الفهرس | Only 14 pages are availabe for public view |
Abstract The southern part of the Gulf of Suez contains all elements of entrapment (source rock, reservoir and cap rock) to be one the most prolific hydrocarbon generation zone especially in Kareem, Nukhul and Pre-Miocene Formations. The southern part of Gulf of Suez is one of the important areas for evaluation and study, to explore the hydrocarbon migration locations. We have focused the evaluation and study in South Ramadan field as a case study in the south part of the Gulf of Suez due to the following reasons: a) South Ramadan Concession field is located offshore in the Southern part of the Gulf of Suez-Egypt. b) It is 15 km. to the East-Northeast of ”Ras Gharib City” and about 15 km. to the northeast of Ras Shukheir Field Base. c) In general it is located in the most prolific part of the Gulf of Suez. It is surrounded from the north by Ramadan, from the east by El-Morgan, from the south by LL87 and from the west by ESMA/LL87 Development fields. In the present study for the South Ramadan field the surface beneath salt cover, this is lead to several problems due to masking the subsurface layers, conjugated zones cause several deviations in fault pattern, dip direction and amount in addition the field suffer from old and poor 2D seismic data. The traditional interpretation for the old 2D seismic data creates untrustworthy maps as it cannot reveal the picture beneath the salt section additionally not accurate due to multiples and ringing affected on the seismic data. iii The purpose of the study is to solve these problems by using new seismic data in the depth domain to construct new accurate structural maps tight with regional geological data, By interpreting magnetic data that cover the area of study, to make a regional evaluation for the main faults that influence on the structure setting of the field. Moreover revised from stratigraphy point of view, and identify the hydrocarbon potentialities area to integrate the data in 3D Static model represent the subsurface layers from structure and the reservoir characterization point of views. So; we use new vintage of 3D seismic data migrated in the depth domain to introduce new interpretation and create new seismic attributes, as the seismic imaging in depth domain is the most powerful tool in delineating the surface zones beneath the salt bulge cover the field area. Using all available well data and seismic data, besides that utilized the advantage of software facilities of (Geological and Geophysical studies with integration of advanced software for 3D static model), and previous studies contribute to understand some points. Using charisma® and Petrel® software gave a great support to achieve the study and minimize a lot of the previous problems, in addition to new modern technology for analysis of every piece of data has been applied to make use of the integration between the seismic data and well data. After solving these problems, accurate maps for stratigraphic, structural and hydrocarbon potentialities of South Ramadan oil field have been established honoring the seismic and well data tight with iv regional geology. These accurate results have been inputted in building 3D static model which represents the most mature phase, to correlate and confirm the results in order to detect the best area to be drilled. The final results show excellent progress in the area development plan from technical and economic points of view, as it shows new attribute technique to enhance the subsurface image and help to identify structure features and depositional environments, Seismic interpretation and mapping indicate that the structure of South Ramadan Field represent a typical rift structural setting within the transfer zone between two major rift segments with different regional dip regimes. This transfer is located between the southern Gulf of Suez structural province with regional southwest dip regime and the central structural province with regional northeast dip regime, which are consequently have opposite directions of fault throws northeast and southwest directions respectively. It classified as conjugate zone and characterized by gentler structural dip of Miocene and Pre-Miocene Formations as a result of the competition between the two different regional dip regimes. 3D Static model is an integrated procedures for 3 dimensional static modeling and visualization of the reservoir starting from input of seismic and well logging data until output of an upscale geological model for export to reservoir simulator, these procedure involved two main stages which are structure framework and petrophysical modeling. Well proposals had been introduced to detect and identify the valuable blocks to explore and developed to add significant potential to the field reserve. |