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1.发明公开
公开(公告)号：EP0900320A1
公开(公告)日：1999-03-10
申请号：EP97927743.0
申请日：1997-05-22
CPC分类号： E21B7/061 , E21B21/103 , E21B29/06 , E21B31/16 , E21B31/18 , E21B33/14 , E21B34/10 , E21B41/0042
摘要： A diverting tool (10) having a deflecting surface (10a) equipped with an anchor that secures the tool (10) at a desired subsurface location within the casing of a primary well bore to divert drilling equipment used to drill a lateral bore (28). An annular cup-type seal (17) on the tool seals with the casing. A passage (18) through the tool permits fluid bypass across the seal as the tool is lowered through the casing. The passage is closed from the well surface when the tool is anchored. After the lateral bore is drilled, the tool is used to divert a liner (31) into the lateral bore. The upper end of the liner extends into the casing where it is centralized. The liner (31) is cemented in the lateral bore (28) and in the casing with the cement placed to effect sealing of the intersection of the liner and casing. A tubular mill (40) removes the cement and liner from the casing above the diverter tool leaving a flush opening from the casing into the liner. The mill then telescopes over the deflecting surface, mills the swab-cup seal (17) to disrupt the tool's seal with the casing, locks onto the tool and releases the tool from the casing for retrieval of the combined assembly to the well surface. The tool may be repositioned within the casing to divert tools into the liner.
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公开(公告)号：EP0624225B1
公开(公告)日：1997-03-19
申请号：EP94900655.5
申请日：1993-12-03
CPC分类号： E21B23/04 , E21B17/1014
摘要： A control (1) for at least two stabilizing arms (2) in a drilling or boring device, and particularly arms (2) in a drilling or boring head. Each arm has an end pivotable about an axis (6) parallel to the drilling head axis (4) and including, for each arm (2), a piston (8) for pivoting the arm about said axis (6) between two end positions, i.e. a first position in which it is housed in the head and a second position in which it projects therefrom. Control (10) and synchronizing (11) means are respectively arranged to move the pistons (8) away from the drilling fluid substantially simultaneously in the same direction and with the same amplitude.
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公开(公告)号：EP0424120B1
公开(公告)日：1995-09-20
申请号：EP90311393.4
申请日：1990-10-17
发明人： Perales, Kenneth L.
CPC分类号： G01L19/0092 , E21B17/206 , E21B47/06 , E21B47/065 , E21B47/12 , G01K1/10 , G01K13/02 , G01K13/10
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公开(公告)号：EP0588954A1
公开(公告)日：1994-03-30
申请号：EP92914069.0
申请日：1992-06-10
发明人： RAO, M., Vikram , RODNEY, Paul, F.
摘要： Procédés et dispositif servant à détecter l'approche d'une couche limite (5) en effectuant un forage dans une zone située sous la surface et sensiblement horizontale (4), au moyen d'instruments de détection pourvus de détecteurs (6, 7) comportant des profondeurs d'investigation différentes. On utilise les deux profondeurs de signaux d'investigation, afin de réduire les signaux parasites. Dans certains cas, on peut déterminer les inclinaisons ou les angles de la couche limite par rapport au trou de forage. Dans des modes de réalisation alternatifs, on utilise un ou plusieurs émetteurs d'énergie électromagnétique (16', 18', 20') avec un seul récepteur (R1, R2), afin de produire une signature caractéristique de l'approche d'une couche limite.
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5.发明公开Borehole pressure and temperature measurement system 失效Einrichtung zum Messen von Druck und Temperatur在einem Bohrloch。
公开(公告)号：EP0424120A2
公开(公告)日：1991-04-24
申请号：EP90311393.4
申请日：1990-10-17
发明人： Perales, Kenneth L.
CPC分类号： G01L19/0092 , E21B17/206 , E21B47/06 , E21B47/065 , E21B47/12 , G01K1/10 , G01K13/02 , G01K13/10
摘要： A system is provided for measuring both the temperature and pressure of fluid in a borehole utilizing a single small diameter tube extending from the surface to the desired downhole test location in a borehole. Downhole fluid pressure is transmitted through the small diameter tube, while a sheathed thermocouple or fibre optic line extending along the flow path of the tube is used for transmitting downhole fluid temperature information to the surface. A continuous surface read-out of both pressure and temperature is thus possible, and the temperature read-out may be used to both monitor downhole fluid temperature and increase the accuracy of the fluid pressure measurement system.
摘要翻译： 提供了一种系统，用于利用从井眼中的从表面延伸到期望的井下测试位置的单个小直径管来测量钻孔中的流体的温度和压力。 井下流体压力通过小直径管传递，同时沿着管的流动路径延伸的护套热电偶或光纤线路将井下流体温度信息传输到表面。 因此，压力和温度的连续表面读出是可能的，并且温度读出可以用于监测井下流体温度并提高流体压力测量系统的精度。
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公开(公告)号：EP0418994A1
公开(公告)日：1991-03-27
申请号：EP90303389.2
申请日：1990-03-29
IPC分类号： E21B49/00
CPC分类号： G01N33/2835 , E21B49/005
摘要： A method of determining dilution of a well bore fluid, such as a drilling fluid, comprising preparing a drilling fluid having a known concentration of bromide ion, using the drilling fluid, recovering a sample of the used drilling fluid, determining quantitatively the concentration of bromide ion in the used drilling fluid, comparing the concentration of bromide ion in the sample drilling fluid with the known concentration of bromide ion in the drilling fluid and determining the dilution of the drilling fluid.
