Description
Flexible Choke Kill Line
API 16C Flexible Choke and Kill Line for BOP Well Control Systems
SGPE Flexible Choke Kill Line provides a reliable high-pressure flexible connection for oil and gas drilling operations. It works in land drilling rigs, offshore drilling platforms, semi-submersible drilling vessels, drilling ships, BOP systems, choke manifolds, kill manifolds, wellhead control systems, and high-pressure drilling pipelines.
During drilling, rig equipment may move because of vibration, wave motion, wind load, drilling load changes, platform movement, or installation adjustment. Rigid piping cannot always absorb this movement safely. SGPE flexible choke and kill line helps reduce piping stress and supports stable pressure control in harsh oilfield environments.
This API 16C flexible choke and kill hose transfers oil, gas, drilling mud, drilling fluid, and other high-pressure oilfield media. It mainly works as a choke line, kill line, relief line, blowout control line, BOP flexible line, well control hose, and high-pressure drilling hose.
SGPE manufactures this product according to API Spec 16C and SY/T 5323-2004. The product carries API Monogram License No. 16C-0374, which helps drilling contractors, rig manufacturers, offshore drilling companies, and oilfield equipment buyers source a dependable line for critical well control operations.
Need an API 16C choke and kill hose for BOP, choke manifold, or kill manifold service? Contact SGPE for datasheet, pressure rating selection, and quotation.
Product Overview
The flexible choke kill line works under high pressure, high flow impact, abrasive drilling mud, heat, vibration, repeated movement, and severe service conditions. It supports safe fluid transfer between the BOP stack, wellhead control system, choke manifold, kill manifold, mud system, and related high-pressure piping.
In land and offshore drilling operations, a choke and kill line must handle pressure surges, abrasive solids, flame exposure, tight installation space, and frequent equipment movement. Therefore, SGPE focuses on a strong pressure-bearing structure, abrasion-resistant inner wall, fire-resistant outer protection, and reliable bending performance.
This product suits:
- Oil and gas drilling contractors
- Offshore drilling companies
- Rig manufacturers
- Well control service companies
- Petroleum engineering contractors
- Oilfield equipment distributors
- BOP system and manifold package suppliers
It gives buyers a practical solution for API 16C choke and kill hose, BOP choke line, BOP kill line, offshore well control hose, high-pressure drilling mud hose, and pressure control flexible line.
Key Features of SGPE Flexible Choke Kill Line
High Working Pressure up to 20,000 psi
SGPE supplies flexible choke kill lines with rated working pressures from 35 MPa to 138 MPa, equal to 5,000 psi to 20,000 psi. These pressure classes cover common oilfield well control, BOP system, choke manifold, kill manifold, pressure relief, and high-pressure drilling applications.
Abrasion-Resistant Inner Wall
Drilling mud may contain sand, barite, cuttings, and other abrasive solids. The abrasion-resistant inner wall helps maintain smooth flow, reduce wear, and extend service life during drilling mud transfer, choke manifold service, and kill line operation.
Fire and Flame Resistance
Well control operations may face high-temperature and fire-risk conditions. SGPE improves the outer protection with fire-resistant and flame-resistant performance. This structure supports safer service in harsh drilling sites and emergency pressure control operations.
Flexible Connection for Moving Drilling Equipment
The line absorbs relative movement between land rigs, offshore platforms, semi-submersible drilling vessels, drilling ships, and fixed high-pressure piping. As a result, it reduces stress on the piping system and improves installation safety.
Thermal Insulation Performance
The product offers thermal insulation performance for drilling environments where temperature stability matters. This feature supports safer operation in complex oilfield well control conditions.
Suitable for Multiple Oilfield Media
SGPE flexible choke and kill line transfers oil, gas, drilling mud, drilling fluid, and mixed high-pressure media commonly used in oil and gas drilling operations.
