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公开(公告)号：EP2909422A2
公开(公告)日：2015-08-26
申请号：EP13780386.2
申请日：2013-10-17
CPC分类号： E21B21/12 , E21B19/16 , E21B21/106
摘要： An apparatus for continuous circulation drilling comprising a tubular body having a main passage extending along a longitudinal axis of the tubular body from a first end of the tubular body to a second end of the tubular body, a side passage and a control passage, the side passage and control passage both extending through the tubular body into the main passage, the tubular body containing a valve assembly which is operable to close the main passage when the side passage is open and to close the side passage when the main passage is open, the assembly further comprising a hydraulic connector which is operable to clamp around the tubular body, the connector comprising a housing with an interior surface which is provided with first and second grooves which, when the connector is clamped around the tubular body, each form a channel which extends in continuous loop around the exterior of the tubular body, there being at least one passage extending through the housing from an exterior surface of the housing into each of the channels, wherein the tubular body is further provided with two grooves which extend around an exterior surface of the body so that, when the connector is clamped around the tubular body, the connector housing engages with the grooves, the grooves thus restricting longitudinal movement of the connector relative to the tubular body, and the side passage and control passage each connect the main passage with one of the channels formed by the connector.
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12.发明公开DRILLING METHOD FOR DRILLING A SUBTERRANEAN BOREHOLE 审中-公开BOHRVERFAHREN ZUM BOHREN EINES UNTERIRDISCHEN BOHRLOCHS
公开(公告)号：EP2900898A2
公开(公告)日：2015-08-05
申请号：EP13771200.6
申请日：2013-09-27
IPC分类号： E21B21/08
CPC分类号： E21B21/001 , E21B17/01 , E21B17/07 , E21B21/08 , E21B21/106 , E21B33/00 , E21B33/064
摘要： A method of drilling a subterranean wellbore using a drill string including the steps of estimating or determining a reduced static density of a drilling fluid based on the equivalent circulating density of the drilling fluid in a section of the wellbore, providing a drilling fluid having substantially that reduced static density, introducing the drilling fluid having said reduced static density into the wellbore, and removing the drilling fluid from the wellbore via a return line.
摘要翻译： 一种使用钻柱钻地下井眼的装置。 该设备包括提升管，布置在提升管中的密封装置，以便形成第一提升管室和第二提升管室以及提升管增压泵。 提升管至少部分地包括钻柱并且围绕钻柱定义基本上环形的空间。 第二室与提升管增压泵流体连通，使得存储在第二提升管室中的杀死流体可以保持在第一压力大于第一提升室中的钻井液的第二压力。
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公开(公告)号：EP2539536B1
公开(公告)日：2015-07-29
申请号：EP11705213.4
申请日：2011-02-23
CPC分类号： E21B19/006 , E21B21/08 , E21B33/085 , E21B2021/006
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公开(公告)号：EP2825721A2
公开(公告)日：2015-01-21
申请号：EP13708504.9
申请日：2013-03-12
IPC分类号： E21B33/06 , E21B21/08 , E21B33/035 , E21B33/064 , E21B17/01 , E21B19/00
摘要： A blowout preventer assembly comprising a blowout preventer and control apparatus, the blowout preventer comprising a housing a sealing element and a fluid pressure operated actuator mounted in the housing, the actuator 18 dividing the interior of the housing into two chambers, namely an open chamber and a close chamber, substantially preventing flow of fluid between the two chambers, and being movable, by means of the supply of pressurized fluid to the close chamber, to urge the sealing element into sealing engagement with a drill pipe extending through the blow out preventer, the control apparatus including a close line which extends from the exterior of the housing to the close chamber, and a source of pressurized fluid which is connected to the close line, wherein the source of pressurized fluid is located adjacent to the housing.
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公开(公告)号：EP2699757A2
公开(公告)日：2014-02-26
申请号：EP12720942.7
申请日：2012-04-20
IPC分类号： E21B17/07
CPC分类号： E21B17/085 , E21B17/07
摘要： A slip joint (10) having a tubular inner barrel (11b) and a tubular outer barrel (11a), the inner barrel (11b) lying at least partially within the outer barrel (11a), the slip joint further comprising a sealing assembly (12a), (12b), (12c) which is operable to provide a substantially fluid tight seal between two sealing surfaces comprising an interior surface of the outer barrel 11a and an exterior surface of the inner barrel (11b), the sealing assembly (12a), (12b), (12c) including an actuator (20) and a seal (46), the actuator (20) being movable to push the seal (46) into engagement with one of the sealing surfaces.
