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Water searching pipe column of open-hole horizontal well

A technology for finding water pipe strings and horizontal wells, applied in wellbore/well components, drilling pipes, casings, etc., can solve the problems of immature water finding and plugging technology, and achieve the effect of reliable setting and simple unsealing.

Active Publication Date: 2012-06-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water plugging technology for open-hole horizontal wells is still blank in China, and there is no mature water plugging technology that can be popularized and applied abroad.

Method used

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  • Water searching pipe column of open-hole horizontal well
  • Water searching pipe column of open-hole horizontal well
  • Water searching pipe column of open-hole horizontal well

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Experimental program
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Embodiment Construction

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0031] Please refer to Figure 1 to Figure 4 , are respectively the structural schematic diagram of the open-hole horizontal well water-seeking string of the present invention; the structural schematic diagram of the hydraulic setting tool; the structural schematic diagram of the connection between the long rubber tube water-finding packer and the diversion device; and image 3 The enlarged structure diagram of part A in Fig. As shown in the figure, the open-hole horizontal well water-seeking string proposed by the present invention includes an oil pipe 1, and a suction device 2 is arranged in the oil pipe 1 for sucking liquid in the horizontal well, and the oil pipe 1 extends downward along the wellbore of the horizontal well. ...

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Abstract

The invention discloses a water searching pipe column of an open-hole horizontal well, comprising an oil pipe, wherein a suction device is arranged in the oil pipe; the water searching pipe column is characterized in that: the oil pipe extends along the axis of a shaft of the horizontal well; the lower end of the oil pipe is connected with a horizontal well centering device, a hydraulic setting tool, a long rubber cylinder water searching upper packer, a flow distributing device, a lower packet and a lower centering device which are sequentially connected from top to bottom. The long rubber cylinder water searching upper packer disclosed by the invention employs hydraulic setting and lifting unsetting; the water searching and plugging pipe column of the open-hole horizontal well can realize water searching and plugging of the open-hole horizontal well, and search water step by step on a horizontal section, and is reliable in setting and simple in unsetting.

Description

technical field [0001] The patent of the present invention relates to the field of oil exploitation, and is a pipe string for finding water in an open-hole horizontal well. Background technique [0002] At present, in oil exploitation operations, some open-hole horizontal wells are faced with the problem of rapid increase in water cut and rapid decline in oil production. Therefore, it is important to carry out preliminary research on water plugging, water plugging and well completion methods in fractured carbonate open-hole horizontal wells. It is an important measure to increase the production of horizontal wells and realize the stable production of oil fields. In order to realize the above preliminary research, it is necessary to pump the liquid in the open-hole horizontal well segment to the surface, and determine the fluid properties of this horizontal segment by testing the water content, and obtain the temperature and pressure changes of the liquid in different segment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B33/12
Inventor 张晓文王显荣张静波王丽莉寇微麻德玉高春阳史策盛聪马薇杜艳宋菲菲高鹏卞子峰
Owner PETROCHINA CO LTD
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