Winter lows below minus 30 degrees
Cold spells in Heilongjiang can pass minus 30 degrees Celsius. Cold cuts lithium battery capacity, and the exact operating range will be stated on the certificate once issued, not promised in advance.
China · Daqing Oilfield
Explosion proof mobile phone for Daqing Oilfield
Daqing was discovered in 1959 in the Songliao Basin of Heilongjiang and is operated by PetroChina. This page is for the HSE, production and telecoms teams who need an explosion proof mobile phone in China that works across a mature oilfield, its gathering stations and the winter that comes with it. The IS-04Z1 is designed around intrinsic safety rather than a flameproof enclosure.
Launching Q4 2026 · NEPSI certification programme in progress
Local approvalNEPSI · IECExIECEx · NEPSI in progress
AvailabilityQ4 2026via authorised distributors
The field · Daqing
What is classified at Daqing, and why an explosion proof mobile phone has to fit it
Daqing is not one plant but a field covering a very large area around Daqing city, with a great many wells connected by flowlines to metering rooms, transfer stations and treatment plants. Production is sustained by chemical enhanced recovery. Published research dates polymer flooding at Daqing to the mid-1990s and alkali-surfactant-polymer flooding to pilots in 1994 and large-scale use from 2007, and polymer flooding has kept the field above 10 million tonnes a year for about 14 years. Most recently the Gulong shale oil block inside the field has passed one million tonnes of annual output, according to Xinhua in December 2025. For a handset the result is a field where old gathering infrastructure, injection stations and new shale wellpads sit in the same area, with associated gas at wellheads and separators, chemical handling at injection stations, and PetroChina refining and petrochemical plants nearby in Daqing.
Operators and neighbours
- PetroChina Daqing Oilfield
- The operating company for the field, part of PetroChina.
- Gulong shale oil block
- New unconventional wellpads within the Daqing area, ramping towards larger output.
- Daqing Petrochemical
- PetroChina's petrochemical company in Daqing city.
- CNPC drilling and service companies
- Drilling, workover and well-service contractors working the field.
- Tertiary recovery teams
- Polymer and surfactant injection stations run alongside conventional waterflood.
- Local construction contractors
- Pipeline, tank and station work through the short summer building season.
Classified units and areas
- Wellheads and flowlines
- Associated gas at wellheads; Zone 1 close in, Zone 2 across the pad.
- Metering and transfer stations
- Heaters, separators and tank vents moving fluid towards treatment.
- Crude treatment and stabilisation plants
- Dehydration, heating and storage of produced crude.
- Gas gathering and light hydrocarbon recovery
- Compressors and recovery units on associated gas.
- Injection stations
- Mostly chemical handling, but sited close to classified gathering plant.
- Shale wellpads
- Newer pads with multi-well drilling and fracturing activity.
- Operations buildings and towns
- Safe areas where the phone is simply a phone.
Built for local conditions
What Daqing does to a handset
Heilongjiang's winter is the first thing every Daqing engineer mentions. Distance, age of plant and constant contractor traffic come next.
IP ratingIP68
Battery4,000 mAh
Camera50 MP
OSAndroid 16
A very large area and few fixed landmarks
Pad and station names repeat across a field this size. Four-constellation GNSS puts a coordinate on a fault record, and the 50 MP camera puts a legible photograph next to it.
Slush, ice and meltwater on every round
Winter rounds are done on iced surfaces and through thaw. IP68 sealing keeps meltwater and slush out of the device, which can be wiped and dried rather than kept inside a coat.
Old and new infrastructure in one estate
Original 1960s-era wellsites share the field with later recovery plant and new shale pads. A Zone 1 design target is meant to work across all of them without separate devices.
Contractors on every shift
Workover and construction crews arrive under permits that change daily. Enrolling handsets in an existing MDM console lets the field restrict applications and switch the camera off in sensitive areas.
How work is organised
Rounds, contractors and approvals at Daqing
Daqing is organised around operating units that each own a block of wells and stations, with operators on regular rounds and specialist crews called out for workover, pipeline and electrical faults. Heavy construction and shutdown work tends to cluster in the warmer months. The field is one of PetroChina's most visible assets, so its HSE teams are used to detailed equipment submissions. We have not verified a published supplier-registration route at Daqing and do not name one. Ask the oilfield company's procurement and HSE teams which Ex certificates, test reports and local approvals they accept, and whether a China-registered supplier is required. NEPSI is among the certification routes in progress ahead of the Q4 2026 launch.
Production01
Station rounds in winter
An operator checks heaters, separators and tank levels at a transfer station, photographs a frozen valve or a leaking seal and sends the coordinate and image to the control centre.
Maintenance02
Workover and electrical call-outs
A crew sent to a failed pump has to find the pad, read the permit and report completion. One enrolled handset replaces the paper permit, the radio and the camera.
Unconventional03
Gulong shale wellpads
Newer shale pads bring drilling, fracturing and testing crews into one site in quick succession. The handset carries the pad plan and permit and is managed centrally like every other device.
Questions · Daqing
Frequently asked questions
How cold can the IS-04Z1 operate at Daqing?
The operating temperature range will be stated on the certificate and datasheet once testing completes. We do not quote a figure before it exists, so ask for the schedule and check it against your coldest site.
Does chemical flooding create its own classified areas?
Injection stations for polymer and surfactant are mostly a chemical-handling matter, but they sit close to classified gathering plant. The site's own area classification decides, and the handset should follow it.
Are the shale wellpads classified differently from the older field?
They are classified by the same rules, but pads with active drilling and testing have larger temporary zones. Confirm the current drawing for the pad rather than assuming the older field's boundaries.
Is the IS-04Z1 certified for Daqing yet?
No. It is pre-launch and certification, including the NEPSI route, is in progress ahead of Q4 2026. Do not take it into a classified area before the certificate exists.
Enquiry · Daqing Oilfield
Ask about the IS-04Z1 for Daqing Oilfield, China
Tell us the site, the zone and gas group, and roughly how many handsets. The SAMS team replies by email with the datasheet and the certification schedule for China. The IS-04Z1 is pre-launch and certification is in progress, so there is no list price yet; indicative pricing is issued in writing against a stated quantity and site.
Enquiry · Daqing Oilfield
Launching Q4 2026
Evaluating the IS-04Z1 for this site?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule for your market.