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Baker Oil Tools T-Series Safety Valves

RBT"1 Premium Thread Connections - Extend Valve Life

Metal-to-Metal Seal

Torque Shoulder

Metal-to-Metal Seal

The RBT Premium Thread Connection is a two-step threaded connection with metal-lo-metal seals at the box and pin noses

and a center locating torque shoulder.

Baker's RBT Premium Thread Connections form the outer housing connections for the valves. The connection's two-step design distributes thread load to impart greater strength than single-step designs. The metal-to-metal seal points at the box and pin noses provide enhanced pressure containing capabilities. The number of connections is kept to a minimum to limit potential leak paths.

Ultra-Strong Flapper Closures - Ensure Reliable, Repeated Sealing Wedge Flapper 3 Point Contact Closing Sequence

Curved Flapper 2 Point Contact Closing Sequence

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2 Point Connection 'J

^T

T-Series Valves use the same ultra-strong flapper closure mechanisms lhat have proven practically indastructible in other Baker retrievable safety valves.

Baker's ultra-strong flapper closure mechanism withstands high-velocity slam closures and protects the valve seat of the T-Series Valve from stress-induced damage to ensure

reliable sealing, time after time. The flapper design moves the first point of contact away from the seat, to the flow tube, to minimize loading on the hinge and flapper pin during valve opening and closing. This design also causes the impact from a slam closure to be hydraulically absorbed by the flow tube, not the flapper seat. A unique, highly

reliable, dual-hinge configuration provides added strength during opening and closing and virtually eliminates flapper pin bending.

Both curved and wedge-shaped flappers are available. The curved flapper accommodates smaller valve diameters in slimline designs. Either flapper is available with Baker's patented Thru-the-Flapper Self-Equalizing7 System.

Control Line Jam Nut System - Reduces Potential Leak Paths Conventional NPTConneclic

T-Series Safety Valves use Baker's patented Control Line Jam Nut System with front and rear ferrules to reduce the

potential leak path to one at the critical point where the control line connects to the safety valve. The typical control

line connection (NPT connector) used by other safety valve suppliers has two potential leak paths.

Baker's patented Control Line Jam Nut System has no internal mechanism to complicate design and function.

Baker Premium Safety Valve Protection

Just because you operate in standard pressure and temperature environments doesn't mean you don't

need premium safety valve protection. If your downhole safety valve fails during normal intervention operations, the results can be very expensive,

particularly if you are working in deepwater. Baker Oil Tools T-Series

Non-Elastomeric Tubing-Retrievable Safety Valves offer unmatched

protection for a wide range of applications from low end standard service through HP/HT applications. With T-Series Safety Valves, you can

count on premium performance, reliability and service life in operating environments with working pressures from 5,000 -13,500 psi and temperatures from 20cF - 300T.

T-Series Valves combine these key features to deliver the most rugged, reliable, and truly fall-safe surface controlled subsurface safety valves: Field-proven non-elastomeric sealing technology Patented radial punch control fluid communication system Minimum number of premium metal-to-metal housing connections Patented control line jam nut connection Optional through-the-flapper, metal-to-metal self-equalizing system Expanding flapper lock-open tool

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Baker Oil Tools T-Series Safety Valves

T-Series Accessories

Safely value is closed. Tool locales in safety valve.

Tool actuates in salety valve.

Expanding sleeve is inserted. Safeiy valve is locked open.

Unique Permanent Lock Open - Has no internal valve mechanism to complicate design and function

T-Series Safety Valves are of the normally closed type. However, if normal pressure integrity of the valve is lost for any reason, it can be permanently locked in the open position with a Baker Flapper Lock-Open (FLO) Tool. Unlike other permanent lock-open tools, which are characterized by an integral shifting sleeve at the bottom of the flow tube, the FLO tool is not an integral part of the valve. Instead, the expanding sleeve is inserted into the flapper section only when required. As a result, there is no accidental activation, and the tool is not exposed to potentially degrading long-term downhole conditions.

Flapper Lock Open Tool

Radial Punch Secondary Communication -Activates only by radial motion of one trip, jar down wireline tool

Puncture Communication Tool

Communicate

Give Yourself The Protection You Deserve Call your Baker Oil Tools representative today to learn more about the T-Series Tubing-Retrievable Safety Valves' wide range of applications from low end standard service through HP/HT applications.

