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Tracer water exploration and segmented water control system and method

A technology of tracking and water control valve, which is applied in the fields of earthwork drilling, fluid extraction, measurement, etc., and can solve the problems of low efficiency of water search and water control, etc.

Pending Publication Date: 2020-10-23
CHINA OILFIELD SERVICES
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a system and method for tracing water finding and segmented water control to solve the problem of low efficiency of water finding and water control in related technologies

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  • Tracer water exploration and segmented water control system and method
  • Tracer water exploration and segmented water control system and method
  • Tracer water exploration and segmented water control system and method

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Embodiment Construction

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0029] In order to solve the problem of low efficiency of water finding and water control in related technologies, an embodiment of the present invention provides a tracer water search and segmented water control system, including a tracer water search pipe string and a water detector set in the tracer water search pipe string Segmented water control string, tracer water detection string includes multiple expansion packers used to separate the reservoir of the horizontal well into multiple water control sections and tracers used to obtain oil and water information for each wat...

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Abstract

The invention discloses a tracer water exploration and segmented water control system and method. The tracer water exploration and segmented water control system comprises a tracer water exploration tubular column and a segmented water control tubular column arranged inside the tracer water exploration tubular column. The tracer water exploration tubular column comprises a plurality of expansion packers used for dividing a reservoir of a horizontal well into a plurality of water control sections, and tracer agent screen tubes used for obtaining oil and water information of each water control section. The adjacent expansion packers are connected by the tracer agent screen tubes. The segmented water control tubular column comprises a plurality of isolating and sealing nipples used for sealing the multiple water control sections in a segmented mode to form a plurality of sealed sections, and water control valve nipples used for water-controlled oil mining in the sealed sections. The adjacent isolating and sealing nipples are connected by the water control valve nipples. According to the embodiment, a water outlet layer is determined in a manner that the tracer water exploration tubular column conducts segmented tracer water exploration on the reservoir; and the multiple water control sections are subjected to segmented sealing and water-controlled oil mining through the segmentedwater control tubular column lowered inside the tracer water exploration tubular column, so that the efficiency of water exploration and water control is enhanced.

Description

technical field [0001] The invention relates to the technical field of oilfield development, and more specifically, to a system and method for water tracing and segmental water control. Background technique [0002] In the water shutoff and profile control operations of offshore high water cut reservoirs, two methods are usually used, namely mechanical water shutoff and chemical water shutoff, and before the water shutoff operation, the key to determine the success or failure of the water shutoff is to accurately find the water outlet section. At present, in terms of chemical water plugging, when chemical agents are lowered to block the water-producing section, the permeability of the reservoir is seriously reduced, and the productivity of the oil well is sacrificed while the water is blocked. In terms of mechanical water plugging, the principle of water plugging and water control of conventional variable density screens, center pipe completions and inflow control device (IC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/11E21B43/12
CPCE21B47/00E21B43/12
Inventor 梁月松李良庆周欢董社霞高彦才徐凤祥李效波李强
Owner CHINA OILFIELD SERVICES
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