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. This page explains what to look for in an intrinsically safe smartphone for Pekanbaru and the Rokan block, Riau, and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Pekanbaru and the Rokan block, Riau: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Where things stand: the IS-04Z1 has not launched, and none of its four certification routes has produced a certificate yet. 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 |
|---|---|---|
| Level of protection | ia, ib or ic matched to the zone | ib, for Zone 1 |
| Entity parameters | Uo, Io and Po within the device limits | Published with the certificate |
| Accessories | Chargers and cases certified with the device | Defined at certification |
| Where it applies | Pekanbaru and the Rokan block, Riau: Gathering stations, Wellheads and flowlines, Oil treatment and storage | 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.
A short profile of the site and the kinds of classified area that matter for portable equipment.
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.
The Duri field, discovered in 1941 and in production from 1954, covers 67.28 sq km in Riau and has produced more than 2.75 billion barrels, making it one of Indonesia's largest and most productive fields.
The previous operator drilled 16,023 wells across four blocks, including the Rokan block and the Coastal Plain Pekanbaru block, so a very dense network of wellheads, flowlines and facilities exists around the city.
Duri's thick crude is produced with steamflood enhanced oil recovery, introduced successfully by 1985, which lifted output to about 302 thousand barrels a day by 1995 and means hot steam systems run beside oil handling.
Indonesian is the official language in Pekanbaru, while Minangkabau is widely used in markets and daily business, and Riau Malay and Javanese are also commonly spoken, so site teams are often multilingual.
Intrinsic safety limits the electrical and thermal energy in a circuit so that neither a spark nor a hot surface can ignite a gas or dust atmosphere, even when a fault occurs. The ib level, used for Zone 1, tolerates one fault. It is the usual way to make a handheld device that a worker carries continuously through a hazardous area.
The IS-04Z1 is designed on this principle for Zone 1 and Zone 21 (marking target II 2 G Ex ib IIC T4). Intrinsic safety is a design basis, not a certificate: certification is in progress and none has been issued yet.
In Pekanbaru and the Rokan block, Riau. Because work at a mature field is mostly maintenance of existing facilities, rounds cover many dispersed wellheads, flowlines and gathering stations. A handheld designed for intrinsic safety could carry checklists and photographs between sites, once certified and accepted by the operator.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
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.
No price is published. While certification is in progress there is no list price and no committed lead time, and a supplier quoting a firm figure for an uncertified Ex handset is promising something it cannot stand behind. Indicative pre-launch pricing is issued in writing against a stated quantity and site.
The circuits are designed to limit energy so a spark or hot surface cannot ignite a gas or dust atmosphere, even with one fault (level ib, Zone 1). Certification of that design is in progress.
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.
Not exactly. Explosion proof is a broad everyday term; intrinsic safety is one protection concept, which limits energy so ignition cannot occur. Flameproof (Ex d) is a different concept that contains an explosion. The IS-04Z1 is intrinsically safe by design.
Steamflood means hot steam lines and wells operate close to oil and gas handling, so surface temperatures can be higher than at conventional wells. Handheld devices should respect the site's temperature limits and classification, so ask the operator for its rules on portable electronics.
The Rokan block, including the Minas and Duri fields, has been run by Pertamina Hulu Rokan since August 2021. Contractors and suppliers typically register through Pertamina's vendor processes and follow the site's own induction and permit rules, so confirm current requirements.
Suppliers are normally approved by the operator and its contractors, following Pertamina group processes since the 2021 operator change. Ask PT Pertamina Hulu Rokan about current registration requirements before offering any equipment. Confirm with the site operator.
More on Pekanbaru Oil Field, and on other places in Indonesia.
Share the site details and quantity. You will get the datasheet and the certification schedule back by email; pricing is indicative only until launch.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.