Product Overview
The Dual Activated Circulation Valve is a multi-function dual-action circulation rebuilding tool specially designed for coiled tubing downhole tool strings, integrating two independent circulation activation mechanisms: burst disc pressure rupture actuation and drop ball shear pin piston actuation, to handle different downhole circulation failure conditions.
Scenario 1 (No initial circulation available): Build internal pressure inside the coiled tubing string; once pressure exceeds the rated rupture pressure of the built-in burst disc, the disc ruptures to create a flow channel between coiled tubing and annulus, re-establishing fluid circulation. Scenario 2 (Normal circulation can be built): Operators drop a ball inside the tubing, build pressure to push the internal piston downward to shear pre-installed shear pins, side circulation ports open to communicate tubing inner bore and annulus to restore stable downhole circulation.
This dual-action circulation valve supports fully customizable technical parameters: various burst disc rupture pressure ratings are optional, and the drop ball activation shear pressure can be freely adjusted to match diverse well depth, formation pressure and coiled tubing construction schemes. 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 constructed 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, make-up length and standard 5,000psi burst pressure specifications, equipped with standard AMMT and PAC bottom connection threads for universal compatibility with mainstream coiled tubing connectors and downhole service tools. Custom burst disc rupture pressure, custom drop ball activation shear pressure, 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 Burst Pressure | Working Condition Grade | Bottom Connection Thread |
|---|---|---|---|---|---|---|
| L1181690120 | 1-11/16" | 0.28" | 10.5" | 5,000psi | STD Standard | 1" AMMT |
| L1181750120 | 1-3/4" | 0.28" | 10.5" | 5,000psi | STD Standard | 1" AMMT |
| L1182125120 | 2-1/8" | 0.28" | 12" | 5,000psi | STD Standard | 1-1/2" AMMT |
| L1182875120 | 2-7/8" | 0.75" | 14.5" | 5,000psi | STD Standard | 2-3/8" PAC |
| L1183125120 | 3-1/8" | 0.75" | 15" | 5,000psi | STD Standard | 2-3/8" PAC |
| L1181690320 | 1-11/16" | 0.28" | 10.5" | 5,000psi | H₂S Sour Service | 1" AMMT |
| L1181750320 | 1-3/4" | 0.28" | 10.5" | 5,000psi | H₂S Sour Service | 1" AMMT |
| L1182125320 | 2-1/8" | 0.28" | 12" | 5,000psi | H₂S Sour Service | 1-1/2" AMMT |
| L1182875320 | 2-7/8" | 0.75" | 14.5" | 5,000psi | H₂S Sour Service | 2-3/8" PAC |
| L1183125320 | 3-1/8" | 0.75" | 15" | 5,000psi | H₂S Sour Service | 2-3/8" PAC |
Note: Custom burst disc rupture pressure rating, adjustable drop ball activation shear pressure, outer diameter, inner bore flow size, anti-sulfur passivation coatings and non-standard length dual activated circulation valves are available via engineering consultation.
Core Features & Advantages
Dual independent circulation activation modes for all working conditions: burst disc pressure rupture for emergency no-circulation situations; drop ball shear piston actuation for controllable normal circulation switching, one tool solves two different downhole circulation recovery demands
Multi-selectable burst disc rupture pressure ratings, flexible matching for different wellbore pressure thresholds:
Fully adjustable drop ball activation shear pressure, modify shear pin quantity and specification to customize actuation trigger pressure per customer construction requirements:
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", 1-3/4", 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:
Compact integrated dual-action valve body structure, easy to assemble into bottom coiled tubing tool string, matched with release dart and drop ball operation tools to form complete circulation control assembly:
Precision CNC machined high-strength alloy steel valve body, excellent pressure resistance, erosion and fatigue resistance to extend continuous long-term downhole service cycle:
Multi-dimensional customizable technical parameters, including burst disc rupture pressure, drop ball activation shear pressure, 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 dual-mode emergency circulation recovery
2. Conventional sweet crude oil well coiled tubing dual-mode circulation control service (STD standard service grade)
3. High-H₂S sour gas well corrosive environment dual-actuation circulation rebuilding emergency operations (H₂S sour service grade)
4. Two types of downhole circulation failure emergency treatment: total circulation loss with no initial flow, and controllable circulation switching for normal construction, matched with drop-ball and release dart coiled tubing operation tools
5. Long-term multi-condition circulation switching control and emergency flow channel protection for coiled tubing strings in onshore and offshore oilfields
Standard Delivery Package
Complete dual activated circulation valve main body with built-in burst disc installation base and piston shear pin assembly
Spare burst disc kit with optional rupture pressure ratings and adjustable shear pin spare set for field pressure modification
Full factory inspection test report including pressure resistance, burst disc rupture pressure calibration and drop ball shear actuation pressure testing data
Product dimension drawing and official dual-mode activation, installation & 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 dual activated circulation valve passes pressure resistance, burst rupture calibration and drop ball shear actuation performance testing before delivery
Free professional technical support: Our oilfield downhole tool engineering team provides tool string matching, burst disc pressure & drop ball shear pressure selection guidance and parameter consultation free of charge
Long-term spare parts supply: All burst disc and shear pin consumable accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom burst rupture pressure ratings, custom drop ball actuation shear pressure, bottom thread profiles, anti-corrosion coatings and special size dual activated circulation valves based on customer technical drawings
FAQ
Q1: What is the core function of a Dual Activated Circulation Valve??
The Dual Activated Circulation Valve is a dual-action coiled tubing circulation recovery tool with two independent activation mechanisms. If no initial circulation exists, internal pressure ruptures the built-in burst disc to re-establish annulus flow. If normal circulation can be built, drop a ball to build pressure, shear pins break to open side circulation ports for controllable flow switching. Q2: What adjustable customizable parameters does this dual activated circulation valve support? A2: Two core adjustable parameters: various burst disc rupture pressure ratings for selection; the drop ball activation trigger shear pressure can be freely adjusted by modifying shear pin quantity and specifications to match different well construction pressure thresholds. Q3: What range of outer diameter sizes do these dual activated circulation valves support? A3: Our standard production lineup fully covers 1-11/16", 1-3/4", 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 dual activated circulation valves with special burst disc pressure or custom drop ball actuation shear pressure 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 dual activated dual-action circulation valves, ball activated shear pin circulation valves, burst disc 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 disc rupture calibration and drop ball shear actuation 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, adjustable drop ball activation shear pressure, 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.
