Understanding and quantification of wellbore skin improves our ability to accurately measure or estimate hydrologic parameters with tests at wells such as pumping tests, flowmeter tests, and slug tests. This paper presents observations and results from a series of field, laboratory, and modeling tests which, together, explain the source of wellbore skin at wells at a research wellfield and whic...

this study at first level focused on definitions and descriptions of  some landfills and landfills sites all around the world and  survey on how important they are for regional governments and responsible in duty  as a very important responsibility for locals and their health. at the second level we had a look on heavy metals concentration which are by many definitions as follows: lead, nickel,...

In this study, where the suitability of groundwater for irrigation in terms soil and plants was evaluated, samples were taken from 11 drilling wells used some regions Kahramanmaraş province. Chemical parameter values such as pH, EC, RSC, SAR, TDS, TH, Na%, PI, SSP, MR, KR, PS determined assessment water quality. According to quality criteria, all except two medium salt/low sodium (C2S1) class E...

CONTEXT Pulmonary computed tomography angiography (CTA) and the Wells criteria both have interobserver variability in the assessment of pulmonary embolism (PE). Quantitative D-dimer assay findings have been shown to have a high negative predictive value in patients with low pretest probability of PE. OBJECTIVE Evaluate roles for clinical probability and CTA in Emergency Department (ED) patien...

Eosinophilic cellulitis/Wells' syndrome is a rare dermatosis with erythematous, urticarial plaques that become more indurated and eventually have grey blue discoloration. The histopathology is distinctive, with a diffuse infiltrate composed predominantly of eosinophils but admixed with lymphocytes, histicytes and occasionally multinucleated histiocytes. There is dermal edema with so called "fla...

The flexible drilling method of ultra-short radius sidetrack horizontal wells is an effective to utilize the remaining oil at top thick reservoirs. By analyzing current status SZ oilfield well network, development stage and sand body characteristics, combined with characteristics lateral technology, areas formations suitable for tapping are identified, criteria selecting established, which a gu...

Recent measurements of methane emissions from abandoned oil/gas wells show that these wells can be a substantial source of methane to the atmosphere, particularly from a small proportion of high-emitting wells. However, identifying high emitters remains a challenge. We couple 163 well measurements of methane flow rates; ethane, propane, and n-butane concentrations; isotopes of methane; and nobl...

Relief wells are used extensively to relieve excess hydrostatic pressure in pervious foundation strata overlain by impervious top strata, conditions which often exist landward of levees and downstream of dams and hydraulic structures. Placing well outlets in below-surface trenches or collector pipes helps dry up seepage areas downstream of levees and dams. Relief wells are often used in combina...

A 31-year-old Caucasian female presented to the emergency department (ED) with chief complaint of a gradually progressive right extremity rash for past two days. The patient described a warm, red area over the dorsum of her forearm. The lesion began as a small spot that overnight came to involve most of the arm. The patient, who had similar episodes in the past on her back, stomach, and legs, h...

coastal areas usually involves in several kinds of water use, such as agricultural, industrial, and drinking, which are needed to be considered as important in water management systems. there is a need to study the sustainable water resources management in different terms. a combined methodology, which considers the human activities, as well as environmental problems according to some criteria,...