Reducing the risk and residual errors by uncertainty analysis of depth conversion in Nasiriya Oil Field, Iraq

Al-Khazraji, Omar N. A.; Al-Karadaghi, Salar S. H.

doi:10.1007/s12517-020-05479-4

Cited by 4 publications

(1 citation statement)

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“…Depth information for the desired targets was obtained from reflection time Information (Two Way Time or TWT) at target horizon levels (Table-2). The lower Cretaceous Yamama Formation is a massive but heterogeneous carbonate reservoir with an average gross thickness of over 200 m [27]. This formation consists of limestone, vugular and sometimes recrystallized, intercalated by shale or marl laminations, separating the formation into different reservoir quality and hydraulic carbonate units (Figure 4).…”

Section: Resultsmentioning

confidence: 99%

Acquisition and Preparation of 3D Seismic Data for Pre-Stack Inversion at Siba Oilfield, Southeastern Iraq

Abed

Idan

2022

eijs

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The current study includes preparing a geometric proposal of the main parameters that must be worked within a seismic reflection survey to prepare a three-dimensional subsurface image. This image represents the Siba oil field located in Basra, southern Iraq. The results were based on two options for selecting these approved elements to create a three-dimensional image of the Mishrif, Zubair and Yamama formations as well as the Jurassic and Permian Khuff and the pre-Khuff reservoir area. The first option is represented in the geometry in option -1 is 12 lines, 6 shots, and 216 chs. The receiver density is 66.67 receivers / km2, so the shot density is the same. Total shots are 21000, which is the same number of receiving points. The survey area (in km2) and full fold area (in km2) are 317and 328, respectively. However, the second option in the geometry are16 lines, 16 shots, and 208 chs. Receiver density and shot density are 50, while the total shots are 16200 and the total receiving points are 16000; with survey area and full folded area are 198 and 198 km2. The aim of the current study is to characterize the structure and reservoir quality of Yamama and Zubair intervals and to image potential exploration targets such as the Mishrif, Jurassic, Permian Kuff and Pre Khuff formations. The present study succeeded in preparing the geometric proposal and getting at a subsurface image of the reservoir in three dimensions.

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Section: Resultsmentioning

confidence: 99%