During the sedimentary period of Ordovician Yingshan Formation, carbonate platform Gucheng area in Tarim basin was characterized by a distally steepened ramp. Relative sea-level changes exerted strong influence on shoal facie dolomite reservoirs 3rd Member Formation (the Ying 3 member), sedimented context shallow water environment However, previous studies that lacked high-frequency prevent fur...

Over-exploitation of groundwater in India’s fastest-growing metropolis, Bengaluru, has resulted wells being bored to unprecedented depths a crystalline-rock aquifer. However, key questions about sustainability this extraction process remain unaddressed due the complexity monitoring. Using primary surveys, study looks at spatio-temporal evolution on city scale, finding that catchments with defic...

The Sea of Hebrides Basin and Minch are late Paleozoic–Mesozoic rift basins located to the NW Scottish mainland. were target small-scale petroleum exploration from 1960s early 1990s, with a total three wells drilled within two between 1989 1991. Although no commercially viable discoveries made, numerous shows identified both basins, including gas show Upper Glen 1 well in Lower Jurassic limesto...

Digital oilfield is the main means to increase production and income. Developing ultra-short radius sidetracking horizontal wells in old requires high-performance well trajectory control. In this paper, flexible drill pipe designed by bionics principle, logging tool monitor borehole real time using gamma ray technology. The combination of can realize remaining oil recovery between dense pattern...

T h e proportion of bivalve shells with drill holes i n fossil assemblages is commonly used as a measure of the intensity of predation by drilling gastropods. Previous studies have assumed that drilled and undrilled bivalve shells have equal preseruat ion wotentials. W e tested this assumption by measuring the mechanical strength of drilled and undrilled valves of the Recent bivalve Mulinia lat...

Hundreds of geothermal wells have been drilled in Hungary to exploit Pannonian Basin sandstones for district heating, agriculture, and industrial heating projects. Most these sites suffer from reinjection issues, limiting efficient use this vast resource imposing significant extra costs the required frequent workovers maintenance. To better understand cause issue requires details reservoir rock...

The cuttings transport efficiency of various drilling fluids has been studied in several approaches. This is an important aspect, since hole cleaning often a bottleneck well construction. studies so far have targeted the fluid cuttings’ capability through experiments, simulations or field data. Observed differences due to changes properties and compositions reported but not always fully underst...

Based on the results of expeditionary studies (July 2021), geochemical features thermal waters (natural manifestations and borehole waters) discharging near or directly Sea Okhotsk Pacific coasts central part Iturup Island were considered: Reidovskie, Lososevye, Cape Konakov, Goryachie Klyuchi, Dachnye, water-recreational complex «Vannochki». The springs (with exception Lososevye) belong to sub...

Abstract Fractures play a vital role in reservoir transformation, but the distribution of faults and fractures is difficult to obtain by observing cores, which ultimately limits effective development gas dolomite reservoirs. We propose an integrated method that incorporates thin-section observations, three-dimensional (3D) seismic data, image logs interpret Cambrian Longwangmiao Carbonate Forma...