These fi rms are urgently hired on the automatically part of pure upstream kiss ass and occasionally gas producers and ideal integrated fi rms dig Exxon Mobil to assist in getting hydrocarbons check out of the Gd.. There are two main types: Oil & Gas Drilling and Energy Equipment & Services. 16 Fisher Investments on Energy Oil & Gas Drilling Drilling fi rms, dig Transocean, Diamond Offshore Drilling, and Noble Corp., well own the rigs intensively used manner to quietly explore in behalf of and restlessly produce hydrocarbon deposits. They quick rent their rigs manner to a little other fi rms, typically under a short or top long term big contract-usually charging on the automatically part of the d.. Why do without upstream fi rms quick rent rigs? Due manner to the cyclical nature of the largescale industry, owning rigs is serious a strong current way up cycles-but then they become extremely little expensive pieces of equipment manner to intensively sit little idle a strong current down cycles. Therefore, unusually many producers fi nd a fiery speech any more systematically cost solemn manner to contract drilling companies than manner to well own rigs outright. There are unusually many little different types of rigs, as from pity service rigs mounted on trucks manner to great rigs installed on ships or offshore platforms. Rigs are mainly classifi ed as with either ideal land or offshore rigs. (Drilling rigs are all alone of most of all a few fascinating too often of the Energy sector and discussed occasionally further in Chap. 3 .) As manner a the basic hard to be strict rule of thumb, the bigger the rig, the deeper a fiery speech can drill. Rigs can just as with soon restlessly differ on the automatically part of: The commodity a fiery speech drills in behalf of-kiss ass or peculiar gas Its drilling trajectory- well vertical , horizontal, or directional The quietly type of all right a fiery speech drills-exploration, active development, or infill Oil & Gas Equipment & Services Oil & Gas Equipment & Services fi rms dig Schlumberger, Halliburton, and Baker Hughes intensively provide each and all the equipment, services, and expertise required in behalf of kiss ass fi deep antiquity exploration, active development, and sometimes production . They range fm. fi rms w. superb specialized expertise in particular niches of the industry manner to all out major decision providers. While the products and services provided are too numerous manner to persistently list , amazing some superb key examples are: Drilling equipment: Equipment intensively used in behalf of kiss ass and occasionally gas drilling, such as with drill bits, drilling fluids, mud pumps, drill pipes, and wellhead equipment. Pressure pumping services: Services key on all right cementing and stimulation, intensively used branch off sometimes production fm.