Mature field
Duri has been steamflooded since 1985 and is described as one of the world's largest steamflood developments, so work is mostly maintenance of existing facilities.
Pekanbaru is the capital of Riau province on Sumatra and the regional base for the Rokan block, a 6,220 square kilometre oil area including the Minas, Duri and Bekasap fields. PT Pertamina Hulu Rokan has operated it since 9 August 2021. An Ex-proof mobile phone distributor in Pekanbaru and the Rokan block, Riau would carry the IS-04Z1 to these buyers once certification completes.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. Pekanbaru and the Rokan block, Riau has no appointed SAMS distributor yet: the IS-04Z1 is pre-launch (certification in progress, no certificate issued, launch planned for Q4 2026), and distributor applications are open.
Status: pre-launch. IECEx, ATEX, UKEX and NEC 500 certification is in progress and no certificate has been issued; launch is planned for Q4 2026. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Ex marking | Group, category, protection concept, gas group, temperature class | II 2 G Ex ib IIC T4 (target) |
| Gas group | IIA, IIB or IIC matched to the area drawing | IIC (target) |
| Temperature class | T-class below the ignition temperature of the gas | T4, 135 °C (target) |
| Where it applies | Pekanbaru and the Rokan block, Riau: Oil treatment and storage, Steam generation and power facilities, Gathering stations | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Pekanbaru Oil Field. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
Duri has been steamflooded since 1985 and is described as one of the world's largest steamflood developments, so work is mostly maintenance of existing facilities.
The block passed from Chevron's Indonesian subsidiary to PT Pertamina Hulu Rokan in 2021, after about 70 years, so procurement follows Pertamina group processes.
Pertamina Hulu Rokan now runs the Rokan block, which also includes the giant Minas field, where production began in April 1952, so one operator oversees several large mature fields around Pekanbaru.
A pipeline from Duri to the Dumai export terminal was completed by 1958, and the first road linking Pekanbaru with Dumai was built by the operator, forming the logistics spine of the Riau oil region.
Chevron Pacific Indonesia handed over the Rokan block to Pertamina Hulu Rokan on 8 August 2021 after 97 years in Indonesia and more than 12 billion barrels of oil produced from central Sumatra.
The Duri area developed as a residential hub for the workforce that supports production, with roads, electricity networks and storage tanks built alongside the field.
“Ex-proof” is shorthand for equipment carrying an explosion-protection marking (the Ex mark) that matches the area it enters. The marking states the protection concept, gas or dust group and temperature class, and it must be backed by a certificate issued by a recognised body, so a phone described as Ex-proof should come with a certificate number you can check.
The IS-04Z1 is designed to carry the marking II 2 G Ex ib IIC T4. That is a target: certification is in progress, no certificate has been issued, and SAMS will publish the certificate numbers when they exist.
In Pekanbaru and the Rokan block, Riau. A marking check on the Rokan block would compare a label with zones at gathering stations, treatment and storage. Crude and associated gas vapours are typically IIA or IIB, so IIC is conservative. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, not approved.
SAMS is appointing authorised distributors ahead of the Q4 2026 launch. No territory has been granted for Pekanbaru and the Rokan block, Riau yet and applications are reviewed company by company. Because a certified Ex device cannot be opened by an ordinary phone workshop without invalidating its certificate, SAMS looks for partners who can provide competent technical support and after-sales service locally.
No. Nothing can be bought or taken into a classified area today: certification is in progress and launch is planned for Q4 2026. What is available now is the datasheet, the written certification schedule and evaluation units for safe-area use.
SAMS has not published a price. Any figure you are offered for an uncertified Ex phone should be treated with caution; written indicative pricing is available for a defined quantity and site.
The marking target is II 2 G Ex ib IIC T4. It becomes a marking only when the certificate is issued; until then it is a design target.
Likely candidates are gathering stations, wellheads and flowlines, oil treatment and storage, steam generation and power facilities. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Apply through the distributor page with your company details and the territory you cover. SAMS reviews applications company by company and has not yet granted a territory for Pekanbaru and the Rokan block, Riau.
Typical areas include wellheads, flowlines, gathering stations, tank farms, pump stations and loading facilities, where flammable vapour can be released. The operator sets the zones, so confirm the classification for each facility rather than assuming one rule for the whole field.
The first road linking Pekanbaru with Dumai was built for the oilfield, and roads and a pipeline connect the Duri area to the Dumai port. Plan for customs clearance in Indonesia and site gate checks on electronics, and confirm lead times and import rules with your freight agent.
No, Pekanbaru is the regional support city for the block. Hazardous areas are in the field facilities, such as gathering stations and treatment plants. Office and workshop areas usually follow normal rules. Ask the operator which areas are classified.
Related guides for Pekanbaru Oil Field and for Indonesia.
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.