Exploration well drilling is carried out at a depth of 2,000 meters or more for a detailed study of the geological structure of the earth’s crust, the productivity of the field and other important parameters.

Drilling operations

• Drilling vertical wells up to 2000M NQ, 1350 M HQ;
• Hydrogeological work;
• Injections into individual well intervals;
• Experimental single pumping, lasting from one day to 5 days;
• Pumping water during flow-measurement of wells in static and dynamic conditions;
• Water sample analysis;
• Installation in wells KVP (cable vibration piezometer).

Geophysical works. Logging is carried out by methods:

• Flowmetry;
• Inclinometry;
• Cavernometry;
• Optical logging (for the dry part of the well acoustic televiewers (OTV/ATV);
• Laboratory work;
• Determination of uniaxial compressive strength in the natural state;
• The same, in the water-saturated state;
• The same for uniaxial tension;
• Triaxial tests;
• Direct shear tests.

Definition:

• Conditional linkage in the pattern. With t/m²;
• The angle of internal friction, f. deg;
• Soil density, p. g/cm³;
• Moisture of natural soil. We, d.e.; Porosity coefficient e de;
• Strength of e wateras, kgf/cm²;
• Tensile strength , kgf/cm²;
• Volumetric weight (density) in. g/cm³;
• Skeleton specific weight , d, g/cm³;
• Porosity, p. %;
• Fracturing intensity. w. M-1;
• Lithological description of wells with engineering geological elements (EGE);
• Geotechnical description of the core according to the classification of D. Lobshir and Belyavsky.