摘要翻译： 一种确定诸如钻井液的井眼流体稀释的方法，包括使用钻井液制备具有已知浓度的溴离子的钻井液，回收所使用的钻井液的样品，定量测定溴化物的浓度 将钻井液中的溴离子浓度与钻井液中已知浓度的溴离子进行比较，并确定钻井液的稀释度。
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公开(公告)号：EP0410729A1
公开(公告)日：1991-01-30
申请号：EP90308164.4
申请日：1990-07-25
发明人： Jelsma, Henk H.
CPC分类号： E21B17/20 , E21B7/06 , E21B17/1042 , E21B17/1064
摘要： A downhole centralizer is provided for positioning along a drill pipe string passing through a deviated well bore. A centralizer body (14) is connected to an upper sub (12) by a plurality of lobe-shaped connectors (32,38) which permit angular deviation of the central axis of the upper sub with respect to the central axis of the centralizer body. The centralizer body is preferably connected to a lower sub (16) by similar lobe-shaped connectors (46,44). The opposite ends of each of the upper and lower subs are threaded for fixed enagement with respective upper (20) and lower (26) pipe joints in the tubular string. A flexible flow conduit (48) is positioned within a passageway through the centralizer body, and a pair of upper and lower sealing member (50) are provided to maintain sealed engagement between the respective upper and lower subs and the flow conduit for transmission of fluid through the centralizer. The centralizer of the present invention may be reliably used to center the tubing string within the deviated portion of a borehole, thereby reducing torque losses to the drill bit and wear on the drill string.
摘要翻译： 井下扶正器被提供用于沿着穿过偏心井的钻杆柱定位。 扶正器主体（14）通过多个叶形连接器（32,38）连接到上部副部件（12），这些连接器允许上部子件的中心轴线相对于扶正器主体的中心轴线的角度偏移 。 扶正器主体优选地通过类似的叶状连接器（46,44）连接到下部副（16）。 上部和下部每个的相对端被螺纹连接，用于与管状管柱中的相应的上部（20）和下部（26）管接头固定接合。 柔性流动导管（48）定位在通过中心机主体的通道内，并且设置一对上部和下部密封构件（50）以保持相应的上部和下部凹部和流动导管之间的密封接合，以便传输流体 通过扶正器。 本发明的扶正器可以可靠地用于将油管柱定位在钻孔的偏离部分内，从而减少钻头的扭矩损失和钻柱上的磨损。
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公开(公告)号：EP0883731B1
公开(公告)日：2002-04-10
申请号：EP97900510.5
申请日：1997-01-14
发明人： FANUEL, Philippe
IPC分类号： E21B25/00
摘要： A core sampler, particularly for oil prospecting, including a coring bit (2), an outer barrel (3) for rotating the coring bit (2), and an inner barrel (5) for receiving the core sample (7) in its internal space (8) during coring, the inner (5) and outer (3) barrels being substantially coaxial, and further comprising an intermediate barrel (15) coaxially arranged between the inner (5) and outer (3) barrels and defining a first longitudinal coring fluid channel (16) with the outer barrel (3), and a second longitudinal coring fluid channel (17) with the inner barrel (5), as well as said longitudinal channels (16, 17) and means for at least temporarily selectively causing and/or cutting off coring fluid communication between the rear end (17B) of the second longitudinal channel (17) and/or the rear end (16B) of the first longitudinal channel (16) and/or the rear end (8B) of the internal space (8).
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公开(公告)号：EP0901559A4
公开(公告)日：2002-03-20
申请号：EP97926806
申请日：1997-05-22
发明人： COMEAU LAURIER E , VANDENBERG ELIS , GILLIS IAN
摘要： A single trip tool (10) and method for cutting a window (41) through a well casing (11) and installing an anchoring and orientating sleeve (29) in the casing (11) adjacent the window for subsequent well procedures and equipment installation. A mill (31) held in position within the casing by a hydraulic and weight-set tubular anchor sleeve (29) is used to cut multiple vertical slots in the casing to form a single, large window (41). An indexing mechanism (16) controls circumferential placement of the mill (31). The mill (31) is supported for rotation and longitudinal movement by a carriage mount (39, 40) that advances along dual sloping rails (36, 37) causing the mill (31) to form an increasingly deeper cut during its initial cutting movement. Following formation of the window (41), the mill (31) is retrieved leaving the anchoring sleeve (29) in place for subsequent well procedures. A second embodiment anchors and orients the cutting assembly with an internally contoured coupling (101) that is part of the casing string.
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公开(公告)号：EP0697057B1
公开(公告)日：2001-09-26
申请号：EP94914856.3
申请日：1994-04-21
CPC分类号： E21B17/1085 , E21B10/00 , E21B12/00 , E21B17/00 , E21B17/003 , E21B17/1078 , E21B41/00 , E21B41/0085
摘要： Various steel, downhole tools and components of drill string, including as examples, a PDC drill bit (10), a rotary rock bit (100), a cross-over sub (40), a stabilizer (51), a reamer or hole enlarger (70), and coring bit (120), are selectively treated to cause certain of their parts to be electro-negative with respect to steel, and certain other parts to either have the same electro-negativity as steel, or to be treated electro-positive with respect to steel.
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