| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Wellbore primary barrier and related systems | US09264546 | 1999-03-07 | US06209636B1 | 2001-04-03 | John D. Roberts; Jan Drechsler; Tom Salversen; Tom Unsgaard; Eirik Enerstvedt; William A. Blizzard, Jr.; Dale E. Langford; Thurman B. Carter |
| A new wellbore apparatus has been invented which, in certain aspects, has anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, and temperature compensating apparatus for maintaining a desired fluid pressure in the sealing apparatus to prevent it from bursting or deflating. A method for closing off a bore in a well has been invented which, in certain aspects, includes installing wellbore apparatus in the bore, the wellbore apparatus comprising anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus interconnected with the anchor apparatus and selectively inflatable with fluid under pressure to close off the bore to fluid flow therethrough, and the wellbore apparatus upon anchoring in the bore and inflation of the sealing apparatus including a primary barrier in the bore. | ||||||
| 102 | Earth-boring bit with improved cutting structure | US689404 | 1996-08-06 | US5819861A | 1998-10-13 | Danny Eugene Scott; Rudolf Carl Otto Pessier |
| An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface and a heel surface. A plurality of cutting elements inserts are arranged in generally circumferential rows on the cutter. At least one scraper cutting element is secured at least partially to the heel surface of the cutter. The scraper cutting element includes an outermost surface, generally aligned with the gage surface of the cutter, that defines a plow edge or point for shearing engagement with the sidewall of the borehole while redirecting cuttings up the borehole. | ||||||
| 103 | Composite cermet articles and method of making | US576148 | 1995-12-21 | US5697042A | 1997-12-09 | Ted R. Massa; John S. Van Kirk; Edward V. Conley |
| Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions exhibiting at least one property that differs are discussed. Preferably, the cermets further exhibit uniform or controlled wear to impart a self-sharpening character to an article. The multiple-region cermets are particularly useful in wear applications. The cermets are manufactured by juxtaposing and densifying at least two powder blends having different properties (e.g., differential carbide grain size or differential carbide chemistry or differential binder content or differential binder chemistry or any combination of the preceding). Preferably, a first region of the cermet comprises a first ceramic component having a relatively coarse grain size and a prescribed binder content and a second region, juxtaposing or adjoining the first region, comprises a second ceramic component, preferably carbide(s), having a grain size less than the grain size of the first region, a second binder content greater than the binder content of the first region or both. | ||||||
| 104 | Monolithic self sharpening rotary drill bit having tungsten carbide rods cast in steel alloys | US664791 | 1996-06-17 | US5615747A | 1997-04-01 | William B. Vail, III |
| A monolithic long lasting rotary drill bit for drilling a hole into a geological formation having at least one hardened rod which has a length of at least three times its diameter composed of hard material such as tungsten carbide that is cast into a relatively soft steel matrix material to make a rotary drill bit that compensates for wear on the bottom of the drill bit and that also compensates for lateral wear of the drill bit using passive, self-actuating mechanisms, triggered by bit wear to drill relatively constant diameter holes. | ||||||
| 105 | Drilling tool fitted with self-sharpening cutting edges | US30109 | 1993-03-12 | US5301762A | 1994-04-12 | Alain Besson |
| Self-shaping disk-shaped cutting edge of a drilling tool, comprising an outer diamond-impregnated polycrystalline layer (22) applied onto a tungsten carbide layer (24), each cutting edge being mounted on a support (18) which is integral with the body (12) of the drilling tool. The cutting edge and/or its support (18) have areas (26) of least resistance, such as grooves, which are likely to cause successive fractures, thereby forming an acute relief angle (.alpha.) with the rock to be drilled (28). | ||||||
| 106 | Fluid flow control for drag bits | US28990 | 1987-03-23 | US4776411A | 1988-10-11 | Kenneth W. Jones |
| A drag type drilling bit having a plurality of radially disposed raised lands on the bit face is disclosed. A multiplicity of polycrystalline diamond compacts are strategically disposed on the raised lands. At least a pair of lands are joined at the outside periphery of the bit thereby closing the valley formed between the lands, thus forming a plenum for drilling fluid that exits the bit interior through ports or nozzles communicating therewith. Highly turbulent fluid confined in the plenum continually scrubs and scavenges the hole bottom while simultaneously and uniformly cooling and cleaning the PDC cutters during operation of the bit in a borehole. | ||||||
