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Abstract One of the most important problems facing reservoir management and additional development in depleted fields is the estimation of the Productivity Index for non-flowing wells. Belayim Marine field is the first offshore field discovered in Egypt in 1961.Kareem-Rudeis Formation has been producing since Feb.1962 and represents about 65﹪ of Belayim Marine production with cumulative oil production reached to about 1439 MMSTB and the current oil production rate is 16,000 STB/D. By using the available old relationship derived from core data - assume water wet reservoir - it was observed that the calculated productivity index values deviate from actual values calculated using different methods (down hole sensors, well test, prosper software). To combat the deviation of the productivity index, it was decided to cut a core and use more down hole sensors to monitor the actual productivity index, from core data it was observed that the reservoir is oil wet. Using new core data, a relation between Ko@swi and Φ was derived. This relation showed excellent results compared with available sensors data, well test data, and prosper software. The derived new relation will help in production optimization and knowledge of damaged wells and consequently maximize the oil reserve. This paper highlights the work done by Petrobel to create a good relation between porosity and effective permeability, which should be representative of reservoir properties and the importance of considering the wettability to derive such relation. Introduction Estimation of permeability is of pivotal importance for the description of different physical processes, such as hydrocarbon recovery. Mainly due to the intricate geometry of the connected pore space and to the complexity of porous media, it has been very difficult to formulate satisfactory theoretical models for permeability. Permeability of porous media is usually expressed as function of some physical properties of the interconnected pore system such as porosity and tortuosity. Although it is natural to assume that permeability values depend on porosity, it is not simple to determine which is the appropriate relationship. In order to expect how much a new well can produce, and knowledge of damaged wells, it is very important to create a good relation between porosity and permeability, which should be representative of reservoir properties in order to improve the production and maximize the oil reserve.
- Africa > Middle East > Egypt > Gulf of Suez (1.00)
- Africa > Middle East > Egypt > Suez Governorate > Suez (0.41)
- Africa > Middle East > Egypt > Gulf of Suez > Gulf of Suez Basin > Rudeis Formation (0.99)
- Africa > Middle East > Egypt > Gulf of Suez > Gulf of Suez Basin > Kareem Formation > Shagar Member (0.99)
- Africa > Middle East > Egypt > Gulf of Suez > Gulf of Suez Basin > Belayim Marine Field (0.99)
Water Injection Strategy in Belayim Fields
Siso, S. (Petrobel) | Awni, I. (Petrobel) | Solyman, M. (Petrobel) | Ibrahim, T. (Petrobel)
ABSTRACT Belayim field is a mature oil field located eastern side of Gulf of Suez onshore and off shore communicated through saddle in Kareem Rudies layers only. This field is being considered to be a giant. start producing since 1955 from Belayim land and from Belayim Marine (first off-shore discovery in Egypt in 1961) since 1962. Main Production is from Miocene sandstone reservoirs in a complexly faulted two anticlines. The large extension of the field accompanied with the presence of fault barriers and the lateral facies variation of sandy shale intercalation have confirmed the non-uniform depletion throughout the field implying slight compartmentalization behavior. The initial reservoir pressure was 4200 psi and has been declining in different manners. Belayim fields Water injection strategy was to start injection in periphery wells as the pressure depleted. In Belayim marine field modifying the periphery wells locations towards the producing wells through second and third rows and due to injection lines leakage and high cost to replace the lines with new, innovative solutions has to be implemented such as (dump flooding, injection portable units flexible lines,…… etc). In Belayim land field after good understanding of the reservoir and due to the heterogeneity of the reservoir a new strategy was developed by using separated injection pattern in different isolated blocks. Then to improve the sweep efficiency of waterfront the injection of polymer started. Also starting using water disposal wells to support pressure in Belayim land field. This paper highlights the different ways of solving the problems of water injection in Belayim fields How to optimize water injection and aiming to maintain the production plateau and consequently improve recovery (with optimum cost). INTRODUCTION Belayim Marine is one of the largest oil fields in the central Gulf of Suez and the first off-shore discovery in the middle east, in the early sixties. The field is operated by Petrobel, a joint venture between EGPC and IEOC, the cumulative production @ Dec., 2016 was 1596.753 MMSTB. The field contains several sandstone reservoirs, ranging from Palaeozoic to Miocene age. The total OOIP is 4150.585 MMSTB, 80% of which is contained in the Kareem Rudeis reservoir, which is being supported by a peripheral water flooding started in the eighties.
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Sandstone (1.00)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Mudrock > Shale (0.36)
- Water & Waste Management > Water Management > Lifecycle > Disposal/Injection (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- Africa > Middle East > Egypt > Gulf of Suez > Gulf of Suez Basin > Rudeis Formation (0.99)
- Africa > Middle East > Egypt > Gulf of Suez > Gulf of Suez Basin > Kareem Formation > Shagar Member (0.99)
- Africa > Middle East > Egypt > Gulf of Suez > Gulf of Suez Basin > Belayim Marine Field (0.99)
- (2 more...)
ABSTRACT: No doubt that all artificial lift wells have some problems somewhere and sometimes. However, permanent monitoring of the downhole status of equipment and production is superior to periodic monitoring in diagnosing the current conditions and thus finding appropriate approach to avoid production loss and even the well itself. Belayim Petroleum Company in Egypt (Petrobel) has much experience in running downhole multisensors that provide well and system data to both the reservoir and production engineering staff to tackle problems that they are facing in their jobs: high failure rate, sand fill up, scale formations, ESP wear, electric failures,.. etc. This experience started with Petrobel in 1994. Currently, Petrobel has installed twenty downhole gauges, while eight other systems are waiting associated accessories before installation. The permanent gauges supply nine measurements per minute yielding an incredible volume of information in real time to the surface. Downhole gauges supply accurate knowledge about the reservoir, downhole jewelry and the ESP. This in turn increases the run lifetime of the artificial lift system by monitoring the reservoir pressure and artificial lift system performance. This paper illustrates the long term benefits in using subsurface permanent gauges to complement artificial lift equipment and help provide real time data to optimize well and/or field production. Real examples from both offshore and onshore problems are outlined. The article also highlights un optimized wells that have been converted into successful artificial lift completions by properly interpreting the gauge measurements and using this data to optimize production. This paper brings data interpretation to new level of prediction, which in turn enhances the economics of well or fields and minimizes risk in production operations, especially offshore.
- Asia > Middle East > Israel > Mediterranean Sea (0.44)
- Africa > Middle East > Egypt (0.24)