Product Construction
| Part | Description |
|---|---|
| Inner Layer | Abrasion-resistant inner wall designed for drilling mud, oil, gas, drilling fluid, and other high-pressure oilfield media |
| Pressure-Bearing Structure | Reinforced structure for stable pressure performance in well control, choke line, and kill line service |
| Thermal Protection | Thermal insulation design for demanding oilfield operating conditions |
| Outer Protection | Fire-resistant and flame-resistant outer protection for harsh drilling environments |
| End Connection | Project-specific connection for BOP, manifold, wellhead, or high-pressure piping requirements |
| Service Position | Choke line, kill line, relief line, blowout control line, and BOP flexible connection |
Main Oilfield Applications
SGPE Flexible Choke Kill Line fits demanding oil and gas drilling and well control applications, including:
- Choke manifold connection in oilfield well control systems
- Kill manifold connection for pressure control and well killing operations
- BOP system high-pressure flexible connection
- BOP choke line and BOP kill line service
- Blowout control line for oil and gas drilling wells
- High-pressure drilling mud transfer line
- Oil and gas pressure control line on land drilling rigs
- Relief line for drilling pressure management
- Flexible connection between rig equipment and fixed piping
- Offshore drilling platform high-pressure piping connection
- Semi-submersible drilling vessel well control system
- Drilling ship choke and kill line service
- Wellhead control equipment and pressure control package
The line performs especially well where equipment movement, platform motion, vibration, limited space, or changing installation dimensions make rigid piping difficult or unsafe.
Applicable Standards and Product Information
| Item | Specification |
|---|---|
| Product Name | Flexible Choke Kill Line |
| Applicable Standard | API Spec 16C, SY/T 5323-2004 |
| API License No. | 16C-0374 |
| Main Service | Choke line, kill line, relief line, blowout control line, BOP flexible line |
| Working Medium | Oil, gas, drilling mud, drilling fluid, and other high-pressure oilfield media |
| Rated Pressure Range | 35 MPa to 138 MPa / 5,000 psi to 20,000 psi |
| Main Use Environment | Land drilling rigs, offshore drilling platforms, semi-submersible drilling vessels, drilling ships |
| Typical System | BOP system, choke manifold, kill manifold, wellhead control system, high-pressure drilling piping |
Technical Specifications
Specification and Basic Parameters for Flexible Choke Kill Line
| Inner Diameter mm (in) | Rated Working Pressure MPa (psi) | Test Pressure MPa (psi) | Min. Burst Pressure MPa (psi) | Min. Bending Radius (mm) |
|---|---|---|---|---|
| 50.8 (2″) | 35.0 (5,000) | 52.5 (7,500) | 78.75 (11,250) | 900 |
| 64 (2-1/2″) | 35.0 (5,000) | 52.5 (7,500) | 78.75 (11,250) | 1000 |
| 76.2 (3″) | 35.0 (5,000) | 52.5 (7,500) | 78.75 (11,250) | 1000 |
| 89 (3-1/2″) | 35.0 (5,000) | 52.5 (7,500) | 78.75 (11,250) | 1100 |
| 101.6 (4″) | 35.0 (5,000) | 52.5 (7,500) | 78.75 (11,250) | 1200 |
| 50.8 (2″) | 70.0 (10,000) | 105.0 (15,000) | 157.5 (22,500) | 1000 |
| 63.5 (2-1/2″) | 70.0 (10,000) | 105.0 (15,000) | 157.5 (22,500) | 1100 |
| 76.2 (3″) | 70.0 (10,000) | 105.0 (15,000) | 157.5 (22,500) | 1150 |
| 89 (3-1/2″) | 70.0 (10,000) | 105.0 (15,000) | 157.5 (22,500) | 1200 |
| 101.6 (4″) | 70.0 (10,000) | 105.0 (15,000) | 157.5 (22,500) | 1250 |
| 50.8 (2″) | 105.0 (15,000) | 157.5 (22,500) | 236.25 (33,750) | 1000 |
| 63.5 (2-1/2″) | 105.0 (15,000) | 157.5 (22,500) | 236.25 (33,750) | 1150 |
| 76.2 (3″) | 105.0 (15,000) | 157.5 (22,500) | 236.25 (33,750) | 1200 |
| 50.8 (2″) | 138.0 (20,000) | 207.0 (30,000) | 310.0 (45,000) | 900 |
| 64 (2-1/2″) | 138.0 (20,000) | 207.0 (30,000) | 310.0 (45,000) | 1100 |
| 76.2 (3″) | 138.0 (20,000) | 207.0 (30,000) | 310.0 (45,000) | 1200 |
Available Pressure Classes
SGPE supplies API 16C flexible choke and kill lines for several common well control pressure levels.