| 107 | Self sharpening drag bit for sub-surface formation drilling | US570860 | 1984-01-16 | US4533004A | 1985-08-06 | Gunes M. Ecer |
| A self-sharpening rotary drag bit assembly comprises:(a) a carrier body adapted to be rotated about a first axis, and having a drilling end,(b) cutters carried by the body to be exposed for cutting at the drilling end of the body, the cutters having thereon layers of hard materials defining cutting edges to engage and cut the drilled formation as the body rotates, the cutters also including reinforcement material supporting said layers to resist deflection thereof under cutting loads,(c) said body and said reinforcement material being characterized as abradable by the formation as the bit drilling end rotates in engagement with the formation. | ||||||
| 108 | Rotary drill bit | US164337 | 1980-06-30 | US4324300A | 1982-04-13 | Clifford K. Logan, Jr. |
| A drill bit including a support member and a plurality of concentrically positioned, hollow, cylindrical cutting members connected to the support member is disclosed. Each of the cutting members includes a beveled edge obliquely extending between the inner and outer surfaces thereof. The beveled edges are aligned so that a tapered cutting surface is defined. | ||||||
| 109 | Drill bits embodying impregnated segments | US914449 | 1978-06-12 | US4234048A | 1980-11-18 | David S. Rowley |
| A diamond drill bit for drilling bore holes in earth formations having a body connectible to a drilling string, and provided with a matrix portion of hard metals in which diamonds are surface set at the outer gage portion and adjacent to the bit axis, the hard metal matrix having preformed grooves in which preformed diamond impregnated segments are inserted, which are a mixture of diamonds and hard metals, and secured to the matrix portion by brazing material. During bit rotation in the bore hole, the segments cut the major portion of the hole, the diamonds being dispersed throughout the mass of each segment for selective release from the segment as the diamonds become damaged and lost, thereby exposing new diamonds in the segment at a controlled rate, and thereby producing continual resharpening of the segments. As a result, the drilling rate of the bit is increased, as well as the length of hole drilled. | ||||||
| 110 | Rotary drill bit | US14637 | 1979-02-23 | US4230194A | 1980-10-28 | Clifford K. Logan, Jr. |
| An improved rotary drill bit comprised of two or more elongated generally cylindrical drill members, the lower ends of which form a cutting face. A plurality of vertically spaced rows of rotatable cutting members are positioned around and between the drill members and are journaled thereto whereby as the lowermost row of the rotatable cutting members and the lower ends of the drill members wear away, the next adjacent row of cutting members is exposed. | ||||||
| 111 | Rotary abrasive drilling bit | US862393 | 1977-12-20 | US4190126A | 1980-02-26 | Ryuichi Kabashima |
| A rotary abrasive drilling bit disclosed herein is of a construction wherein teeth are equipped on the fore part of a bit body attached to a rotary drill pipe, each of said teeth is composed of a plurality of chips which are made of cemented tungstencarbide and the matrix thereof which is soft and inferior in abrasion resistance relative to said cutting elements or chips, each chip is shaped like a thin stick and extends along the cutting direction of said bit body, the matrix surrounds said chips, and in the matrix of each tooth the chips are orderly arranged to leave a desired interspace along the direction of radius as well as the direction of circumference of the bit body. | ||||||
| 112 | Core drill | US3495359D | 1968-10-10 | US3495359A | 1970-02-17 | SMITH LEONARD I; PHAAL CORNELIUS |
| 113 | Drill bit with self-renewing teeth | US37391164 | 1964-06-10 | US3295617A | 1967-01-03 | WILLIS DONALD M |
| 114 | Full hole permanent drill bit | US74886858 | 1958-07-16 | US2966949A | 1961-01-03 | WEPSALA JR GEORGE B |
| 115 | Rotary drill bit | US57930056 | 1956-04-19 | US2838284A | 1958-06-10 | AUSTIN BENJAMIN L |
| 116 | Combination drilling bit | US51513155 | 1955-06-13 | US2819043A | 1958-01-07 | HENDERSON HOMER I |
| 117 | Drill bit | US67407546 | 1946-06-03 | US2493178A | 1950-01-03 | WILLIAMS JR EDWARD B |
| 118 | Core bit | US48582343 | 1943-05-06 | US2371488A | 1945-03-13 | WILLIAMS JR EDWARD B |
| 119 | Laminated disk drill bit | US16470737 | 1937-09-20 | US2203747A | 1940-06-11 | SANDSTONE HARVEY D |
| 120 | Rotary drill bit | US20774127 | 1927-07-22 | US1683502A | 1928-09-04 | TUNNELL HERBERT R |
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