Preventing Asphaltene Deposition by Inhibitor Squeeze Injection: Case Studies from Giant Carbonate Abu Dhabi Fields

2021 ◽  
Author(s):  
Sameer Punnapala ◽  
Dalia Salim Abdullah ◽  
Mark Grutters ◽  
Zaharia Cristea ◽  
Hossam El Din Mohamed El Naggar ◽  
...  
Keyword(s):  
Implementation Strategy ◽  
Field Trials ◽  
Abu Dhabi ◽  
Complex Nature ◽  
Full Field ◽  
Oil Companies ◽  
Asphaltene Deposition ◽  
Proactive Measures ◽  
Intervention Costs ◽  
Performance Results

Abstract Asphaltene deposition is a notorious flow assurance problem faced by oil companies that causes production loss and large expenses for operators. The complex nature of asphaltenes and limited data available makes it challenging to develop a full field implementation strategy that is economically viable as well. Conducting asphaltene clean-up operations whenever wells get plugged up are the reactive approach to deal with asphaltene issues. However these approaches often result in prolonged well downtime, production losses and high well intervention costs. As part of proactive measures, chemical inhibitors were screened for formation squeeze and field trials conducted to assess their performance. Results from these trials helped to frame the full-field implementation strategy that is promising from a technical-economic standpoint. This paper describes the asphaltene mitigation journey of a major Abu Dhabi oil operator that resulted in multi-million dollar savings.

From Science to Practice: Improving ROP by Utilizing a Cloud-Based Machine-Learning Solution in Real-Time Drilling Operations

2021 ◽  
Author(s):  
Kriti Singh ◽  
Sai Yalamarty ◽  
Curtis Cheatham ◽  
Khoa Tran ◽  
Greg McDonald
Keyword(s):  
Machine Learning ◽  
Real Time ◽  
Situational Awareness ◽  
Field Tests ◽  
Field Trials ◽  
Permian Basin ◽  
Lateral Vibrations ◽  
Drilling Parameters ◽  
Drilling Conditions ◽  
Performance Results

Abstract This paper is a follow up to the URTeC (2019-343) publication where the training of a Machine Learning (ML) model to predict rate of penetration (ROP) is described. The ML model gathers recent drilling parameters and approximates drilling conditions downhole to predict ROP. In real time, the model is run through an optimization sweep by adjusting parameters which can be controlled by the driller. The optimal drilling parameters and modeled ROP are then displayed for the driller to utilize. The ML model was successfully deployed and tested in real time in collaboration with leading shale operators in the Permian Basin. The testing phase was split in two parts, preliminary field tests and trials of the end-product. The key learnings from preliminary field tests were used to develop an integrated driller's dashboard with optimal drilling parameters recommendations and situational awareness tools for high dysfunction and procedural compliance which was used for designed trials. The results of field trials are discussed where subject well ROP was improved between 19-33% when comparing against observation/control footage. The overall ROP on subject wells was also compared against offset wells with similar target formations, BHAs, and wellbore trajectories. In those comparisons against qualified offsets, ROP was improved by as little as 5% and as much as 33%. In addition to comparing ROP performance, results from post-run data analysis are also presented. Detailed drilling data analytics were performed to check if using the recommendations during the trial caused any detrimental effects such as divergence in directional trends or high lateral or axial vibrations. The results from this analysis indicate that the measured downhole axial and lateral vibrations were in the safe zone. Also, no significant deviations in rotary trends were observed.

First Full Field Application of Distance Separated Simultaneous Shooting to 3D OBC Survey Offshore Abu Dhabi, UAE

2014 ◽  
Author(s):  
Shotaro Nakayama ◽  
Khalfan Al-Mansouri ◽  
Mark Allen Benson ◽  
Gary Mercado ◽  
Kamel Belaid
Keyword(s):  
Field Application ◽  
Abu Dhabi ◽  
Full Field

Full Field Tertiary Gas Injection: A Case History Offshore Abu Dhabi

2002 ◽  
Author(s):  
E. Bonnin ◽  
B. Levallois ◽  
G. Joffroy
Keyword(s):  
Case History ◽  
Gas Injection ◽  
Abu Dhabi ◽  
Full Field

Full Field Development Plan Optimization Integrating Subsurface reservoirs uncertainties for Green Field Offshore Abu Dhabi, UAE

2012 ◽  
Author(s):  
Said Meziani ◽  
Mohamed Sayed Ibrahem ◽  
Khalil Al-Hossani ◽  
Tarek Mohamed Matarid ◽  
Bader Saif Al Badi
Keyword(s):  
Development Plan ◽  
Abu Dhabi ◽  
Full Field ◽  
Field Development ◽  
Plan Optimization

