Downhole Tool Condition Monitoring Patent Landscape
Downhole tool condition monitoring is a concentrated field dominated by oilfield services majors — Halliburton, Schlumberger, and Baker Hughes — whose combined weight leaves limited room for independent entrants. Annual filing volume peaked in 2021 and has since eased, placing the field in a post-peak phase, though adjacent branches in AI-based computing and real-time data transmission remain sparsely covered.
Halliburton leads a tightly held field dominated by oilfield services majors
Halliburton Energy Services leads the ranking with 73 patent records, more than double the next-ranked entity, Schlumberger Tech Corp at 38 patent records. Baker Hughes Co and Services Petroliers Schlumberger SA hold the third and fourth positions at 19 and 18 patent records respectively.
The top five filers account for 52% of the hundred largest filers’ combined total, signaling meaningful but not extreme concentration. A clear tier gap separates the top three from mid-tier players such as Erdos Miller Inc and Black Diamond Oilfield Rentals LLC, each holding 15 patent records.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Halliburton Energy Services Inc | 73 | |
| 2 | Schlumberger Tech Corp | 38 | |
| 3 | Baker Hughes Co | 19 | |
| 4 | Services Petroliers Schlumberger SA | 18 | |
| 5 | Erdos Miller Inc | 15 | |
| 6 | Black Diamond Oilfield Rentals LLC | 15 | |
| 7 | Schlumberger Canada Ltd | 14 | |
| 8 | ExxonMobil Upstream Research Company | 12 | |
| 9 | Sanvean Technologies LLC | 11 | |
| 10 | GeoQuest Systems BV | 10 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Schlumberger Technology BV | 10 | |
| 12 | BP Exploration Operating Co Ltd | 9 | |
| 13 | BP Corp North America Inc | 9 | |
| 14 | Saudi Arabian Oil Company | 8 | |
| 15 | Vermeer Manufacturing Co | 6 | |
| 16 | Baker Hughes Oilfield Operations LLC | 5 | |
| 17 | IntelliServ International Holding Ltd | 5 | |
| 18 | Globaltech Corp Pty Ltd | 4 | |
| 19 | APS Technology LLC | 3 | |
| 20 | Adsit Rhys Kevin | 2 |
Halliburton’s scale advantage — nearly double Schlumberger’s closest affiliate — suggests deep institutional investment in sensor-based well monitoring and adaptive drilling systems. The Schlumberger group’s combined presence across multiple corporate vehicles (Schlumberger Tech Corp, Services Petroliers Schlumberger SA, Schlumberger Canada Ltd, GeoQuest Systems BV, and Schlumberger Technology BV) rivals Halliburton when aggregated.
Filings from approximately the last 18–24 months are under-counted due to standard patent publication lag and should not be read as a definitive signal of current activity levels. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity peaked in 2021 and has eased; E21B drilling classes dominate the technology mix
The filing trend reveals a field that built up through 2020–2021 and has since contracted, while the IPC composition confirms heavy concentration in E21B (earth and rock drilling) with sparse coverage of adjacent sensing, transmission, and AI classes.
Annual filing trend
Annual filings rose from 13 in 2017 to a peak of 22 in 2021, then declined to 13 in 2023 before recovering partially to 16 in 2024. The 2025 figure of 5 and the zero for 2026 reflect publication lag rather than actual activity; the post-2023 period should be treated as incomplete.
↗ Hover for values · click a bar to ask EurekaTechnology composition
E21B (earth and rock drilling — wells) accounts for the dominant share of IPC coverage by a wide margin at 230 records, dwarfing all other classes. G01V (geophysics and gravity surveying) is the next largest at 29 records. H04B (transmission), G06N (AI-based computing), and G01P (velocity and acceleration) each contribute fewer than 12 records, highlighting how narrowly the field is currently defined around core drilling mechanics.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Horizontal directional drilling system and method
A horizontal directional drilling method includes operation of a HDD machine to power a drill string terminating at a drill head to create an underground borehole extending at least partially horizontally between an entry point and an exit point. A utility line and a pair of insulated wires are attached to the drill string at the exit point. An observation… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Drilling systems with sensors for determining prop… | 859 |
| 2 | Apparatus and method for the dynamic measurement o… | 122 |
| 3 | Drilling system with sensors for determining prope… | 117 |
| 4 | Downhole tool delivery system with self activating… | 108 |
| 5 | Method and apparatus for performing diagnostics in… | 98 |
| 6 | Downhole Tool Delivery System | 97 |
| 7 | Integrated well drilling and evaluation | 89 |
| 8 | Method and apparatus for performing diagnostics in… | 87 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
The combination of a post-peak lifecycle, high incumbency concentration, and clear gaps in AI and transmission classes shapes the risk-reward calculus for new entrants and existing players seeking to extend their portfolios.
