Downhole Tools Patents: Who Leads, Where Filing Is Cooling 2026
- Filing has been declining since the 2018 peak of 200, down to a partial 7 in the most recent year — a corpus that is consolidating rather than growing.
- Every tracked assignee shows double-digit negative YoY momentum, with drops from -85% to -97%, suggesting the field's dominant filers are pulling back together, not being displaced by a new entrant.
- E21B carries 4,335 of 4,417 records, while G01V geophysics claims sit at 1,215 — a large but secondary layer worth checking before drafting telemetry or sensing claims.
Filing growth compares 2021 (121 records) with 2024 (105) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 4,417 records in scope (CR5), not by the ranked leaders only.
What this patent landscape covers
This landscape tracks patent families filed against measurement-while-drilling, logging-while-drilling and related downhole tool technology, filtered to records that also address high-temperature/high-pressure operation, telemetry, vibration and shock tolerance, downhole power supply, or directional drilling. The dataset spans 4,417 patent families published between 2015 and mid-2026, classified under E21B, G01V and adjacent IPC subclasses. Publication lags filing by roughly 18 months, so the most recent filing year is understated by design.
The picture that emerges is a mature, IP-dense field concentrated around a small set of long-established oilfield services filers, with a filing curve that has been trending down since 2018 rather than up. That combination — high density plus falling filing rates — points toward a field where claim space in the core mechanical and telemetry approaches is largely staked out, and where any remaining opportunity sits in adjacent or under-claimed sub-branches rather than in the core.
Let an AI agent run this analysis on your own technology
Pick a task. Every answer cites the patents behind it.
Filing trends and technology composition
Two views of the same dataset: how filing volume has moved year over year, and how records distribute across IPC subclasses. Both point to a field where the core mechanical claim space is well occupied and growth has flattened.
A decade of declining filing activity
Filings rose to a peak of 200 in 2018, sat near the midpoint at 146 in 2022, and have fallen to 7 in the most recent partial year. Even allowing for publication lag, the multi-year trajectory is downward, not a temporary dip.
E21B dominates; G01V is the largest secondary layer
E21B (earth and rock drilling) covers 4,335 of 4,417 records — nearly the entire corpus. G01V (geophysics and gravity surveying) appears in 1,215 records, indicating heavy overlap between drilling-tool claims and downhole sensing/surveying claims. Smaller subclasses — G01N, G06F, G01R, G01B, H04B, H04L — each sit under 130 records, marking thinner but present activity in materials testing, digital processing and telemetry hardware.
Shares are the percentage of the 4,417 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Downhole Tools and Drilling Electronics with Eureka
This page is one run against one query. Ask Eureka your own question about downhole tools and drilling electronics and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a representative filing
US7506700B1 — Method for steering mud motors and retrieving measurement while drilling devices
The patent describes securing a directional drilling tool to a retrievable, replaceable measurement-while-drilling device, orienting that device with a spear axis on an orientation spear point, and lowering the spear point into a non-magnetic drill collar above a mud motor. An orienting mule-shoe stinger attached to a gyroscopic device is inserted over the spear point to align the gyroscopic device along the spear axis, enabling mud-motor steering.Filed by HARVEY, MICHAEL S.; granted 2009-03-24.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5899958A | Logging while drilling borehole imaging and dipmeter device | 462 |
| 2 | US6732817B2 | Expandable underreamer/stabilizer | 428 |
| 3 | US5064006A | Downhole combination tool | 428 |
| 4 | US4933640A | Apparatus for locating an elongated conductive body by electromagnetic measurement while drilling | 408 |
| 5 | US5947213A | Downhole tools using artificial intelligence based control | 382 |
| 6 | US6230557B1 | Formation pressure measurement while drilling utilizing a non-rotating sleeve | 346 |
| 7 | US5517464A | Integrated modulator and turbine-generator for a measurement while drilling tool | 333 |
| 8 | US5678643A | Acoustic logging while drilling tool to determine bed boundaries | 329 |
| 9 | US6192748B1 | Dynamic orienting reference system for directional drilling | 318 |
| 10 | US6476609B1 | Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone | 300 |
Citation counts reflect influence within the searched corpus over time and favour older filings; treat them as a marker of foundational status, not of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the numbers mean for strategy
Three read-throughs from the filing trend, IPC composition and citation pattern that matter for anyone deciding where to file or license next.
The core is contracting, not just maturing
Filing peaked at 200 in 2018 and has fallen every year since, reaching a partial count of 7 in the latest year. This is consistent across every tracked assignee, not just one filer pulling back — a signal that the mechanical and telemetry approaches at the core of MWD/LWD tool design are largely settled.
Claim space is almost entirely mechanical drilling art
E21B accounts for nearly the whole corpus, with G01V geophysics claims layered across 1,215 records. Digital transmission subclasses (H04B, H04L) sit at just 38 records each, suggesting telemetry-protocol and data-transmission claims are comparatively thin relative to the mechanical tool art.
Every major filer is slowing at once
The largest oilfield services filers each show sharp year-on-year declines in the latest period. That uniform pullback, rather than a shift in share between competitors, indicates a market-wide slowdown in new filing rather than one company ceding ground to another.
