We Love the Rocks.

We Feel the Earth.

Drilling

We have to provide three types of drilling methods and techniques with different depth and diameter of bore holes.

Sampling

We have to collect the samples with different sampler, which is applicable for soil and rock both disturbed and undisturbed samples.

Logging

Logging is necessary and important part of drilling a best professional person can identify the strata and put it into the log form.

Here we are explain our four Major Services.

  • Drilling

  • Collection of Samples

  • Laboratory Test

  • Field Test

Drilling:

We have to provide three types of drilling methods and techniques with different depth and diameter of bore holes.

  1. Rotary wash Drilling
  2. Percussion Drilling
  3. Auger

In Rotary drilling: is a very fast method of advancing hole in both rocks and soils. A drill bit, fixed to the lower end of the drill rods, is rotated by a suitable chuck, and is always kept in firm contact with the bottom of the hole. A drilling mud, usually a water solution of bentonite, with or without other admixtures, is continuously forced down to the hollow drill rods. The mud returning upwards brings the cuttings to the surface.This method is suitable for boring holes of diameter 3in, or more preferably 4 to 6in, in most of the rocks. The depth of various strata can be detected by inspection of cuttings.

In Percussion Drilling: In this method, soil and rock formations are broken by repeated blows of heavy chisel/bit or barrel suspended by a cable or drill rod. Water is added to the hole during boring,  if not already present and the slurry of pulverized material is bailed out at intervals. The method is suitable for advancing a hole in all types of soils, boulders and rock. The formations, however, get disturbed by the impact.

 In Auger: Augers are used in cohesive and other soft soils above water table. They may either be operated manually or mechanically. Hand augers are used up to a depth of 6 m. Mechanically operated augers are used for greater depths and they can also be used in gravelly soils.

We will also perform.

Water Well Drilling:We offer you a water well drilling with experienced professional staff. We have experience in drilling water wells throughout Pakistan. Steel or PVC well casing and well screen can be installed together with appropriate filter packs. We can also undertake pumping tests to assess well performance and advice on optimum well yields and pump selection, as well as complex discharge and injection testing programs as part of hydrological investigations.

Groundwater Monitoring Wells:We have undertaken the drilling and installation of numerous groundwater monitoring wells in association with environmental impact assessments and long term groundwater monitoring programs. Our drill crews and supervisory staff have a wide experience of decontamination procedures and sampling protocols to avoid cross contamination. We also undertake groundwater sampling together with measurement of field parameters and subsequent laboratory analyses.

Collection of Samples:

We have to collect the samples with different sampler, which is applicable for soil and rock, some are for disturbed samples and some are for undisturbed samples.

  1. Split spoon/ SPT sampler
  2. Shelby tube sampler
  3. Denison & Pitcher Sampler
  4. Core Barrel (Single & Double)

SPT sampler: Standard Penetration Test, SPT, involves driving a standard thick-walled sample tube into the ground at the bottom of a borehole by blows from a slide hammer with standard weight and falling distance. The sample tube is driven 150 mm into the ground and then the number of blows needed for the tube to penetrate each 150 mm (6 in) up to a depth of 450 mm (18 in) is recorded. The sum of the number of blows required for the second and third 6 in. of penetration is reported as SPT blowcount value, commonly termed  “standard penetration resistance” or the “N-value”.
The N-value provides an indication of the relative density of the subsurface soil, and it is used in empirical geotechnical correlation to estimate the approximate shear strength properties of the soils.

Shelby tube sampler: A thin-walled soil-sampling tube, 12 to 30 in (30.5 to 76.2 cm) long, attached to a special rod adapter or sub by means of machine screws. The device is designed to take soil samples by pressing or pushing the tube down into the formation sampled.

Denison sampler: A large-size, swivel-type double-tube core barrel designed for soil-testing work to obtain relatively undisturbed core like samples of soft rock and/or soil formations. The inner tube is provided with a thin wall liner and a finger- or basket-type core lifter or core-retaining device. Also called Denison core barrel.

Pitcher sampler: The Pitcher Sampler is designed specifically to recover accurate samples from formations that are too hard for thin-wall shelby samplers or too brittle, soft or water-sensitive to permit satisfactory recovery by conventional core barrel type samplers.

Core Barrel: The part of borehole drilling equipment in which the core is collected. Usually the barrel is 50–100 mm in diameter with the drill bit at one end. Sometimes an inner tube is present, linked by a swivel to prevent its rotation (double core barrel).

Laboratory Test:

Geo-technical tests: are performed by geo-technical engineers, geo-technical technicians or engineering geologist to understand the characteristics such as the physical properties that exist underneath a work site. Geo-technical testing will include a walk around of the surface conditions as well as one or more of a variety of tests.

  1. California Bearing Ratio Test (CBR)
  2. One Point CBR (Soaked)
  3. One Points CBR (Unsoaked)
  4. Three Points CBR (Soaked)
  5. Three Points CBR (Unsoaked)
  6. Direct Shear Test
  7. Permeability Test
  8. Proctor Compaction Test
  9. Unconfined Compression Test
  10. Determination of Moisture Content (DMC)
  11. Determination of Specific Gravity
  12. Determination of Water Content
  13. Grain Size Analysis
  14. Atterberg Limits
  15. Dry Density
  16. Bulk Density
  17. Hydrometer Analysis
  18. Relative Density
  19. TDS
  20. Organic Matter
  21. pH
  22. Consolidation
  23. Electric Resistivity Lab Test

Field Test:

Field test is basic and necessary part of Geo-technical & construction line. we have provide this facility with responsible and professional staff.

The tests being offered are:

  1. Standard Penetration Test (SPT)
  2. Cone Penetration Test (CPT)
  3. Field Density Test (FDT)
  4. Electrical Resistivity Test
  5. Thermal Conductivity Test

Standard Penetration Test: The Standard Penetration test (SPT) is a common in situ testing method used to determine the geotechnical engineering properties of subsurface soils. It is a simple and inexpensive test to estimate the relative density of soils and approximate shear strength parameters.

Cone Penetration Test: The cone penetration test (CPT) is a common in situ testing method used to determine the geotechnical engineering properties of soils and assessing subsurface stratigraphy. Due to its simplicity and efficiency, the cone penetration test is one of the most commonly accepted and used in-situ testing methods in geotechnical investigation worldwide.

Field Density Test: The in situ density of natural soil is needed for the determination of bearing capacity of soils, for the purpose of stability analysis of slopes, for the determination of pressures on underlying strata for the calculation of settlement and the design of underground structures.

Electrical Resistivity Test: Electrical resistivity testing of Soil is the process of measuring a volume of soil to determine the conductivity of the soil. The resulting soil resistivity is expressed in ohm-meter or ohm-centimeter. Electrical resistivity testing for Soil is the single most critical factor in electrical grounding design.

Thermal Conductivity Test: The thermal conductivity of sand and soil samples is determined by the thermal conductivity of the solid grains (the matrix) and of the pore filling. The pore filling of a dry material is air, the pore filling of a saturated material is water. Hence the thermal conductivity of a porous material increases with water content.