Product Overview
The Burst Disc Circulation Valve is a dedicated circulation rebuilding tool matched for coiled tubing downhole intervention strings, normally installed below drop-ball matched coiled tubing service tools. When downhole blockage leads to circulation loss, operators apply preset internal pressure inside the coiled tubing string; once the internal pressure exceeds the rated rupture pressure of the built-in burst disc, the disc ruptures to create an unobstructed flow passage between the coiled tubing inner bore and the annulus, effectively re-establishing normal downhole fluid circulation, and it works in coordination with drop ball tools for complete operation flow.
This circulation valve adopts replaceable burst disc design, supporting multiple optional burst pressure ratings to match different well depth, formation pressure and construction process requirements. Two complete service grades are supplied to match diverse reservoir environments: STD standard grade for conventional sweet oil wells without hydrogen sulfide corrosive media, and H₂S sour service grade manufactured with sulfur-resistant alloy for high-H₂S corrosive sour gas well working conditions.
The standardized product lineup covers outer diameter sizes ranging from 1-11/16" to 3-1/8", with matched inner diameter and make-up length specifications, equipped with standard AMMT and PAC bottom connection threads for universal compatibility with mainstream coiled tubing connectors and downhole service tools. Custom burst pressure ratings, inner bore sizes, wall thickness and anti-sulfur passivation coatings are available upon customer technical drawing submission.
Complete Technical Specification Table
| PN Part Number | Outer Diameter OD | Inner Diameter ID | Make-Up Length | Working Condition Grade | Bottom Connection Thread |
|---|---|---|---|---|---|
| L1161690120 | 1-11/16" | 0.63" | 5.4" | STD Standard | 1" AMMT |
| L1162125120 | 2-1/8" | 0.83" | 6.4" | STD Standard | 1-1/2" AMMT |
| L1162875120 | 2-7/8" | 1.3" | 7" | STD Standard | 2-3/8" PAC |
| L1163125120 | 3-1/8" | 1.37" | 7" | STD Standard | 2-3/8" PAC |
| L1161690320 | 1-11/16" | 0.63" | 5.4" | H₂S Sour Service | 1" AMMT |
| L1162125320 | 2-1/8" | 0.83" | 6.4" | H₂S Sour Service | 1-1/2" AMMT |
| L1162875320 | 2-7/8" | 1.3" | 7" | H₂S Sour Service | 2-3/8" PAC |
| L1163125320 | 3-1/8" | 1.37" | 7" | H₂S Sour Service | 2-3/8" PAC |
Note: Custom burst rupture pressure rating, outer diameter, inner bore flow size, anti-sulfur passivation coatings and non-standard length burst disc circulation valves are available via engineering consultation.
Core Features & Advantages
Customizable burst disc rupture pressure design, various pressure rating options to adapt to different wellbore pressure environments and coiled tubing construction technical schemes:
Fast circulation recovery function: internal pressure overload triggers disc rupture instantly to rebuild full-flow circulation channel between tubing and annulus when downhole blockage cuts off fluid flow
Compact integrated valve body structure, simple assembly into coiled tubing bottom tool string, perfectly matched with drop-ball operation tools to form complete circulation control assembly:
Dual service grade design: STD standard version for conventional sweet oilfield working conditions, H₂S sulfur-resistant alloy version for highly corrosive high-H₂S sour gas well service
Complete outer diameter series compatible with 1-11/16", 2-1/8", 2-7/8" and 3-1/8" coiled tubing matching assemblies, covering all mainstream small and medium-size coiled tubing intervention service demands:
Simple external threaded connection design, convenient for fast disassembly and assembly with various coiled tubing connectors on site:
Precision CNC machined high-strength alloy steel valve body, excellent pressure resistance, erosion and fatigue resistance to extend continuous long-term downhole service cycle:
Customizable burst pressure rating, outer diameter, inner bore flow size, bottom thread specification and anti-sulfur surface passivation coatings to satisfy unique proprietary coiled tubing circulation control requirements:
Application Scenarios
1. Coiled tubing sand washing, well cleaning, gas lifting, perforating and other downhole intervention treatments requiring emergency circulation recovery
2. Conventional sweet crude oil well coiled tubing intervention flow control service (STD standard service grade)
3. High-H₂S sour gas well corrosive environment coiled tubing circulation emergency rebuilding operations (H₂S sour service grade)
