Field Development Workflow And Process For Unconventional Resources: "How Is It Different From Conventional Reservoirs?"

2013 ◽  
Author(s):  
Usman Ahmed
Keyword(s):  
Field Development ◽  
Unconventional Resources

The role of water management in unlocking unconventional resources

2014 ◽  
Vol 54 (2) ◽  
pp. 481
Author(s):  
Gary Crisp ◽  
John Walsh ◽  
Mark Shaw ◽  
Chris Hertle
Keyword(s):  
Water Management ◽  
Shale Gas ◽  
Management Strategies ◽  
Water Source ◽  
High Volume ◽  
Technology Selection ◽  
Holistic View ◽  
Field Development ◽  
Unconventional Resources ◽  
Unconventional Resource

Water management for unconventional resources is a complex, multidisciplinary subject that cannot be overlooked. Traditional oilfield development strategies view water as an afterthought that must be dealt with once the field matures and water cut begins to escalate. When this strategy is employed for shale gas developments, water usage is higher than necessary, trucking costs become high, and site remediation becomes time consuming and costly. For shale gas developments, the high-volume and high-quality requirements of water during the lifecycle of field development are a game changer. Water management for unconventional resources requires logistics planning, engagement of field services providers, and technology selection. Each of these issues need to be addressed in the early planning stages and must be tailored for the location and water types involved. This extended abstract takes a holistic view of water management for unconventional resource development across Australia. Management strategies are compared and contrasted for the different unconventional resource types, across different locations, considering all of the factors mentioned above, together with an understanding of regulatory differences, water source options, disposal options, and the different types of water involved. These factors are compared (in the context of North American developments) for CSG in Queensland, tight gas, and unconventional shale gas developments in the Cooper Basin and WA. As these different resources are developed, it is important to understand why the water management strategies are, and must be, different (as discussed in this extended abstract).

Assessment of Unconventional Resources Opportunities in the Middle East Tethyan Petroleum System in a Transfer Learning Context

2021 ◽  
Author(s):  
Cyrus Ashayeri ◽  
Birendra Jha
Keyword(s):  
Middle East ◽  
Transfer Learning ◽  
Fine Tuning ◽  
Data Driven ◽  
Learning Context ◽  
Eagle Ford ◽  
Field Development ◽  
Unconventional Resources ◽  
Basin Scale ◽  
The Impact

Abstract Decision making in new fields with little data available relies heavily on physics-based simulation models. However, due to a lack of full understanding of the physical processes governing flow in the unconventional resources, data-driven modeling has emerged as an alternative and complimentary tool to create recovery forecasts that honor the available data. Transfer Learning provides an opportunity to start early-stage analysis of the asset before adequate data becomes available. New challenges in the energy industry as well as shifting dynamics in both domestic and global supply and demand has encouraged some of the petroleum exporting countries in the Middle East to strategize the development of unconventional resources. In this research we have developed a data-driven Transfer Learning framework that allows the basin-wide assessment of new shale gas and tight oil prospects. The proposed Transfer Learning method is developed on real-world data from several thousand horizontal multistage wells in the Eagle Ford super-basin in South Texas. In this method we have integrated reservoir engineering domain expertise in the data pre-processing and feature generation steps. We have also considered the temporal and spatial balancing of the training data to assure that the predictive models honor the real practice of unconventional field development. Our full cycle Transfer Learning workflow consists of dimensionality reduction and unsupervised clustering, supervised learning, and hyperparameter fine-tuning. This workflow enables reservoir engineers to experiment with multiple hypothetical scenarios and observe the impact of additional data in the learning process. We use the developed workflow to examine the performance of a data-driven model of the Eagle Ford Basin on potential plays in the Middle East. Existence of all liquid types of oil, condensate and dry gas in the Eagle Ford has resulted in training a model flexible enough to be tested on various types of assets in a new location. We first present the successful deployment of our model within the Eagle Ford. Next, we use the information from major formations such as Tuwaiq Mountain and Hanifa and show the value of a pre-existing model from a fully-developed shale play on achieving acceptable accuracies with minimal information available in a new field. Our model is developed by data types with relatively low resolution that minimizes overfitting effects and allows generalization to different geologies with basin-wide accuracy. This approach allows conducting accelerated assessment of various sections of a large asset to enhance field development planning processes. This is a first example of such an effort on a basin scale that examines the effectiveness of Transfer Learning on some of the major unconventional plays in the Middle East region. This workflow allows investigating the relationship among geologic and petrophysical variables, drilling and completion parameters, and productivity of a large group of wells in a new asset.