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公开(公告)号：EP2616629A2
公开(公告)日：2013-07-24
申请号：EP11778537.8
申请日：2011-09-13
CPC分类号： E21B21/08 , E21B21/01 , E21B21/106 , E21B47/10 , F15B15/065
摘要： A drilling system including a drill string (12) which extends into a borehole (10), and a well closure system which contains fluid in the annular space (16) in the borehole around the drill string, the well closure system having a side bore whereby controlled flow of fluid out of the annular space in the borehole around the drill string is permitted, the side bore being connected to fluid return line (28) which extends from the side bore to a fluid reservoir (34), there being provided in the fluid return line a valve (30a) which is operable to restrict flow of fluid along the fluid return line to variable extent, and a flow meter (32) operable to measure the rate of flow of fluid along the fluid return line, the flow meter being located between the valve and the side bore, wherein a filter (40) is provided between the flow meter and the side bore, the filter including a plurality of apertures which have a smaller cross - sectional area than the smallest fluid flow lines in the flow meter.
摘要翻译： 一种钻井系统，其包括延伸到井眼（10）中的钻柱（12），以及井筒闭合系统，其在钻柱周围的钻孔中的环形空间（16）中包含流体，井封闭系统具有侧孔 从而允许流体从钻孔柱周围的钻孔中的环形空间的流出流出，所述侧孔连接到从侧孔延伸到流体储存器（34）的流体返回管线（28），所述流体返回管线 所述流体回流管线可操作以限制流体沿流体返回管线流动到可变程度的阀门（30a）;以及流量计（32），其可操作以测量流体沿流体返回管线的流动速率，流量 仪表位于阀和侧孔之间，其中过滤器（40）设置在流量计和侧孔之间，过滤器包括多个孔，其具有比最小流体流线更小的横截面积 流量计 。
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公开(公告)号：EP2825721B1
公开(公告)日：2020-05-06
申请号：EP13708504.9
申请日：2013-03-12
IPC分类号： E21B33/06 , E21B21/08 , E21B33/035 , E21B33/064 , E21B17/01 , E21B19/00
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公开(公告)号：EP3495605A1
公开(公告)日：2019-06-12
申请号：EP19154566.4
申请日：2012-03-21
IPC分类号： E21B33/06
摘要： The present invention relates to a blow out preventer (BOP) for use in the drilling of a wellbore into a subterranean fluid reservoir and / or the production of fluid, typically hydrocarbon fluids, from such a reservoir, in particular to a new configuration of BOP which may have a smaller outer diameter for a given operating force than conventional BOPs.
The new BOP comprises a housing which has a longitudinal axis and which is divided in a first housing part and a second housing part, movement of the first housing part relative to the second housing part being prevented by fasteners, each fastener including a shaft which extends through a fastener receiving passage provided in the first housing part into a fastener receiving passage provided in the second housing part, the housing being further provided with fluid flow passages which extend from the first part of the housing to the second part of the housing, the fluid flow passages being interspersed between fastener receiving passages. In one embodiment of the invention, three annular BOPs according to this design are integrated to form a stack. A seal assembly is mounted in a central bore of the bore, the lowermost end of the seal assembly being supported on a locking dog which extends from the BOP housing into the central bore. The locking dog is movable, for example using hydraulic actuation means, and can be retracted into the wall of the BOP housing.-
公开(公告)号：EP2616629B1
公开(公告)日：2017-02-01
申请号：EP11778537.8
申请日：2011-09-13
CPC分类号： E21B21/08 , E21B21/01 , E21B21/106 , E21B47/10 , F15B15/065
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公开(公告)号：EP2640927A2
公开(公告)日：2013-09-25
申请号：EP11788211.8
申请日：2011-11-16
发明人： ORBELL, Charles , SAVAGE, Pat
摘要： A method of drilling a subterranean borehole comprising: a) pumping a drilling fluid down a drillstring (12), the drillstring (12) having a bit (14) at an end thereof, b) rotating the drillstring (12) about its longitudinal axis so that the bit forms a borehole (10) in the ground, the method further comprising the steps of: c) determining a desired drilling fluid flow rate range d) determining the desired upper and lower limits of the fluid pressure at the bottom of the wellbore (the BHP); e) determining the viscosity of drilling fluid which will maintain the BHP within the range set by the upper and lower BHP limits over the entire or the majority of the required drilling flow rate range; f) adjusting the composition of a drilling fluid to bring the drilling fluid to the viscosity calculated in step e above.
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