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Oilfield services and equipment

The 27 companies in this industry listed on the NYSE and Nasdaq are worth $225 bn combined; the largest are SLB (Schlumberger) (SLB), Baker Hughes (BKR) and Tenaris (TS). For each one: what it does, revenue, margin, free cash flow over the last five years and a score from 0 to 10.

Data as of October 2026

Open contest
27 companies value 225 bn revenue 135 bn margin 7.8% free cash flow 15 bn avg. score 4.7
SLB holds 32.4% of the group's value, 1.3x the runner-up
Rank Ticker Company Share Value Revenue Margin FCF 5 years FCF/px Yield What it does · why it is here
1 SLB SLB (Schlumberger)
United States · score 6.9
32% 73 bn 36 bn 8.5% 4.8 bn 6.6% 2.3% Services, equipment and technology for oil and gas · World's largest oilfield services provider, present in ~100 countries
2 BKR Baker Hughes
United States · score 6.1
25% 55 bn 28 bn 11.2% 3.1 bn 5.6% 1.6% Energy technology equipment and services · Leader in LNG equipment and turbomachinery
3 TS Tenaris
Luxembourg · score 7.4
14% 31 bn 12 bn 16.5% 2.6 bn 8.3% 2.9% Seamless steel pipe for oil and gas · World's largest maker of seamless pipes for oil wells
4 HAL Halliburton
United States · score 6.4
12% 28 bn 22 bn 7.2% 1.7 bn 6.3% 2.1% Oilfield services and equipment · Leader in hydraulic fracturing in North America
5 NOV NOV Inc.
United States · score 6.3
3% 6.7 bn 8.6 bn 1.1% 0.6 bn 8.4% 2.3% Equipment and technology for oil drilling · Drilling equipment and rigs: close to the industry standard
6 WFRD Weatherford International
United States · score 6.7
3% 5.5 bn 4.8 bn 7.7% 0.5 bn 9.5% 1.4% Oilfield equipment and services · 4th largest global provider; focused on production and well integrity
7 WHD Cactus, Inc.
United States · score 7.6
2% 5.0 bn 1.4 bn 12.0% 0.4 bn 7.4% 0.8% Wellheads and Christmas trees for oil, since 2011 · Texas — revenue of $1.4bn
8 HP Helmerich & Payne, Inc.
United States · score 4.3
2% 3.8 bn 4.0 bn -3.4% 0.3 bn 8.3% 2.6% Drilling rigs and technology for oil wells · Oklahoma — revenue of $4bn
9 DNOW DNOW Inc.
United States · score 3.5
1% 2.9 bn 4.1 bn -4.6% 0.1 bn 4.6% — Distribution of pipe, valves, fittings and pumps for energy · Texas — revenue of $4.1bn
10 INVX Innovex International, Inc.
United States · score 6.7
1% 2.0 bn 1.0 bn 6.2% 0.2 bn 8.0% — Mission-critical engineered products for oil and gas · Texas — revenue of $998m
11 NESR National Energy Services Reunited Corp.
United States · score 6.0
1% 1.9 bn 1.6 bn 5.8% 0.2 bn 8.2% — One of the largest oilfield services providers in the Middle East · Texas — revenue of $1.6bn
12 XPRO Expro Ltd
Cayman Islands · score 5.5
1% 1.8 bn 1.6 bn 1.3% 0.1 bn 6.1% — Oil and gas well services: well testing, completions and subsea well access · Cayman Islands — revenue of $1.6bn
13 FLOC Flowco Holdings Inc.
United States · score 6.7
1% 1.7 bn 0.8 bn 6.1% 0.2 bn 12.2% — Production optimization and artificial lift in oil and gas · Texas — revenue of $820m
14 NBR NABORS INDUSTRIES LTD
Bermuda · score 4.6
1% 1.3 bn 3.2 bn 7.7% 0.0 bn 3.1% — Drilling rigs, software and well services · Bermuda — revenue of $3.2bn
15 PDS PRECISION DRILLING Corp
Canada · score 5.7
1% 1.1 bn 1.3 bn 0.2% 0.1 bn 9.4% — Onshore oil and gas well drilling and completion services in Canada, the US and the Middle East · Canada — revenue of $1.3bn
16 FET FORUM ENERGY TECHNOLOGIES, INC.
United States · score 3.4
0% 1.0 bn 0.8 bn -0.2% 0.1 bn 5.6% — Manufacturing for oil, gas, defense and renewable energy · Texas — revenue of $833m
17 HMH HMH Holding Inc
United States · score 6.2
0% 0.8 bn 0.8 bn 5.2% 0.1 bn 14.9% — Onshore and offshore oil drilling equipment and systems · Texas — revenue of $762m
18 TTI TETRA TECHNOLOGIES INC
United States · score 2.2
0% 0.8 bn 0.6 bn 1.0% -0.0 bn -1.9% — Energy services and chemicals, with completion fluids · Texas — revenue of $642m
19 OIS OIL STATES INTERNATIONAL, INC
United States · score 4.0
0% 0.5 bn 0.7 bn -16.8% 0.1 bn 10.7% — Products and services for energy, defense and industry · Texas — revenue of $646m
20 CLB Core Laboratories Inc. /DE/
United States · score 5.1
0% 0.5 bn 0.5 bn 4.7% 0.0 bn 3.3% 0.4% Reservoir description and production enhancement, since 1936 · Texas — revenue of $519m
21 OMSE OMS Energy Technologies Inc.
Singapore · score 7.0
0% 0.2 bn 0.2 bn 21.7% 0.1 bn 31.0% — Wellhead equipment in Southeast Asia and the Middle East · Singapore — revenue of $156m
22 BOOM DMC Global Inc.
United States · score 3.6
0% 0.1 bn 0.6 bn -3.4% 0.0 bn 9.5% — Products for construction, energy and industrial processing · Colorado — revenue of $588m
23 DTI Drilling Tools International Corp
United States · score 0.3
0% 0.1 bn 0.1 bn -2.0% -0.0 bn -14.7% — Rental of well drilling tools · Texas — revenue of $153m
24 DWSN DAWSON GEOPHYSICAL CO
United States · score 2.0
0% 0.1 bn 0.1 bn 3.5% 0.0 bn -6.8% — Onshore seismic data acquisition in North America · Texas — revenue of $104m
25 LSE Leishen Energy Holding Co., Ltd.
China · score 1.1
0% 0.1 bn 0.0 bn 0.1% 0.0 bn -1.3% 0.3% Oil and gas equipment and services, from China · China — revenue of $41m
26 STAK STAK Inc.
China · score 1.2
— — 0.0 bn -22.9% 0.0 bn — — Specialized vehicles and equipment for oil well production and maintenance, from China · China — revenue of $25m
27 RCON Recon Technology, Ltd
China · score 1.0
— — 0.0 bn -27.0% -0.0 bn — — Oilfield hardware, software and services in China · China — revenue of $16m

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What this is. A catalogue, not a guide. Every industry with stocks listed on the NYSE or NASDAQ, the companies contending for its leadership, what each one does according to its own annual report, and the balance sheet it filed with the SEC.

The score runs from 0 to 10 and compares each company with every other one in the almanac on cash generation, profitability, debt, dividends and consistency over the last five years. The higher it is, the better the company fares in that comparison. Curious how much each part weighs? Ask at the bottom of the page.

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