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MWD / LWD & Downhole

Components for downhole tools, MWD/LWD equipment and surface drilling hardware, machined in the alloys the service calls for.

Downhole work punishes parts in ways a shop floor never sees: vibration at temperature, drilling fluid at pressure, and a tool body that has to survive being run in and out of a hole for years. The drawing usually reflects that experience. The machining has to respect it.

Most of what we make here is small to medium batch — sensor housings, flow sleeves, mandrels, connector bodies and thread subs. Beryllium copper and nickel alloys come up often, and the parts are usually non-magnetic or corrosion-critical.

What we make here

Parts that come through this department.

Sensor and electronics housingsFlow sleeves and restrictorsMandrels and tool bodiesThreaded subs and connectorsNon-magnetic parts in BeCuSeal and O-ring grooves

Typical work: traceable batches where the material certificate and the dimensional report travel with the parts.

How the work runs

From drawing to shipping, in this order.

Service conditions firstTemperature, pressure, fluid and the standard the tool is built to are read before the drawing is priced.

Material and certificateThe alloy is bought to the grade named, with the mill certificate held against your purchase order.

Machining and threadingThreads cut to the drawing or the API standard; non-magnetic parts kept on separate tooling and checked for response.

Report and packDimensional report, certificate and thread gauge results travel with the parts.

Materials, equipment and inspection

The practical detail.

Materials and environment

Inconel 718 and 625, MP35N, 17-4PH, 4140, duplex stainless and C17200 beryllium copper. Threads are usually API or specified on the drawing; where a thread is not standard we cut to the drawing rather than substitute.

See the full material list

Inspection

CMM for position and profile, thread gauges for API and UN threads, surface finish on sealing faces, and material certificates traceable to the heat number. NACE-related requirements quoted case by case.

Quality and documentation

Capacity

What the department can actually hold.

Part family	Typical material	What decides the price
Sensor and electronics housings	BeCu C17200, 17-4PH	Wall thickness and non-magnetic verification
Flow sleeves and restrictors	Inconel 718, MP35N	Alloy machinability and bore tolerance
Mandrels and tool bodies	4140, duplex	Length, concentricity and thread callout
Threaded subs and connectors	4140, 17-4PH	Thread form, gauge class and pressure rating
Seal and O-ring grooves	316L, BeCu	Groove finish and positional tolerance
Surface drilling hardware	4140, 4340	Size and batch, usually turned and milled

Non-magnetic is a material property, not a machining one. If the drawing says non-magnetic, the certificate has to prove it — we check the response and record it.

Parts we have machined

Real components, photographed on our own bench.

Where the money goes

What actually drives the price of this work.

Alloy Beryllium copper and nickel alloys cost several times 4140 per kilo, and they machine slower. Both effects land on the part price.
Thread standard An API or premium connection needs gauges and a verification step; a plain UN thread does not.
Traceability Heat-number traceability, NACE documentation and third-party witness all add inspection time.
Batch and repeatability Downhole parts are bought in small batches on a schedule. Keeping the program and fixture is what makes the second batch cheaper.
Tolerance stack A bore, a thread and a seal face that all reference each other should be machined in one setup. Splitting them across suppliers is what makes the stack fail.

Straight answers

Questions buyers ask about this work.

Can you machine non-magnetic beryllium copper?

Yes — C17200 is one of the materials we run regularly. It is machined with attention to dust control and tool wear, and parts are checked for magnetic response where the drawing calls for it.

Do you cut API threads?

API and premium connections are quoted from the drawing or the standard named on it. We confirm the thread form before cutting, because a substituted thread is not a small mistake downhole.

Can you supply material certificates?

Yes, traceable to the heat number and issued with the parts. If the end user needs a specific mill or certification, say so at enquiry rather than after the material is cut.

Keep reading

Where this usually leads next.

CapabilityCNC Turning CapabilityID Grinding ReferenceMaterials

Request a quotation

Tell us the part and the environment it works in.

Industry fit is checked before the price is argued. Send the drawing with the service conditions and we will answer on both.

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