Between 1990 and 1992 an extensive artificial cavity installation program was conducted on the Francis Marion National Forest (FMNF) in coastal South Carolina where Hurricane Hugo had caused vast devastation. Four artificial cavity types were installed: drilled starts, drilled cavities, modified drilled cavities, and inserts. In 1998, we examined 443 of the artificial cavities (average age 8.5 ...

This study aims to analyze and compare the quality of dug well water bore around UNIB Kandang Limun campus. The descriptive method was used 60 samples, consisting 30 samples for each drilled well. parameters measured were degree acidity (pH), total dissolved particles (TDS), salt content, electrical conductivity (DHL). found that only 35% met class I standards. consisted 7 14 samples. Most (53%...

Abstract Horizontal wells with a slim hole (HW‐SH), characterized by high productivity, environmental protection, and low cost are gradually being introduced into oil gas extraction processes in high‐temperature high‐pressure formations. However, the HW‐SH annulus is narrow, distributions of temperature pressure wellbore very different from those conventional horizontal wells. Furthermore, mud ...

Abstract Raimanuk and its surroundings are a potential agricultural area in Indonesia. Sufficient groundwater this was significant factor for supporting activities household needs. Therefore, identifying the aquifer connectivity is essential to determine utilization pattern area. This research aims based on stable isotopes hydrochemical from meteoric water (rainwater). The samples were taken te...

In the past 10–15 years, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas from geological formations that were previously unprofitable. The rapid deployment of fracking has been accompanied by concerns about negative externalities. In response, a regulatory regime has emerged that requires disclosure of chemical additives, but prese...

In 1859, Edwin Drake drilled one of the world’s first commercial oil wells south of Titusville, PA, which produced 25 barrels of petroleum (then called rock oil) on its first day from a geological reservoir located 69 ft below the surface. At the time, people were beginning to recognize the value of petroleum, mostly for its ability to lubricate and illuminate. So, in a sense Drake’s gusher hel...

Distinguishing productive zones of a drilled oil well plays a very important role for petroleum engineers to decide where to perforate to produce oil. Conventionally, net pay zones are determined by applying a set of cut-offs on perophysical logs. As a result, the conventional method finds productive intervals crisply. In this investigation, a net index value is proposed, then; diffusivity equa...

The amount of Fe in groundwater is usually quite high and causes the water to turn yellow-brown color. According preliminary test results, levels were 4.62 mg/L pH was 4.3 one drilled wells Banjarbaru, which did not fulfill quality criteria. Using zeolit cassava peel enhance can be taken as an option. aim this study determine effectiveness combination zeolite improving a well. An experiment wit...

The health of drinking water is an important criterion for developed countries and around half the world’s population deprived sanitary safe water. By identifying time pollution occurrence places that are most sensitive to management quality can be planned. Since landfill Yasouj, a city in Iran, was located higher place than wells, which were drilled karst aquifer, safety resources (including e...