Foundational patents predate the current filing slowdown
The most-cited records in the corpus, including US5899958A and US6732817B2, are older filings whose citation counts have accumulated over decades. High citation counts here mark historical influence on the field's baseline tool designs, not which claims matter most for a 2026 filing decision.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to downhole tools and drilling electronics, with the prior art for and against each one.
Who is still filing, and where the gaps sit
Filing in this field is concentrated among a small set of oilfield services groups and their affiliated entities, with co-assignee pairs pointing to internal corporate restructuring as much as collaboration.
Co-filing reflects corporate structure, not partnership
The strongest co-assignee pairs link affiliated entities under the same corporate umbrella rather than independent collaborators, with the top pair co-filing 311 times. This pattern is typical of large oilfield services groups that file under multiple regional or historical subsidiary names.
Leading filers have slowed to single digits
The most active assignees in the latest partial year are filing in the single digits, down sharply from prior years. None of the tracked leaders shows growth; the most active recorded just 6 filings against a -85% year-on-year change.
US, PCT and Canada anchor the filing map
The United States leads as receiving office with 1,670 records, followed by WIPO/PCT filings at 650 and Canada at 544. UK, EPO and Australian offices each carry meaningful but smaller shares, indicating this is primarily a North America-anchored filing strategy with broad international coverage layered on top.
| Assignee | Recent year | YoY |
|---|---|---|
| Schlumberger Technology Corporation | 6 | -85% |
| Halliburton Energy Services, Inc. (US) | 1 | -91% |
| Schlumberger Technology, LLC | 1 | -97% |
| Schlumberger Limited | 1 | -97% |
| Schlumberger Canada Limited | 1 | -96% |
| Baker Hughes Holdings LLC | 0 | — |
| Schlumberger Holdings Limited | 0 | — |
| Prad Research and Development Limited | 0 | — |
Where to take this analysis
The trend and composition data point to specific next steps depending on whether the goal is freedom-to-operate, licensing, or new filing strategy.
Check freedom-to-operate against the top-cited core patents
Before drafting claims in mechanical MWD/LWD tool design, review the highest-citation records in this corpus — they anchor much of the surrounding prior art even where the original filings are decades old.
Explore citation data in Eureka →Probe the thinner IPC branches for open claim space
Digital transmission and signal-processing subclasses carry a fraction of the filing volume seen in E21B, which may mean less-crowded claim territory around telemetry protocol and data handling for downhole tools.
Run an IPC gap analysis in Eureka →Track assignee momentum before assuming continued dominance
Every leading filer in this dataset shows a steep year-on-year decline. Confirm whether that reflects a genuine slowdown or a shift toward trade secrecy before treating any single assignee as a fixed market leader.
Monitor assignee activity in Eureka →Common questions about downhole tool patents
Filing in this field is concentrated among a small group of large oilfield services companies and their affiliated entities, several of which appear under multiple corporate or regional names in patent records. Co-assignee data shows the strongest pairings are between affiliates of the same corporate group rather than between independent competitors. Because names change across mergers, subsidiaries and regional filing entities, ranking tables should be read at the corporate-family level rather than by individual assignee name alone.
No. Filing peaked at 200 records in 2018 and has declined in most years since, reaching a partial count of 7 in the most recent year tracked. Every major assignee in the dataset shows a negative year-on-year change in the latest period, ranging from -85% to -97%. This points to a field that is consolidating around established designs rather than expanding into new claim territory, though publication lag means the very latest year understates true filing activity.
E21B (earth and rock drilling for wells) dominates the corpus at 4,335 of 4,417 records. G01V (geophysics and gravity surveying) is the largest secondary layer at 1,215 records, reflecting heavy overlap between mechanical drilling tool claims and downhole sensing and surveying claims. Smaller but present activity appears in material analysis, digital processing and telemetry-hardware subclasses, each under 130 records.
The thinner IPC branches — digital transmission, signal processing and electric measurement subclasses — carry far fewer records than the core mechanical drilling art, which suggests comparatively less-crowded claim space around telemetry protocols, downhole battery thermal management and vibration-isolating sensor mounts. That said, thin filing volume does not guarantee an easy path; it can also reflect that solutions are being kept as trade secrets rather than patented. A freedom-to-operate search focused on the specific sub-claim is still necessary before relying on apparent white space.
US7506700B1 claims a method for steering a mud motor while it is attached to a retrievable, replaceable measurement-while-drilling device, using an orientation spear point lowered into a non-magnetic drill collar and a gyroscopic device aligned via a mule-shoe stinger. It is a method claim tied to a specific mechanical orientation and retrieval sequence, not a broad claim over MWD steering generally. Designs that steer mud motors through different retrieval mechanisms or orientation hardware are likely to sit outside its specific claim scope, though a formal claim chart is needed to confirm freedom-to-operate for any specific product.
Research Downhole Tools and Drilling Electronics in depth with Eureka
Go past this page: query the whole downhole tools and drilling electronics corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.