A GRE screen tube (glass-reinforced epoxy / fiberglass screen tube) is not “the sand-control answer” for every completion. It is one screen-product path used when filtration, corrosion resistance, and installability matter together—especially in applications the live catalogue frames around horizontal CBM, geothermal, and other corrosive well service as published. Operators and EPC teams lose time asking for “fiberglass screens” before locking sand-control duty, well geometry, pressure-class intent, and whether a GRE screen—not steel screen hardware or a GRE line pipe / tubing object—belongs on the shortlist.
This page is a selection and RFQ framing guide. It does not reprint the live catalogue or rewrite older CBM-benefits / durability marketing posts. Use the money page to match an offered configuration; use this article when the open question is still whether a GRE screen tube fits.
Who this page is for
- Completion / production engineers deciding whether a GRE (fiberglass) screen tube fits CBM, geothermal, water-source, or other corrosive sand-control duty.
- EPC / project teams keeping screen, GRE line pipe, and GRE tubing scopes separate before the RFQ hardens.
- Procurement engineers writing RFQs that name operating conditions and interfaces, not only “send GRE screens.”
Start with the operating condition (not the diameter row)
Lock these fields before freezing a nominal diameter or thread ask. Blank fields force the quote to guess—often the wrong product family (line pipe or tubing), not only the wrong size.
| Condition field | What to capture | Why it matters for a GRE screen tube |
|---|---|---|
| Completion / sand-control intent | Screen / filtration needed vs blank GRE pipe or steel casing only | A screen tube is a filtration object, not a line-pipe spool |
| Well / resource type | Horizontal CBM, geothermal, water-source, other corrosive service you can share | Live PDP frames CBM / geothermal / water-source / industrial themes as published—confirm vs your duty |
| Fluid / corrosion drivers | Produced water / formation fluid chemistry notes, scaling risk, steel-screen failure history | Live PDP frames corrosion / scaling resistance as published—align with process data |
| Geometry | Hole / liner size class, horizontal vs vertical, length of screened interval | Separates “wrong OD class” from “unworkable screen path” |
| Pressure-class intent | Continuous / design pressure band you can share | Live PDP cites a pressure-rating band as published—confirm vs offered datasheet |
| Slot / filtration intent | Sand-control / filtration goal in engineering language (not a slogan) | Slotting is part of the product form on the live page—do not invent micron ratings here |
| Connection / thread intent | Thread / coupling class if known | Live size table lists thread / coupling OD columns as published—match on the offer |
| Handling / later ops | Drillability / workover expectations, non-conductive preference if relevant | Live feature language includes easily drillable and non-conductive themes as published |
| Evidence already held | Prior screen failures, solids production notes, workover history | Separates material choice from design ownership gaps |
If the open question is still GRE/FRP line pipe (flowline / gathering / injection piping), start with How to Spec GRE/FRP Line Pipe from Pressure, Temperature, and Medium. If the open question is downhole GRE tubing acceptance, use Downhole GRE Tubing: Qualification Checks Before Purchase. This article sits on a different object: when a GRE screen tube is the sand-control shortlist item.
When a GRE screen tube fits
Lean toward a GRE (glass-reinforced epoxy / fiberglass) screen tube when most of the following are true:
- Sand control / screened completion is intentional — you need a filtration screen path, not only blank GRE pipe or unscreened steel.
- Corrosion, scaling, or steel-screen life drivers dominate the material question — the live product page frames GRE screens for chemical/environmental corrosion resistance and long-term underground use versus traditional steel screens as published; confirm that framing against your fluid and failure history.
- Duty sits inside the application themes the catalogue already names — as published: water-source wells, geothermal wells, coalbed methane (CBM) wells (including horizontal sand-control framing), and industrial corrosive service. Do not invent an unlisted “universal” well type.
- Pressure-class intent can be checked against the offered band — the live page cites a pressure-rating range of 10 MPa–25 MPa as published; confirm the current offer against your design pressure—do not treat the blog as a certified rating sheet.
