2013年1月1日 · The Ugnu sands, with 12 to 18 billion bbl original oil in place, account for about one half of the heavy-oil resource and are the focus of appraisal activity to determine development potential. Core description of the Ugnu identified 10 facies associations that represent fluvialdeltaic, floodplain, delta-front, and offshore environments.

1992年9月1日 · At reservoir temperature, the dead-oil viscosity varies from 100, 000 to 10, 000, 000 cp [100 to 10 000 Pa·s]. The paper provides reservoir and geological descriptions of the resource and discusses the key aspects affecting development.

The Ugnu consists of fine to medium-grained, unconsolidated sands with interbedded siltstone, mudstone, and coal that were deposited in fluvial and delta-plain environments. The oil in the Ugnu sands is bitumen and extra heavy crude with gravities between 8/sup 0/ and 12/sup 0/ API.

2025年3月28日 · The promising results of this study indicate significant potential for liquid-CO2 alternating LSW injection as an effective cEOR technique for Ugnu heavy oils. 关键词 Keywords: Ugnu; Heavy oil;...

1992年9月1日 · The Ugnu deposit, located on the North Slope of Alaska, contains more than 6 billion bbl (954 {times} 10 {sup 6} m {sup 3}) of oil in place (OIP) in the Kuparuk area. The oil has been biodegraded. At reservoir temperature, the dead-oil viscosity varies from 100,000 to 10,000,000 cp (100 to 10 000 Pa {center dot} s).

2025年2月1日 · Given the high viscosity of Ugnu heavy oil, which falls within the range of thousands of centipoise, a hybrid EOR technique is expected to be significantly effective for oil viscosity reduction and displacement of capillary-trapped oil.

The Ugnu reservoir sands are unconsolidated and immature; they are classified as feldspathic litharenites to litharenites. From X-ray diffraction (XRD) analyses, the sands typically contain 85% to 92% silica dioxide, 5% to 7% feldspars, and 5% to 7% clay minerals.

2013年8月12日 · The Ugnu formation contains the most viscous, biodegraded oils and standard production methods are ineffective. Heavy oils are viscoelastic fluids. Thus, it is critical that we understand the properties of the heavy oils we are trying to produce before the geophysical model and modeling plan can be completed.

Careful integration of log, core, and seismic data provided the basis for defining the reservoir architecture and depositional model. The primary reservoir zones are the Ugnu M sands that are subdivided into the M70, lower M80, and upper M80 subzones.

Completed objectives of this project included: 1. Developing a numerical reservoir simulation model for the Ugnu MB sand in the pilot area; 2. Evaluating the productivity of horizontal wells in the Ugnu MB sand; 3. Predicting ultimate oil recovery with waterflood and polymer flood; 4.