Indian downhole completion tool manufacturers compared: API status, plants, catalogue and lead times

Indian downhole tool manufacturers compared on the public record

Indian downhole completion tool manufacturers compared: API status, plants, catalogue and lead times

Six Indian completion tool manufacturers, checked on the API Composite List and the Ministry of Corporate Affairs company registry on 25 September 2026. No winner is declared, and the publisher, Maximus OIGA Private Limited, is checked the same way as everyone else.

What does the public record show for Indian downhole completion tool manufacturers

The API Composite List, on 25 September 2026, showed active licence numbers for four of six Indian downhole tool manufacturers compared: Completion Oil Tools Private Limited, Gradwell Oilfield Private Limited, Oilmec Drilling Equipments Private Limited and Parveen Industries Pvt Ltd. DIC Oil Tools and Maximus OIGA Private Limited returned no record. One of the six publishes lead times.

The takeaways in brief follow.

What are the key takeaways

The next section explains how these facts were gathered.

How was this comparison built, and what was checked

This comparison covers six Indian makers of downhole completion tools, checked on two public registers and on each company's own website on 25 September 2026. That date is the query date for every fact on the page.

The six are Completion Oil Tools Private Limited, DIC Oil Tools, Gradwell Oilfield Private Limited, Maximus OIGA Private Limited, Oilmec Drilling Equipments Private Limited and Parveen Industries Pvt Ltd. Each lists downhole completion tools such as packers, bridge plugs and flow control equipment, and each appears in Indian search results for completion tool makers or in the publisher's own competitor set. The publisher, Maximus OIGA Private Limited, is included and checked by the same rules.

The method has four steps.

1. Register licence search: the API Composite List, for licence numbers, statuses and status dates.

2. Company registry lookup: Ministry of Corporate Affairs company master data, read through public mirrors, for the CIN, the date of incorporation and the state.

3. Company websites: each company's own pages, for plants, catalogue, test facilities and lead times.

4. Matching and look-alike check: each search term was the company's distinctive name word, such as "Gradwell", and every result was matched to the company by legal name and city.

Look-alike names were set aside by hand. The search for "Oilmec" also returns Soilmec S.p.A., a company in Italy. Soilmec S.p.A. is a different business and is not counted here.

Companies appear in alphabetical order by legal name everywhere on this page, and the order is not a ranking. A fact counts as published only if it appears on a page a reader can open today. A fact not found on the pages checked is reported as "not found on the pages checked", not as proof that it does not exist. There is no winner: the page gives no ranking, score or verdict.

How do the six companies compare on the public record

The table below shows what each company's public record showed, in alphabetical order, and each row names its source. This completion tool manufacturers India comparison is built from registers and company websites only, so a buyer can copy it into an approval file.

Indian downhole tool manufacturers compared: public record, checked 25 September 2026

The licence numbers in detail follow, company by company.

What does the API Composite List show for each company

The API Composite List is the public register the American Petroleum Institute (API) keeps of companies licensed under the Monogram Program that API runs, and of registered quality management systems. On 25 September 2026 the register showed the following for each company, in alphabetical order.

Completion Oil Tools Private Limited: 4 active, Alwar

Completion Oil Tools Private Limited holds 4 active licence numbers at Alwar. Two further records are not active: 19AC-0074 at Applicant status and 5CT-2122 Withdrawn. The same search also returns Completion Oil Tools Manufacturing L.L.C., Abu Dhabi, with four records at Applicant status dated 22 Apr 2026. This page does not establish whether the two companies are connected.

DIC Oil Tools: no record returned

Searches for "DIC Oil" and "Dedicated Impex" returned no record. DIC Oil Tools describes its products as designed and sourced through a network of manufacturing partners, and says those partners hold API and ISO credentials. For a sourced product, the licence that counts is the one held by the actual manufacturer, so a buyer asks the supplier to name that manufacturer and checks its number on the register.

Gradwell Oilfield Private Limited: 5 active, Gurugram

Gradwell Oilfield Private Limited holds 5 active licence numbers at Gurugram, all with the status date 30 Mar 2026. One record is not active: 5CT-2144 Withdrawn. The number 19AC-0065 is the only active 19AC number among the six companies.

Maximus OIGA Private Limited: no record returned for the legal name

Searches for the legal name Maximus OIGA Private Limited, for "OIGA" and for "SpectraMax" returned no record. A partial-name search for "Maximus" returns a different registrant name, Maximus Completion Systems, Vadodara, with seven records, none active: 11D1-0076 and Q1-2172 Canceled, and 14L-0111, 19AC-0049 and 5CT-2389 Withdrawn, all dated 24 Jun 2024, plus two older withdrawn quality-system records. This page does not establish a connection between that name and Maximus OIGA Private Limited, and makes no licence claim for Maximus OIGA Private Limited.

