Managing reservoir surveillance in the Duri Steam Flood Field

Cross‐borehole seismic velocity and high‐frequency electromagnetic (EM) attenuation data were obtained to construct tomographic images of heavy oil sands in a steam‐flood environment. First‐arrival seismic data were used to construct a tomographic color image of a 10 m by 8 m vertical plane between the two boreholes. Two high‐frequency (17 and 15 MHz) EM transmission tomographs were constructed of a 20 m by 8 m vertical plane. The velocity tomograph clearly shows a shale layer with oil sands above it and below it. The EM tomographs show a more complex geology of oil sands with shale inclusions. The deepest EM tomograph shows the upper part of an active steam zone and suggests steam chanelling just below the shale layer. These results show the detailed structure of the entire plane between boreholes and may provide a better means to understand the process for in situ heavy oil recovery in a steam‐flood environment.

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Evaluation of Well Completions in the First Steam Flood Pilot Performed in an Unconsolidated Sandstone Reservoir in Kuwait

10.2118/193653-ms ◽

2018 ◽

Author(s):

Dharmesh Chandra Pandey ◽

Nayef Fadhel Al Shammari ◽

Aiydah Khaled Al-Dhafeeri ◽

Ahmad Al-Naqi ◽

Faisal Al- Arfan ◽

...

Keyword(s):

Steam Flood ◽

Sandstone Reservoir ◽

Well Completions

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Frac and Pack Completion Strategy in Duri Steam Flood (DSF) Field

10.2118/54267-ms ◽

1999 ◽

Cited By ~ 1

Author(s):

Mathias T. Satyagraha ◽

Amritzar Aimar

Keyword(s):

Steam Flood

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Mukhaizna Steam Injectors Thermal Efficiency & Insulated tubing Pilot Evaluation

10.2118/spe-172930-ms ◽

2015 ◽

Author(s):

Rashid Al Shaibi

Keyword(s):

Thermal Efficiency ◽

Outer Wall ◽

Heat Losses ◽

Oil Field ◽

Evaluation Methodology ◽

Base Line ◽

Field Observations ◽

Reference Base ◽

Steam Flood ◽

Deep Reservoir

Abstract Occidental operates a steam flood project in Mukhaizna which is a giant deep heavy oil field in south Oman. Wellbore heat losses from steam injectors is one of the challenges that degrades the steam flood thermal efficiency for a deep reservoir. In addition, wellbore heat losses increase the thermal stress on the casing and lead to wellbore damage. In aim to reduce wellbore heat losses, insulated tubing was introduced and a Pilot was carried out to select the optimum insulated tubing product in the market. Ten Injectors were instrumented and completed with insulated tubing from four different vendors in addition to two bare strings used as a reference base line. Data were collected and evaluated in eight months period. Field thermal conductivity was obtained for the tested products using DTS temperature data from the outermost casing, the Thermocouples data from the tubing outer wall and temperature logs during injection in aid of a calibrated wellbore model. The conducted analysis and the field observations were sufficient to resolve the thermal performance between the tested products. This paper describes the Pilot configuration and the evaluation methodology. Analysis output and field observations are summarized and presented in addition to the raw data collected from the instruments and temperature logs.

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