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Measurement and control layered water injection system comprising non-metal coiled tubing with pre-embedded cable, and operation method thereof

A technology of layered water injection and operation method, which is applied in the automatic control system of drilling, measurement, earthwork drilling and mining, etc., can solve the problems of complex on-site construction, high labor intensity, low measurement and adjustment accuracy, etc., to achieve simple construction and reduce labor. Strength, the effect of improving work efficiency

Pending Publication Date: 2018-11-06
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a non-metal coiled tube measurement and control layered water injection system with pre-embedded cables and its operation method in view of the above-mentioned deficiencies in the prior art, so as to solve the problems of low measurement and adjustment accuracy, complex on-site construction, and labor-intensive Large, high wellhead pressure, large hidden dangers and other problems in technology and supporting tools

Method used

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  • Measurement and control layered water injection system comprising non-metal coiled tubing with pre-embedded cable, and operation method thereof
  • Measurement and control layered water injection system comprising non-metal coiled tubing with pre-embedded cable, and operation method thereof
  • Measurement and control layered water injection system comprising non-metal coiled tubing with pre-embedded cable, and operation method thereof

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Embodiment Construction

[0038] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", "end", "side" etc. is based on the Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or i...

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Abstract

The invention discloses a measurement and control layered water injection system comprising non-metal coiled tubing with a pre-embedded cable, and an operation method thereof. The measurement and control layered water injection system comprises the flexile composite coiled tubing with the pre-arranged, intelligent water distributors with cables, a ground controller and a matched PC control system.One end of the flexible composite coiled tubing is connected with one ends of the intelligent water distributors with the cables, and the other ends of the intelligent water distributors with the cables are connected with a screen pipe screwed plug and double-action valve. The other end of the flexible composite coiled tubing is connected with an injection machine, the pre-arranged in the flexible composite coiled tubing is connected with a PC through the ground controller, and downhole layered pressure and flow data are monitored in real time through remote cable bidirectional communicationfrom the downhole to the ground and from the ground to a station-control platform. According to the measurement and control layered water injection system comprising the non-metal coiled tubing with the pre-embedded cable, and the operation method thereof, the cable does not need to be bound during workover operation, construction is easy, the efficiency is high, the cost is low, no operation vehicle and equipment on the ground are needed, and the labor intensity is reduced substantially.

Description

technical field [0001] The invention belongs to the technical field of oilfield water injection, and in particular relates to a non-metal coiled tube measurement and control layered water injection system with pre-embedded cables and an operation method thereof. Background technique [0002] Oilfield water injection is one of the most widely used, most effective and most economical measures to increase and stabilize production during oilfield development. With the increasing demand for oilfield development, water injection technology is constantly upgraded. In order to effectively solve the differences between layers and layers, the downhole layered water injection technology is proposed to achieve balanced injection-production development, maximize the swept volume of reservoirs, and improve oilfield production. yield. At present, the commonly used layered water distributors are all mechanical underground water distribution structures. Although the layered water injection ...

Claims

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Application Information

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IPC IPC(8): E21B43/20E21B47/06E21B47/12E21B47/00E21B44/00
CPCE21B43/20E21B44/00E21B47/00E21B47/06E21B47/12
Inventor 胡改星姬振宁姚斌于九政杨玲智毕福伟王子建刘延青刁广智王尔珍
Owner PETROCHINA CO LTD
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