Geomechanics involvement at the very beginning of field development planning allows reducing risks for reservoir stimulation, increasing hydrocarbon recovery and enhance overall economic of the field.

Drilling optimization

Problem root cause identification and analysis, prediction for planned trajectory, drilling risk effects mitigation and minimization: rock failure and breakout control, mud losses, NPT during drilling and tripping in/out procedures (backreaming), swab&surge effects, stuck-pipe and etc.

Analytical solution is applied to calculate elastic properties and strength parameters of the rocks, lithostatic pressure and pore pressure, stress state and wellbore stability. All of these are used to optimize trajectory (inclination and azimuth) and completion (optimal casing size and shoe depth) of the well, safe mud weight, ECD limits and tripping velocities during drilling and well construction procedures.

STANDARD	ADVANCED	COMPLEX
Mechanical properties, pore pressure and stress state calculation Isotropic 1D Wellbore Stability (WBS) WBS for planned well – trajectory and well design optimization, safe MW estimation	Anisotropic (TIV) 1D geomechanical model Partial accounting for structure when planning highly deviated well WBS calculation and well planning based on 3D geomechanical model (static)	High Risk Well Planning in complex with other disciplines Horizontal and ERD wells planning, risks evaluation and drilling map generation Planning and optimization of drilling for field development based on 3D-4D modelling

 

Well completion and production optimization

Geomechanics study results integration with other disciplines allow resolving problems with sanding production, risks and uncertainty evaluation for hydraulic fracturing on a qualitatively new level.

For sanding prediction analytical solution is used to estimate dependency between reservoir and bottom hole pressure to define critical pressure at which sanding will occur. This allows proper planning of completion design at different stages of field development and well/pumps workovers.

Knowledge of mechanical properties distribution in vicinity of the well and at far field plays crucial role in defining sweet spots for well placement, identification favourable zones and intervals for stimulation, decision making for oriented perforation and hydraulic fracturing.

STANDARD	ADVANCED	COMPLEX
1D geomechanical model as a basis for frac design optimization Bottom hole pres-sure evaluation to reduce risk of sanding production	Evaluation of optimal azimuth and interval for well placement in terms of hydraulic fracturing Best intervals selection for perforation and port placement 3D geomechanical modelling for stress barriers mapping and frac design optimization	Favourable areas and intervals evaluation for optimal rig/platform/well placement in terms of effective drilling and multistage fracturing Well completion optimization for hydraulic frac-turing