FRACTURACION CON MIEMBROS TELESCOPICOS Y SELLADO DEL ESPACIO ANULAR.

    公开(公告)号:MX2011011915A

    公开(公告)日:2012-03-06

    申请号:MX2011011915

    申请日:2010-05-10

    Abstract: Se realiza una operación de fracturación en un pozo no revestido. El espacio anular se abarca por los miembros telescópicos que se ubican bajo las válvulas de aislamiento. Un banco determinado de miembros telescópicos puede descubrirse y los miembros telescópicos extenderse para abarcar el espacio anular y emplear el yacimiento en una forma sellada. Fluido de fracturación presurizado puede bombearse a través de los pasajes telescópicos y la porción del yacimiento fracturado y deseado. En un yacimiento adecuado, no es necesaria la cementación para mantener la integridad del sondeo. En yacimientos que necesitan asilamiento del espacio anular, la sarta de perforación en una modalidad preferida puede tener un material externo que crece para sellar el espacio anular en lugar de una operación de cementación tradicional.

    Subterranean screen with varying resistance to flow

    公开(公告)号:GB2480405A

    公开(公告)日:2011-11-16

    申请号:GB201114238

    申请日:2010-02-24

    Abstract: A screen section is made with variable resistance to flow in the screen material to balance the flow along the screen length. In one variation different discrete zones have screens configured for different percentages of open area while all have the same particle filtration capability. In another variation discrete portions have differing amounts of overlapping screen portions so as to balance flow without affecting the particle size screened. The cross-sectional shape of a wire wrap imderlayment for the screen is made closer to trapezoidal to decrease the angle of opening for the incoming flow paths toward the base pipe. In this manner flow resistance is reduced and flow is increased due to reduced turbulence.

    Packer sealing element with shape memory material

    公开(公告)号:AU2007238030B2

    公开(公告)日:2011-06-30

    申请号:AU2007238030

    申请日:2007-04-13

    Abstract: A packer or bridge plug uses a sealing element made from a shape memory polymer (SMP). The packer element receives heat to soften the SMP while the element is compressed and retained. While so retained, the heat is removed to allow the SMP to get stiff so that it effectively seals a surrounding tubular. High expansion rates are possible as the softness of the material under thermal input allows it to be reshaped to the surrounding tubular from a smaller size during run in and to effectively retain a sealed configuration after getting stiff on reduction in its core temperature while longitudinally compressed.

    OPEN HOLE FRAC SYSTEM
    44.
    发明专利

    公开(公告)号:CA2758790A1

    公开(公告)日:2010-10-21

    申请号:CA2758790

    申请日:2010-03-26

    Abstract: A fracturing operation is done in open hole without annular space isolation. The annular space is spanned by telescoping members that are located behind isolation valves. A given bank of telescoping members can be uncovered and the telescoping members extended to span the annular space and engage the formation in a sealing manner. Pressurized fracturing fluid can be pumped through the telescoped passages and the portion of the desired formation fractured. In a proper formation, cementing is not needed to maintain wellbore integrity. The telescoping members can optionally have screens. Normally, the nature of the formation is such that gravel packing is also not required. A production string can be inserted into the string with the telescoping devices and the formation portions of interest can be produced through the selectively exposed telescoping members.

    Method for providing a temporary barrier in a flow pathway

    公开(公告)号:AU2004286216B2

    公开(公告)日:2010-06-10

    申请号:AU2004286216

    申请日:2004-10-21

    Abstract: A flow conduit may have at least one orifice is in the vicinity of a flow source. The source is at least partially covered (and flow blocked by) an optional temporary coating or barrier. The flow pathway between the orifice and the source is temporarily blocked with a degradable material or barrier. The material disintegrates (e.g. under the influence of time or temperature) to optionally produce a product that removes the temporary coating in the area adjacent the barrier. The method is useful in one non-limiting context of recovering hydrocarbons where the flow conduit is the casing or liner of the well and the flow source is a subterranean reservoir where the temporary coating is a filter cake.

    46.
    发明专利
    未知

    公开(公告)号:NO328880B1

    公开(公告)日:2010-06-07

    申请号:NO974620

    申请日:1997-10-06

    Abstract: A filter is provided which combines a woven wire mesh over a supporting body. The supporting body is typically a metal perforated tube which provides fluid communication between the well bore and the production equipment string. The woven wire mesh acts as a filter to prevent the influx of sand particles, provides openings oriented at various angles relative to its surface, so that some area is available for fluid entry even when particulate matter is lodged on the surface above an opening, provides interior channels that allow fluid to travel from one location on the mesh surface to another location over an opening into the supporting body, and does not provide "straight-through" openings, thus forcing the fluid to make multiple turns to pass through the mesh, thereby dissipating the fluid's energy and increases the mesh's erosion resistance. When particulate matter accumulates on the mesh's surface, the resulting particle cake remains porous, heightening the filter's resistance to plugging.

    Removable injection or production flow equalization valve

    公开(公告)号:GB2463999A

    公开(公告)日:2010-04-07

    申请号:GB0920984

    申请日:2008-05-30

    Abstract: One or more valves can be run into a string to land near associated ports in the string for injection or/and production service. When multiple valves are installed they can be initially configured to balance flow into or from a zone. The position of each valve can be altered without removal from the string preferably by a wireline shifting tool. One or more valves can also be removed and replaced when worn preferably using a wireline run tool. The valves can come with an integral sand control feature to facilitate production. Sensors to monitor well conditions and to transmit data to the surface can also be incorporated into the valve module.

    СПОСОБ СОЗДАНИЯ ВРЕМЕННОГО БАРЬЕРА НА ПУТИ ДВИЖЕНИЯ ПОТОКА (ВАРИАНТЫ)

    公开(公告)号:RU2372470C2

    公开(公告)日:2009-11-10

    申请号:RU2006117365

    申请日:2004-10-21

    Abstract: Предложенспособсозданиявременногобарьеранапутидвиженияпотока. Техническийрезультат - обеспечениевременногоблокированиядвиженияпотокас беспрепятственнымудалениемразлагаемогобарьера. Способприменим, преимущественно, длядобычиуглеводородов, когдаканаломдляпотокаявляетсяобсаднаятрубаилихвостовикскважины, аисточникомпотокаявляетсяподземныйрезервуар. Способвременногоблокированияпутидвиженияпотока, вкоторомобеспечиваютнапутидвиженияпотокав зонеегоисточникаилиназначенногоместаканалдляпотока, имеющийпоменьшеймереодноотверстие, отгораживаютпоменьшеймеречастьисточникаилиназначенногоместавременнымпокрытием, создаютразлагаемыйбарьермеждуотверстиеми временнымпокрытиемв зонеисточникаилиназначенногоместа, формируютпроходвокругбарьерамеждуотверстиеми источникомилиназначеннымместом, обеспечиваютраспадбарьерас образованиемпоменьшеймереодногопродуктараспада, осуществляютудалениевременногопокрытияподвоздействиемэтогопродуктав зонебывшегоместарасположенияразлагаемогобарьера. Изобретениетакжекасаетсяспособавременногоблокированиямеханизмаприосуществлениидобычиуглеводородови временнойзащитыскважинногосредствафильтрации. Изобретениеразвитов зависимыхпунктахформулыизобретения. 4 н. и 19 з.п. ф-лы, 2 ил.

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