专利检索_ .岩心的涂层冻结及加固专利检索_ .岩心的涂层冻结及加固专利检索查询

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
241	Cutter knife for earth coring	US3754608D	1971-11-22	US3754608A	1973-08-28	BAILLE S; ATKINS S
A knife component for push-pull type earth coring includes a central shaft and a surrounding shroud or shell held concentrically to the shaft by a plurality of cutter blades or webs. The shroud or shell tapers from the front to the back to compress the cut core slightly and the rear side of the cutter blades are provided with offset teeth to thrustably engage the core during the core pushing or extruding phase.
242	Core drilling with air containing polymer in oil	US3718195D	1971-10-26	US3718195A	1973-02-27	CLEMENTS F
POLYISOBUTYLENE IN OIL IS ADDED TO A GAS CIRCULATED THROUGH A WELL DURING CORE-DRILLING OPERATIONS. THEY POLYMER PREVENTS JERKING OF THE CORE BARREL AND THE RESULTING CORE BREAKAGE AND LOSS, WHICH OCCURS WHEN OIL WITHOUT THE POLYMER IS USED.
243	Method and apparatus for sampling	US3521715D	1968-10-23	US3521715A	1970-07-28	KRUTEIN MANFRED G

244	Apparatus and material for core orientation	US42106264	1964-12-24	US3291226A	1966-12-13	WINKEL DAVID E

245	Apparatus for the drilling of and the protection of drill cores in deep-welldrilling operations	US14891261	1961-10-31	US3207240A	1965-09-21	HELMUT HUGEL

246	sealing porous sukfaces	US3123158D		US3123158A	1964-03-03

247	Coring fluid	US1369560	1960-03-09	US3112799A	1963-12-03	GALLUS JULIUS P

248	Device for subsoil testing and taking of specimens	US34725753	1953-04-07	US2779195A	1957-01-29	KARL SIMON

249	otway	US2734719D		US2734719A	1956-02-14

250	Drill for forming solidified core piles	US33672753	1953-02-13	US2682388A	1954-06-29	ODIE COLQUITT

251	Coring device	US69216546	1946-08-22	US2541785A	1951-02-13	SMITH DONALD M

252	Method of determining the fluid contents of underground formation samples	US55810244	1944-10-10	US2445494A	1948-07-20	REDMOND JOHN F

253	Pressure core drilling apparatus	US44239942	1942-05-11	US2381845A	1945-08-07	STOKES JOHN C

254	Core drilling	US34873640	1940-07-31	US2364088A	1944-12-05	MILLER HAROLD C; BERWALD WILLIAM B; TALIAFERRO JR DAVID BEN

255	Pressure core barrel	US41925741	1941-11-15	US2343805A	1944-03-07	SEWELL BENJAMIN W

256	Method of drilling wells	US9254136	1936-07-25	US2341574A	1944-02-15	REED HOWARD L

257	Expansion chamber for pressure core barrels	US31826640	1940-02-10	US2287909A	1942-06-30	SEWELL BENJAMIN W

258	Pressube core barrel	US21951D		USRE21951E	1941-11-18

259	Pressure coring device	US24221138	1938-11-25	US2216962A	1940-10-08	SEWELL BENJAMIN W

260	Pressure core barrel	US19452238	1938-03-08	US2213595A	1940-09-03	SALNIKOV IVAN S

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