4. Downhole blockage, flow loss emergency treatment matched with drop-ball coiled tubing operation tools
5. Long-term circulation control and emergency flow channel protection for coiled tubing strings in onshore and offshore oilfields
Standard Delivery Package
Complete burst disc circulation valve main body with built-in replaceable burst disc installation base
Multiple spare burst discs with customizable rupture pressure ratings for field replacement
Full factory inspection test report including pressure resistance, disc rupture pressure calibration and flow channel test data
Product dimension drawing and official installation, matching tool string & operation instruction manual
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative working hours, whichever condition is reached first
Full factory inspection: Each finished burst disc circulation valve passes pressure resistance, burst pressure calibration and flow channel performance testing before delivery
Free professional technical support: Our oilfield downhole tool engineering team provides tool string matching, burst pressure selection guidance and parameter consultation free of charge
Long-term spare parts supply: All burst disc consumable accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom burst rupture pressure ratings, bottom thread profiles, anti-corrosion coatings and special size burst disc circulation valves based on customer technical drawings
FAQ
Q1: What is the core function of a Burst Disc Circulation Valve??
The Burst Disc Circulation Valve is a coiled tubing circulation rebuilding tool installed in the bottom tool string together with drop ball tools. When downhole blockage cuts off fluid circulation, internal tubing pressure overload ruptures the built-in disc to create a new flow passage between coiled tubing and annulus, restoring normal downhole circulation. Q2: What is the most prominent structural advantage of this burst disc circulation valve? A2: The valve supports multiple optional burst disc rupture pressure ratings, allowing engineers to select matched pressure values according to actual wellbore pressure and construction scheme; meanwhile, the burst disc is replaceable for easy on-site maintenance. Q3: What range of outer diameter sizes do these burst disc circulation valves support? A3: Our standard production lineup fully covers 1-11/16", 2-1/8", 2-7/8" and 3-1/8" outer diameter specifications, compatible with global mainstream small and medium-size coiled tubing matching assemblies. Q4: What is the difference between STD standard grade and H₂S sour service grade? A4: STD standard grade is manufactured for conventional sweet oil wells without hydrogen sulfide corrosive fluid. H₂S sour service grade adopts sulfur-resistant alloy substrate and special anti-sulfur passivation coating to resist chemical corrosion in high-H₂S sour gas well environments. Q5: What is the standard production lead time for bulk purchase orders? A5: All standard PN part numbers are kept in factory inventory, goods can be delivered within 7–15 working days. Customized burst disc circulation valves with special burst pressure ratings or custom flow bore dimensions require 20–35 working days production cycle, subject to total order quantity.
Get Custom Datasheet & Factory Quote
We are a professional OEM & ODM manufacturer focused on full series coiled tubing downhole service tools, covering burst disc adjustable pressure circulation valves, double dart dual-stage sealing check valves, double flapper dual-stage sealing check valves, big ID single flapper check valves, grapple dimple composite connectors, grub screw heavy-duty connectors, double dimple-on connectors, single dimple-on connectors, double roll-on connectors, single roll-on connectors, internal grapple connectors, external grapple connectors, logging heads and tubing hangers. Every finished product undergoes strict factory pressure resistance, burst pressure calibration and flow channel testing, with complete material inspection certification attached to each shipment. Please share your detailed technical requirements, including target outer diameter size, required burst disc rupture pressure rating, working environment (STD standard or H₂S sour service) and customized specification demands. Our dedicated oilfield downhole tool engineering team will send complete detailed technical datasheets and competitive factory wholesale quotations within 24 business hours.