Oilmec Drilling Equipments Private Limited: 4 active, Palwal

Oilmec Drilling Equipments Private Limited holds 4 active licence numbers at Palwal. Two records are not active: 5CT-1666 and 10D-0047, both Withdrawn.

Parveen Industries Pvt Ltd: 26 active, Igatpuri, Kundli and Rabale

Parveen Industries Pvt Ltd holds 26 active licence numbers across three register locations. The Igatpuri numbers are registered as "M/S Parveen Industries Private Limited", and the company's own site names Igatpuri as one of its licensed facilities. A fourth location, Delhi, shows 11 records, none active. The company also holds numbers under the prefixes 6A, 7-1, 7-2, 11B, 14A, 16A, 16C, 19G1, 19G2 and 19G3; API's own specification pages give the scope of each.

Igatpuri: 9 active

Kundli, Sonepat: 7 active

Rabale, Navi Mumbai: 10 active

What the specification prefixes mean

Two reading traps

The company registry, the other public check, comes next.

What does the company registry show for each company?

A Corporate Identification Number (CIN) is the 21-character number the Ministry of Corporate Affairs gives every company registered in India. The CIN encodes whether the company is listed or unlisted (the first letter), its industry code, its state of registration and its year of incorporation, followed by its company type and registration number.

The date of incorporation belongs to the legal entity. A business can trade before its current entity was formed, as a partnership or through a predecessor company, or re-register in another state: the CIN for Oilmec Drilling Equipments Private Limited changed its state code from HR to DL. A buyer who needs trading history asks the vendor for the predecessor entity's registration and checks it the same way.

The state in the CIN is the registered office, which can differ from where the plant is, as with a Karnataka registration and a Gujarat plant.

The next question is where each company makes its tools.

Where does each company manufacture

A licence on the API Composite List is tied to a named manufacturing site, so the register's city is an independent check on where a company says it makes its tools. Where both sources exist, each line below gives the register city and the published site address.

• Completion Oil Tools Private Limited: register city Alwar; site address RIICO Industrial Area, Khushkhera, Rajasthan. The site states a 53,820 sq ft facility.
• DIC Oil Tools: no manufacturing address found on the pages checked. The site describes a network of manufacturing partners.
• Gradwell Oilfield Private Limited: register city Gurugram; site address Village Uncha Mazra, Tehsil Pataudi, District Gurugram, Haryana. The site states a 30,000 sq ft facility.
• Maximus OIGA Private Limited: the site states the SpectraMax line is built at its plant at Manjusar / Savli GIDC, Vadodara, Gujarat. No register city applies, as the previous two sections show, and the registered office is in Karnataka.
• Oilmec Drilling Equipments Private Limited: register city Palwal; site address Village Prithla, Tehsil and District Palwal, Haryana.
• Parveen Industries Pvt Ltd: register cities Igatpuri, Kundli (Sonepat) and Rabale (Navi Mumbai) with active numbers, and Delhi with none. The site states eight manufacturing plants in Delhi, Haryana and Mumbai.

A plant address tells a buyer where to send an inspector. What each company says about testing at those sites comes next.

What does each company publish about its test facilities

A test facility described on a company website is a claim by that company, not a public-register fact, so this page reports whether each company describes one and leaves the figures on the company's own page. No public register records what a test facility can do, so a published figure cannot be checked the way a licence number can.

• Completion Oil Tools Private Limited: describes an in-house test well and a flow-loop facility, with pressure, temperature and load figures, on its About page.
• DIC Oil Tools: states quality assurance and testing in general terms.
• Gradwell Oilfield Private Limited: describes a surface and subsurface validation and testing facility, with pressure, temperature and load figures, on its home page.
• Maximus OIGA Private Limited: states in general terms that it has testing capabilities. It publishes no test-facility specification.
• Oilmec Drilling Equipments Private Limited: describes an in-house SCADA-operated test well.
• Parveen Industries Pvt Ltd: describes testing and re-certification services, including non-destructive and hydrostatic testing.

Four documents turn a published claim into evidence, whichever company makes the tool:

These documents apply to every tool family. Which families each company lists comes next.

Which completion tool families does each company list

Six tool families make up the core of a downhole completion string: packers, liner hangers, bridge plugs and cement retainers, flow control, float equipment and stage cementing tools. The matrix shows which of these product families each company lists in its own catalogue.

A catalogue shows what a company makes. The next question is whether any of them tells you how long an order takes.

