In this work, the Parameters Estimation in petroleum wells is presented; it is based on Intelligent Systems (neural networks and fuzzy logic). For validating the results, the estimation is applied in wells that need artificial lift using well heading data (gas and production pressure). Key-Words: neo-fuzzy models, oil system production, artificial gas lift wells, parameters estimation.

The fundamental intrinsic radiative process associated with excitons in semiconductor multiple quantum wells is discussed within the context of exciton polaritons. Multiple quantum wells in which each well is randomly displaced from its ideal periodic position are discussed in order to investigate the effect of disorder on excitonic radiative widths. The coherent transpori of excitons in multip...

BACKGROUND A groundwater-associated outbreak affected approximately 1,450 residents and visitors of South Bass Island, Ohio, between July and September 2004. OBJECTIVES To examine the microbiological quality of groundwater wells located on South Bass Island, we sampled 16 wells that provide potable water to public water systems 15-21 September 2004. METHODS We tested groundwater wells for f...

BACKGROUND There is a need to identify and evaluate an effective mitigation program for arsenic exposure from drinking water in Bangladesh. OBJECTIVE We evaluated the effectiveness of a multifaceted mitigation program to reduce As exposure among 11,746 individuals in a prospective cohort study initiated in 2000 in Araihazar, Bangladesh, by interviewing participants and measuring changes in ur...

BACKGROUND Millions of households throughout Bangladesh have been exposed to high levels of arsenic (As) causing various deadly diseases by drinking groundwater from shallow tubewells for the past 30 years. Well testing has been the most effective form of mitigation because it has induced massive switching from tubewells that are high (>50 µg/L) in As to neighboring wells that are low in As. A ...

Mahu oilfield is a typical tight gravel oil reservoir. At present, long-stage multi-cluster fracturing widely used for reservoir stimulation, and multiple-clusters treatment realized through cluster perforation. Field monitoring indicates that not all perforation clusters produce hydraulic fractures in the process, each of section will expand unevenly. The unbalanced expansion multiple seriousl...

One of the modern approaches for effective development small deposits is construction and operation wells with a complex architecture: horizontal (HW), sidetracks (BS, BGS), multilateral (MLW). Sidetracking makes it possible to reanimate an old well that in emergency state or inactivity technological reasons, by opening layers have not been previously developed, bypassing contamination zones, w...

This paper a numerical simulation of methods intensification flow to the well by using various approaches. To simulate hydrochloric acid impact, an approach was applied based on changing productivity factor, as that consisted chemical reaction in hydrodynamic model. The criteria for qualitative forecasting technological development indicators actual data one wells analogous field object. As res...

This is a summary of state of the art horizontal well technology and a review of the economic benefits of horizontal wells. The paper describes various reservoir applications of horizontal wells from primary recovery to EOR applications. The paper includes field examples of different applications. . Although horizontal wells have been drilled as early as 1927, the major thrust of drilling horiz...