scholarly journals Unconventional hydrocarbon resources: geological statistics, petrophysical characterization, and field development strategies

2021 ◽  
Author(s):  
Temoor Muther ◽  
Haris Ahmed Qureshi ◽  
Fahad Iqbal Syed ◽  
Hassan Aziz ◽  
Amaar Siyal ◽  
...  
Keyword(s):  
Coalbed Methane ◽  
Development Planning ◽  
Optimization Techniques ◽  
Well Logs ◽  
Unconventional Reservoirs ◽  
Hydrocarbon Production ◽  
Technical Aspects ◽  
Field Development ◽  
Unconventional Resources ◽  
Unconventional Hydrocarbons

AbstractHydrocarbons exist in abundant quantity beneath the earth's surface. These hydrocarbons are generally classified as conventional and unconventional hydrocarbons depending upon their nature, geology, and exploitation procedure. Since the conventional hydrocarbons are under the depletion phase, the unconventional hydrocarbons have been a major candidate for current and future hydrocarbon production. Additionally, investment and research have increased significantly for its exploitation. Having the shift toward unconventional hydrocarbons, this study reviews in depth the technical aspects of unconventional hydrocarbons. This review brings together all the important aspects of unconventional reservoirs in single literature. This review at first highlights the worldwide unconventional hydrocarbon resources, their technical concept, distribution, and future supplies. A portion of this study also discusses the resources of progressive unconventional hydrocarbon candidates. Apart from this, this review also highlights the geological aspects of different unconventional hydrocarbon resources including tight, shale, and coalbed methane. The petrophysical behavior of such assists including the response to well logs and the discussion of improved correlation for petrophysical analysis is a significant part of this detailed study. The variation in geology and petrophysics of unconventional resources with conventional resources are also presented. In addition, the latest technologies for producing unconventional hydrocarbons ranging from fractured wells to different fluid injections are discussed in this study. In the end, the latest machine learning and optimization techniques have been discussed that aids in the optimized field development planning of unconventional reservoirs.

Intelligent drilling in digital field development

2020 ◽  
pp. 26-36
Author(s):  
N.А. Eremin ◽  
◽  
A.D. Chernikov ◽  
O.N. Sardanashvili ◽  
V.E. Stolyarov ◽  
...  
Keyword(s):  
Field Development

Drought stress and osmo-priming effects on physiological and biochemical characteristics of Ocimum basilicum

2016 ◽  
Vol 6 (1) ◽  
pp. 905-913
Author(s):  
Bahram Majd Nassiry ◽  
Neda Mohammadi
Keyword(s):  
Drought Stress ◽  
Total Protein ◽  
Catalase Activity ◽  
Seedling Emergence ◽  
Seed Priming ◽  
Ocimum Basilicum ◽  
Field Development ◽  
Physiological And Biochemical Characteristics ◽  
Germination Characteristics ◽  
And Control

    One of the effects of reducing water content on soil is reduction of growth and development of seedlings and variation of field development. Seed priming technique has been known as a challenge to improve germination and seedling emergence under different environmental stresses. The objectives of this research were to evaluate the effects of osmo-priming on germination characteristics and changes of proline, protein and catalase activity of Ocimum basilicum seeds. Results showed that drought stress reduced the germination characteristics and drought stress in -8 bar was the critical stress.  Priming treatments were include KNO3, PEG and NaCl by 0, -4 and -8 bar concentrations. The seeds were primed with those materials for 8 and 16 hours. The highest germination characteristics were obtained from nitrate potassium in -8 bar for 16 hours priming. Therefore the best seed treatment under drought stress during germination was obtained from the osmo-primed with -8 bar nitrate potassium for 16 hours. The drought stress increased proline and catalase activity but reduced total protein. Priming treatment increases proline, total protein and catalase activity under drought and control conditions. It is concluded that priming results in improvement in germination components of Ocimum basilicum in drought stress conditions and increases the resistance to drought stress with improvement of proline, protein and catalase activity in germination phase.

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