Which of these companies publish lead times

One of the six companies publishes lead-time bands: Maximus OIGA Private Limited states 1 to 4 weeks, 4 to 12 weeks, and 8 to 16 weeks or more for the SpectraMax line, by product class. The other five publish no lead time figure on the pages checked, and two of them state "on-time delivery" without a number.

No lead time figure was found for Completion Oil Tools Private Limited, DIC Oil Tools, Gradwell Oilfield Private Limited, Oilmec Drilling Equipments Private Limited or Parveen Industries Pvt Ltd on the pages.

A band is a published range. The quotation fixes the date for a specific build.

Lead times are one of the few commercial facts any of the six publish. The next section covers what none of the six publish.

What does none of them publish

None of the six companies publishes a record a buyer can check independently for installations, named customers, prices or witnessed test results. Each gap has a question that gets a better answer than a website claim would.

None of these is published by any company on this page, the publisher included. The next section shows how to run every check on this page yourself.

How can you verify any of this yourself

Every cell on this page can be checked in three public places, in about ten minutes per supplier: the API Composite List, the company registry and the supplier's own website. This is how to verify API certification for any supplier, including the publisher.

Check 1: licence status on the API Composite List

1. Open the API Composite List on the website of the American Petroleum Institute (API).

2. Search by the company's distinctive name word, not the full legal name, then read the legal name and city of every result and set aside look-alikes.

3. For each licence number, read the specification prefix, the status and the status date. For a Q1 number, read the Active row.

4. Match the number on the vendor's certificate to the register, and check that the specification covers the tool you are buying.

Check 2: the legal entity on the company registry

6. Ask the vendor for its CIN, or find it on its website or invoice.

7. Look the CIN up in the Ministry of Corporate Affairs company master data, and confirm the name, the status (Active) and the date of incorporation.

8. If the vendor claims a longer history than the entity's date, ask for the predecessor entity's registration and check it the same way.

Check 3: the supplier's own claims

8. Save the page that makes the claim, with the date.

9. Ask for the document that proves it: the licence certificate, the test report, a reference with consent, or the lead time written into the quotation.

Every check has limits, and the next section states what this comparison does not cover.

What does this comparison not cover

This comparison does not rank the six companies, judge product quality, or replace a vendor audit. The page has five limits:

• No ranking or verdict on any company.
• No judgement of product quality or field performance.
• Six companies only, chosen as the method section states, not every Indian maker.
• A snapshot on the query date, 25 September 2026: the API Composite List and the Ministry of Corporate Affairs registry can change the next day.
• A register search matches on legal name, so a licence held under a name that was not searched would not show.

Knowing what a page does not cover is part of using it well. For a single pair of companies, the head-to-head pages that go deeper on each pair are listed next.

Which head-to-head comparisons go deeper

Each comparison below uses the same registers, the same date rule and the same no-winner rule as this page.

Frequently asked questions

Who are the major downhole tool manufacturers?

The major downhole tool manufacturers include global companies such as SLB, Baker Hughes, Weatherford and NOV, alongside Indian makers of completion tools. This page compares six Indian makers on the public record, in alphabetical order: Completion Oil Tools Private Limited, DIC Oil Tools, Gradwell Oilfield Private Limited, Maximus OIGA Private Limited, Oilmec Drilling Equipments Private Limited and Parveen Industries Pvt Ltd. The page ranks none of them.

What are downhole completion tools?

Downhole completion tools are the equipment run into a well to finish it for production. The core families are packers, liner hangers, bridge plugs and cement retainers, flow control equipment such as landing nipples and sliding sleeves, float equipment and stage cementing tools.

How to verify API certification?

To verify API certification, search the company on the API Composite List, read the status and status date of each licence number, and match the number to the vendor's certificate and to the specification that covers the tool you are buying. For a Q1 number, read the Active row.

What is the API Composite List and what is it used for?

The API Composite List is the public register the American Petroleum Institute (API) keeps of companies licensed under the Monogram Program that API runs, and of registered quality management systems. Buyers use the API Composite List to confirm a vendor's licence status before approval, and anyone can search it free by company name.

What is an API license?

An API licence is permission API grants to a manufacturing site to apply the Monogram to products made to a named specification. Each licence has its own number, such as 11D1-0164, and a status on the API Composite List. Licences are issued per site, so one company can hold different numbers at different plants.

Why does approved-vendor status take longer than the well?

Approved-vendor status takes longer than the well because an operator's vendor approval checks the legal entity, the quality system, the licences and the references before any order is placed. A buyer who starts these checks at tender time is already late, which is why the checks on this page are worth running at shortlist stage.