Evaluating the Feasibility of Waste Slurry Injection in an Oil Prospect in the Western Desert, Egypt
- S. M. Kholy (Advantek Waste Management Services) | O. Sameh (Advantek Waste Management Services) | N. Mounir (Advantek Waste Management Services) | M. Shams (Advantek Waste Management Services) | I. M. Mohamed (Advantek Waste Management Services) | A. Abou-Sayed (Advantek Waste Management Services) | O. Abou-Sayed (Advantek Waste Management Services)
- Document ID
- Society of Petroleum Engineers
- SPE Middle East Oil and Gas Show and Conference, 18-21 March, Manama, Bahrain
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- 2.7.1 Completion Fluids, 2 Well completion, 3 Production and Well Operations, 0.2.2 Geomechanics, 2.7 Completion Fluids, 0.2 Wellbore Design, 4.1 Processing Systems and Design, 4 Facilities Design, Construction and Operation, 4.1.2 Separation and Treating, 1.11 Drilling Fluids and Materials
- Western Desert, Sensitive Environment, Hydraulic Fracturing, Egypt, Waste Slurry Injection
- 1 in the last 30 days
- 84 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 9.50|
|SPE Non-Member Price:||USD 28.00|
Oilfields produce huge amount of waste on daily basis such as drilling mud, tank bottoms, completion fluids, well treatment chemicals, dirty water and produced saltwater. These waste types represent a real challenge to the surrounding environment especially when the oilfield is located within a sensitive environment as in the Western Desert where there are natural reserves and fresh water aquifers. Waste slurry injection has proven to be an economic, environmentally friendly technique to achieve zero waste discharge on the surface over the past years. This technique involves creating a hydraulic fracture in a deep, subsurface, non-hydrocarbon bearing formation which acts as a storage domain to the injected slurrified waste. The objective of this study is to evaluate the feasibility of waste slurry injection in an oil prospect located in the Western Desert. The evaluation includes assessing the subsurface geology, recognizing the possible candidate injection formation(s), and designing the optimum injection parameters.
Both geological and petrophysical data have been used to create the geomechanical earth model for an oil prospect located at Farafra oasis in the Western Desert. This model defines the mechanical properties, pore pressure, and in-situ stresses of the different subsurface formations. Afterwards, a fully 3D fracture simulator has been used to simulate the fracture growth within the candidate injection zone at different injection scenarios. Additionally, the fracture simulator has assessed the containment of the created fracture within the candidate injection formation(s) due to the presence of stress barriers above and below the formation. Finally, the formation disposal capacity has been calculated for each of the injection scenarios using a stress increment model.
The geomechanical earth model shows that there is a good candidate injection zone which is upper/lower bounded by stress barriers. More importantly, it is located deeper than the local fresh water aquifer and thus no contamination is expected to the fresh ground water. In addition, the possible candidate is not a hydrocarbon bearing formation.
A 3D fracture simulator has been used to determine the optimum injection parameters such as: the injection flow rate, the volumetric solids concentration, the slurry rheology and the injection batch duration. These optimum parameters are defined to minimize the stress increment rate over the well life, which ensure the highest disposal capacity and to contain the fracture within the candidate injection formation.
Guidelines to conduct waste slurry injection technique in a new oil prospect that is located within a sensitive environment as in the Western desert are presented in this study. Also, the study highlights that this technique is economic for disposal of the different oilfield waste types in an environmentally friendly fashion.
|File Size||1 MB||Number of Pages||16|
Abou-Sayed, A. S., Zaki, K., and Summers, C. 2004. Management of Sour Gas by Underground Injection- Assessment, Challenges, and Recommendations. SPE International Conference on Health, Safety, and Environment in Oil and Gas Exploration and Production, Calgary, AB, Canada, Mar. 29-31, SPE Paper No. SPE-86605-MS
Apache Environment Impact Assessment for oil and gas activities. http://www.miga.org/sites/default/files/archive/Documents/Apache_Egypt_2005_EIA_for_Egyptian_Oil_and_Gas.pdf
Egyptian Environmental Affairs Agency (EEAA) Website: http://www.eeaa.gov.eg/en-us/topics/nature/protectorates/protectoratesdescription.aspx
Exploration and Production Waste Management Survey http://astswmo.org/files/policies/Materials_Management/Final%20BUTF%20OilGas%20Survey%20Report%20March%202015.pdf
Hagan, J. T., Murray, L. R., Meling, T., Guo, Q., McLennan, J. D., Abou-Sayed, A. S., and Kristiansen, T.G. 2002. Engineering and Operational Issues Associated with Commingled Drill Cuttings and Produced Water Re-injection Schemes. Paper presented at Conference on Health, Safety and Environment in Oil and Gas Exploration and Production, 20-22 March, Kuala Lumpur, Malaysia. SPE-73918-MS
Kholy, S. M., Almetwally, A. G., Mohamed, I. M., Loloi, M., Abou-Sayed, A., & Abou-Sayed, O. 2018. A New Technique to Predict In-Situ Stress Increment due to Slurry Injection into Sandstone Formations: Case Study from a Biosolids Injector in Los Angeles, California, USA. Paper presented at SPE Western Regional Meeting, 22-26 April, Garden Grove, California, USA. SPE-190151-MS
Mohsen, A., Mohamed, A., Abdel Samiee, R., Ibrahim, E. G., Taha, I. M. A., and Hamdy, M. 2010. Implementation of PinPoint Fracturing Technique in the Western Egypt Desert. Society of Petroleum Engineers. Paper presented at SPE Production and Operations Conference and Exhibition, 8-10 June, Tunis, Tunisia. SPE-133864-MS
Nicodano, C., A. Mazerole, and J.D.A. Mckee. 2001. Experience of Safe and Efficient Drill Cuttings Disposal through Cuttings Re-injection. Paper Presented at the American Chamber of Commerce of Trinidad and Tobago Conference on Challenges, Responsibilities and Empowerment, 7-8 June, Port of Spain, Trindad and Tobago
Samir, M., Kamal, M., Mathur, A., Semary, M., Yosry, M., Bernechea, J. M., Kamar, A. and Mokhtar, A. 2013. Production Enhancement in the Egyptian Western Desert using the Channel-Fracturing Hi-Way Technique - A Field Case Study. Presented at North Africa Technical Conference and Exhibition, 15-17 April, Cairo, Egypt. SPE-164709-MS
Salah, M., Gabry, M. A., ElSebaee, M., and Mohamed, N. 2016. Control of Hydraulic Fracture Height Growth above Water Zone by Inducing Artificial Barrier in Western Desert, Egypt. Presented at Abu Dhabi International Petroleum Exhibition & Conference, 7-10 November, Abu Dhabi, UAE. SPE- 183040-MS
Sharif, M.D.A, Nagalakshmi, N.V.R., Reddy, S.S., Vasanth, G., Kumar, K. 2017. Drilling Waste Management and Control the Effects. J Adv Chem Eng 7: 166. doi: 10.4172/2090-4568.1000166
Wills, J. and Sakhalina, E. V. A Survey of Offshore Oilfield Drilling Wastes and Disposal Techniques to Reduce the Ecological Impact of Sea Dumping, 2000 http://www.offshore-environment.com/drillcuttings.html
Willson, S. M., Steiger, R. P., Moschovidis, Z. A., Abou-Sayed, A. S., de Bree, P., & Sirevag, G. 1999. Laboratory investigation of drill cuttings disposal by downhole injection. The paper presented at The 37th U.S. Symposium on Rock Mechanics (USRMS), 7-9 June, Vail, Colorado, USA. ARMA-99-1009