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Inflatable Packer

    Inflatable Packer

    Inflatable Packers are high-performance downhole zonal isolation tools categorized under Well Completion & Stimulation Equipment & Tool Strings, manufactured in strict accordance with API 11D1 international petroleum industry standards. Unlike conventional mechanical packers with fixed outer diameters, inflatable packers adopt hydraulic inflation working principle, featuring ultra-high expansion ratio and powerful wellbore adaptability. They are widely used for layered isolation, fluid shutoff, segmented injection and reservoir stimulation in onshore and offshore oil wells, gas wells, water in...
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1. Product Description

Inflatable Packers are high-performance downhole zonal isolation tools categorized under Well Completion & Stimulation Equipment & Tool Strings, manufactured in strict accordance with API 11D1 international petroleum industry standards. Unlike conventional mechanical packers with fixed outer diameters, inflatable packers adopt hydraulic inflation working principle, featuring ultra-high expansion ratio and powerful wellbore adaptability. They are widely used for layered isolation, fluid shutoff, segmented injection and reservoir stimulation in onshore and offshore oil wells, gas wells, water injection wells and horizontal deviated wells, serving as essential core tools for modern precision well completion operations.
A complete inflatable packer assembly consists of high-strength alloy steel central mandrel, precision inflation control valve, multi-layer wire-reinforced rubber sealing element, anti-extrusion protection structure and standard API connecting threads. The slim original outer diameter enables smooth running through tight casing sections, deformed wellbores and restricted borehole intervals. After reaching the designed target depth, surface pressurized fluid is injected into the internal inflation cavity to radially expand the rubber element, which closely fits the casing inner wall or open-hole formation wall to form a stable high-pressure sealing barrier. This structure effectively isolates different oil, gas and water layers, preventing interlayer channeling and fluid cross-flow.
Our inflatable packer series includes cased-hole, open-hole, retrievable and permanent types, supporting customized high-temperature and anti-sulfur configurations. The reinforced composite rubber element resists extrusion deformation and aging failure under long-term high temperature, high pressure and corrosive working conditions. The built-in one-way inflation valve avoids premature setting during running and ensures reliable locking after inflation. With excellent pressure resistance, temperature resistance and wellbore compatibility, this product greatly improves the success rate of fracturing, acidizing, squeeze cementing and layered water injection operations, reduces well workover times, and provides stable and long-lasting zonal isolation solutions for complex oil and gas reservoirs.

2. Technical Specifications & Parameters

Parameter Item
Technical Standard
Product Name
API 11D1 Standard Oilfield Inflatable Packer
Executive Standard
API 11D1, ISO 9001, CE Export Certification
Product Classification
Cased Hole / Open Hole, Retrievable / Permanent Type
Matching Casing Size
4-1/2”, 5-1/2”, 7”, 9-5/8”, Custom Sizes Available
Maximum Expansion Ratio
1.6 ~ 2.2 Times of Original OD
Working Temperature
Standard 150℃, Custom High Temp up to 180℃
Differential Pressure Resistance
25MPa Standard, Max 35MPa Custom Version
Sealing Material
NBR Rubber, Fluororubber (H2S/CO2 Corrosion Resistant)
Main Body Material
4140 Alloy Steel, Anti-sulfur Alloy Optional
Thread Standard
API Standard Tubing & Casing Thread
Core Application
Zonal Isolation, Fracturing, Acidizing, Layered Injection, Cementing

3. Company Profile

Sanmen Machinery Co., Ltd. is a professional manufacturer and global exporter focused on R&D, precision machining and full-set matching of API standard downhole completion tools, with over 18 years of oilfield equipment production experience. The company specializes in inflatable packers, mechanical packers and supporting well tool strings, providing one-stop zonal isolation solutions for global onshore and offshore oilfield engineering projects.
Our factory owns standardized CNC precision machining workshops, professional rubber vulcanization production lines and independent high-pressure simulation test laboratories. All steel bodies undergo integral forging and stress relief heat treatment to eliminate structural deformation. Rubber sealing elements adopt secondary composite vulcanization and wire reinforcement technology to enhance extrusion resistance and aging stability. Every inflatable packer undergoes strict inflation testing, differential pressure sealing inspection and high-temperature aging simulation before delivery, fully complying with API 11D1 industry specifications. Our professional R&D team optimizes internal valve structure and rubber formulas to develop customized products for damaged casing, irregular wellbores and high-corrosion sulfur-containing reservoirs.
We adopt factory direct sales model to cut intermediate costs, supplying high-reliability inflatable packers and complete tool strings to more than 30 countries across the Middle East, Southeast Asia, Africa and Latin America. We provide full-cycle services including well condition parameter matching, tool string scheme design, factory pre-assembly testing, standardized export packaging, on-site technical guidance and lifelong after-sales spare parts supply, helping customers improve completion efficiency and reduce long-term field operation costs.


Frequently Asked Questions (FAQ)

Q1: What are the core advantages of inflatable packers over mechanical packers?
A1: Inflatable packers feature ultra-high expansion ratio and strong wellbore adaptability. They can adapt to deformed casing, corroded well walls and irregular boreholes where fixed-diameter mechanical packers cannot work. They run smoothly with slim pass-through diameter and achieve full perimeter sealing, effectively solving leakage problems in complex well conditions.
Q2: Can the packer operate stably in high-temperature and high-sulfur oil wells?
A2: Yes. We provide fluororubber sealing elements and anti-sulfur alloy body options. The customized configuration resists high-temperature aging and H2S/CO2 corrosion, maintaining stable sealing performance under harsh downhole environments and extending service life greatly.
Q3: Can you customize special specifications for unique well conditions?
A3: Full customization is available. Engineers adjust outer diameter, expansion ratio, temperature and pressure grade according to customer casing size, well depth and fluid medium, designing exclusive packer solutions for horizontal wells, ultra-deep wells and heavy oil reservoirs.
Q4: What export certification and test reports can you provide?
A4: All products comply with API 11D1 and ISO 9001 standards with CE certification. We can provide material certificates, inflation test reports, high and low pressure test records and factory inspection documents to support overseas project acceptance and customs clearance.
Q5: What is the delivery time and after-sales guarantee?
A5: Standard models are in stock with delivery within 8–12 working days. Customized high-temperature and anti-sulfur packers take 22–35 working days. We offer 12-month quality warranty, remote technical support and lifelong preferential supply of wearing parts to solve on-site operation problems timely.


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Related tags： Oil Well Isolation Packer Downhole Stimulation Equipment Well Completion Tool String
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Sanmon Machinery Equipments Co., Ltd. founded in 2010, is located in the beautifulcoastal city - Yantai of China. We are an integrated company for Oil & Gas Equipment ApplicantResearch, Customized Design, Order Production and Global Sales, We provide professional productsand services to the Oil and Gas Industrial Customers over 20 countries and regions. Our productscover Sucker Rod Pump Jack, Pump, Sucker rod and Accessories, Wellhead and X-mas Tree, Valves,Completion Tools, Artificial lift Equipment, Flow Control Equipment, Coil Tubing Tools, OilfieldWork Vehicles, Chemicals & Additives, Wire-line Tools, etc., and we supply Well CompletionService, Coil Tubing Work Service, snubbing service, Down-hole Pipe Cutting Work, ArtificialLifting Work, Special Tools and Vehicles Renting Service and other related services. Longcareered engineer and technicians, ISo and API strict quality control factory and excellentsales team are always our exclusive advantages.

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