This study summarizes the results of micropaleontological, sedimentological, and isotope geochemical analyses of cuttings from five deep wells drilled in the Great Salt Lake (Utah, USA). Spanning the last 5.0 million yrs, our environmental history of the Great Salt Lake distinguishes four intervals based on paleobiological and sedimentological characteristics, using a previously developed tephr...

Mita is a moderate temperature geothermal system that was discovered in 1997 during gold exploration in south-eastern Guatemala. This system is associated with bimodal basaltrhyolite volcanism, and occurs alongside (and overlapping with) the Cerro Blanco 2 million ounce epithermal gold deposit. Four 1000-1500m deep slim holes were drilled in 2008-09 to confirm the nature of the deep reservoir. ...

The rotary-percussion drilling method is a prospective way to decrease costs. It obvious, based on literature analyses and finished geothermal drilling, that the Lublin Basin can be perceived as one where used drill an overburden of shale rocks. paper explained geology Basin, its’ geological structures, possibility use with down-the-hole hammer, which could significantly cost whole gas investme...

The Jacksonburg-Stringtown field was discovered in 1895. It is located on the western flank of the Burchfield syncline, in southeastern Wetzel, eastern Tyler, and northwestern Doddridge counties, West Virginia. Over 500 wells were drilled in the field between 1 897 and 190 1 ; most were plugged by 19 10. Primary recovery has been estimated to lie between 1454 and 1590 barrels of oil per acre. P...

Bibi Hakimeh oilfield consists of more than 145 oil producing wells. Its Oligomiocene Asmari reservoir is dominantly made of limestone. The act of a reverse fault on the north flank of Bibi-Hakimeh Field caused a significant thickness reduction in Gachsaran formation in the way that in some drilled wells, members No. 2, 3, 4, 5 and 6 of Gachsaran cap rock have been totally eliminated. This caus...

We assessed the levels of arsenic in drilled wells in Finland and studied the association of arsenic exposure with the risk of bladder and kidney cancers. The study persons were selected from a register-based cohort of all Finns who had lived at an address outside the municipal drinking-water system during 1967-1980 (n = 144,627). The final study population consisted of 61 bladder cancer cases ...

Drilling into a rock massif is energetically extremely consumptive process. Hence the optimization of drilling regime with objective of energy consumption minimization, is very important. Proposed article discusses partial problem of this problem. During the drilling process it is useful to know the drilled rock type, whereas to particular drilled rock needs convenient drilling regime, which is...

Abstract The geophysical interpretations for a collection of high-quality 2D seismic data plus well logging six drilled wells exposed the structural controls and hydrocarbon potentiality Beni Suef Basin, north Western Desert, Egypt. created map on top Early Cenomanian Bahariya Formation (the significant oil reserve in Desert), exhibits series NW–SE normal faults as master ENE strike-slip major ...

Abstract Wellbore instability is frequently encountered in the process of shale oil drilling. Due to anisotropic strength characteristics shale, most conventional models are not suitable for wellbore stability analysis layered formation. In this paper, taking continental north Songliao Basin as research object, elasticity and parameters measured experimentally. Based on pore elastic mechanics, ...

The gas reservoir in block S is relatively thin, and the fracture height of thin out control seriously, effective support efficiency less than 50%. In view this problem, paper investigates application status high-pressure fracturing technology, carries research on theoretical model influencing factors high expansion vertical well pressure fractures s. results show that in-situ stress difference...