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Roller Cone · Tricone Bits

Tricone Drill Bits for Guyana

Volga Burmash tricone roller cone bits for oil and gas wells in Guyana, from offshore top-holes to production sections: open roller, sealed roller or sealed journal bearings, TCI or milled-tooth cutting structures and diameters from 104.8 mm (4 1/8") to 660.4 mm (26") on API Reg connections — with stock in Dubai and quotes that include the lead time to Georgetown.

Request a Quote IADC Selection Guide
104.8–660.4 mm API Reg IADC 111–837Y
Volga Burmash steel tricone drill bits with tungsten carbide inserts on the assembly line
Product Series

Six tricone families, matched to your formation.

Every Volga Burmash roller cone family below is drawn from the full factory range and IADC-graded so the right cutting structure, bearing system and hydraulics reach your rig. From general rotary drilling to slim-hole re-entries, there is a tricone built for the job.

GRD

Grand (GRD)

The Grand series is built for the upper sections of oil and gas wells: surface hole, conductor and protective casing. Grand bits use an open (non-sealed) roller bearing with rollers in large and small roller races, milled steel teeth with tungsten carbide hardfacing or tungsten carbide inserts, and combined jet hydraulics. They can also be used for forced drilling with turbines and keep costs low when only a small number of wells is drilled.

  • Bearing: Open (non-sealed) roller bearing
  • Sizes: 349.2 – 660.4 mm
  • IADC: 111 – 713Y
  • Application: Upper well sections, surface and conductor hole
GRDP

GrandPro (GRDP)

GrandPro bits are designed for multiple runs in upper well sections. The sealed roller bearing — with an O-ring up to 17 1/2" and two seals above 17 1/2", rollers in large and small roller races — lets the bit be stored between runs without jamming or corrosion, which makes it cost-effective for several wells or for fewer trips on long intervals. Combined jet hydraulics.

  • Bearing: Sealed roller bearing (O-ring or two seals)
  • Sizes: 339.7 – 660.4 mm
  • IADC: 115 – 715Y
  • Application: Multiple runs in upper well sections
GRDX

GrandXtreme (GRDX)

GrandXtreme is the premium series of the Grand family, designed for the most severe drilling conditions in upper well sections and built to withstand extreme drill-string loads. It uses a premium sealed journal bearing — O-ring, two floating bushings and a thrust washer of wear-resistant material, silver plated — with combined jet hydraulics.

  • Bearing: Premium sealed journal bearing
  • Sizes: 349.2 – 444.5 mm
  • IADC: 117 – 837Y
  • Application: Severe conditions in upper well sections
MTR

Motor (MTR)

Motor bits cover a wide range of applications in intermediate and production sections: rotary drilling at high loads and drilling with a hydraulic downhole motor at high rotation speed. They use a sealed journal bearing — O-ring, floating bushing and thrust washer of wear-resistant material, silver plated — with side jets, and combined jets as standard on 11 5/8"–12 1/4" (optional on 7 1/2"–11").

  • Bearing: Sealed journal bearing
  • Sizes: 190.5 – 317.5 mm
  • IADC: 117 – 837Y
  • Application: Rotary and downhole motor drilling
MTRP

MotorPro (MTRP)

MotorPro bits are specially designed for high-load drilling at high rotation speed with a downhole motor, including directional and horizontal wells. They use a premium sealed journal bearing with two seals, a floating bushing, thrust washer and cap of wear-resistant material, silver plated.

  • Bearing: Premium sealed journal bearing (two seals)
  • Sizes: 212.7 – 311.1 mm
  • IADC: 117 – 837Y
  • Application: Downhole motor, directional and horizontal wells
SLHP

SlimHolePro (SLHP)

SlimHolePro bits are built for horizontal drilling, sidetracking, re-entry jobs and final well sections, with a reinforced shirttail. They use a sealed journal bearing — O-ring, floating bushing and thrust washer of wear-resistant material, silver plated — and side jets, in sizes from 104.8 mm (4 1/8") to 171.4 mm (6 3/4").

  • Bearing: Sealed journal bearing
  • Sizes: 104.8 – 171.4 mm
  • IADC: 117 – 837Y
  • Application: Horizontal, sidetrack, re-entry, final sections
Size Range

Size Range & Specifications

Selected sizes from the Volga Burmash oil and gas catalogue, from SlimHolePro slim-hole bits to Grand and GrandPro conductor and surface bits. Sizes held in Dubai are listed in the stock table further down.

