A unified formula for determination of wellhead pressure and bottom-hole pressure

摘要: Abstract The number of gas injection or exploitation projects is on fast increase with growing energy needs and environmental problems. Of these projects, the calculation control wellhead pressure bottom-hole in wellbores are usually key steps. However, methods used to predict multifarious, making program writing practical application inconvenient. In this study, a unified formula derived from differential equations one-dimensional steady pipe flow applicable both wells production was presented for pressure. recalculation traditional numerical method same corroborated well accuracy formula, positive- reverse checking verified its reliability. Basic data Shenhua CCS project were studying influence injected temperature, geothermal gradient rate wellbore by applying formula. results can provide technical guidance operation.