公开(公告)号：US20140060815A1

公开(公告)日：2014-03-06

申请号：US14018165

申请日：2013-09-04

Applicant: Schlumberger Technology Corporation

Inventor： Chunnong Wang ,  David Mills ,  Kuo-Chiang Chen

IPC: E21B33/12

CPC classification number: E21B33/1208

Abstract: A sealing device of enhanced configuration for use in downhole in a well. The device may include an element of elastomeric and unitary construction. At the same time, however, the element may include a substantially cured outer shell disposed about a substantially under-cured inner core. Thus, enhanced robustness and durability may be provided to the device in light of downhole conditions without sacrifice to sealable function of the device.

Abstract translation: 一种用于井中井下的增强结构的密封装置。 该装置可以包括弹性和单一构造的元件。 然而，同时，元件可以包括围绕基本上未固化的内芯设置的基本固化的外壳。 因此，可以根据井下条件向装置提供增强的鲁棒性和耐用性，而不牺牲装置的可密封功能。

公开(公告)号：US20130342211A1

公开(公告)日：2013-12-26

申请号：US13796960

申请日：2013-03-12

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Indranil Roy ,  Manuel P. Marya ,  Kuo-Chiang Chen ,  Amit Mohan ,  Richard Lewis ,  Craig Borman ,  Tatiana Reyes Hernandez ,  Srinand S. Karuppoor ,  Rashmi B. Bhavsar ,  Oliver C. Mullins

IPC: G01V3/02

CPC classification number: G01V3/02 ,  G01V3/24

Abstract: A method for analyzing fluid withdrawn from a subsurface formation includes disposing the withdrawn fluid in a chamber and maintaining the fluid in the chamber substantially at a same temperature and pressure as exists in the subsurface formation. Electric current is passed through the fluid in the chamber using at least one electrode made from a selected metal, the electric current comprising direct current and alternating current of frequency sufficient to determine at least one of (i) resistance of the fluid sample in the chamber directly and (ii) from the direct current determine a polarization resistance of the at least one electrode.

Abstract translation: 用于分析从地下地层排出的流体的方法包括将抽出的流体设置在室中并将室内的流体保持在基本上与存在于地下地层中相同的温度和压力。 电流通过使用由选定金属制成的至少一个电极的腔室中的流体通过，该电流包括直流电和频率交替电流，足以确定以下至少一个：（i）腔室中的流体样品的电阻 直接和（ii）从直流确定至少一个电极的极化电阻。

公开(公告)号：US20150308224A1

公开(公告)日：2015-10-29

申请号：US14793237

申请日：2015-07-07

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Stephen Dyer ,  Athar Ali ,  Frank F. Chang ,  Xiangdong Qiu ,  Kuo-Chiang Chen

IPC: E21B34/06

CPC classification number: E21B34/06 ,  E21B34/063 ,  E21B41/0035 ,  E21B43/12 ,  E21B2034/007

Abstract: Systems and methods using enhanced flow control devices are described. The flow control devices can be selectively closed completely or have its effective flow area reduced to restrict production (or injection) by use of a chemical trigger mechanism. In addition, some of the systems described herein deploy specific targeted chemical tracers, dissolvable in the unwanted production fluid (e.g. water or gas). These chemical tracers once dissolved will enter the production stream and be identified at the surface. The identification will determine which segment of the completion is producing the unwanted fluid. According to some embodiments, an appropriate chemical trigger is placed, for example, by pumping down through the tubing and utilizing intelligent completion valve to place the chemical, or by spotting with coiled tubing and bullhead to the formation, or by other methods of chemical placement. The chemical trigger will only trigger the active chemical in the appropriate flow control device. This chemical will then change state—dissolve, create thermal reaction, create a pressure swell or expand—which in turn allows a mechanical device to shift position such that a valve in the flow control device closes, or reduces its flow by restricting the flow area by swelling/expansion of the active chemical.

Abstract translation: 描述使用增强的流量控制装置的系统和方法。 流量控制装置可以被完全选择性地关闭或者其有效流动面积减小以通过使用化学触发机构限制生产（或注入）。 此外，本文所述的一些系统部署特定的目标化学示踪剂，其可溶于不需要的生产流体（例如水或气体）中。 这些一次溶解的化学示踪剂将进入生产流，并在表面进行鉴定。 识别将确定完成的哪一段产生不需要的流体。 根据一些实施例，例如通过向下泵送管道并利用智能完井阀来放置化学品，或者通过用盘管和斗杆点样到地层或通过其他化学放置方法来放置合适的化学触发器 。 化学触发器只会在适当的流量控制装置中触发活性化学物质。 这种化学物质将改变状态溶解，产生热反应，产生压力膨胀或膨胀，这又允许机械装置移动位置，使得流量控制装置中的阀关闭，或通过限制流动面积来减少其流动 通过活性化学品的膨胀/膨胀。

公开(公告)号：US09650867B2

公开(公告)日：2017-05-16

申请号：US13856268

申请日：2013-04-03

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Jahir Pabon ,  Kuo-Chiang Chen

IPC: E21B34/14 ,  E21B41/00 ,  E21B43/26

CPC classification number: E21B34/14 ,  E21B41/00 ,  E21B43/26

Abstract: A mechanism for selectively activating a plurality of downhole pathways. The method includes a casing segment which includes a plurality of casing ribs, a valve which includes a sleeve coupled for movement between an open and normally closed position, a rocker member mounted to the sleeve, a dart for pumping in hole including a dart profile matched to the rocker member profile such that the dart profile couples to the rocker member profile when in close proximity and, in turn, the sleeve moves using hydraulic force from the closed position to the open position.