Abstract Oil rim reservoirs are characterised with a small thickness relative to their overlying gas caps and underlying aquifers the development these planned very carefully in order avoid water coning maximise oil production. Studies have shown low recoveries from injection, while foam alternating injections resulted positive recoveries, it is viewed that an option of application chemical enh...

The production of heavy oil at Dong Do field located in CuuLong basin is a success the application advanced technologies. marginal project Vietnam, so its development requires to overcome several challenges, such as high water-cut from early stage, highly unconsolidated sandstone reservoir, flow assurance problems sour and viscous crude oil, power artificial lift system, complex treatment topsi...

We discuss a geometric method, which we refer to as Coning, for generating new Poincaré type inequalities from old ones. In particular, we derive weighted Poincaré inequalities for star-shaped domains and variant Trudinger inequalities for another class of domains. By a Poincaré type inequality, in the widest sense, we mean a norm inequality in which the variation of a function from its “averag...

Abstract Siphon-shaft spillways can discharge large amounts of water down to the crest level in a narrow reservoir thanks siphonic pressures. However, cavitational pressures siphon-shaft limit operating head these spillways. An enlargement at shaft mouth reduce vacuum and velocities within flows, thereby removing risk cavitation occurring. In this study, four different enlarging profiles with v...

The attitude algorithms can enormously affect the navigation accuracy of SINS and Runge-kutta algorithm, Peano-Baker approximation algorithm rotation vector are common in engineering application. Analysis comparison done to above three this paper, simulated verified under coning motion result show that condition low angle vibration , fourth-order has best comprehensiveperformance.

Abstract Based on the deep-water high temperature and pressure LS25 gas field in Nanhai Reservoir, through design of heterogeneous formations water control experimental schemes, physical simulation experiments different reservoir processes have been completed, focusing evaluating variable density compound technology based continuous packers. In terms adaptability reservoirs, this basis, combine...

freshwater lens on small islands may easily be overexploited or polluted due to overdrafts of fresh water by pumping which causes drawdown of the water table a rise or up-coning of the saltwater interface. present study is concerned with using a three-dimensional finite-difference numerical model to simulate the groundwater flow and transport model to predict the behavior of groundwater system ...

Abstracts A reasonable solution, to deal with oil field water problem, is minimize the amount of associated production using effective completion lengths. This work presents an method optimize wells’ lengths in reservoir a strong aquifer. The suggested technique formulated as constrained optimization problem that defines NPV objective function and set existing field/facility constraints. An alg...