This park was once a national drilling ground, which was taken over by the municipality with a view to erecting upon it a new residential quarter, rendered necessary by the phenomenal growth of the city during the last twenty-five years of the 19th century.
It is evident that accurate knowledge of the character and structure of the rock-formations in petroliferous territories is of the greatest importance in enabling the expert to select favourable sites for drilling operations; hence on well-conducted petroleumproperties it is now customary to note the character and thickness of the strata perforated by the drill, so that a complete section may be prepared from the recorded data.
The drilling of a well is commonly carried out under contract, the producer erecting the derrick and providing the engine and boiler while the drilling contractor finds the tools, and is Drill ing the responsible for accidents or failure to complete the well.
United The present method of drilling has been evolved from States.
The string of drilling tools consists of two Drilling parts separated by an appliance known as the jars.
This consists in the use of an expanding reamer by means of which Drilling in the well may be drilled to a diameter admitting of the Galicia.
So long as he could indulge freely in his favourite pastimes - shipbuilding, ship-sailing, drilling and sham fights - he was quite content that others should rule in his name.
Although petroleum wells in Russia have not the depth of many of those in the United States, the disturbed character of the strata, with consequent liability to caving, and the occurrence of hard concretions, render drilling a lengthy and expensive Drilling in operation.
A little later, about 1868, successful experiments were made with gas as a manufacturing fuel, and in 1872 the gas industry was fairly well established near Titusville by drilling a well and piping the gas for consumption both as fuel and light.
The leading features of Tull's husbandry are his practice of laying the land into narrow ridges of 5 or 6 ft., and upon the middle of these drilling one, two, or three rows, distant from one another about 7 in.