Post-peak field with easing annual volume
The lifecycle evidence classifies this field as in decline, with annual filings having eased back from the 2021 peak of 22. On a multi-year basis the corpus still reflects accumulated depth, but the directional signal for new broad-claim filings is unfavorable. R&D investment is better directed at differentiated sub-domains — particularly AI-assisted diagnostics and wireless transmission — rather than competing on core E21B drilling sensor claims already densely populated by the majors.
Post-peak · 2021 highOilfield services majors hold a commanding position
The top five filers account for 52% of the hundred largest filers’ combined total, and the top three players (Halliburton, Schlumberger group entities, Baker Hughes) collectively hold a large share of the most-cited work. This structural concentration means freedom-to-operate analysis is mandatory for any new entrant. The mid-tier — Erdos Miller, Black Diamond Oilfield Rentals, Sanvean Technologies — demonstrates that niche specialty players can accumulate meaningful positions in transmission-focused sub-domains.
High concentrationSchlumberger’s corporate family is the most active co-filing ecosystem
The most active co-filing pair is Black Diamond Oilfield Rentals LLC and Erdos Miller Inc with 15 joint filings, reflecting a close equipment-rental and electronics partnership. Within the Schlumberger group, Schlumberger Tech Corp, Services Petroliers Schlumberger SA, Schlumberger Canada Ltd, GeoQuest Systems BV, and Schlumberger Technology BV co-file extensively across 5–11 filings per pair, effectively operating as a coordinated internal network. Halliburton shows no prominent external co-filing, consistent with its in-house development model.
Intra-group co-filingUS-centric protection with selective PCT and European coverage
The United States leads jurisdiction coverage with 99 patent records. WIPO PCT filings (39) and Canadian filings (28) are the next largest, followed by Europe via EPO (24) and the United Kingdom (21). Norway (9) reflects the North Sea operational base of several filers. Coverage in China (2) and the Middle East (UAE: 1) is minimal despite significant drilling activity in those regions, suggesting a potential jurisdictional gap for operators with assets in those geographies.
US-dominant · low China coverageGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Black Diamond Oilfield Rentals LLC | Erdos Miller Inc | 15 |
| Schlumberger Tech Corp | Schlumberger Canada Ltd | 11 |
| Schlumberger Tech Corp | Services Petroliers Schlumberger SA | 11 |
| Services Petroliers Schlumberger SA | Schlumberger Canada Ltd | 11 |
| Services Petroliers Schlumberger SA | GeoQuest Systems BV | 10 |
| Services Petroliers Schlumberger SA | Schlumberger Technology BV | 8 |
| Schlumberger Tech Corp | Schlumberger Technology BV | 6 |
| Schlumberger Canada Ltd | Schlumberger Technology BV | 6 |
| Schlumberger Tech Corp | GeoQuest Systems BV | 5 |
| Schlumberger Canada Ltd | GeoQuest Systems BV | 5 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Halliburton leads on volume; Schlumberger entities are surging as new recent entrants
Two distinct competitive profiles emerge: Halliburton’s large but declining recent output versus multiple Schlumberger corporate vehicles each classified as new recent entrants, suggesting the Schlumberger group may be restructuring and re-attributing filings across its entities.
Halliburton Energy Services
Halliburton Energy Services holds 73 patent records — the largest position in the field by a wide margin — with technology emphasis squarely on E21B subclasses covering downhole measurement (E21B 47), adaptive drilling (E21B 44), and advanced drilling methods (E21B 41). Recent filing momentum is sharply negative at –77% versus the prior period, signaling that Halliburton’s portfolio is consolidating rather than expanding in this specific domain.
73 patent recordsSchlumberger Tech Corp
Schlumberger Tech Corp holds 38 patent records and is classified as a new recent entrant in momentum terms, which likely reflects entity-level reorganization within the broader SLB group rather than a genuinely new market participant. Its technology focus mirrors the field’s dominant E21B subclasses — E21B 47 (38 records), E21B 44 (19 records), and E21B 7 (16 records) — indicating direct overlap with Halliburton’s core claims territory. When aggregated across all Schlumberger-affiliated entities, the group’s collective position approaches Halliburton’s scale.
