METHOD FOR FORMING A WINDOW IN A SUBSURFACE WELL CONDUIT
    51.
    发明申请
    METHOD FOR FORMING A WINDOW IN A SUBSURFACE WELL CONDUIT 审中-公开
    用于在表面井管中形成窗口的方法

    公开(公告)号:WO1994009248A1

    公开(公告)日:1994-04-28

    申请号:PCT/US1993008820

    申请日:1993-09-17

    CPC classification number: E21B7/061 E21B7/068 E21B29/06

    Abstract: A method for forming a window (45) in a subsurface well conduit (1) using a coiled tubing unit (46) together with standard rotary rig tools adopted for use with a coiled tubing unit, and a whipstock (62) with no wear projection on the guide surface (68) thereof, and controlling the angular relationship between the tools and the whipstock while forming the window.

    Abstract translation: 一种用于使用连续油管单元(46)在地下井管道(1)内形成窗口(45)的方法以及用于连续油管单元的标准旋转钻机工具,以及没有磨损突起的造斜器(62) 在其导向表面(68)上,并且在形成窗口的同时控制工具和造斜器之间的角度关系。

    GRAVEL PACK SCREEN FOR WELL COMPLETIONS
    52.
    发明申请

    公开(公告)号:WO1994003703A1

    公开(公告)日:1994-02-17

    申请号:PCT/US1993007208

    申请日:1993-07-30

    CPC classification number: E21B43/088 E21B17/22 E21B43/04

    Abstract: A gravel pack well tool comprised of a workstring (18) having a gravel pack screen (21) thereon wherein the workstring (18) can be rotated without applying any substantial torque to the screen jacket (41) which forms part of the gravel pack screen (21). This allows the workstring (18) to be rotated in either direction during installation or removal of the gravel pack screen (21) without damaging the screen jacket (41). The gravel pack screen (21) is comprised of a fluid-permeable base pipe (40) having a screen jacket (41) rotatably mounted thereon.

    Abstract translation: 一种砾石充填井具,包括具有砾石包装筛网(21)的工作台(18),其上可以旋转工作绳(18)而不对构成砾石包装屏幕的一部分的筛套(41)施加任何实质的扭矩 (21)。 这允许在安装或移除砾石包装屏幕(21)的同时在任一方向上旋转工作绳(18)而不损坏屏蔽套(41)。 砾石包装筛网(21)由可旋转地安装有筛套(41)的流体可渗透的基管(40)组成。

    METHOD AND APPARATUS FOR CLEANING TUBULARS
    53.
    发明申请
    METHOD AND APPARATUS FOR CLEANING TUBULARS 审中-公开
    清洁管的方法和装置

    公开(公告)号:WO1993025328A1

    公开(公告)日:1993-12-23

    申请号:PCT/US1993005380

    申请日:1993-06-07

    CPC classification number: B08B9/0555

    Abstract: A method and gelatin pig is provided for scraping and cleaning tubulars. The gelled, cleaning pig has a body comprised of gelled technical gelatin which has a hardened outer layer. The pig is molded in a size sufficient for the periphery of the body to contact the interior wall of the tubular to be cleaned. The outer surface of the gelatin is hardened by merely exposing the outer surface of the gelatin to the atmosphere (i.e. air) or by applying a hardener (e.g. aldehyde) to the outer surface. In operation, the gelatin pig is inserted into and passed through the pipeline to scrap and clean same. The pig is bio-degradable which can be accelerated by adding a bio-reactive agent, e.g. yeast, to the gelatin.

    FOAM REDUCTION OF VAPOR EMISSIONS FROM STORAGE TANKS
    54.
    发明申请
    FOAM REDUCTION OF VAPOR EMISSIONS FROM STORAGE TANKS 审中-公开
    从储存罐中减少蒸气排放的泡沫

    公开(公告)号:WO1993024370A1

    公开(公告)日:1993-12-09

    申请号:PCT/US1993004674

    申请日:1993-05-17

    CPC classification number: B65D90/28 B65D88/34 Y10S220/902

    Abstract: Floating roof storage tanks (10) are modified to include a foam surge tank (28), a low-pressure blower (44) and a foam generator (48) for generating vapor-suppressing foam during withdrawal of liquid from the storage tank and after the floating roof (16) reaches its lowest elevation in the storage tank so that the tank space previously occupied by volatile liquid is provided with a vapor-suppressing foam blanket during liquid withdrawal and refill. The surge tank is mounted directly on the floating roof and discharges its foam through an opening in the roof into the tank storage space. During liquid refill the foam may be forced out through a vent conduit (58) onto the roof of the tank and dissolved and recovered.

    WHIPSTOCK FOR OIL AND GAS WELLS
    55.
    发明申请
    WHIPSTOCK FOR OIL AND GAS WELLS 审中-公开
    石油和天然气的开采

    公开(公告)号:WO1993015301A1

    公开(公告)日:1993-08-05

    申请号:PCT/US1993000684

    申请日:1993-01-25

    CPC classification number: E21B7/061 E21B23/01

    Abstract: A whipstock (14) adapted for insertion into a wellbore through a tubing string (12) having a smaller diameter than the wellbore casing (10) or the open hole portion of the wellbore includes a setting mechanism comprising extendable legs (42, 48, 50) which engage the wellbore wall to bias the whipstock (14) into a position of inclination of the whipstock guide surface (22) relative to the wellbore axis (19). The setting mechanism includes an actuating rod (62) which may be actuated by a conventional downhole tool setting device to extend and retain the legs (42, 48, 50) in their extended position. Cooperating ratchet means (94) and tensionable couplings (82) on the setting mechanism including a frangible coupling part (100) permit actuation of the whipstock to its set position and retrieval of setting device. The whipstock (14) is releasable from the setting device by an adaptor (24) having cooperating ball keys (36) engageable with an adaptor actuating shaft (28) and the upper end of the whipstock body.

