Blog

May 26,2026

Water Well Drilling in Middle East Carbonate: How to Handle Hard Limestone and Dolomite

Carbonate transitions fracture planar PDC cutters. Non-planar cutters, RPM-first protocols extend bit life 50%+ and hold deviation within 2 degrees.

May 24,2026

What Happens When Your DTH Hammer Starts Losing Impact Energy?

This guide explains why DTH hammers lose impact energy, noting most issues stem from air supply rather than the hammer itself. Common causes include pressure drops from leaks, insufficient air volume, worn carbide buttons, and faulty valves.

May 22,2026

PDC Cutter Specification White Paper: How to Read and Compare Supplier Datasheets

When procurement teams receive PDC cutter quotations from multiple manufacturers, the same size code often means different things. This white paper defines seven parameters that determine performance: size tolerance, cobalt content (6–16%), diamond concentration (90–130%), thermal stability, impact resistance, substrate hardness, and surface flatness. It provides a weighted scoring framework for supplier comparison and three practical verification checks needing only a micrometer and a 20× magnifier.

May 20,2026

Tricone Bit IADC Selection for Copper Porphyry Deposits in the Andes

In Andean porphyry copper ground (200–320 MPa, CAI 4.5–6.0), Series 6–7 TCI bits are mandatory. Use sealed friction bearing (X4/X5/X7) for any RC program deeper than 120 m or CAI > 3.5 — sealed units cost 18–22% more but deliver ~39% lower cost per metre by lasting 2× longer. Run IADC 637 through the oxide/supergene zone; switch to 737 below 200–250 m in fresh hypogene rock. Hold WOB at 8–16 kN, RPM at 60–100, and reduce both immediately at fault intercepts. Pull on time — a cone lost downhole ends the hole.

May 18,2026

Coal Mine Roof Bolt Drilling: Why Standard PDC Bits Fail

Standard PDC bits chip in coal mine roof bolt conditions for a mechanical reason: the loading regime is high-frequency micro-impact at low tip velocity, not continuous shear cutting. The fix is a bit with shorter blades, smaller cutters at higher density, reinforced gauge, and a short steel body.

May 16,2026

Drilling Cost Breakdown for Water Wells in Sub-Saharan Africa

This paper breaks down where cost actually accumulates in hard-rock water well drilling, identifies the mechanism by which drill bit selection amplifies or reduces cost in adjacent line items, and presents field data from three sub-Saharan project types.

May 14,2026

Your First Time Operating the ADMT Series Water Detector: A Step-by-Step Field Guide

This guide is written for field engineers and drilling-crew supervisors who have received an ADMT series water detector for the first time and need to produce usable survey data without prior training on the device. It covers every step from unpacking to reading the output curve — no previous geophysical survey experience is assumed.

May 12,2026

Geothermal Drilling in Indonesia and the Philippines: Which Drill Bits Survive Volcanic Formations?

This white paper evaluates three drill-bit categories — PDC, thermally stable polycrystalline (TSP) cutter bits, and TCI tricone bits — against the specific mechanical and thermal conditions of Indonesian and Philippine geothermal wells. For each tool type, we identify the precise failure mechanism, the formation conditions under which it applies, and the operating parameters that maximise service life.

May 10,2026

PDC Cutter Selection for Shale Gas Drilling: Why 1308 Is Not Always the Right Answer

In shale gas horizontal wells — from the Longmaxi Formation in Sichuan to the Barnett Shale in Texas — drillers frequently encounter a characteristic failure mode: 1308 PDC cutters chip, fracture, or delaminate within a single bit run, forcing premature trips.

May 07,2026

DTH Drill Bit Selection for East Africa's Hard Basement Formations

In East African granite gneiss formations (150–220 MPa), effective water well drilling requires K4-profile or ballistic-button DTH bits at 45–65 bar delivered air pressure, with gauge-protected outer diameters.