Selected catalogue sizes with pin connection; other sizes and IADC codes on request.
Bit Size (mm) Bit Size (inches) API Connection Available Series
104.84 1/8"2 3/8 API RegSLHP
120.64 3/4"2 7/8 API RegSLHP
139.75 1/2"3 1/2 API RegSLHP
152.46"3 1/2 API RegSLHP
171.46 3/4"3 1/2 API RegSLHP
190.57 1/2"4 1/2 API RegMTR
215.98 1/2"4 1/2 API RegMTR, MTRP
250.89 7/8"6 5/8 API RegMTR
311.112 1/4"6 5/8 API RegMTR, MTRP
349.213 3/4"6 5/8 API RegGRD, GRDP, GRDX
393.715 1/2"7 5/8 API RegGRD, GRDP
444.517 1/2"7 5/8 API RegGRD, GRDP, GRDX
508.020"7 5/8 API RegGRD, GRDP
558.822"7 5/8 API RegGRDP
660.426"7 5/8 API RegGRD, GRDP
Where They Drill

Tricone Bits for Guyana's Drilling Sectors

Volga Burmash roller cone bits serve four distinct drilling sectors across the country — the oil and gas series on this page offshore, and the mining and construction series onshore. Here is where each earns its place in Guyana.

Offshore Oil & GasStabroek Block surface & intermediate

The Stabroek Block fleet drills large-diameter surface and intermediate sections through soft Tertiary clastics before motor and PDC runs take over. Grand (open roller bearing) and GrandPro (sealed roller bearing) bits from 339.7 mm to 660.4 mm cover the surface and conductor sections, and Motor and MotorPro bits from 190.5 mm to 317.5 mm the intermediate sections. VBM Guyana is positioned to supply them as MRO and drilling consumables to operators and service companies under the Local Content Act 2021 framework.

Hard-Rock GoldHinterland greenstone belts

Hinterland operations around Aurora and Eagle Mountain cut through abrasive greenstone and quartz-veined hard rock that punishes ordinary bits. For blast holes in this ground, the air-flush AIRJET, AIRPRO and AIRXTREME tricone bits (171.4–406.4 mm) carry tungsten carbide insert cutting structures across soft to hard IADC codes — see our mining bits.

Quarrying & AggregatesGeorgetown construction boom

Georgetown's construction and infrastructure boom is driving demand for crushed stone, and quarry operators run air-flush tricones to break competent rock economically. VBM's AIRJET bits use open roller bearings (IADC third digit 2, air-cooled), while AIRPRO and AIRXTREME bits use sealed roller and sealed journal bearings.

Water WellsCoastal & interior community supply

Community and agricultural water-well programs along the coast and into the interior need reliable bits for unconsolidated sands and softer formations. TechnoPro (sealed roller bearing, 139.7–311.1 mm) and Standard (open roller bearing, 295.3–660.4 mm) roller cone bits and WaterDrill PDC bits from the VBM construction range are designed for water well drilling, supporting potable supply and irrigation projects in regions beyond the reach of treated mains.

Selection

Choosing the Right Tricone Bit in Guyana

The starting point for any tricone selection is the IADC code, which classifies a roller cone bit by formation hardness, cutting structure and bearing type. Matching the code to your offset data — soft, medium or hard, milled-tooth or insert — is what separates a fast, economical run from a premature trip. Our team works from your formation tops and bit records to recommend the IADC grade, hydraulics and gauge protection that fit the interval. The full method is laid out in our IADC code selection guide.

Bearing choice is the next decision. Sealed journal bearings retain lubricant and exclude solids, giving longer life and predictable performance in deeper, hotter and more abrasive sections — the configuration most offshore and hard-rock work calls for. Open roller bearings cost less and suit shallower, cooler holes and air-flush quarry duty where bit life is naturally shorter. Cutting structure follows the same logic: tungsten carbide insert (TCI) bits excel in hard, abrasive rock and longer runs, while milled-tooth steel bits are more economical and aggressive in soft, fast-drilling formations.

For sections beyond the reach of roller cones — long, hard, directional intervals where rate of penetration and footage are paramount — fixed-cutter bits take over. Explore our PDC bits for those applications, or our mining & blast-hole bits for hard-rock and quarry programs in the hinterland. Whichever route the well takes, VBM Guyana matches the bit to the formation and supplies it as registered MRO and drilling consumables.

Selection guide

Which tricone bit for which formation in Guyana

The right tricone depends on rock hardness and abrasiveness, hole size and the rig. This is how those translate into series and IADC codes across Guyana's drilling sectors.

By application

  • Offshore top-hole sections (Stabroek Block): soft, poorly consolidated Tertiary clays and sands; milled-tooth bits, IADC 1-1-x to 1-3-x, from the Grand and GrandPro series (up to 26") and GrandXtreme (up to 17 1/2").
  • Onshore exploration (Takutu Basin): mixed sandstones and shales; TCI series 4 and 5 with sealed journal bearings, and the Motor and MotorPro series when running a downhole motor.
  • Hard-rock gold in the greenstone belts: abrasive quartz veins and metavolcanics; TCI series 6 to 8 with gauge protection — see our mining drill bits.
  • Quarries (granite and diabase for aggregates): TCI series 7 and 8 with conical inserts.
  • Coastal water wells: unconsolidated sands and clays of the coastal plain; TechnoPro or Standard roller cone bits or WaterDrill PDC bits from our construction bits range.

