| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | 一种采用火药捞钻头的装置及其使用方法 | CN201610444333.2 | 2016-06-16 | CN106014318A | 2016-10-12 | 杜兴学; 高杰; 张书良 |
| 本发明公开了一种采用火药捞钻头的装置及其使用方法，一种采用火药捞钻头的装置，包括内装火药的罐体，所述罐体通过第一导线与焊钳的夹持部连接，所述罐体通过第二导线与电焊机的地线连接；所述电焊机的控制开关通过第三导线连接到所述焊钳的钳体上，该申请可以将在地层中将深埋的钻头快速地捞起，防止捞钻头占用时间长影响施工进度，提高生产效率。 | ||||||
| 2 | Downhole steering apparatus | EP84115863.7 | 1984-12-19 | EP0185111A1 | 1986-06-25 | Traver, Jack L.; Palmer, Dale C.; Hughes, Richard |
The downhole steering apparatus is used for downhole logging tools, in particular to allow the tool to avoid obstacles or to be freed when stuck. It includes a device for deviating from center and ultrasonic and low frequency vibrators. It may be supplemented by a special dislodging sub that operates on explosive power. A microprocessor unit in the apparatus monitors its position, analyses problem situations and controls the functions. The apparatus comprises
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| 3 | STRING SHOT BACK-OFF TOOL WITH PRESSURE-BALANCED EXPLOSIVES | EP15904283.7 | 2015-09-18 | EP3350406A1 | 2018-07-25 | Bell, William, T.; Rairigh, James, G. |
| A “back-off” tool comprises a magazine cylinder having one distal end of a long mast rod secured to the lower end-face of a magazine cylinder. The magazine cylinder is attached to an electrically detonated firing head. A first plurality of blind hole cavities penetrate the magazine cylinder end-face around the mast rod junction. A second plurality of elongated detonation cord ends are inserted into high temperature grease filled magazine cylinder cavities. From the cavities, the detonation cord lengths are bound to the rod surface along the rod length by non-metallic cord. The tool assembly is secured to the end of a wireline or tubing string for downhole placement and detonation. | ||||||
| 4 | String Shot Back-Off Tool With Pressure-Balanced Explosives | US15760171 | 2015-09-18 | US20180258723A1 | 2018-09-13 | William T. Bell; James G. Rairigh |
| A “back-off” tool comprises a magazine cylinder having one distal end of a long mast rod secured to the lower end-face of a magazine cylinder. The magazine cylinder is attached to an electrically detonated firing head. A first plurality of blind hole cavities penetrate the magazine cylinder end-face around the mast rod junction. A second plurality of elongated detonation cord ends are inserted into high temperature grease filled magazine cylinder cavities. From the cavities, the detonation cord lengths are bound to the rod surface along the rod length by non-metallic cord. The tool assembly is secured to the end of a wireline or tubing string for downhole placement and detonation. | ||||||
| 5 | BACKOFF SUB AND METHOD FOR REMOTELY BACKING OFF A TARGET JOINT | US13036785 | 2011-02-28 | US20110146990A1 | 2011-06-23 | CARL W. STOESZ; TERRY R. BUSSEAR |
| A backoff sub includes a housing; and a backoff facilitator at least partially within the housing. Capable of adding energy to a system within which the sub is disposable. A method for managing a stuck string in a wellbore is also included. | ||||||
| 6 | BACKOFF SUB AND METHOD FOR REMOTELY BACKING OFF A TARGET JOINT | US12104185 | 2008-04-16 | US20090260822A1 | 2009-10-22 | CARL W. STOESZ; TERRY R. BUSSEAR |
| A backoff sub includes a housing; and a backoff facilitator at least partially within the housing and capable of adding energy to a system within which the sub is disposable and method. | ||||||
| 7 | Downhole mobility and propulsion apparatus | US719892 | 1985-04-03 | US4624306A | 1986-11-25 | Jack J. Traver; C. Dale Palmer; Richard Hughes |
| An apparatus which comprises an upper sub for connectable engagement with the wire line, a microprocessor component for directing the various functions of the overall apparatus down hole; a motor section having a plurality of thrust directional motors and ball screw assembly for movement of steering gates; a motor driven impeller means for providing thrust and flow through a portion of the apparatus and in combination with the flow gates providing steering in a certain direction; an electrical transducer portion for providing ultrasonic vibrations around the circumference of the apparatus in discongealing molecular substrate adjacent the apparatus; a mechanical vibration coil assembly means on the lower end of the apparatus for discongealing larger areas of congealing in a substrate around the apparatus, and a lower sub for connectably engaging the electrical logging unit to be steered down hole. The apparatus may also comprise on either end a thrust explosive sub for explosively dislodging the apparatus in the event of lodging occuring down hole. | ||||||
| 8 | Pipe joint separation | US229033 | 1981-01-28 | US4396065A | 1983-08-02 | John R. McKenney |
| A shock wave, e.g., from a short time electric arc, is used instead of any explosives to loosen a screw connection between two pipes. | ||||||
| 9 | Retrievable float valve assembly | US201580 | 1980-10-28 | US4393940A | 1983-07-19 | Larry V. Cooper; Michael W. Sloane, Sr. |
