 |
| Crude Oil Well Header Group Gathering |
Introduction
A crude oil well group header in a Group Gathering Station (GGS) is a pipe manifold that serves as a central collection point for crude oil from multiple nearby wells. It combines the oil flow from these wells and directs it into the main gathering pipeline within the GGS for further processing and transportation.
A crude oil group header in a Group Gathering Station (GGS) is typically divided into sections based on operational needs. Generally, these fall into three categories:
- Zero Header: This header handles oil from wells with little to no pressure. Oil flows by gravity into this header.
- Pressure Header: This header manages oil from wells with sufficient pressure to aid in transport. The pressure from these wells helps move the oil downstream.
- Testing Header: This header isolates oil from specific wells for testing purposes. This allows operators to assess oil quality and production rates from individual wells.
Location:
 |
| Oil Well Group Header |
Located within the GGS facility, typically near the inlet of the primary oil/gas separator.
Key points about a Group Header:
- Primary Function: The main purpose of a group header is to collect crude oil from multiple different wellhead flowlines. It acts as a central aggregation point and divides the oil according to the well pressure.
- Flow Regulation: Group headers are equipped with valves that allow operators to control the flow of oil from each individual well. This control is essential for managing production and optimizing overall output.
- Production Measurement: Metering equipment integrated into the group header enables accurate measurement of oil production from each well. This data is critical for reservoir management, production optimization, and allocation of resources and it also divides and tests the oil according to the well pressure.
A group header typically includes the following components:
- Well Connections: Individual connection points for each incoming well flowline.
- Isolation Valves: Valves for selectively shutting off flow from individual wells, allowing for maintenance or testing without disrupting the entire system.
- Pressure Monitoring: Pressure gauges to monitor the pressure within the header and the individual flowlines.
- Flow Measurement (Optional): Flow measurement devices, which may or may not be included depending on the specific design, to quantify the flow rate from each well.
