Choke manifold is an essential component used in well control operations to manage and regulate pressure during drilling or production. It plays a crucial role in controlling well kicks and preventing blowouts by allowing the controlled release of fluids from the wellbore. When the blowout preventer is closed, the choke valve can be adjusted to maintain a slight overbalance between the bottom hole pressure and formation pressure, thus preventing further influx of formation fluids into the well. Additionally, it enables a soft shut-in when the well is closed, and can also be used to relieve pressure and allow controlled flow when necessary, protecting the well integrity.
The choke manifold typically consists of a choke valve, gate valve, piping, fittings, and pressure gauges. The choke valve comes in different types—manual, hydraulic, and positive—allowing operators to regulate the flow and manage casing pressure effectively. Gate valves are used for direct blowout operations, especially when high pressure is involved.
Our company offers choke manifolds with five pressure classes: 14MPa, 21MPa, 35MPa, 70MPa, and 105MPa. Custom designs are available based on specific customer requirements. Below is a detailed specification table:
This comprehensive system ensures safe and efficient well control under various conditions. Our API 16C choke and kill manifolds are manufactured to meet international standards, including ISO 9001:2000, and are widely used in oil and gas operations worldwide. The products are packaged in wooden cases for safe transportation and are sourced from China. With a strong brand name JELIN, we deliver reliable and high-quality solutions tailored to the needs of our customers.
| Name | Choke Manifold | Kill Manifold | |||||
| Model | JG/S2-35 | JG/SY-35 | JG/SY2-70 | JG/S2Y2-105 | YG-35 | Y-70 | YG-105 |
| Main diameter and sideward diameter | 3 1/8 × 2 1/16 (80 × 52) | 4 1/16 × 2 9/16 (103 × 65) | 4 1/16 × 3 1/16 (103 × 78) | ||||||
| Working pressure (psi / MPa) | 3000 (21) / 5000 (35) | 3000 (21) / 10000 (70) | 5000 (35) | 10000 (70) | 15000 (105) | ||
| Working temperature (°C / °F) | LU: -46°C ~ +121°C (-50°F ~ 250°F) | ||||||
| Working mediums | Drilling fluid, mud, and petroleum (including hydrogen sulfide) | ||||||
| Control type | Two-winged manual choke valve | Two-winged hydraulic manual choke valve | Three-winged hydraulic manual choke valve | Four-winged double-hydraulic manual choke valve | Two-winged main relief valve | ||
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