公开(公告)号：US20150041121A1

公开(公告)日：2015-02-12

申请号：US14384291

申请日：2013-03-14

Applicant: CHEVRON U.S.A. INC.

Inventor： Daniel Francis Alan Hunt ,  Luis Carlos Baralho Bianco ,  Christian André Andresen ,  Jomar Skalmerås

IPC: E21B47/10 ,  E21B21/08 ,  E21B43/04

CPC classification number: E21B47/1015 ,  E21B21/08 ,  E21B43/04

Abstract: A localized inflow tracer (112) may be flushed from a gravel pack (104) surrounding a base pipe (102) of a production well by outwardly venting the inflow tracer. The base pipe (102) may include a non-perforated section (106) disposed adjacent to one or more perforated sections (108). A tracer carrier (110) may be disposed circumferentially about at least a portion of the non-perforated section (106) of the base pipe (102). An inflow tracer (112) may be released from the tracer carrier (110) into production fluid within the gravel pack (104) proximate to the non-perforated section (106) of the base pipe (102) such that the inflow tracer is flushed from the gravel pack (104) into individual ones of the one or more perforated sections (108) of the base pipe (102) and transported with the production fluid. The inflow tracer (112) may be prevented from being flushed directly from the tracer carrier (110) into the base pipe (102) due to a lack of permeability of the non-perforated section of the base pipe (102).

Abstract translation: 可以通过向外排出流入示踪器，从围绕生产井的基管（102）的砾石包（104）冲洗局部流入示踪剂（112）。 基管（102）可以包括邻近一个或多个穿孔部分（108）设置的非穿孔部分（106）。 示踪载体（110）可以围绕基管（102）的非穿孔部分（106）的至少一部分周向地设置。 流入示踪剂（112）可以从示踪剂载体（110）释放到靠近基管（102）的非穿孔部分（106）的砾石包装（104）内的生产流体中，使得流入示踪剂被冲洗 从所述砾石包装（104）到所述基管（102）的所述一个或多个穿孔部分（108）中的单独的一个，并与所述生产流体一起运输。 由于基管（102）的未穿孔部分的渗透性不足，可以防止流入示踪剂（112）从示踪剂载体（110）直接冲入基管（102）。