03625nmc a2200193 4500 20260522175533.0 260224s xxu Rachid Haro, Raul 45358 Cavazzoli, Gustavo 39917 Vacas, Patricio 45359 Congreso de Producción del Bicentenario (1er. : 2010 mayo 18 al 21 : Salta) 44754 Multifractured horizontal wells change the economic equation in Argentina through improved reservoir contact, well productivity and operational efficiency 11/04/2011 ; 11/04/2011 9 p. Transcripción del resumen del autor. Operating companies are continuously trying to improve hydrocarbon recovery, and horizontal drilling has been a tool to get to this target. Horizontal well technology has evolved to a point at which, in most instances, horizontal wells are advantageous and favored over vertical and deviated wells. Horizontal wells can be drilled and completed at comparable costs to vertical wells while offering the advantage of higher production rates and better access to reserves. Often fewer horizontal wells are required to develop a field given the larger drainage area of horizontal drilling. However, when results do not match expectations, or a "surprise" is found, horizontal drilling leaves little alternative for stimulation, water shutoff treatments or workover intervention in general. Many horizontal wells in the world are completed open hole or, worse, with slotted or pre-perforated liners with no choices for production or treatment. Argentina hasn't escaped to the general industry trend of finding reserves in ever challenging environments. Complex geology and low permeability are the common denominator in today's environment. Developing reserves under these conditions with conventional vertical wells is in most cases uneconomical. In this setting, horizontal wells have come to mitigate the problem, however in most unfavorable conditions where oil and gas are found in tight formations fracture stimulation needs to be added to the equation. Conventional multistage fracturing techniques including perforating, fracture stimulating and isolating stages with a composite bridge plug have been applied in some cases with limited success. The time consumed in the completion operations extends over weeks making wells uneconomical. In addition, the prolonged time over which the frac fluid remains in the formation before being flowed back often affects well productivity. This paper describes the experience of the implementation of more than 10 new completion systems to overcome the time consuming and productivity limitations of conventional completions described above. The new completion system is run as part of the production liner, does not require cementing and provides positive mechanical diversion at specified intervals, so fracturing and stimulations can be pumped effectively to their targeted zone. The system has also been designed, so all of the fracturing or stimulation treatments along the horizontal wellbore can be pumped in one continuous operation, thus minimizing the associated risks and optimizing the efficiencies of both the personnel and equipment needed to perform the work. The conclusions will show the operational efficiencies and reliability of this novel completion system, as well as analyze the cost benefits and production increases that have been observed. https://biblioteca.iapg.org.ar/ArchivosAdjuntos/CongresoProdBicentenario2010/Multifractured.pdf CONGTP ddc 174681 174681 0 0 0 0 242500 CDIAPG CDIAPG 2026-03-05 200052703 0 200052703 2026-03-05 16:12:04 2026-03-05 ARCHIVO