Flowline design for dual string completed wells.
Flowline design for dual string completed wells.
(OP)
Hello,
This is my first real pipeline design at my place of work (I just left school). I have been asked to do the flowline concept design for two wells. The challenge I have is that both wells are dual string completed. My question is, is it better to construct four flowlines to the processing facility or use a manifold to collect both strings and then use two gathering lines to flow the fluid to the processing facility ( the wells are 1km and 3km from the processing facility)? is there a standard to follow with regards to dual completed wells? Any ideas and pointer as to what to do is really appreciated.
This is my first real pipeline design at my place of work (I just left school). I have been asked to do the flowline concept design for two wells. The challenge I have is that both wells are dual string completed. My question is, is it better to construct four flowlines to the processing facility or use a manifold to collect both strings and then use two gathering lines to flow the fluid to the processing facility ( the wells are 1km and 3km from the processing facility)? is there a standard to follow with regards to dual completed wells? Any ideas and pointer as to what to do is really appreciated.





RE: Flowline design for dual string completed wells.
RE: Flowline design for dual string completed wells.
RE: Flowline design for dual string completed wells.
It depends on why this / these wells are being dual strung and whether the reservoir engineers want to keep the fluids separate or not.
Maybe they want to test one formation whilst producing the other - Can't be done if you co-mingle at the well head.
Maybe one needs or uses a different arrival pressure at the CPF - many CPFS have different pressure manifolds - again can't be done if you've co-mingled at the wellhead.
So in short, you need to ask the reservoir guys / process engineers what they want to do with this well. They should have produced a P&ID for you to work off or a design description, not leave it up to you.
There are many different ways of collecting well fluids dependant on process requirements, distance and orientation from the wellhead and how they operate pressure control and design pressure breaks.
Welcome to the world of pipeline design - it's not a simple cookbook approach, but a balancing between competing issues.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Flowline design for dual string completed wells.
RE: Flowline design for dual string completed wells.
David Simpson, PE
MuleShoe Engineering
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist
RE: Flowline design for dual string completed wells.
The field is actually an oil producing field. And all the separation is to be done at the flow station. As you guys have suggested I will speak to the reservoir guys on the wellheads configuration.