... subsurface uncertainty vito field development ultimate recovery artificial lift system development well staircase gas lift completion installation and operations reservoir characterization value driver offshore technology conference completion design capital efficiency Introduction...

...) the drilling fluid travels through deeper water columns, 2) the in-situ formation temperatures are higher, 3) depletion is observed, and 4) some combination of the three. During the drilling phase of a deepwater infill development well (Well A), downhole losses occurred 13 hours after well total depth (TD...

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.... Each is linked to different decisions which can be optimized given uncertainty is reduced. Compartmentalization directly affects the number of development wells, drive mechanism affects the need for injection, associated well count and facilities and initial rate directly affects facility size...

.... The abstract must contain conspicuous acknowledgment of OTC copyright. Abstract Pore pressure (PP) and fracture gradient (FG) predictions were prepared for Prelude development wells in the Browse Basin, offshore northwest Australia. The PP forecasts were based on resistivity- and sonic-based models calibrated...

... in the Silvertip Field. This paper will provide an overview of the current Great White Field WM12 reservoir development plan, will compare the results of the recent six development wells with the pre-drill predictive model, and the impact of the well results on our understanding of this frontier area, Paleogene...

... abundance, weak reservoir energy, and high oil viscosity (30-260mPa.s). Information obtained from early development wells revealed a different, yet much more complicated geological system than the geological model built from appraisal wells and used in the Overall Development Plan (ODP). By integrating...

...). Meanwhile, the second appraisal well was drilled and cored. In the beginning of 2008, a 4-month EWT was performed with a dynamic positioning FPSO in order to monitor the reservoir behavior before the final investment decision and prior to the drilling of the development wells. The EWT results were essential...

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... in February of 2006. Phase 1 drilling and completion operations concluded in the first half of 2007 with the completion of three additional development wells, the discovery well and two appraisal wells. Each well was designed for an anticipated well life of 20 to 25 years with maximum production rates...

... exploiting the essential of 4D information very early after the monitor acquisition. This key dynamic information has been used to constrain the reservoir model history match. The integration of 4D information has impacted fundamental decisions, like the drilling of a development well on a poorly drained...

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..., an apparent ceiling to high-amplitude anomalies within a regional sand- bearing interval was attributed to gas trapped at the base of the hydrate stability zone. The potential for hydrate-bearing sands is being considered during site selection of future appraisal and development wells. The geotechnical...

... and the checking of the reservoirs hydraulic compartmentalization, once the development wells were drilled. At the end of the Drilling Phase, the results are honouring the project initial assumptions. The Original Oil in Place as well as the productivity / injectivity indexes were confirmed. The reservoir pressure...

... Campos Basin. After having drilled a number of wells in water depths higher than 1000 meters, Petrobras has started in 1990 an extensive program to drill development wells in deepwater oilfields using both, DP and anchored rigs. Fig. 1 shows a schematic map of the Brazilian Coast and the distribution...

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... development wells were drilled and completed using 7" carbon steel tubing tapered to a 4" string from Chrome 13 material with a 7" carbon steel liner cemented and perforated in the reservoir section. Historical Workover. In 1997, seventeen years after the initial development drilling, five of the ten wells...

...) vessel. First Oil is planned for mid 2001. The base case reservoir development requires a total of 24 development wells plus flexibility to develop additional upside potential. Reservoir flexibility management requires waterflood and gas injection capability. The options of changing to water-alternating...