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Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method

A technology for finding water pipe strings and pumping wells, which can be used in earth-moving drilling, wellbore/well components, measurement, etc., and can solve problems such as high operating costs and complex operations.

Active Publication Date: 2010-07-28
新疆石油管理局采油工艺研究院
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Problems solved by technology

However, its operation is complicated and the operation cost is high

Method used

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  • Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method
  • Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method
  • Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method

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Embodiment Construction

[0027] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0028] Below in conjunction with preferred embodiment and accompanying drawing, the present invention will be further described:

[0029] as attached figure 1 As shown, the three-layer water-seeking string of the pumping well used in the oil field includes a constant-pressure check valve 13, a lower layer changeable layer water-seeking packer 14, a middle packer 15, an upper packer 16 that can bear pressure in one direction, The water-seeking on-off valve 17 and the rod pump 18 are connected together with oil pipes 19 in the order from bottom to top to form a pipe string. The packer 16 adopts a one-way pressure-bearing packer with a one-way valve inside it, or the upper packer 16 adopts a leather bowl-type packer whose bowl-shaped rubber cylinder opens upward.

[003...

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Abstract

The invention relates to a pumping well three layers water research tubular pile and the water research method. It includes constant pressure check valve, down part changeable water research packer, middle packer, upper part packer that could bear pressure, water research switch valve, bar type oil pump. The water research method includes the following steps: installing tubular pile, taking sealing, swabbing down layer, swabbing middle layer and swabbing upper layer. The invention has reasonable compact structure. It could realize three layers water research through bar type oil pump and is convenient to operate.

Description

1. Technical field: [0001] The invention relates to the technical field of water-seeking operations in cooperation with downhole packers in oilfield operations, and relates to a three-layer water-seeking pipe string for an oil pumping well and a water-seeking method thereof. 2. Background technology: [0002] At present, domestic oil fields use downhole tools and pumps to find water, and the pipe string can be used to find three layers without moving the string. There are two main methods used. One is to use downhole timing electric switch valves, which rely on battery power. Automatically open and close within the set time, three packers separate the three layers, and analyze the water content of the three layers by pumping the oil pump; the other is to use three packers with different opening pressures Level switching valves, three packers separate the three intervals, and the three valves are opened and closed respectively by pressing from the tubing or casing according t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/10E21B49/08E21B33/122
Inventor 袁新生
Owner 新疆石油管理局采油工艺研究院
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