1. Check interstage line temperatures to determine which valves have been removed from a cylinder. 2. Remove disabled valves, cages, and valves in ends taken…
Category: Wellhead Compression
Attempting to utilize a single compressor to service both the casing and tubing flows on a dual completion well can present some real problems. On…
field compressor to trip-off prematurely. In this case, the field operators were reporting that they could not operate a compressor suction below 70 PSIG. Their…
To further complicate the adjustment of a field compressor, one needs to be aware of certain transient effects that the well imposed on the compressor.…
If a compressor has an excessively high second-stage (crankend) discharge temperature and a low first-stage (head-end) discharge temperature, one should proceed as follows: • Reduce…
As the wellhead pressure falls, the differential pressure that the field compressor must deliver increases. This is because the collection header into which the compressor…
There are three fundamental limits to which all field compressors are subject: • Compressor rod loading • Speed • Engine horsepower In addition to calculating…
The easiest, but least cost effective method, to operate a field compressor is the crank-end mode. When only the Crank-end (i.e. second stage) is in…
This incident illustrates the importance of adjusting field compressor operation to maintain a minimum velocity in the production tubing. The velocity must be sufficient to…
Figure 4-1 illustrates a typical two-stage compressor. Machines of this type range from 30 to 300 horsepower. They are driven by a gas engine; fueled…