SM Jiangsu Shimai Machinery Co., Ltd.API high-pressure flowline equipment

High-Pressure Flowline Manifold Systems

High-Pressure Drilling Fluid Manifold

High-pressure drilling fluid manifolds collect drilling fluid discharged by mud pumps and deliver it through pump manifolds, standpipes and drill floor manifolds to the wellhead or working points. Working pressures cover 5,000 psi (35 MPa) to 10,000 psi (70 MPa), nominal bore 2 in to 5 in, with API 6A flanged or hammer union connections for standard, low-temperature and NACE service.

1. Product Overview

The high-pressure drilling fluid manifold is major supporting equipment for high-pressure jet drilling operations. It is used to collect, distribute, and transfer high-pressure drilling fluid discharged from multiple mud pumps.

The system usually consists of a pump manifold and a standpipe manifold. The pump manifold gathers and distributes high-pressure discharge fluid at ground level, while the standpipe manifold transfers high-pressure drilling fluid vertically on the derrick. It is an important connection and distribution unit between the drilling fluid manifold system and the high-pressure standpipe, and can be used with mud pumps, high-pressure standpipes, drill-floor lines, and wellhead operating processes.

Controlled by high-pressure valve assemblies, high-pressure mud enters the drill pipe bore and jets out through the bit, forming a stable high-pressure mud jet. This meets service requirements for normal and reverse drilling-fluid circulation and high-pressure jet drilling.

High-pressure drilling fluid manifold

2. Design Features

The pump manifold collects high-pressure discharge fluid from multiple mud pumps and distributes it according to service conditions, enabling line switching, inspection, and maintenance during continuous drilling operations.

The standpipe manifold is used for vertical high-pressure drilling-fluid transfer on the derrick. It can be used with high-pressure standpipes, drill-floor lines, and wellhead operating processes to meet high-pressure circulation and process distribution requirements at the drilling site.

The manifold has a rational bore configuration, large flow capacity, and low vibration. Connection types include API 6A flanged or union-end connections for convenient field installation, dismantling, and maintenance.

The structure is clear and valve operation is flexible, improving drilling-fluid transfer efficiency and helping reduce overall drilling cost.

3. High-Pressure Drilling Fluid Manifold / Standpipe Manifold Main Technical Parameters

Specification / ModelZG-35/LG-35ZG-70/LG-70
Working Pressure psi5,000 psi (35 MPa)10,000 psi
Nominal Bore2in~5in
Operating TemperatureL~U（-46~121℃）
Connection TypeAPI 6A flange or union-end connection
Service ConditionStandard, low-temperature, and H2S
Manufacturing StandardAPI 6A, SY/T5524, NACE MR0175

Downloads & Technical Articles

High-Pressure Drilling Fluid Manifold Resources

Technical Articles & Selection Guides

  1. Where High-Pressure Drilling Fluid Manifold Fits in Oilfield High-Pressure Systems
  2. Before Ordering High-Pressure Drilling Fluid Manifold: Pressure, Size and Connection Checks
  3. Wrong Specification, Real Field Problems: High-Pressure Drilling Fluid Manifold Selection Notes
  4. What to Inspect Before Installing High-Pressure Drilling Fluid Manifold
  5. Documents for High-Pressure Drilling Fluid Manifold: MTC, Pressure Test and NDT Records
  6. NACE Sour Service and Low-Temperature Points for High-Pressure Drilling Fluid Manifold
  7. How High-Pressure Drilling Fluid Manifold Matches Adjacent Manifold Equipment
  8. Keeping High-Pressure Drilling Fluid Manifold Reliable in Pressure-Pumping Service
  9. Replacing an Old High-Pressure Drilling Fluid Manifold When Markings Are Unclear
  10. Questions Engineering Teams Should Confirm for High-Pressure Drilling Fluid Manifold