Baker Oil Tools T-Series Safety Valves

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No Linear Sleeves - Prevents Inadvertent Actuation

Extensive studies by operators and independent research institutes show that accidental actuation of the control fluid communication system and

resulting leakage between the hydraulic control line chamber and the tubing wellbore is the primary cause of safety valve failures. Baker has solved that problem in the T-Series Safety Valves by removing the lock-open sleeve from the valve and incorporating a patented radial punch communication system. This unique communication system: Leaves the valve with a smooth ID, free of sleeves or other devices that

move linearly and can hang up wireline or coiled tubing-conveyed tools Provides an uninterrupted control fluid path to the piston

Activates only by radial motion of a one-trip, jar-down wireline tool Eliminates the possibility of accidental activation of the lock-open feature

by a tool passing through the ID of the valve

To date, after seven years of service and thousands of installations, there have been no failures of T-Series Safety Valves due to premature lock-open.

RATING" Envelope - Provides Safe Performance Evaluation

The combination of powerful computers, sophisticated numerical simulation techniques, and exhaustive laboratory testing has enabled Baker Oil Tools to develop the industry's

new standards of predicting a safety valve's performance capabilities under all possible loading conditions.

Model T-5

Tubing Retrievable Safety Valve Selection Guide Model:

Model: TSM(E)

3 6S5

G 550

B. 600

3.D75

4.312

5,000

10.000

5,000

10.000

11,000

13.500

a.ooo

!0 - 300 7- I*

' Note: Groaler setting depths aro available.

nun. please contact Safety Systems AEG team. Phone: 910-455-3000 or 1-800-331-3938 Fax:918-259-6031 E-Mail: safQtysystemsAEG-BA@bakeroillools.com BAKER

HUGHES Haker Oil Tools 9100Emmolt Road (77040) P. 0. Box 40129- Houston, TX 77240 'www.baKerhughes.com/bot

'"fi 1999 Baker Hughes Incotporitod. All fmi.I' rei rvM PS8-28-9B0

Operation The T-Series safety vaJve is controlled from the surface via a small-diameter hydraulic control line that connects the safety valve to the surface emergency shutdown system. Because the valve fs of the normally closed type, it automatically returns to the closed position when applied control line

pressure is removed, thus shutting in the well. Key Features No linear communication sleeves - prevent

inadvertent actuation Rating envelope - provides safe performance

evaluation RBT premium thread connections - extend valve life Ultra strong flapper closures - ensure reliable,

repeated sealing Control line jam nut system - reduces potential

leak paths Unique permanent lock open Radial punch secondary communication Optional thru-the-flapper self-equalizing system

Optional Thru-the-Flapper Self-Equalizing System Design keeps production fluids and solids inside the flow tube in

open and closed positions for trouble free operation and provides Class 2 Sandy Service rating for all sizes The plunger is made from an erosion and corrosion resistant

material with pressure drop in plunger throat and nor at inlet - to prevent erosion and corrosion Feature is incorporated into the flapper to provide simple

conversion to and from self-equalizing and non-self-equalizrng versions

How the Self-Equalizing System works

1. When the valve is closed, the equalizing mechanism's port is protected from contaminates.

2. Close the wsng valve and pressure up the control line to the safety valve's opening pressure. The flow tube depresses the

plunger to open an equalizing path prior to the valve opening.

3. The equalizing feature will allow the pressure to equalize above and

below the flapper. When the pressure is equalized, the safety valve will open.

4. The flapper is completely out of the flow path, the equalizing feature

returns to the closed position and the safety valve is fully open. Open the wing valve and (low the well as

required.

Pressure drop occurs away from the inlet to prevent erosion ol the seat.

MetaMometal seat prevents damage from unloading against differentia! pressure.

Flow is not across seal.

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Model T Closed Positior

Alternate locking profiles

Control line jam nut connection

Unique radial punch fluid communication system

provides metal-to-metal seals

Non-elastomeric dynamic seal assembly eliminates explosive decompression and thermal degradation that can occur with elastomers

Rod piston design reduces leak paths and minimizes friction

Combination metal-to-metal non-elastomerJc flapper seal provides additional protection against scratches, dents, and minor damage

Uftra strong closure mechanism

Baker RBT premium, metal-to-metal housing connection

-run

control chamber stop seals provide additional protection from well fluids

Ultra strong slimline closure

mechanism

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Model TM Closed Position

Model TM Open Position

Model TSM Closed Position