But the work went forward, through good report and through evil report, particularly the latter, until August 26th, 1859, when, at the depth of seventy feet, the drill suddenly sank into a cavity in the rock, when there was immediate evidence of the presence of oil in large quantities. It was like the cry of 'Land ho!' amid the weary, disheartened mariners that accompanied Columbus to the Western World. The goal had been reached at last. A pathway had been opened up through the rocks, leading, not to universal empire, but to realms of wealth hitherto unknown. Providence had literally forced upon men's attention that which should fill many dwellings with light, and many hearts with gladness.
Upon withdrawing the drill from the well, the oil and water rose nearly to the surface. The question was now to be tested whether the petroleum would present itself in sufficient quantities to justify further proceedings, or whether it was, like many another dream, to vanish in darkness, or dissolve in tears. The well was tubed, and by a common hand pump yielded ten barrels per day. By means of a more powerful pump, worked by a small engine, this quantity was increased to forty barrels per day. The supply was uninterrupted, the engine working day and night, and the question was considered settled. This oil well immediately became the centre of attraction. It was visited by hundreds and thousands, all eager to see for themselves, and test by actual experiment, the wondrous stories that had been related concerning its enormous yield, by counting the seconds that elapsed during the yield of a single gallon.
The fortune of the valley of Oil Creek was now settled, and the prices of land throughout its whole extent immediately became fabulous. Sometimes entire farms were sold, but generally they were leased in very small lots. In some cases the operator was required to give one half and even five eighths of the product, besides a handsome bonus, to the proprietor of the soil. The work now commenced in earnest. A tide of speculators began to set in toward the oil region, that would have overpowered that of California or Australia in their palmiest days.
The excitement did not stop at the valley of Oil Creek. It extended down the Alleghany to Franklin, and up the valley of French Creek, which enters the Alleghany seven miles below the mouth of Oil Creek. Wells were sunk at all these points, and many of them yielded from three to forty barrels per day. In the course of the summer succeeding the first successful experiment on Oil Creek, there were not less than two hundred wells in different stages of progress in the town of Franklin alone. Wells were being bored in gardens, in dooryards, and even in some cases in the bottoms of wells from which water had been procured for household purposes. So numerous were the tall 'derricks,' that a profane riverman made the remark that the people of Franklin must be remarkably pious, as almost every man seemed to be building a meeting house with a tall steeple near his dwelling. At one time there were in Franklin fifteen productive wells, yielding a daily aggregate of one hundred and forty barrels. Among these were what was known as 'the celebrated Evans well.' This was, in some respects, the most remarkable well in all the region. It was sunk by its proprietor in the bottom of the well that had long been used for household purposes. An humble house and lot constituted his entire worldly possessions. The work in the well was performed entirely by his own family. Being a blacksmith, he constructed his own boring implements, and was dependent on no outside assistance. Patiently and assiduously did the blacksmith and his two sons toil on, as they had seldom toiled before, the former guiding the drill, and the latter applying the power by hand to the simple machinery. At the depth of only forty feet in the rock they struck a crevice that promised to pour them out rivers of oil. In attempting to enlarge this, the drill broke, the fragment remaining in the cavity, and defying every effort used for its removal. The well was then tubed, and a hand pump inserted, when it was found to yield at the rate of ten or fifteen barrels per day. Speculation soon began to run wild, and the fortunate owner of this well, among other propositions, received an offer of fifty thousand dollars for his well. To all these tempting offers he persistently returned the same reply—that he had bored that well for his own use, and that if others wished a well, they could do as he had done.
Oil was generally obtained in the valley around Franklin at the depth of about three hundred feet from the surface, for pumping wells; in the valley of Oil Creek the same stratum was reached at about half that depth. In all these wells, whether successful as oil wells or not, a strong body of salt water was obtained, that added greatly to the facility of separating the oil by its increased gravity. Hitherto the business had been pursued with advantage and profit to those who were engaged. The demand was steady and prices remunerative, and visions of untold wealth were looming up before the minds of thousands. Prospecting was extending far and near. Every stream and ravine that deflected toward the Alleghany or Oil Creek was leased, and in very many unpropitious localities operations were commenced.
But a change now took place in the development of oil proceedings that wrought ruin in the hopes of many an ardent operator. In the Oil Creek region, some of the smaller wells having been exhausted, resort was had to deeper boring. One hopeful theorist imagined that if the desirable fluid came from a very great depth, it might be good policy to seek it in a stratum still nearer its rocky home. So down he penetrated, regardless of the 'fine show' of oil that presented itself by the way, until at the depth of five hundred feet in the rock, a vein of mingled gas and oil was reached that literally forced the boring implements from the well. This sudden exodus of the implements was followed by a steady stream of petroleum that rose to the height of sixty or seventy feet above the surface, and was occasionally accompanied by a roaring noise like the Geysers of Iceland.
Here was a new feature in oil operations. The idea of flowing wells for the production of petroleum, once inaugurated, was seized upon with avidity. There was not only a spontaneous yield, but a yield in enormous quantities. And so a pumping well was voted a slow institution, and all parties on Oil Creek renewed the operation of boring, and, at about the depth of the first flowing well, obtained almost uniformly like success.
These flowing wells were almost as difficult to govern and regulate as was Pegasus of old. They 'played fantastic tricks' when least expected, throwing the oil over the workmen, and in one case, when the vein of petroleum was suddenly opened, setting fire to the machinery, and destroying the lives of those in the vicinity. The enormous yield of these wells had the effect of bringing down the price of petroleum to so low a figure that pumping wells were at once closed. They could not be worked with profit. Hence almost the entire oil business has, for the present at least, been confined to the valley of Oil Creek. The yield from the flowing wells varies from fifty to two thousand barrels per day. This, as may readily be supposed, involves the loss by wastage of immense quantities of oil, that is scattered on the ground and runs into the creek. So great is this waste at times, that the oil is gathered in quantities on the surface of the Alleghany for a distance of eight or ten miles below the mouth of Oil Creek, in the eddies, and along the still water of the shore, and is distinctly perceptible at Pittsburg, a distance of one hundred and forty miles from the wells.
Notwithstanding these wells are confined to a very narrow valley, and in many instances in very close proximity, it is very rare that they interfere with each other. In fact cases are known where two wells have been bored within forty feet of each other, with the discovery of oil at different depths, and even of different qualities, as regards color and gravity. In some instances the well has all the characteristics of an intermittent spring. One in particular may be specified for the regularity of its operations. It would remain quiescent for about fifteen minutes, when there would be heard the sound as of fearful agitation far down in its depths. This rumbling and strife would then appear to approach the surface for a few moments, when the petroleum would rush forth from the orifice, mingled with gas and foam, almost with the fury of a round shot from a rifled cannon. This furious flow would continue for fifteen or twenty minutes, when it would suddenly subside, and all would be peace again. This alternate rest and motion would continue with great regularity day and night, yielding perhaps one hundred and fifty barrels per day. In other instances, there are interruptions of days and even weeks, when the flow will be continued as before. In others still, the yield is steady and uninterrupted, yielding with unvarying regularity from week to week.
The oil region of Venango County, as far as has been explored, is confined to the creek and river bottoms. In connection with wells that have been opened, there is a superincumbent stratum of earth, varying from ten to sixty feet in thickness: underlying this is a stratum of argillaceous shale, generally about one hundred and eighty feet in thickness, and then a stratum of white sandstone. Sometimes this sandstone is intermingled with red, presenting a ruddy appearance as the sand is withdrawn from the well in the process of boring.