    ABLATING GELATIN PIG AND METHOD FOR USE IN TUBULARS
    56.
    发明申请
    ABLATING GELATIN PIG AND METHOD FOR USE IN TUBULARS 审中-公开
    摘要使用凝胶糊及其用于管状体的方法

    公开(公告)号:WO1992018151A1

    公开(公告)日:1992-10-29

    申请号:PCT/US1992002885

    申请日:1992-04-09

    CPC classification number: B03C1/28 B05D7/222 E21B41/02 F16L58/1009

    Abstract: An ablating pig (20) comprised of a mass of gelatin for use in treating tubulars (15). The pig will ablate as it passes through the tubular thereby depositing a treatment layer (21) onto the wall of the tubular. The pig can be molded outside the tubular or it can be formed in situ. The pig is formed by mixing common (i.e. technical) gelatin of the type derived from collagen with a heated liquid and a treating solution (e.g. corrosion inhibitor, drag reducer, etc.). In one aspect, magnetic particles (13) are entrained in the mass. The mass can be integral or it can be made up of individual components of gelatin. A slug of the treating solution can also be passed through the pipeline between two ablating gelatin pigs. For high temperatures applications, a hardener may be used to increase the melting temperature of the gelatin.

    Abstract translation: 一种由用于治疗管状物(15)的大量明胶组成的消融猪(20)。 当猪通过管时,猪会烧蚀,从而将处理层(21)沉积在管的壁上。 猪可以在管状外部模制,也可以在原位形成。 通过将来自胶原的普通(即技术)明胶与加热的液体和处理溶液(例如防腐剂,减阻剂等)混合来形成猪。 在一个方面,磁性颗粒(13)被夹带在质量块中。 质量可以是一体的,或者它可以由明胶的各个组分组成。 处理溶液的一团块也可以通过两条消化明胶猪之间的管道。 对于高温应用,可以使用硬化剂来增加明胶的熔融温度。

    DRILL CUTTINGS DISPOSAL METHOD AND SYSTEM
    57.
    发明申请
    DRILL CUTTINGS DISPOSAL METHOD AND SYSTEM 审中-公开
    钻孔切割处理方法和系统

    公开(公告)号:WO1992003633A1

    公开(公告)日:1992-03-05

    申请号:PCT/US1991005159

    申请日:1991-07-22

    CPC classification number: E21B41/0057 B09B1/008 E21B21/066

    Abstract: Drill cuttings are disposed of by injection into a subsurface formation (12) by way of an annular space (26) formed in a wellbore (10). The cuttings are removed from the drilling fluid, conveyed to a shearing and grinding system that converts the cuttings into a viscous slurry with the addition of water. The system comprises a receiving tank (48, 50) and a centrifugal pump (56, 58) for recirculating the mixture of cuttings and water (seawater) between the pump and the receiving tank. A discharge conduit (76) is connected to the pump (56, 58) for moving the viscous slurry to an injection pump (78) for high pressure injection into the formation.

    A METHOD FOR DECONVOLUTION OF NON-IDEAL FREQUENCY RESPONSE OF PIPE STRUCTURES TO ACOUSTIC SIGNALS
    58.
    发明申请
    A METHOD FOR DECONVOLUTION OF NON-IDEAL FREQUENCY RESPONSE OF PIPE STRUCTURES TO ACOUSTIC SIGNALS 审中-公开
    一种用于解调管道结构对声学信号的非理想频率响应的方法

    公开(公告)号:WO1992002833A1

    公开(公告)日:1992-02-20

    申请号:PCT/US1991005605

    申请日:1991-08-07

    Abstract: A method of deconvolving the non-ideal frequency response from acoustic vibrations transmitted along a structure such as a drill string (6) is disclosed. The deconvolution (30) retains the values of the transmission time between the signal source and the receiver, in the form of an exponential phase term, and is multiplied (32) by the amplitude frequency response of the structure. The input data time series, after transformation (34) into the frequency domain, is then divided by the deconvolution operator (35). The deconvolution method may be used in a noise reduction method where both axial and torsional vibrations are generated from the same location, where one of the time series is shifted (40) by the amount of the time delay, so that the vibrations generated from the same location coincide, providing reinforcement of the desired signal. The deconvolution method may thus be used in determining a seismic source signature in prospecting where a drill bit (10) is the source, in analyzing drilling parameters from drill string vibrations, in stress wave telemetry, and also in leak detection.

    CONTINUOUS SILICON CARBIDE WHISKER PRODUCTION
    60.
    发明申请
    CONTINUOUS SILICON CARBIDE WHISKER PRODUCTION 审中-公开
    连续生产碳化硅砂轮

    公开(公告)号:WO1983002108A1

    公开(公告)日:1983-06-23

    申请号:PCT/US1982001738

    申请日:1982-12-14

    CPC classification number: C30B29/36 C01B32/956 C01P2004/10 C30B25/005

    Abstract: The invention features methods and apparatus for obtaining silicon carbide whiskers on a continuous basis. Rice hulls or other carbon and silicon containing feed materials are continuously fed to a conversion zone in an unagitated state in order to promote whisker growth. The conversion zone is continuously purged, preferably with an inert gas such as nitrogen. The purging gas is vented directly out of the conversion zone and carries away gaseous reaction products and impurities, prevents oxidation of the whiskers and keeps glasses from condensing and depositing on the furnace surfaces. The feed materials are fed in a dry state to the conversion zone in order to prevent erosion of the furnace walls. After conversion and cooling the whiskers are separated from the mass of particulate silicon carbide. The whiskers find use as reinforcements.

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