| A retrievable float valve hanger tool assembly provides a hanger sub having a first upper connection for attaching the hanger sub, for example, threadably, to a drill string or work string. A second lower connection means on the sub provides both external and internal threaded (for example) connections, which allow the sub to be connected on its inner threads to a float valve canister and at its external threads to an extension which forms a protective housing about the float valve and its valve canister during operation. The device places the float valve below the joint of the sub and the extension so that an explosive charge can be detonated at the joint allowing easy removal of the float valve from the drill string in the event that the drill pipe becomes stuck. A continuous bore through the assembly allows fluid circulation through the tool in the work string and also allows the explosive charge to be lowered by wireline, for example, to the tool assembly at the appropriate joint. The explosive charge, detonated above the float valve aids in breaking the connection between the hanger sub and extension so that the float valve canister can be removed when the hanger sub and extension are disconnected. | ||||||
| 10 | Back-off tool assembly | US3491830D | 1968-04-05 | US3491830A | 1970-01-27 | SWEETMAN WILLIAM G |
| 11 | Detonating device | US8536361 | 1961-01-27 | US3157119A | 1964-11-17 | PORTER LAYTON F |
| 12 | Droppable back-off tool | US54197555 | 1955-10-21 | US2911909A | 1959-11-10 | FUCHS BENJAMIN H |
| 13 | Method of recovering drill pipe from wells | US33196353 | 1953-01-19 | US2905437A | 1959-09-22 | BELL LEO A; HELM EDWIN H |
| 14 | Jet-type drilling jar | US32113652 | 1952-11-18 | US2673070A | 1954-03-23 | CRAKE WILFRED S |
| 15 | Sealable foot valve | US32019828 | 1928-11-17 | US1810420A | 1931-06-16 | GETTY FRED I |
| 16 | Back-pressure valve for oil and artesian wells | US59448022 | 1922-10-14 | US1499702A | 1924-07-01 | SMITH ABNER L |
| 17 | DOWNHOLE TOOLS HAVING CONTROLLED DEGRADATION AND METHOD | US15599101 | 2017-05-18 | US20180283141A1 | 2018-10-04 | Zhihui Zhang; Zhiyue Xu; Goang-Ding Shyu; Juan Carlos Flores Perez; James Doane; Yingqing Xu |
| A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a pre-set time period, the pre-set timer closes the electrical circuit and the igniter is activated. | ||||||
| 18 | Downhole Impact Apparatus | US15979262 | 2018-05-14 | US20180258724A1 | 2018-09-13 | James P. Massey; Thomas Wilson; Edward Saville |
| Apparatus and methods for creating a downhole impact. The apparatus may be an impact tool operable to be coupled between portions of a tool string conveyable within a wellbore extending into a subterranean formation. The impact tool may include a housing, a chamber within the housing, a piston slidably disposed within the chamber and dividing the chamber into a first chamber volume and a second chamber volume, and a shaft connected with the piston and axially movable with respect to the housing. The first chamber volume may be open to a space external to the housing and the second chamber volume may be fluidly isolated from the space external to the housing. The piston may be maintained in a predetermined position within the chamber to maintain pressure within the second chamber volume appreciably lower than pressure within the first chamber volume while the impact tool is conveyed along the wellbore. | ||||||
| 19 | High Temperature, High Pressure Back-Off Shot Tool | US15310254 | 2014-07-10 | US20170175474A1 | 2017-06-22 | Marcus Kevin Marcantel; John Steven Kile |
| A back-off shot tool system includes a high-pressure resistant charge housing at least partially containing an explosive material. A booster charge is placed adjacent the explosive material to activate the explosive material upon actuation. The high-pressure resistant charge housing is formed from a material that is the material of the high-pressure resistant charge housing is frangible so that it will to withstand high temperatures and pressures, such as a ceramic. In addition, fragment into small pieces that can be process or extracted from the well with fluid that is extracted from the region in which the back-off shot tool is deployed. | ||||||
| 20 | Propellant back off tool | US14893558 | 2014-07-14 | US09637990B2 | 2017-05-02 | Jim Taylor Hill; Wesley N. Ludwig |
| An apparatus includes a propellant chamber, an expansion chamber, an exit chamber comprising a port providing fluid communication outside the apparatus, and a longitudinal acceleration chamber. The longitudinal acceleration chamber includes a first end in fluid communication with the propellant chamber, a second end in fluid communication with the expansion chamber, and a longitudinal axis between the first end and the second end. An acceleration mass is slidably contained in the acceleration chamber. The acceleration chamber includes a propellant side between the propellant chamber and the acceleration mass, and a target side between the acceleration mass and the expansion chamber. A transfer piston is slidably positioned between the expansion chamber and the exit chamber. The transfer piston includes a first end projecting into the expansion chamber and aligned with the longitudinal axis of the acceleration chamber, and a second end projecting into the exit chamber. | ||||||
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