- Title : Well Performance Manual by Hemanta Mukherjee
- Publish : Schlumberger Educational Services 300 Schlumberger Drive SugarLand, Texas 77478
- Type Document : pdf
- Release : June 1991
- Total Page : 171 Page
- Size : 4.89 Mb
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Decrypted Contents
A well can be defined as an interphasing conduit between the oil and gas reservoir and the surface needed to produce reservoir fluid handling facility. This interface is ble asset. The physical descripto the surface, making it a tangi- For optimal production, a well tion of a well is quite involved. engineering considerations. The design requires some complex optimal production refers to a maximum return on investment. The physical description of a typical oil or gas well is shown in Fig. 1.1.
In the performance of a well the Fig. 1 .I Possible pressure losses in the producing system drainage volume of the reservoir for aflowing well. draining to the well plays an important role. A well a br gas production scyostmembin. Aed p wroitdhu tchtieo rne ssyersvteomir disr a tihnuinscg o imntpoo iste dis onfo trhme afldlylo cwalilnegd mana jooirl components -
- porous medium
- completion (stimulation, perforations, and gravel pack)
- vertical conduit with safety valves and chokes
- artificial lift system such as pumps, gas lift valves, etc
- horizontal flowlines with chokes, and other piping components e.g. valves, elbows, etc.
In an oil or gas production system, the fluids flow from the drainage in the reservoir to the separator at the surface. The average pressure within the drainage boundary is often production system and is assumed to remain constant over a fixed time interval during alled the average reservoir pressure. This pressure controls the flow through a depletion. When this pressure changes, the well's performance changes and thus the well needs to be re-evaluated. The average reservoir pressure changes because of normal reservoir depletion or artificial pressure maintenance with water, gas, or other chemical injection.
The separator pressure at the surface is designed to optimize production and to retain lighter hydrocarbon components in the liquid phase. This pressure is maintained by using mechanical devices such as pressure regulators. As the well produces or injects, there is a a continuous pressure gradient from the reservoir to the separator.
The separator pressure at the surface is designed to optimize production and to retain lighter hydrocarbon components in the liquid phase. This pressure is maintained by using mechanical devices such as pressure regulators. As the well produces or injects, there is a a continuous pressure gradient from the reservoir to the separator.
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