Case Study: Effect of Different Unstable Water Injection Modes with Horizontal Row Well Pattern in Low Permeability Carbonate Reservoir of Middle East

2021 ◽  
pp. 3105-3115
Author(s):  
Yang Yang ◽  
Yong Li ◽  
Wen-qi Zhang ◽  
Da-wang Liu ◽  
Yi-hang Chen ◽  
...  
Keyword(s):  
Middle East ◽  
Water Injection ◽  
Carbonate Reservoir ◽  
Low Permeability ◽  
Well Pattern ◽  
Injection Modes

Application of Highly Inclined Well to Optimizing Well Pattern: Case Study of a Giant Carbonate Reservoir in the Middle East

2019 ◽  
Author(s):  
Liang Sun ◽  
Liang Wei ◽  
Hang Zhao ◽  
Baozhu Li ◽  
Yong Li
Keyword(s):  
Middle East ◽  
Carbonate Reservoir ◽  
Well Pattern

Injectivity and Propagation of Sulfonated Acrylamide-Based Copolymers in Low Permeability Carbonate Reservoir Cores in Harsh Salinity and Temperature Conditions : Challenges and Learnings from a Middle East Onshore Case Study

2021 ◽  
Author(s):  
Nicolas Gaillard ◽  
Matthieu Olivaud ◽  
Alain Zaitoun ◽  
Mahmoud Ould-Metidji ◽  
Guillaume Dupuis ◽  
...  
Keyword(s):  
Middle East ◽  
Polymer Solutions ◽  
Carbonate Reservoir ◽  
Core Material ◽  
Low Permeability ◽  
The Core ◽  
Reservoir Conditions ◽  
Carbonate Cores ◽  
The Impact ◽  
Mobility Reduction

Abstract Polymer flooding is one of the most mature EOR technology applied successfully in a broad range of reservoir conditions. The last developments made in polymer chemistries allowed pushing the boundaries of applicability towards higher temperature and salinity carbonate reservoirs. Specifically designed sulfonated acrylamide-based copolymers (SPAM) have been proven to be stable for more than one year at 120°C and are the best candidates to comply with Middle East carbonate reservoir conditions. Numerous studies have shown good injectivity and propagation properties of SPAM in carbonate cores with permeabilities ranging from 70 to 150 mD in presence of oil. This study aims at providing new insights on the propagation of SPAM in carbonate reservoir cores having permeabilities ranging between 10 and 40 mD. Polymer screening was performed in the conditions of ADNOC onshore carbonate reservoir using a 260 g/L TDS synthetic formation brine together with oil and core material from the reservoir. All the experiments were performed at residual oil saturation (Sor). The experimental approach aimed at reproducing the transport of the polymer entering the reservoir from the sand face up to a certain depth. Three reservoir coreflood experiments were performed in series at increasing temperatures and decreasing rates to mimic the progression of the polymer in the reservoir with a radial velocity profile. A polymer solution at 2000 ppm was injected in the first core at 100 mL/h and 40°C. Effluents were collected and injected in the second core at 20 mL/h and 70°C. Effluents were collected again and injected in the third core at 4 mL/h and 120°C. A further innovative approach using reservoir minicores (6 mm length disks) was also implemented to screen the impact of different parameters such as Sor, molecular weight and prefiltration step on the injectivity of the polymer solutions. According to minicores data, shearing of the polymer should help to ensure good propagation and avoid pressure build-up at the core inlet. This result was confirmed through an injection in a larger core at Sor and at 120°C. When comparing the injection of sheared and unsheared polymer at the same concentration, core inlet impairment was suppressed with the sheared polymer and the same range of mobility reduction (Rm) was achieved in the internal section of the core although viscosity was lower for the sheared polymer. Such result indicates that shearing is an efficient way to improve injectivity while maximizing the mobility reduction by suppressing the loss of product by filtration/retention at the core inlet. This paper gives new insights concerning SPAM rheology in low permeability carbonate cores. Additionally, it provides an innovative and easier approach for screening polymer solutions to anticipate their propagation in more advanced coreflooding experiments.

First microseismic monitoring results for a Middle East carbonate reservoir: Minagish oil field case study, western Kuwait

2008 ◽  
Author(s):  
Emmanuel Gaucher ◽  
Christophe C. Maisons ◽  
Abdullatif Y. Al-Kandari ◽  
Kamal Al-Atroshi and Jassim M. Al-Kanderi
Keyword(s):  
Middle East ◽  
Microseismic Monitoring ◽  
Carbonate Reservoir ◽  
Oil Field ◽  
Field Case

A Case Study of Miscible CO2 Flooding in a Giant Middle East Carbonate Reservoir

2019 ◽  
Author(s):  
Shuhong Wu ◽  
Tianyi Fan ◽  
Lisha Zhao ◽  
Hui Peng ◽  
Min Tong ◽  
...  
Keyword(s):  
Middle East ◽  
Carbonate Reservoir

The Development Technology Policy of Secondary Oil Recovery in the Overpressure Carbonate Reservoir

2013 ◽  
Vol 680 ◽  
pp. 295-300
Author(s):  
Ye Fei Chen ◽  
Zi Fei Fan ◽  
Jun Ni ◽  
Yun Juan Li ◽  
Qing Ying Hou
Keyword(s):  
Oil Recovery ◽  
Technology Policy ◽  
Water Injection ◽  
Carbonate Reservoir ◽  
Low Permeability ◽  
Development Mode ◽  
Engineering Research ◽  
Well Spacing ◽  
Development Technology ◽  
Secondary Oil Recovery

Kenkiyak oilfield in kazakstan is a low porosity, extremely low permeability and overpressure carbonate reservoir. There are different reservoir and fracture characteristics in different region. The formation pressure decline seriously and water cannot be injected into the low permeability zone. Referring to the domestic and oversea research achievement, integrating regional geologic characteristics, numerical simulation results and reservoir engineering research results, we optimize a series of the development technology policy, including the reasonable gas and water injection modes and injection opportunity, the suitable well patterns and well spacing. Meanwhile, the development mode of energy supplement in the extremely low permeability and overpressure reservoir is explored.

A New Polymer Flooding Technology for Improving Low Permeability Carbonate Reservoir Recovery--From Lab Study to Pilot Test--Case Study from Oman

2019 ◽  
Author(s):  
Xingcai Wu ◽  
Yongli Wang ◽  
Ahmed Al Naabi ◽  
Hanbing Xu ◽  
Ibrahim Al Sinani ◽  
...  
Keyword(s):  
Polymer Flooding ◽  
Carbonate Reservoir ◽  
Low Permeability ◽  
Test Case ◽  
Pilot Test
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