| Pressure Class | Typical Oilfield Application |
|---|---|
| 5,000 psi | Standard drilling pressure control, relief line, and manifold connection |
| 10,000 psi | High-pressure BOP system, choke manifold, and kill manifold service |
| 15,000 psi | Critical well control operations and demanding drilling projects |
| 20,000 psi | Severe high-pressure choke and kill service for harsh drilling conditions |
End Connection and Custom Options
SGPE can support project-based requirements for different drilling rigs, BOP systems, choke manifolds, kill manifolds, and wellhead pressure control packages.
| Custom Item | Available Support |
|---|---|
| Pressure Rating | 5,000 psi, 10,000 psi, 15,000 psi, 20,000 psi |
| Inner Diameter | 2″, 2-1/2″, 3″, 3-1/2″, 4″ |
| Line Length | Supplied according to rig layout and installation requirements |
| End Connection | Selected according to BOP, manifold, wellhead, or high-pressure piping connection needs |
| Working Medium | Oil, gas, drilling mud, drilling fluid, and mixed high-pressure oilfield media |
| Operating Environment | Land drilling rig, offshore platform, semi-submersible drilling vessel, drilling ship |
| Documentation | Product documents and inspection requirements can follow project needs |
When buyers request a custom flexible choke kill line, SGPE recommends providing drawings, connection requirements, pressure class, hose length, bending radius, and working medium. This helps the team confirm technical suitability and reduce selection risk.
How to Select the Right Flexible Choke and Kill Line
A correct choke and kill line improves drilling safety, pressure control, and service life. Before placing an order, buyers should confirm the following details:
| Selection Factor | What to Confirm |
|---|---|
| Working Pressure | 5,000 psi, 10,000 psi, 15,000 psi, or 20,000 psi |
| Inner Diameter | 2″, 2-1/2″, 3″, 3-1/2″, or 4″ |
| Working Medium | Oil, gas, drilling mud, drilling fluid, or mixed high-pressure oilfield media |
| Application Position | Choke line, kill line, relief line, BOP connection, manifold connection |
| Installation Space | Required length, bending radius, movement range, and layout condition |
| End Connection | Connection type according to oilfield project needs |
| Operating Environment | Land drilling rig, offshore platform, semi-submersible drilling vessel, or drilling ship |
| Standard Requirement | API Spec 16C and project-specific oilfield technical requirements |
For critical well control applications, SGPE recommends selecting the pressure rating according to actual working pressure, possible pressure surge, safety margin, working medium, operating environment, and project standard.
Inspection and Quality Control
SGPE focuses on stable product performance for high-pressure oilfield drilling service. The flexible choke kill line can support project inspection and documentation requirements based on customer needs.
Key quality focus areas include:
- Dimensional inspection
- Pressure performance verification
- Bending radius confirmation
- Appearance and marking inspection
- Connection and installation requirement check
- Documentation support according to project requirements
This process helps buyers reduce selection risk and improve reliability in BOP systems, choke manifolds, kill manifolds, and offshore drilling packages.
Why Choose SGPE Flexible Choke Kill Line?
1. API 16C Manufacturing Capability
SGPE manufactures flexible choke and kill lines according to API Spec 16C requirements. API Monogram License No. 16C-0374 helps oilfield buyers source high-pressure well control products with greater confidence.
2. Pressure Ratings from 5,000 psi to 20,000 psi
SGPE covers common pressure classes for oilfield well control systems, including 5,000 psi, 10,000 psi, 15,000 psi, and 20,000 psi. This range helps customers match different drilling rigs, choke manifolds, kill manifolds, and BOP systems.
3. Built for Harsh Oilfield Conditions
The line handles high pressure, abrasive drilling mud, vibration, repeated movement, heat, and fire-risk environments. Therefore, it suits both land drilling and offshore drilling operations.
