초록 ▼

The shear ram assembly 10 for shearing an oil well tubular T includes a first ram 16 axially moveable along the first axis 66 for moving an upper blade 17, and an opposing second ram 18 axially moveable along the second ram axis 68 for moving a lower blade 19. An upper planar surface 40 of the lower

The shear ram assembly 10 for shearing an oil well tubular T includes a first ram 16 axially moveable along the first axis 66 for moving an upper blade 17, and an opposing second ram 18 axially moveable along the second ram axis 68 for moving a lower blade 19. An upper planar surface 40 of the lower blade passes closely adjacent a lower planar surface 42 of the upper blade as the blades move towards each other to shear the tubular. The sealing system 24 is positioned within a recess 26 in the upper surface of the lower blade, and includes an elastomeric seal 28 for sealing engagement with the lower planar surface of the upper blade and a rigid actuator 30 moveable relative to the lower blade to energize the elastomeric seal.

대표청구항 ▼

The shear ram assembly 10 for shearing an oil well tubular T includes a first ram 16 axially moveable along the first axis 66 for moving an upper blade 17, and an opposing second ram 18 axially moveable along the second ram axis 68 for moving a lower blade 19. An upper planar surface 40 of the lower

The shear ram assembly 10 for shearing an oil well tubular T includes a first ram 16 axially moveable along the first axis 66 for moving an upper blade 17, and an opposing second ram 18 axially moveable along the second ram axis 68 for moving a lower blade 19. An upper planar surface 40 of the lower blade passes closely adjacent a lower planar surface 42 of the upper blade as the blades move towards each other to shear the tubular. The sealing system 24 is positioned within a recess 26 in the upper surface of the lower blade, and includes an elastomeric seal 28 for sealing engagement with the lower planar surface of the upper blade and a rigid actuator 30 moveable relative to the lower blade to energize the elastomeric seal. ell et al.; US-4644502, 19870200, Kawashima; US-4646298, 19870200, Laws et al.; US-4649384, 19870300, Sheafor et al.; US-4653050, 19870300, Vaillancourt; US-4663758, 19870500, Lambarelli et al.; US-4667328, 19870500, Imran; US-4680780, 19870700, Agoston et al.; US-4703436, 19871000, Varshney; US-4707808, 19871100, Heimbigner; US-4719621, 19880100, May; US-4736365, 19880400, Stern; US-4748588, 19880500, Norman et al.; US-4769789, 19880900, Noguchi et al.; US-4782457, 19881100, Cline; US-4785415, 19881100, Karlquist; US-4823363, 19890400, Yoshida; US-4839909, 19890600, Warner; US-4847615, 19890700, McDonald; US-4855613, 19890800, Yamada et al.; US-4860285, 19890800, Miller et al.; US-4864496, 19890900, Triolo et al.; US-4866508, 19890900, Eichelberger et al.; US-4872137, 19891000, Jennings, III; US-4876700, 19891000, Grindahl; US-4881232, 19891100, Sako et al.; US-4884122, 19891100, Eichelberger et al.; US-4890224, 19891200, Fremont; US-4897818, 19900100, Redwine et al.; US-4906987, 19900300, Venaleck et al.; US-4907062, 19900300, Fukushima; US-4912633, 19900300, Schweizer et al.; US-4926382, 19900500, Sakui et al.; US-4937203, 19900600, Eichelberger et al.; US-4943914, 19900700, Kubo; US-4943966, 19900700, Giunta et al.; US-4954854, 19900900, Dhong et al.; US-4955020, 19900900, Stone et al.; US-4961169, 19901000, Matsumura et al.; US-4970724, 19901100, Yung; US-4974048, 19901100, Chakravorty et al.; US-4980765, 19901200, Kudo et al.; US-4984192, 19910100, Flynn; US-4985895, 19910100, Pelkey; US-5001712, 19910300, Splett et al.; US-5003558, 19910300, Gregg; US-5008882, 19910400, Peterson et al.; US-5020020, 19910500, Pomfret et al.; US-5021985, 19910600, Hu et al.; US-5043820, 19910800, Wyles et al.; US-5045725, 19910900, Sasaki et al.; US-5051938, 19910900, Hyduke; US-5055897, 19911000, Canepa et al.; US-5077596, 19911200, Inoue; US-5077737, 19911200, Leger et al.; US-5077738, 19911200, Larsen et al.; US-5103424, 19920400, Wade; US-5111271, 19920500, Hatada et al.; US-5111434, 19920500, Cho; US-5118975, 19920600, Hillis et al.; US-5125006, 19920600, Marinaro; US-5128737, 19920700, van der Have; US-5131015, 19920700, Benjaram et al.; US-5133064, 19920700, Hotta et al.; US-5145645, 19920900, Zakin et al.; US-5159273, 19921000, Wright et al.; US-5161152, 19921100, Czerwiec et al.; US-5168331, 19921200, Yilmaz; US-5179687, 19930100, Hidaka et al.; US-5187779, 19930200, Jeddeloh et al.; US-5204836, 19930400, Reed; US-5206832, 19930400, Yamaguchi et al.; US-5214657, 19930500, Farnworth et al.; US-5218686, 19930600, Thayer; US-5226147, 19930700, Fujishima et al.; US-5227677, 19930700, Furman; US-5243573, 19930900, Makihara et al., 365/185.21; US-5243623, 19930900, Murdock; US-5243703, 19930900, Farmwald et al., 713/400; US-5247522, 19930900, Reiff; US-5249282, 19930900, Segers; US-5252507, 19931000, Hively et al.; US-5254883, 19931000, Horowitz et al.; US-5257235, 19931000, Miyamoto, 365/230.03; US-5261077, 19931100, Duval et al.; US-5262986, 19931100, Yamauchi, 365/185.08; US-5265216, 19931100, Murphy et al.; US-5267200, 19931100, Tobita; US-5268639, 19931200, Gasbarro et al.; US-5278967, 19940100, Curran; US-5297080, 19940300, Yamamoto, 365/190; US-5297092, 19940300, Johnson; US-5301152, 19940400, Iwashita; US-5311083, 19940500, Wanlass; US-5317540, 19940500, Furuyama; US-5325329, 19940600, Inoue et al.; US-5329174, 19940700, Chiang; US-5329559, 19940700, Wong et al.; US-5359722, 19941000, Chan et al.; US-5371420, 19941200, Nakao; US-5379258, 19950100, Murakami et al.; US-5402388, 19950300, Wojcicki et al.; US-5420824, 19950500, Kajimoto et al.; US-5434996, 19950700, Bell; US-5465223, 19951100, Nishimura; US-5498886, 19960300, Hsu et al.; US-5561630, 19961000, Katoh et al.; US-5699317, 19971200, Sartore et al.; US-5721862, 19980200, Sartore et al.; US-5887272, 19990300, Sartore et al.; US-6483755, 20021100, Leung et al., 365/189.05