The IADC code in 30 seconds

A tricone IADC code has three digits and an optional letter. The first digit is the cutting structure and hardness: 1–3 milled steel teeth, 4–8 tungsten carbide inserts, from soft to extremely hard. The second refines hardness within that series (1–4). The third is the bearing: 1–3 open roller, 4–5 sealed roller, 6–7 sealed journal, with gauge protection on 3, 5 and 7. The letter adds features such as X (chisel inserts) or Y (conical inserts). A 537X tricone bit is therefore a TCI bit for soft-to-medium formations with a sealed journal bearing, gauge protection and chisel inserts. More in our IADC code selection guide.

What we hold in stock

Our Dubai warehouse carries Motor (MTR) tricone bits from 7 7/8" to 12 1/4", MotorPro (MTRP) in 8 3/8" and 8 1/2", GrandPro (GRDP) from 13" to 22", Grand (GRD) and GrandXtreme (GRDX) in 17 1/2", and SlimHolePro (SLHP) slim-hole bits. The table below shows model, IADC code and quantity; anything not in stock is manufactured to order at the Volga Burmash plant. For offshore context, read the Stabroek Block supply guide.

In stock in Dubai

Tricone Bits in Stock in Dubai

103 pcs across 66 line items, ready to ship from our warehouse in Dubai (United Arab Emirates). Stock list updated 23 September 2026. Prices on request.

Shipping to Guyana from Dubai by air or sea freight. Exact lead time is confirmed with every quote.

Tricone bits for oil & gas: Dubai stock as of 23 September 2026
ModelSizeIADCApplicationAvailableQuote
SLHP5374 1/2" (114.3 mm)537XOil & gas2 pcsQuote
MTR5177 7/8" (200 mm)517XOil & gas2 pcsQuote
MTR5378 1/2" (215.9 mm)537XOil & gas4 pcsQuote
MTR1378 5/8" (219.1 mm)137Oil & gas3 pcsQuote
MTR6278 5/8" (219.1 mm)—Oil & gas10 pcsQuote
MTR6278 3/4" (222.3 mm)627YOil & gas4 pcsQuote
MTR4179 7/8" (250.8 mm)417XOil & gas2 pcsQuote
MTR42712 1/4" (311.1 mm)427XOil & gas2 pcsQuote
MTR617X12 1/4" (311.1 mm)—Oil & gas2 pcsQuote
GRDP54515 1/2" (393.7 mm)545XOil & gas3 pcsQuote
GRDP13516" (406.4 mm)135Oil & gas2 pcsQuote
GRDP11517" (431.8 mm)115Oil & gas2 pcsQuote
GRDP11517 1/2" (444.5 mm)115Oil & gas3 pcsQuote
GRDP31517 1/2" (444.5 mm)315Oil & gas2 pcsQuote
GRDX53717 1/2" (444.5 mm)537XOil & gas8 pcsQuote

Showing the 15 line items with the most units out of 66. “—” under IADC: code not confirmed in the catalogue for that model (datasheet on request).

Request a quoteSee full Dubai stock list
FAQ

Tricone drill bit FAQ

What is a tricone drill bit?

A drill bit with three cones that rotate on bearings and crush and gouge the rock as the drill string turns. It is the standard tool for blast holes and for hard, fractured or abrasive formations where a PDC bit would be damaged by impact.

Do you have tricone bits in stock for Guyana?

Yes, the models in the table. We ship from our Dubai warehouse by air or sea; the exact lead time is confirmed in each quotation. Sizes or IADC codes that are not in stock are made to order.

How much does a tricone bit cost?

Price depends on size, series, bearing type and quantity, so we do not publish a price list. Send us the hole size, formation and quantity through the form and we reply with price, lead time and the datasheet.

Milled-tooth or TCI tricone?

Milled-tooth bits drill fastest and cheapest in soft formations such as offshore top-hole clays; tungsten carbide insert (TCI) bits last much longer in medium to hard and abrasive rock such as greenstone and granite.

Request a Quote

Let's spec the right bit for your project.

Tell us your hole size, formation and target depth. As the authorized Volga Burmash distributor in Guyana, we'll match a tricone, PDC or mining bit and respond with availability and pricing.

info@vbm.gy
  • Direct supply from the Volga Burmash plant
  • IADC formation-matched recommendations
  • Local Content registered-supplier support

Or email us directly at info@vbm.gy