4. Better Flexibility for Complex Installations
Offshore platforms, drilling ships, and semi-submersible drilling vessels often face movement and limited installation space. SGPE flexible choke kill line helps simplify installation and reduce stress caused by relative movement.
5. Support for Project-Based Requirements
SGPE can support different project requirements for pressure rating, size, length, connection type, bending radius, operating environment, and documentation. This helps buyers choose a suitable API 16C choke and kill hose for specific drilling and well control projects.
Ordering Information
Please provide the following details when requesting a quotation:
| Required Information | Example |
|---|---|
| Pressure Rating | 5,000 psi, 10,000 psi, 15,000 psi, or 20,000 psi |
| Inner Diameter | 2″, 2-1/2″, 3″, 3-1/2″, or 4″ |
| Line Length | According to rig layout or project drawing |
| End Connection | Connection type or connection standard |
| Application Position | Choke line, kill line, relief line, or BOP flexible connection |
| Working Medium | Oil, gas, drilling mud, drilling fluid, or mixed media |
| Minimum Bending Radius | According to installation layout |
| Operating Environment | Land rig, offshore platform, semi-submersible vessel, or drilling ship |
| Documentation Requirement | API-related documents, inspection documents, or project documents |
Clear technical information helps SGPE recommend a more suitable flexible choke kill line and provide datasheet, price, and delivery information more efficiently.
Frequently Asked Questions About Flexible Choke Kill Line
1. What is a flexible choke kill line?
A flexible choke kill line is a high-pressure flexible hose for oil and gas drilling well control systems. It connects key equipment such as the BOP system, choke manifold, kill manifold, wellhead control system, and high-pressure drilling pipeline.
SGPE Flexible Choke Kill Line transfers oil, gas, drilling mud, drilling fluid, and other high-pressure oilfield media. It also absorbs movement between drilling equipment, offshore platforms, semi-submersible drilling vessels, and fixed piping systems. This design helps drilling contractors improve installation safety and pressure control reliability in harsh oilfield environments.
2. What does API 16C mean for a flexible choke and kill hose?
API 16C refers to the industry standard for choke and kill equipment used in drilling well control systems. For buyers, API 16C matters because it relates to product design, pressure performance, service conditions, and safety requirements for high-pressure choke and kill lines.
SGPE manufactures its flexible choke and kill line according to API Spec 16C and SY/T 5323-2004. The product also carries API Monogram License No. 16C-0374. This gives oilfield buyers stronger confidence when they source an API 16C choke and kill hose for BOP systems, choke manifolds, kill manifolds, and offshore drilling applications.
3. What is the difference between a choke line and a kill line?
A choke line directs well flow from the wellbore to the choke manifold. Operators use it to control pressure during drilling, kick control, pressure relief, and blowout prevention operations.
A kill line allows operators to pump heavy drilling fluid into the wellbore. This process helps control formation pressure and supports well killing operations. Both lines play important roles in oilfield well control systems, and a flexible choke kill line gives the system more movement tolerance than rigid piping.
4. Where can SGPE Flexible Choke Kill Line be used?
SGPE Flexible Choke Kill Line suits land drilling rigs, offshore drilling platforms, semi-submersible drilling vessels, drilling ships, BOP systems, choke manifolds, kill manifolds, relief lines, blowout control lines, and wellhead pressure control packages.
It works especially well in oilfield projects where equipment movement, platform motion, vibration, limited installation space, or changing layout dimensions make rigid pipe installation difficult. Buyers often use it as a BOP choke line, BOP kill line, offshore well control hose, high-pressure drilling hose, and pressure control flexible line.
5. What pressure ratings does SGPE Flexible Choke Kill Line offer?
SGPE supplies flexible choke kill lines with rated working pressures from 35 MPa to 138 MPa, equal to 5,000 psi to 20,000 psi. These pressure classes cover common oilfield well control and high-pressure drilling applications.
| Pressure Class | Typical Oilfield Application |
|---|---|
| 5,000 psi | Standard drilling pressure control, relief line, and manifold connection |
| 10,000 psi | High-pressure BOP system, choke manifold, and kill manifold service |
| 15,000 psi | Critical well control and demanding drilling projects |
| 20,000 psi | Severe high-pressure choke and kill service |
These options help buyers match different drilling rigs, well control systems, and project specifications.
