforts are required to bring the best reservoirs to the top of the development portfolio. The decision to transfer a single reservoir from appraisal to development mostly depends on STOIIP ranking, which in turn takes into account the following factors.

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 164778, “A New Strategy To Explore Tight Oil/Gas Reservoirs: Fit-for-Purpose Acid Fracturing,” by G.M. Hegazy, SPE, and Adel M. Salem, American University in Cairo and Suez University; Shedid A. Shedid, British University in Egypt; Shouhdi E. Shalaby, Suez University; and J. Abbott, Schlumberger, prepared for the 2013 North Africa Technical Conference and Exhibition, Cairo, 15–17 April. The paper has not been peer reviewed.
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A New Strategy Explores Tight Oil/Gas Reservoirs: Fit-for-Purpose Acid Fracturing

01 June 2013

Volume: 65 | Issue: 6

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