REDUCTION OF COST AND TIME CONSUMPTION IN WELL-CONSTRUCTION
Journal Title: UNKNOWN - Year 1998, Vol 10, Issue 1
Abstract
A Contractor usually utilizes the available drilling equipment when constructing just one single well. Drilling cost and time consumption in constructing the well MB-1, using the percussion method, and the well MB-2, using the conventional rotary drilling method, call for a separate analysis in order to justify the investment cost for the acquisition of additional equipment for a single well only. The wells, located in a karst vrtača close to an estavelle near Tomislavgrad, with a diameter of 500 mm and approximately 80 m deep, have been accomplished with a low rate of penetration using the conventional Cable tool and resp. Rotary Drilling Method. In this paper results of analyses for the given circumstances are shown: both the efficiency and cost of the mentioned drilling methods performed by the crews of »Geotehnika d.d.« Zagreb, as well as the justifiability of investments in new equipment are evaluated.
Authors and Affiliations
Mladen Zelenika Božo Soldo
Keywords
Related Articles
- EP ID EP29888
- DOI -
- Views 136
- Downloads 4
UČINAK GEOLOŠKIH STRUKTURA NA HIDROGEOLOŠKE ZNAČAJKE KVARTARNIH NASLAGA U BARANJI
Na hidrogeološke odnose na području Baranje danas utječu pomaci strukturnih jedinica koji su započeli u pliocenu, a posebno su izraženi tijekom kvartara. U litologiji ovog područja dominira jedan ili najviše dva sloja je...
STRESSES AND DEFORMABILITY OF ROCK MASS UPON OPEN PIT EXPLOITATION OF DIMENSION STONE
The appearance of increased stresses and deformability of rock mass in the quarry of Zečevo (exploitation field of Selca – island of Brač) has caused a considerable decrease of usability of mineral raw materials, which p...
FRACTAL ANALYSIS OF FRACTURE SYSTEMS IN UPPER TRIASSIC DOLOMITES IN ŽUMBERAK MOUNTAIN, CROATIA
This paper presents results of fractal analysis of fracture systems in upper Triassic dolomites in Žumberak Mountain, Croatia. Mechanical rock characteristics together with structural and diagenetic processes results wit...
BRODOVI ZA UKAPLJENI PRIRODNI PLIN
Moderni brodovi za prijevoz ukapljenog prirodnog plina su brodovi s dvostrukim dnom čija se klasifikacija vrši prema tipu spremnika. Spremnici su posebno projektirani budući da se u njima skladišti prirodni plin ohlađen...
KATAKOMBE
Preko 80 km podzemnih hodnika i prostorija u kojima su u Rimu sahranjeni kršćani iz prvih stoljeća kršćanstva, predstavljaju jedinstveni autentičan spomenik tog vremena. Njihov nastanak, oblici i tehnologija izrade vrije...