A Revolutionary Pre-Drill Risk Reduction Solution

Discover better drilling economics with our revolutionary stress buy zolpidem mapping software generated from interpreted reflection 2D & 3D seismic.

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Fully Compatible with ResAssure, and any 2D or 3D Seismic

DrillAssure is not only powerful in comprehensive stress buy zolpidem mapping, but it’s also flexible enough to be fully integrated with any 2D or 3D Seismic, along with being easily integrated with ResAssure, our fast Reserves Assurance software tool.


Unique & Accurate

Patented method that determines quantified Earth stresses from reflection seismic for application across the E&P businesses.

Reduced cost and increased safety

Drilling risk reduction through optimal stress-based well planning maintains good hole quality and increases safety.

Stress Density Calculator

Don’t rely on sparse post-drill stress measurements. Calculate stresses in 3D before you drill.

Reduce the interpretation risk

Stress consistent seismic interpretation self-checks most mapping before it goes into the reservoir model. A feature unique to DrillAssure.

Today’s stress at any depth

DrillAssure accurately calculates today’s stresses from the full history stored within the shape of the seismic horizons.

Sealed compartments

DrillAssure identifies potentially fault sealed compartments from the prospect stage and reduce the number of wells drilled in the appraisal and development stages.

A Revolutionary First in Seismic Interpretation Stress

The only drill-risk reduction tool that can determine Earth stresses in sedimentary basins pre-drill.


Built-In Earth Stress Analyzer

The only drill risk reduction tool to determine Earth stresses in sedimentary basins pre-drill.

Produces Quantified Earth Stresses

DrillAssure produces quantified Earth stresses for directional drilling and optimal field development. There is no other revolutionary tool like it on the market.

Reduce Drilling Risk

Petroleum producers can dramatically reduce drilling risk and therefore save on costs associated with all E & P wells through using DrillAssure.

Intuitive & Easy to Use

DrillAssure has an intuitive, flexible, powerful, and easy to use interface.

Quantified Stress Maps Generation

One of the standard DrillAssure outputs include the quantified stress maps generated from the Structure and Isochore maps obtained from interpretd refelction seismic.
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Directional Well Planning

Multi-azimuth inclined wells can be planned using random stress section option of DrillAssure.
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Pressure Depth Graph

Quantified PDG graphs can be constructed to cover any well direction and inclination. PDGs affords quick review of large amount of accurately interpreted data without the necessity for dependence on extrapolation of sparse prior well histories.
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Fault Seal Confidence

Fault seal graphs can be determined for any fault or part of a fault based on the full earth stress history.
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Stress Variations

With DrillAssure, the earth stresses can not only be determined but their variations can be mapped throughout the 3D volume of the seismic survey provided.
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Reduce drilling costs & plan for a longer field life. Here’s How it Works:

Reduce drilling costs, avoid geological hazards, reduce drilling program size and plan for a longer field life with DrillAssure, created by Stochastic Simulation’s Principal Geophysicist & Geologist, John K Davidson.

The starting point for DrillAssure predrill stress determination is either the 2D or 3D interpreted reflection seismic survey generated by any traditional seismic interpretation software. Seismic surveys does not only record the deformation of the horizons but also indicate the stresses that deformed them.

DrillAssure transforms this structural geology information obtained from the interpreted reflection seismic to quantified present day earth stresses using DrillAssure patented method.

Become an Accredited DrillAssure Consultant

Stochastic Simulation offers consultants the opportunity to benefit from some of the most innovative solutions in the Oil & Gas industry and increase revenue through our comprehensive accreditation program.

Stochastic Simulation’s accreditation program enables consultants to receive in-depth product training to ensure you can leverage the full potential of our solutions and provide your client’s with exceptional added value.

Click here for more info on how Stochastic’s Solutions can increase your revenue and provide substantial value to your customers.

Frequently Asked Questions

Why stress determination is important for oil and gas industry?

Petroleum industry, while undertaking most of the endeavours during exploration, drilling and production stages, find itself working with or against the earth stresses. Knowing these stresses prior to these operations can not only help reduce risk and expensive drilling problems such as over pressure, lost circulation and wellbore instability but also can be the primary controls for designing various well stimulation jobs such as hydraulic fracturing and plan horizontal / inclined wells.

