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：US09109440B2

公开(公告)日：2015-08-18

申请号：US13972669

申请日：2013-08-21

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Xiangdong Qiu ,  Frank F. Chang

IPC: G01N33/24 ,  E21B43/16 ,  E21B43/25 ,  C09K8/72

CPC classification number: G01N33/24 ,  C09K8/72 ,  E21B43/16 ,  E21B43/25

Abstract: The subject disclosure relates to matrix acidizing. More specifically, systems and methods are described for estimating a diffusion coefficient for an acid fluid used to stimulate a subterranean reservoir wherein a spent acid is formulated that includes one or more by-products of the reaction between the fluid and rock. A rock sample, such as in the form of a rotating disk is exposed to spent acid under elevated pressure and temperature conditions while the fluid is sampled and analyzed. A diffusion coefficient for the spend acid is estimated.

Abstract translation: 本发明涉及基质酸化。 更具体地，描述了用于估计用于刺激地下储层的酸性流体的扩散系数的系统和方法，其中配制废酸，其包括流体和岩石之间的反应的一种或多种副产物。 在采样和分析流体的同时，在升高的压力和温度条件下，将诸如旋转盘形式的岩石样品暴露于废酸。 估计消耗酸的扩散系数。