Extensive drilling in the Paraguayan Chaco has failed to find any commercially viable hydrocarbons.
According to interviews with several farmers, the extensive drilling during exploration has dried up local wells or muddied the water.
The music (most of it taped, but not all) was amplified, so that the surrounding city noise — which included extensive drilling and construction work — promptly faded into oblivion.
Cuadrilla is planning more extensive drilling later this month which could involve a controversial technique needed in shale gas extraction called "fracking" - when the rock is fractured using chemicals.
Britain is thought to have substantial shale gas resources but it will require extensive drilling and testing to discover whether the gas in the ground can be profitably produced.
While Dr. Nierenberg was director, Scripps pioneered several research projects, including extensive drilling surveys of the sea floor, which revealed much about the history of the oceans and the dynamics of the earth's crust, and studies of the interactions of the oceans and the atmosphere.
When Interior Secretary Ken Salazar said Tuesday that he would insulate safety and environmental enforcement from the revenue-raising side of the agency that regulates offshore drilling in the United States, he was following in the footsteps of several other countries with extensive drilling operations.
The direct hydrocarbon indicators (DHI) anomalies in the shallow section are confirmed by the extensive drilling and production activities and studied by number of authors as in Sarhan et al. (1996), Barsoum et al. (1998), Wigger et al. (1996), Wigger and Bailey (1997), Samuel et al. (2002) and Hanafy et al. (2014).
Key elements of shale gas production include the extensive drilling campaign, the need for hydraulic fracturing (with its implication on the whole water supply/handling cycle) and the realisation of a continuously growing network of geographically scattered production facilities and flowlines, which accompany gas from wellheads to the final customers.
This may stem from the use of complex neurosurgical techniques intended to minimise retraction over the parenchyma of the brain (that is, extensive bone work, large craniotomies, extensive drilling of the skull base, and opening of the basal cisterns).
In this connection, different procedures at the lateral skull base (e.g., insertion of an electrode during a cochlear implantation or removing a tumor) could be performed without a conventional mastoidectomy or other extensive drilling procedures of the temporal bone.