Knowing stresses can also help you predict the fault seal integrity and identify the subsurface compartments helping industry with far more confident reserve estimation.

What makes Drill Assure unique?

DrillAssure is the only tool currently available in the market to determine the quantitative earth stresses in the sedimentary basins pre-drill. DrillAssure’s stress from interpreted seismic is clearly better, less costly and more timely for development drilling than expensive, time consuming, point source wellbore measurement data.

Is Drill Assure compatible to be used with any seismic interpretation package? / What Seismic Interpretation packages are supported by Drill Assure?

DrillAssure supports some of the most commonly used seismic interpretation packages such as Kingdom and Petrel. To know if your seismic interpretation package is supported by DrillAssure or not, please contact our software support staff at support@stochasticsimulation.com.

What is Stress consistent seismic interpretation?

Accuracy of seismically derived structure maps is fundamental throughout Exploration, Drilling and Production stage. DA can reduce this interpretation risk with its unique feature of stress consistent seismic interpretation. It self-checks most of the mapping horizons before going into a reservoir model.

With DrillAssure, one can continually stress test the interpretation of the structural history displayed on an interpreted seismic which is then converted into quantified stress. The results can also be compared with today’s measured stress direction, if available. When stress-isochores are placed in a 3D seismic volume, interpretations that are equal to, or consistent with, measured stresses such as wellbore breakouts and drilling induced fractures, are more likely to be correct, hence the mapping is more likely to be accurate.

In areas of no such measurements there is a quick test of the mapping. A characteristic of Earth stress is the general increase in stress magnitude towards the Anderson reverse fault stress state with depth. For an area of fair to good quality 3D seismic or closely spaced 2D data (0.5km line spacing), this stress progression reflects Earth stress increase with depth and a probably high standard of seismic interpretation. Details on Individual stress-isochores are therefore likely to be accurate. Data quality and density and horizon continuity are also tested.

Departures from the increasing stress trend with depth can be valid but require explanation outside basement involved basin subsidence.

Can the Drill Assure results exported and compatible with other industry software?

Once a full series of stress maps have been calculated and QC’ed for a project area the stress data (gradients of Sh/SV and SH/SV, SHD, SH, Sh, SV, etc.) can be gridded to create gradient maps in DrillAssure or exported for use in a different programme such as GIS or an interpretation package such as Kingdom and a reservoir simulator such as ResAssure.

How is stress determination currently done in Oil & Gas industry?

The current industry techniques to model the horizontal stress components of earth include the wellbore measurements (minifrac and wellbore breakouts / failures). Borehole imaging and logging techniques are required to record these wellbore stresses.

This sort of data normally takes years to gather at the cost of millions of dollars in rig time and logging. The wells provides a series of 2D sets of data and no way to connect them in 3D except by averaging SHD’s between wells and drilling more wells. The stress results obtained need to be extrapolated often over many kilometres for pre-drill planning.

Has Drill Assure pre drill determination stresses calibrated against the real field projects? / How well proven is the Drill Assure pre drill stress determination technology?

DrillAssure has been calibrated against more than 80 real field projects and test areas with successful predictions.

Who should use Drill Assure?

With earth stress data available, Significant cost savings exist in all four quarters of the upstream oil and gas business and hence Petroleum explorers, producers and drillers who want the accurate reserve estimation, maximise field performance and reduce the drilling risks should be looking no further than DrillAssure.

Does Drill Assure require any other stress measurement data for the earth stress determination?

The primary output of a DrillAssure stress determination process is a 3D stress volume derived entirely from a 2D or 3D interpreted reflection seismic dataset. The number of picked horizons, data quality and density will determine the accuracy of the quantified values in the eD stress volume.

Other useful DrillAssure standard outputs obtained from 3D stress volume include random stress sections, fault seal graphs and quantified pressure depth graphs (PDGs). Fault seal graphs can be generated for any fault or part of the fault and is determined based on full earth stress history.

PDGs for a vertical well can be constructed to cover any well direction and inclination. PDGs afford quick review of large amounts of accurately interpreted data such as the principal stresses SHmax, Shmin and SV (load) are presented with their direction (SHD, ShD and SV ) and magnitude SH/SV concurrently with Sh/SV which express the three Anderson, plus the four DrillAssure extended stress states, as ratios and quantitatively in mega pascals (MPa) with depth.

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