- You can own GRE handling and connection practices — lightweight install is a benefit only if yard and rig practices match composite tubulars; live feature language stresses handling/transport/install simplicity as published, not a free pass on connection care.
- Screen scope is separate from GRE line-pipe and GRE tubing RFQs — do not collapse “send GRE” into one PO line that mixes screens, line pipe, and tubing without separate acceptance criteria.
Field check: If sand control itself is still open (gravel pack vs slotted liner vs other hardware), or deviation/geometry makes any screen path unworkable, do not force a GRE screen-tube RFQ as a default.
When steel screens or another path usually win first
| Situation | Lean other path first | Why GRE screen tube is secondary |
|---|---|---|
| Sand-control method still open (pack, other screen hardware, blank pipe) | Completion engineering shortlist | Wrong architecture, not wrong OD |
| Need is GRE/FRP line pipe for surface/gathering/injection | Line-pipe spec sister | Line pipe ≠ screen |
| Need is downhole GRE tubing/casing (not slotted screen) | Tubing qualification / casing sisters | Tubing ≠ screen |
| Pressure / temperature / resin duty clearly outside offered screen language | Steel screen or specialty design as engineered | Do not invent an extended rating in email slogans |
| Only “benefits of screens in CBM” content is needed | Benefits sister (not this page) | This page owns fit + RFQ, not a benefits encyclopedia |
| Durability / strength marketing is the only open question | Durability sister left alone | Do not rewrite that SERP here |
For a CBM benefits sister (not a rewrite of this page), see The Benefits of Using Screen Tubes in CBM Wells once. The older durability / strength post on GRE screen pipe is left alone.
Screen tube vs GRE line pipe vs GRE tubing (keep the scopes separate)
A GRE screen tube is the screen / filtration object. It is not GRE line pipe and not plain GRE tubing.
| Scope | Typical decision | Sister page |
|---|---|---|
| GRE screen tube (this page + PDP) | When fiberglass screen fits; diameter/thread class as offered; slot/filtration intent; pressure-class check | This article + live PDP (linked once below) |
| GRE/FRP line pipe | Pressure, temperature, medium → line-pipe path | How to Spec GRE/FRP Line Pipe (linked above) |
| Downhole GRE tubing | Qualification / acceptance before purchase | GRE tubing qualification sister (linked above) |
| CBM benefits context | Why screens appear in CBM conversations | Benefits sister (linked above) |
Field check: Writing one PO line that mixes “GRE line pipe + GRE screen + GRE tubing” without separate acceptance criteria creates the wrong evidence pack for each vendor scope.
What the live product page already frames (honesty bounds)
As published on the live CNPS product page for GRE SCREEN TUBE:
- Product-family framing: GRE screen tube made from continuous glass fiber reinforced with epoxy resin, fabricated through a precision winding process; after curing, the tube undergoes boring and slotting for filtration finish as published.
- Application themes as published: water-source wells; geothermal wells; coalbed methane (CBM) wells with sand-control / horizontal framing; industrial corrosive service.
- Qualitative characteristics as published: corrosion resistance; high strength-to-weight / lightweight handling; fatigue and pressure resistance language; easily drillable; non-conductive / non-corrosive safety framing; lower install/maintenance cost language versus steel—treat as selection language, not a lab certificate or guaranteed % savings.
- Size classes shown on the live technical table (nominal diameter / thread / ID / coupling OD / nominal length) for 3 1/2 in, 7 in, and 8 5/8 in rows as published—treat as offered production examples, not a free “any size” promise. This blog does not reprint every millimeter as a universal guarantee—match size class on the money page and in the formal offer.
- Pressure-rating band cited on the page: 10 MPa–25 MPa as published.
- Material: glass fiber reinforced epoxy resin as published.
- Standard reference cited on the page: SY/T 6267-2006 (Glass Fiber Pipeline Specification) as published—not a substitute for inventing API / ISO seal claims in this blog.
