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Manufacturing & Supply

Auxiliary downhole tools — the tools that protect the pump.

The pump is the headline. Everything around it — gas anchors, desanders, torque anchors, buffer subs, PAR valves, tubing drains, and anodes — is what keeps run life measured in years instead of months. These are the auxiliary tools we engineer, supply, and maintain at the Brazi Center of Excellence.

7 tool familiesRod & PCP completionsCarbon / alloy / 304 SS2-3/8" – 3-1/2" EUE
Protect the pump.

Free gas and entrained solids cause most of the pump failures we see on rod and PCP completions. Separators and anchors upstream of the intake remove the root cause.

Hold the string.

Reactive torque on PCP strings and tubing breathing on rod pumps both unload failures into the rest of the completion. Torque anchors and TACs keep the string where you set it.

Work safely.

Tubing drains let crews pull a dry string. Anodes absorb corrosion chemistry before it reaches the pump. Every tool in the family is chosen to reduce downhole risk, not add to it.

Engineering summaries

Each tool below shows key specs, how it works, and sizing at a glance. The full technical data sheet — complete materials list, tolerances, pressure tables — is available on request from every card.

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01 · Gas & solids management

Keep the pump breathing.

Sand and free gas are the two fastest ways to kill a well’s effective stroke. These tools separate both before the fluid reaches the pump intake.

Primarily a desander · dual-capableTDS-003-24

Desander & Gas Separator

Combines gas anchor and desander in a single compact sub — run directly in the tubing below the downhole pump to keep sand, scale, iron sulphide, and free gas out of the intake.

Field positioning

In practice we deploy this tool mainly as a desander. It does carry gas-separation geometry, but for wells where free gas is the primary problem we recommend the dedicated Downhole Gas Separator below.

How it works

Production fluids enter through inlet slots; centrifugal action from the spiral coupling throws solids outward while free gas separates and exhausts back up the ports. Liquid is drawn into the pump through the inner dip tube. No moving parts.

Outer barrel
Carbon steel
Spiral coupling
Alloy steel
Inner dip tube
Carbon steel
Handling pup joint
2 ft or 3 ft
Sizing & flow
OD (in / mm)Dip tube (in)Tubing conn.Annulus area (sq.in)Flow* (bpd)Length (in / mm)
2.875 / 73.01.002-3/8 8RD EUE3.5160280 / 7100
3.50 / 88.91.252-7/8 8RD EUE5.2270345 / 8700
4.50 / 114.31.252-7/8 or 3-1/2 8RD EUE11580280 / 7100

*Calculated at assumed gas velocity of 6 in/s for optimal separation.

Summary only — full technical data sheet available on request.
Request full TDS
The dedicated gas separatorTDS-025-23

Downhole Gas Separator

Installed directly below the rod pump when gas locking, reduced stroke efficiency, or decreased production signal a free-gas problem at the intake. This is the tool we reach for whenever gas — not sand — is the limiting factor.

How it works

On the upstroke, fluid mixture is drawn into the separator through top ports. On the downstroke, free gas separates and exhausts through the same ports; liquid is drawn into the pump via the inner dip tube on the next upstroke. An optional dump valve can be run at the bottom to unload mud-anchor solids into the rathole each stroke.

Outer barrel OD
3.5 in / 4.5 in
Inner dip tube
1.25 in LP · ~13 ft
Assembly length
6000 – 7620 mm
Materials
Carbon steel throughout
Liquid capacity
OD (in)Dip tube (in)Annulus (sq.in)Liquid capacity* (bpd)
3.51.255.2270
4.51.2511580

*Calculated at upward gas velocity of 6 in/s in liquid.

Summary only — full technical data sheet available on request.
Request full TDS
02 · Anchoring & tubing integrity

Hold the string where you set it.

Reactive torque, tubing breathing, and parted pipe all attack run life in different ways. The AT and TAC handle the two dominant failure modes on PCP and rod-pump completions respectively.

For progressive cavity pumpsTDS-005-20

AT Torque Anchor

Reacts the friction torque generated between rotor and stator in a PCP — prevents the tubing string from unscrewing. Mounts directly below the pump.

How it works

Three cam-driven anchoring blades ride on a central mandrel, spring-loaded outward against the casing wall. Clockwise rotation sets the blades; counter-clockwise rotation from surface releases them. Produced fluid passes through the central hollow shaft.

Casing range
4-1/2" – 9-5/8"
Tubing connections
2-3/8, 2-7/8, 3-1/2 EU-BOX
Sizes available
11 configurations
Setting
Rotate clockwise · release CCW
Summary only — full technical data sheet available on request.
Request full TDS
Rod-pump tubing anchor + safety catcherTDS-002-09 · Rev. A

Tubing Anchor Catcher (TAC)

Maintains tubing tension during the rod-pump cycle while simultaneously catching the string if it parts. Standard on most rod-pumping completions where tension management drives run life.

How it works

Set with proper tension to overcome tubing breathing and buckling, slips prevent vertical movement at the anchor. If the tubing parts above the TAC, slips catch it before it falls. Rotates left to set, right to release. Shear-pin design permits emergency release at preselected loads with upward pull when normal release is impossible.

Casing range
4-1/2" – 9-5/8"
Thread sizes
2-3/8, 2-7/8, 3-1/2 8RD EU
Bore
Full bore-through
Emergency release
Shear-pin, pre-selectable load

Eliminates breathing and buckling — extends effective pump stroke and volumetric efficiency while cutting casing, tubing, and rod wear.

