Hey Flow, my suspicion is that it was "optimised" a little too much
Noting that any depiction of old Cuban wells shows a vertical formation straight into the target, which in Marti's case was exactly below the surface seep.
In both the appraisal wells Melbana have dog legged in order to hit multiple targets with 1 drill, this is what I feel the optimization relates too in this instance?
Apr 22
We remember the pressure and the kicks and the mud increases from Alameda-1, they happen for a reason & we didn't get to test on that drill either. Aug 22
Aug 23 Alameda-2 drilled with a dog leg to hit multiple targets with only unit 1B demonstrating the qualities of a money maker despite unit 3 potential The test in Unit 1B has confirmed the presence of moveable oil considerably lighter than that observed in Unit 1A. The fluid produced to surface was close to 100% oil with almost zero comingled water and no formation water observed in either the test or the wireline logs
Jun 24 Neither Marti nor Alameda flow oil to surface despite the pre-drill potential & I appreciate the exaggerated azimuth is probably just for depiction, but the angle used to intersect two reservoirs may have compromised the optimum angle & may have left them open to lost productivity potentials as explained below..
Something didn't go as planned, we know that much.. All I'm wondering is did we try to do too much in keeping costs down.. ? It's a tricky business & I wish to take nothing away from the team as no doubt they didn't set out to finish up like this.. But despite all the best efforts they didn't meet their objectives and point 1. on angled intersection suggests it does have an impact? gltah h8tey. Meta AI Yes, the angle at which a well intersects a reservoir can significantly impact the success of the well. Here are some factors to consider:
Permeability: A well that intersects the reservoir at a high angle (close to perpendicular) can maximize permeability, allowing for better fluid flow and higher productivity.
Contact area: A larger contact area between the well and reservoir can improve fluid exchange, increasing the chances of success. A higher angle of intersection can provide a larger contact area.
Drainage: The angle of intersection can affect the drainage area around the well, influencing the amount of fluid that can be drained from the reservoir.
Fracture interaction: If the reservoir is fractured, the angle of intersection can impact the likelihood of intersecting fractures, which can significantly impact well performance.
Reservoir heterogeneity: The angle of intersection can also impact the likelihood of encountering heterogeneous reservoir rock, such as layers with varying permeability or fluid saturation.
Optimizing the angle of intersection is crucial for: Improved well productivity Enhanced fluid recovery Reduced drilling and completion costs Increased chances of success Reservoir engineers and geologists use advanced modeling and simulation tools to optimize well trajectories and intersection angles for maximum success.
Meta AIOptimizing the intersection angle on multiple stacked reservoirs is a complex task, but it's possible with advanced reservoir modeling and simulation techniques. Here are some approaches: Integrated reservoir modeling: Build a comprehensive model incorporating all stacked reservoirs, their properties, and fluid behavior. This allows for simulating the interaction between reservoirs and optimizing well trajectories.
Multi-reservoir simulation: Use specialized software to simulate the behavior of multiple reservoirs simultaneously, accounting for fluid flow, pressure, and saturation changes.
Well trajectory optimization: Utilize algorithms and optimization techniques to determine the optimal well trajectory and intersection angles for each reservoir, considering factors like: 1. Reservoir properties (permeability, porosity, fluid saturation) 2. Fluid behavior (viscosity, density, compressibility) 3. Wellbore geometry and constraints
Sensitivity analysis: Perform sensitivity studies to understand how changes in intersection angles affect well performance and reservoir behavior in each stacked reservoir.
Multi-Objective optimization: Use techniques like Pareto optimization to balance competing objectives, such as: 1. Maximizing well productivity 2. Minimizing drilling costs 3. Optimizing fluid recovery from each reservoir
Uncertainty analysis: Account for uncertainties in reservoir properties, fluid behavior, and wellbore placement to ensure robust optimization results.
Iterative refinement: Refine the optimization process through iterative simulations, incorporating new data and updates to the reservoir model.
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