Minimising the Risk of Coach Burnout: From Research to Practice

2018 ◽  
Vol 5 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Sebastian Altfeld ◽  
Paul Schaffran ◽  
Jens Kleinert ◽  
Michael Kellmann
Keyword(s):  
Dynamic Environment ◽  
Coping Mechanisms ◽  
Complex Nature ◽  
Personal Factors ◽  
Research To Practice ◽  
Or Management ◽  
Association Management ◽  
Public Scrutiny ◽  
Performance Results ◽  
Clear Description

Paid coaches have to regularly deal with a range of potential stressors in the workplace. These stressors may include emotional and physical demands caused by the complex nature of coaching work. Many coaches have developed useful strategies to cope with these demands. Nevertheless, unexpected changes within the dynamic environment in which they typically operate (e.g., injury, public scrutiny, social media), problems with members of the board or management, continuous negative performance results, or personal factors may challenge the adequacy of coaches’ coping mechanisms. This inability to cope with these stresses can lead to a state of chronic stress. If that state manifests permanently, it can result in a state of emotional exhaustion, ultimately leading to coach burnout. The aim of this article is to define the burnout phenomenon and to provide a clear description of the triggering factors. Furthermore, ideas are presented to guide how coaches can protect themselves and how officials (club or association management) can reduce coaches’ burnout.

Full Field Tertiary Gas Injection in Abk Field Offshore Abu Dhabi

2003 ◽  
Author(s):  
B. Levallois ◽  
E. Bonnin ◽  
G. Joffroy
Keyword(s):  
Gas Injection ◽  
Abu Dhabi ◽  
Full Field

Calcium Naphthenates in Complex Production Systems - Evaluation and Chemical Inhibition Challenges

2014 ◽  
Author(s):  
D.A.. A. Nichols ◽  
F.F.. F. Rosário ◽  
M.C.M.. C.M. Bezerra ◽  
S.E.. E. Gorringe ◽  
H.L.. L. Williams ◽  
...  
Keyword(s):  
Laboratory Tests ◽  
Production Systems ◽  
Field Trials ◽  
Field Application ◽  
Worst Case ◽  
Full Field ◽  
Bicarbonate Ions ◽  
High Calcium ◽  
Low Levels ◽  
Field Deployment

Abstract Over the last 15 years, much research and many field application studies have led to considerable improvement in our understanding of the formation and mitigation of calcium naphthenate deposits. In this field example, calcium naphthenates and stable emulsions are formed following mixing of fluids from different reservoir formations on a single FPSO. High TAN crudes containing low levels of ARN produce with low calcium formation waters whereas low TAN crudes are associated with high calcium formation waters. Mixing of these two systems has led to calcium naphthenate deposition and associated problems with its removal. This paper outlines the challenges in this complex deepwater subsea production system and the interpretation of the cause of the deposit. A series of laboratory tests using a specialised flow rig were conducted to illustrate the effects of mixing different fluids and identify those mixtures with the largest naphthenate potential. The work further illustrates the effect of bicarbonate ions on the system. Laboratory tests at low levels of bicarbonate (to prevent carbonate scaling at separator conditions) do not result in calcium naphthenate formation when mixing the high TAN crude with the current produced brine (moderate calcium). Naphthenates only formed when mixing with the high calcium brine. When bicarbonate is included at full field levels (in the presence of a scale inhibitor) significant calcium naphthenate formation is recorded with the lower calcium brines. The effect of CO2 within the produced fluids has also been evaluated. The paper describes how several variables contribute to the likelihood of calcium naphthenate deposition and presents results from several naphthenate formation and inhibition tests covering a range of fluid compositions and mixtures. Chemical qualification in the lab using the worst case fluid mixtures has been conducted to select a calcium naphthenate inhibitor for field deployment. Field trials demonstrate both the effectiveness of the treatments and also the qualification exercise conducted for this field. The results further indicate the complexity of accurately predicting a calcium naphthenate risk while illustrating that, even under challenging conditions, chemical inhibitors are effective in this system.

Asphaltene Management Leading to Significant Reduction of Production Deferment Through New Technology Trial MFC Tool

2021 ◽  
Author(s):  
Tushar Narwal ◽  
Kamlesh Kumar ◽  
Zaal Alias ◽  
Pankaj Agrawal ◽  
Zahir Abri ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Fluid ◽  
Field Trial ◽  
Management Strategy ◽  
New Technology ◽  
Asphaltene Deposition ◽  
Management Project ◽  
Intervention Costs ◽  
The Impact ◽  
Over Time

Abstract In Southern Oman, PDO is producing from several high pressure (500-1000 bar), deep (3-5 km) and sour fields (1-10 mol % H2S). Over time, wells from one field (S A3) started having asphaltene deposition in the wellbore. Recently, the impact on production became severe resulting in high deferment, increased HSE exposure with plugging and high intervention costs. Asset team kicked off an asphaltene management project to tackle this problem, with one initiative being a field trial of a new technology, Magnetic Fluid Conditioner (MFC) to avoid/delay asphaltene plugging in the wellbore. This paper discusses the asphaltene management strategy and field trial results from this new tool deployed to prevent/delay asphaltene deposition.

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