- Live page note: parameters represent general information based on standard materials and design conditions; custom sizes and configurations can be produced as offered—ask what the formal offer includes.
- Price: live page points to contact for quotation—no price invented here.
Honesty bound: Do not treat a blog selection page as a certified rating sheet. Slot apertures, micron ratings, project-specific MPa/°C guarantees, life/ROI percentages, and certificate numbers belong in engineering documents and the formal offer—as offered / as published.
RFQ fields that keep GRE screen-tube quotes comparable
Copy these into the enquiry so screen quotes stay comparable and do not collapse into a vague “send GRE screens” ask.
| RFQ field | What to write | Honesty bound |
|---|---|---|
| Sand-control / screen intent | Screened completion intentional (or state if method still open) | Do not hide an open gravel-pack / steel-screen debate |
| Well identity | Field/well ID, CBM / geothermal / water-source / other, horizontal vs vertical, screened-interval length class | Unknown is better than invented geometry |
| Fluid / corrosion notes | Formation / produced-fluid picture; scaling / solids issues | Align with process data |
| Pressure-class intent | Design / operating pressure band | Confirm vs offered 10–25 MPa framing as published—no invented MPa slogans |
| Temperature / geothermal notes | Continuous / upset band if geothermal or hot service | Confirm vs offered datasheet—no invented °C guarantees |
| Size / connection intent | Nominal diameter class inside offered examples if known; thread / coupling intent | Or ask engineering to propose—do not paste another tender’s slot table as “stock” |
| Slot / filtration intent | Filtration / sand-control goal in engineering terms | Do not invent micron or open-area % in the blog ask |
| Related GRE scopes | Separate RFQs for line pipe / tubing if any (or “none”) | Keep objects separate |
| Handling & later ops | Yard/rig rules; drillability / workover expectations | Live feature language: easily drillable as published |
| Evidence docs | Datasheet, size/pressure framing as offered, SY/T 6267-2006 reference as cited on offer, inspection notes, traceability, ITP if needed | No fake certificate numbers or CE/ISO/API seals |
| Project ID + engineer | Who owns duty and acceptance | Required for comparable replies |
For live catalogue framing and the published size/pressure notes, use GRE SCREEN TUBE once you are ready to match an offered configuration.
FAQ
Is “GRE screen tube” the same as “GRE screen pipe” or “fiberglass screen tube”?
In common oilfield procurement language, teams often use GRE screen tube, GRE screen pipe, and fiberglass / glass-reinforced epoxy screen for the same product-family conversation. Always confirm the offered product form (wound + slotted screen vs blank GRE pipe), diameter/thread scope, standard reference on the datasheet, and pressure band—do not assume every label means the same stick.
Does choosing a GRE screen select GRE line pipe or GRE tubing automatically?
No. Screen tube, line pipe, and tubing are related nonmetallic families but separate design and RFQ objects. Use the line-pipe and tubing sisters when those scopes are open; use this page when the screen path is open.
Can this page tell me the exact slot size or micron rating I need?
No. The live product page describes boring and slotting for filtration finish and publishes diameter / thread / ID / coupling / length examples as offered. Matching slot and filtration design to your sand-control duty belongs in engineering design and the formal offer—not in invented blog guarantees.
What pressure language appears on the live product page?
As published on the live product page: a pressure-rating band of 10 MPa–25 MPa, with FAQ language that GRE screen tubes are discussed for deep wells and high-pressure environments inside that framing. Re-confirm the current offer—this article does not invent a project-specific rating.
Where do I see live product framing?
On the live product page titled GRE SCREEN TUBE (linked once above)—catalogue scope and published size/pressure notes there; fit and RFQ framing here.
Talk to engineering
If sand-control / screened completion is intentional and a GRE screen tube is on the shortlist, start here: Talk to an Engineer. For commercial follow-up, contact sales@cnps.com once with the same duty, well type, pressure-class intent, size/connection notes, slot/filtration intent, and evidence-scope note.