Summary only — full technical data sheet available on request.
Request full TDS
03 · PCP accessories

Keep the rotor smooth, the shut-down clean.

Two dedicated tools for progressive cavity completions — one stabilizes the pump in the string, the other prevents the tubing column from dropping onto the pump every time it’s stopped.

Centers the PCP, damps the orbitTDS-003-23

Oscillating Buffer Sub (OBS)

Installed immediately above the pump (or above the stator, connected to the rotor orbital tube) on progressive cavity completions to center the upper pump and attenuate the orbital vibration of the rotor inside the stator.

How it works

Acts as a stabilizer and vibration damper. Reduces premature wear on the pump and adjacent downhole equipment and lowers the risk of PCP anchor disarmament caused by excessive oscillation of the pump assembly.

Material
C45
Max OD
139.7 mm / 5.50"
Min ID
76.2 mm / 3.00"
Length
431.8 mm / 17.0"

Fits 6-5/8" and 7" production strings across the typical wall-thickness range.

Summary only — full technical data sheet available on request.
Request full TDS
Shut-down bypass for PCP completionsTDS-004-24

PAR Valve

Deployed on the tubing string above the PCP discharge. On pump stop, prevents fluid and solids in the tubing column from settling on top of the pump — a frequent cause of hard restarts and premature failure.

How it works

Hydrostatic head actuates a spring-loaded piston that opens communication between tubing and annulus, diverting fluid and solids out of the column. When pressure equalizes, the spring reseats the piston and reisolates the tubing.

Body metallurgy
304 SS · 4140 flow tube
Actuator
ToughMet AT3-110
Temperature rating
500 °F
ΔP for actuation
75 psi
Size options
SizeConnectionOD (in)ID (in)Max over-pull (lbf)
2-7/8"2-3/8 or 2-7/8 8RD EUE4.52.2580,000
3-1/2"3-1/2 8RD EUE5.02.8070,000

Valve is shipped made up to 2,900 ft-lbs of torque; all threads made up with Haliweld.

Summary only — full technical data sheet available on request.
Request full TDS
04 · Flow control & corrosion

Drain safely. Protect chemically.

A tubing drain that lets you pull a dry string, and a sacrificial anode that takes the corrosion hit before it reaches your pump, rods, or joints.

Drain wet tubing before tripping outTDS — HTD / Shear-Pin

Tubing Drain

Eliminates the hazards of pulling a wet tubing string. Two variants depending on actuation preference and well deviation.

How it works

Hydraulic (Fike HTD) uses applied tubing pressure to rupture an engineered metal disc (A8219 or A8659) in the Circulation Disc Assembly — opens a drain port to the annulus with no restriction. A dual-port 180° HTD is available for deviated or horizontal wells. Shear-pin variant opens a shear-pinned sleeve on inside-tubing pressure; opening pressure is adjustable via the number of shear screws.

Hydraulic variant
Fike HTD · rupture-disc CDA
Port configuration
Single or dual (180°)
Shear-pin variant
Pressure-adjustable via pin count
Install orientation
Box up / pin down

Disc options A8219 and A8659 differ in opening-pressure accuracy — selected per tubing rating and well conditions.

Summary only — full technical data sheet available on request.
Request full TDS
Downhole cathodic protectionTDS-007-23

Tubing Anode

Installed below the pump intake to neutralize corrosive fluid elements before they reach the pump, rods, and tubing joints. Extends the life of the full string on wells with aggressive fluid chemistry.

How it works

A solid anode round bar is affixed within a pup joint and equipped with a diffuser. The anode material sits more active on the galvanic series than the steel it protects — corrosion is consumed by the anode instead of the production components. Consumes dissolved corrosive gas and neutralizes aggressive fluid elements.

Length
40 in (both sizes)
Connection
2-3/8 or 2-7/8 · 3-1/2 8RD EUE
Anode dia.
2.25 in / 2.75 in
Assembly weight
17 kg / 27 kg
Size options
SizeConnectionOD (in)Anode dia. (in)Anode weight (kg)Total weight (kg)
2.00 / 2.502-3/8 or 2-7/8 8RD EUE3.6682.256.2417.00
3.003-1/2 8RD EUE4.5002.759.3027.22
Summary only — full technical data sheet available on request.
Request full TDS
Quick reference

Start from the problem.

A fast map from failure mode to the tool that solves it. Our engineers will confirm the final selection against your completion geometry and fluid profile.

If you see…Reach for
Gas locking / low volumetric efficiencyDownhole Gas Separator
Sand, scale, or iron sulphide reaching the pumpDesander & Gas Separator (primarily as desander)
PCP tubing unscrewing from reactive torqueAT Torque Anchor
Rod-pump tubing breathing / buckling / parted-pipe riskTubing Anchor Catcher (TAC)
PCP vibration wear on pump and anchorOscillating Buffer Sub (OBS)
Solids settling on PCP after shut-downPAR Valve
Wet tubing hazard during workoverTubing Drain (HTD hydraulic or shear-pin)
Aggressive corrosive fluids attacking stringTubing Anode
Build the right bottom-hole assembly

Tell us about the well — we'll spec the stack.

Completion geometry, fluid profile, production targets, failure history — our engineering team assembles the right combination of auxiliaries and documents it against the TDS.

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