38 patent records| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Halliburton Energy Services Inc | 5 | ▼ -77% |
| Schlumberger Tech Corp | 20 | ▲ new entrant |
| Services Petroliers Schlumberger SA | 10 | ▲ new entrant |
| Black Diamond Oilfield Rentals LLC | 2 | ▼ -85% |
| Erdos Miller Inc | 2 | ▼ -85% |
| Schlumberger Canada Ltd | 8 | ▲ new entrant |
| Schlumberger Technology BV | 1 | ▲ new entrant |
| GeoQuest Systems BV | 9 | ▲ new entrant |
Under-served adjacent branches in AI, transmission, and control systems
Five IPC classes each account for 2–3% of the total patent-record base, indicating relative sparsity compared to the E21B core. These branches are observations of low current coverage; some carry plausible technical value for downhole monitoring applications.
G06N · AI and machine learning models
With only 8 patent records mapped to G06N (computing based on AI models), the application of machine learning for real-time downhole anomaly detection and remaining useful life prediction is sparsely covered. Given the demonstrated value of AI in analogous industrial condition-monitoring domains and the availability of increasingly capable edge-computing hardware for downhole environments, this branch has plausible technical value. Entry paths include predictive failure models trained on existing sensor time-series and physics-informed neural networks for drill-string dynamics — areas where specialty AI firms or academic spinouts could differentiate from the E21B-dominant incumbents.
Search this in Eureka →G05B · Control and regulating systems
G05B (control and regulating systems) carries only 6 patent records, suggesting that closed-loop adaptive control architectures — where downhole sensor data feeds back directly into surface or downhole actuation — remain underdeveloped in the patent literature. This branch sits at the intersection of the dominant E21B domain and real-time automation, which is a technically meaningful combination for reducing tool wear and non-productive time. Players already active in E21B 44 (adaptive drilling) would have a natural adjacency claim here, but the current sparsity leaves room for entrants with control-systems expertise.
Search this in Eureka →How leaders differ by technology route across E21B subclasses and adjacent domains
Route coverage across the main technology branches in the current evidence set.
| Player | E21B 47 · Earth & rock drilling (wells) | E21B 44 · Earth & rock drilling (wells) | E21B 7 · Earth & rock drilling (wells) | E21B 21 · Earth & rock drilling (wells) | E21B 41 · Earth & rock drilling (wells) |
|---|---|---|---|---|---|
| Halliburton Energy Services Inc | Strong · 69 | Strong · 38 | Strong · 37 | Moderate · 22 | Strong · 38 |
| Schlumberger Tech Corp | Strong · 38 | Moderate · 19 | Moderate · 16 | Emerging · 5 | Absent |
| Services Petroliers Schlumberger SA | Strong · 18 | Strong · 11 | Strong · 10 | Absent | Absent |
| Baker Hughes Co | Strong · 18 | Moderate · 4 | Absent | Moderate · 6 | Moderate · 4 |
| GeoQuest Systems BV | Strong · 10 | Strong · 10 | Strong · 10 | Absent | Absent |
| Schlumberger Canada Ltd | Strong · 14 | Moderate · 7 | Moderate · 6 | Absent | Absent |
| Erdos Miller Inc | Strong · 15 | Moderate · 4 | Absent | Absent | Absent |
Frequently asked questions
The evidence base covers 129 patent families in scope for downhole tool condition monitoring.
Halliburton Energy Services Inc leads with 73 patent records, nearly double the next-ranked entity, Schlumberger Tech Corp at 38 patent records.
No. Annual filings peaked at 22 in 2021 and have since eased, placing the field in a post-peak phase. The evidence shows a recent-window growth figure of -11%, though figures from the most recent 18–24 months are under-counted due to publication lag.
The United States dominates with 99 patent records. WIPO PCT (39), Canada (28), Europe via EPO (24), and the United Kingdom (21) follow. China and the Middle East have minimal coverage, representing a potential jurisdictional gap given drilling activity in those regions.
E21B (earth and rock drilling — wells) is overwhelmingly dominant at 230 patent records. G01V (geophysics, 29), H04B (transmission, 11), G06N (AI computing, 8), and G01P (velocity/acceleration, 7) are the next largest but each represent only a small share of total coverage.
The most technically promising under-served branches are G06N (AI and machine learning models, 8 patent records) and G05B (control and regulating systems, 6 patent records), both of which have plausible application to real-time downhole diagnostics and closed-loop adaptive control. H04B (transmission) and H04L (digital data networks) are also sparsely covered relative to the E21B core.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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