6. How should buyers choose the correct pressure rating?
Buyers should choose the pressure rating according to maximum working pressure, pressure surge, safety margin, well control requirement, drilling medium, and project standard. For example, a standard pressure control line may use a lower pressure class, while a critical BOP choke and kill line often needs 10,000 psi, 15,000 psi, or 20,000 psi service.
SGPE recommends confirming the actual drilling condition before selection. Important details include working pressure, test pressure, required burst pressure, operating environment, medium type, connection layout, and bending radius. A proper pressure class helps improve drilling safety and extend service life.
7. What sizes are available for SGPE Flexible Choke Kill Line?
SGPE offers common inner diameters such as 2″, 2-1/2″, 3″, 3-1/2″, and 4″, depending on pressure class and project requirements. These sizes cover many BOP systems, choke manifolds, kill manifolds, and high-pressure drilling piping layouts.
The product also has different minimum bending radius values for different sizes and pressure ratings. Buyers should confirm installation space, hose length, movement range, and bending radius before placing an order. This helps the flexible choke and kill hose fit the rig layout safely.
8. Can SGPE Flexible Choke Kill Line transfer drilling mud?
Yes. SGPE Flexible Choke Kill Line transfers drilling mud, drilling fluid, oil, gas, and mixed high-pressure oilfield media. Drilling mud often contains sand, barite, cuttings, and other abrasive solids, so the hose needs strong inner wall protection.
SGPE uses an abrasion-resistant inner wall to help maintain stable flow and reduce wear during drilling mud transfer, choke manifold service, kill line operation, and pressure control work. This feature makes the hose suitable for demanding mud service in oil and gas drilling projects.
9. Why does a drilling rig need a flexible choke kill line instead of rigid pipe?
A drilling rig, offshore platform, semi-submersible drilling vessel, or drilling ship may move during operation. Vibration, wave motion, wind load, drilling load change, and equipment adjustment can create stress on rigid piping.
A flexible choke kill line absorbs this movement and reduces stress on the high-pressure piping system. It also helps when the project has limited installation space or changing connection dimensions. For offshore drilling and BOP well control systems, this flexibility can improve installation safety and reduce piping strain.
10. Does SGPE Flexible Choke Kill Line resist abrasion, fire, and heat?
Yes. SGPE Flexible Choke Kill Line combines abrasion resistance, fire resistance, flame resistance, and thermal protection for harsh oilfield drilling environments.
The abrasion-resistant inner wall helps handle drilling mud with solid particles. The fire-resistant and flame-resistant outer protection supports safer service around well control equipment. In addition, the thermal insulation design helps the line perform more reliably in demanding drilling conditions where heat, pressure, and movement occur together.
11. What connection and customization options can SGPE support?
SGPE can support project-based requirements for pressure rating, inner diameter, line length, bending radius, working medium, operating environment, and end connection. Buyers can select the connection type according to BOP systems, choke manifolds, kill manifolds, wellhead equipment, or high-pressure drilling piping.
When sending an inquiry, buyers should provide pressure class, hose size, line length, connection type, application position, medium, and project standard. Clear technical information helps SGPE recommend a more suitable API 16C flexible choke and kill line and provide a faster quotation.
12. What information should buyers provide when requesting a quotation?
To get an accurate quotation for a flexible choke kill line, buyers should provide pressure rating, inner diameter, line length, end connection, application position, working medium, operating environment, bending radius, quantity, and documentation requirement.
With these details, SGPE can help buyers select the right API 16C choke and kill hose, confirm technical suitability, and provide datasheet, price, and delivery information more efficiently.
Request a Quote
Need an API 16C flexible choke kill line for a drilling rig, offshore platform, semi-submersible drilling vessel, drilling ship, BOP system, choke manifold, or kill manifold?
Contact SGPE with your required working pressure, inner diameter, line length, connection type, bending radius, working medium, quantity, and project standard. Our team will help you select a suitable API 16C flexible choke and kill line for your oilfield drilling application.
Request a datasheet, technical selection support, price, and delivery information from SGPE today.
E-Mail: info@sgpe.com
