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Well Engineering

Some of the challenges faced by the drilling industry include: maintaining pressure control to minimize risks of a blowout or a wellbore collapse or loss of circulation; proper cementing; well cleaning; fulfilling drilling fluids requirements; maintaining the well’s correct direction, and so forth. Further, it is important to tackle these challenges in the minimum amount of time possible, provided that each second spent on drilling represents a financial cost. In that light, relying on customized simulation software solutions can lead to faster data processing and ultimately faster decision making.

Improve borehole cleaning

Properly removing solids from a well can avoid significant problems such as: stuck pipe, reduced ROP, excessive torque and increased annular pressure. Special care should be taken for directional and horizontal wells, where bedding is favored by gravity force. To monitor these issues, ESSS has developed Ecohid, a tool to simulate the carrying of drill cuttings by mathematically modeling the solid transport caused by the annular flow and other important aspects of the hydraulic project. Simulation results may be accessed securely from anywhere in the world through a collaborative and intuitive simulation environment.

Overcome troublesome salt drilling

Drilling through salt zones can be a very complex task due to the solubility and creeping of salt rocks. Synthetic fluids application has been presented as a solution in order to lower the mass transfer between rock and fluid, but their usage can be costly. Therefore, prediction of the impact caused by drilling fluids on the salt formation is very valuable. ESSS’s softwares are capable of simulating the circulation of fluids during both drilling and cementing and calculating the salt concentration in the fluid and hole enlargement, in order to devise more optimized salt zones drilling strategies.

Cement safely

Failures in a primary cementing operation can cause harmful effects: from the possibility of creating a communication path between formations to being the main cause of a blowout. Thus, cementing is an extremely important step in drilling and completion. Computational simulators are utilized to predict possible difficulties and to monitor operations in real time, which is indispensable to the operation’s design and field analysis. Engineers are able to simulate fluids circulation during cementing operations, determining pressures, flow rates and tensions present in points or sections of the pipes while running in hole.

Speed up decision 

During drilling, it is usual to keep the annular pressure within the drilling margin between the pore pressure and the fracture pressure. Nowadays, the control of undesired events related to well pressures is performed manually by a PWD (pressure while drilling) data analysis specialist, who collects and analyzes data in real-time data. PWDa is ESSS’s computational tool developed to manipulate, simulate and analyze pressure data. It is capable of detecting undesirable events, determine their possible causes, and assist in the decision-making process, to ultimately optimize the total drilling time and reduce costs.

Remove scale deposits at minimum cost

In waterflooding operations, it is common for the injection water to be incompatible with the formation water, which results in scale precipitation both inside of the reservoir and on the surface and subsurface equipment. Hence, remediation operations to remove solids and drilling fluid residue have an significant impact on well productivity. ESSS provides computational simulation solutions to determine the volumes and flow rates necessary to successfully remove solids, through the simulation of fluid circulation and fluid-solid interactions while considering the geometry of the well.