Retraction Note to: Depositional environments and porosity distribution in regressive limestone reservoirs of the Mishrif Formation, Southern Iraq

Al-Dabbas, Moutaz A.; Al-Jassim, Jassim A.; Al-Jumaily, Saad

doi:10.1007/s12517-017-2970-8

Cited by 3 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Zubair field, Mishrif Formation is made of gray dense algal limestone with shelly foraminiferal limestone rich in rudist debris at the bottom and gastropods to shell fragments at the top [18]. Stratigraphically, Mishrif Formation presents a regressive sequence (Figure 3 Formation varies dramatically through the Mesopotamian Basin with 350 -400 m in SE boundary (270 m Zubair field) and pinches out towards the West and SW [19].…”

Section: Geological Settingmentioning

confidence: 99%

Well Log Petrophysics of the Cretaceous Pay Zones in Zubair Field, Basrah, South Iraq

Abdulaziz¹,

Dahab²,

Najmuddin³

2017

OJG

View full text Add to dashboard Cite

Discovered in 1949 with a rate of (195,000) bbl/day from pay zones in Mishrif and Zubair Formation, the expected production of Zubair field is anticipated to be 1125 million bbl/day. Despite this production history, there is a major deficiency in detailed petrophysical analysis of the producing zones. In the present study well log data of 7 wells, selected from numerous wells, are investigated in details to examine the reservoir properties and characterize the reservoir architecture. The petrophysical analysis of Mishrif Formation indicated two or three pay zones. Lithologically, all zones of Mishrif Formation are dominantly clean limestone to dolomitic limestone with zone 2 and 3 reporting higher dolomitic content (20% to 40%) compared to zone 1 (6% to 13%). Mishrif pay zones indicated a relatively good porosity (18% -24%) with zone 2 predominant in secondary porosity associating dolomitization processes. In Zubair Formation one pay zone is identified but locally could separate into two zones. The clay content is generally low with average content between 2% and 3% while the average porosity showed slightly better values in zone 1 (~0.20) compared to average porosity of zone 2 (0.17) that is rich in silt content associating deposition at a relatively deeper parts of the shelf. The average water saturation shows distinct lower values that vary between 15% and 18.7%. The petrophysical results are statistically analyzed and property histograms and crossplots are constructed to investigate mutual relationships. Such analysis is essential for understanding the reservoir architecture and calculations of reservoir capacity for future development.

show abstract

Section: Geological Settingmentioning

confidence: 99%

Well Log Petrophysics of the Cretaceous Pay Zones in Zubair Field, Basrah, South Iraq

Abdulaziz¹,

Dahab²,

Najmuddin³

2017

OJG

View full text Add to dashboard Cite

show abstract

Co-training Semi-supervised Learning Algorithm for Classification of Seismic Facies of Carbonate Tidal Channels

Wang

Yang

et al. 2022

Proceedings of the International Field Exploration and Development Conference 2021

View full text Add to dashboard Cite

Interpretation of 3D Seismic Reflection Data to Reveal Stratigraphic Setting of the Reservoir of Mishrif Formation in Dujaila Oil Field, Southeast of Iraq

Khawaja

Thabit

2021

eijs

View full text Add to dashboard Cite

This research is an attempt to solve the ambiguity associated with the stratigraphic setting of the main reservoir (late Cretaceous) of Mishrif Formation in Dujaila oil field. This was achieved by studying a 3D seismic reflection post-stack data for an area of 602.62 Km2 in Maysan Governorate, southeast of Iraq. Seismic analysis of the true amplitude reflections, time maps, and 3D depositional models showed a sufficient seismic evidence that the Mishrif Formation produces oil from a stratigraphic trap of isolated reef carbonate buildups that were grown on the shelf edge of the carbonate platform, located in the area around the productive well Dujaila-1. The low-frequency attribute illustrated that it is restricted in the area around the productive well Dujaila-1, which confirmed the existence of reef porous carbonate buildups and hydrocarbon accumulation in this region. The pay zone of the reef mound trap extends for about 7 km from the well Dujaila-1 toward the southwest side and 4 km toward the well Dujaila-2, without reaching it, which is explaining why it was dry. Therefore, this area to the south of the productive well Dujaila-1 represents a good area for low-risk drilling. Consequently, the hydrocarbon system observed in the Dujaila oil field provides a new opportunity to explore and produce oil in Mishrif Formation in other areas on the flank of the productive structures and in flat areas situated on the belt of the carbonate platform edge.

show abstract

Retraction Note to: Depositional environments and porosity distribution in regressive limestone reservoirs of the Mishrif Formation, Southern Iraq

Cited by 3 publications

References 14 publications

Well Log Petrophysics of the Cretaceous Pay Zones in Zubair Field, Basrah, South Iraq

Well Log Petrophysics of the Cretaceous Pay Zones in Zubair Field, Basrah, South Iraq

Co-training Semi-supervised Learning Algorithm for Classification of Seismic Facies of Carbonate Tidal Channels

Interpretation of 3D Seismic Reflection Data to Reveal Stratigraphic Setting of the Reservoir of Mishrif Formation in Dujaila Oil Field, Southeast of Iraq

Contact Info

Product

Resources

About