Gas lift flow assistance horizontal well water exploration pipe column and method
A technology for finding water pipe strings and horizontal wells, which is applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc., can solve problems such as complicated procedures, and achieve the effects of simple construction technology, short water finding period, and simple and reasonable structure.
Active Publication Date: 2015-05-20
PETROCHINA CO LTD
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Problems solved by technology
The disadvantage is that it needs to be suppressed and set. After the test, the packer needs to be unsealed step by step. It takes multiple operations to complete, and the process is too complicated
Method used
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Embodiment 1
[0021] Embodiment 1: as figure 1 As shown, the present invention will be described in detail by taking a three-stage horizontal well gas lift to assist flow and find water string as an example.
[0022] A gas-lift flow-assisted horizontal well water-seeking string, including a surface gas injection device 1, a gas injection valve 2, a gas injection pipeline 3, a casing 4, an oil pipe 5, a gas lift valve 6, a cup packer 7, and a screen 8 , Silk plug 9 components. Ground gas injection device 1 is connected to gas injection valve 2, the other end of gas injection valve 2 is connected to gas injection pipeline 3, gas injection pipeline 3 is connected to casing 4, and casing 4 contains: gas lift valve 6 connected to oil pipe 5, leather bowl seal Spacer 7, screen pipe 8 and plug 9.
[0023] The guide plug 9 is connected to the free end of the tail pipe.
[0024] Several tail pipes are connected to the screen pipe 8, so that the fluid sprayed at the lower part of the packer commun...
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The invention discloses a gas lift flow assistance horizontal well water exploration pipe column and a method, and belongs to the technical field of horizontal well water exploration processes. A ground gas injection device is connected with a gas injection valve; the other end of the gas injection valve is connected with a gas injection pipeline; the gas injection pipeline is connected with a casing; and a gas lift valve connecting oil pipe, a leather bowl packer, a screen pipe and a screw plug are arranged in the casing. The gas lift flow assistance horizontal well water exploration pipe column is simple and reasonable in structure, realizes quick water exploration of horizontal wells with high water content, is short in water exploration period, is simple in construction process, can largely improve the water exploration efficiency, and provides the basis for water control and oil stabilization of horizontal wells in oil fields.
Description
technical field [0001] The invention relates to a water-seeking pipe string and a method for a gas-lift-aided flow-aided horizontal well, and belongs to the technical field of gas-lifted-flow-assisted horizontal well water-finding technology. Background technique [0002] At present, intelligent switches are used to regularly control the production of each layer in the segmented water detection test string of the casing completion horizontal well. . In this process, each interval is blocked by a packer, the water search period is long, and the construction process is complicated, which seriously affects the production progress on site. In view of the defects of the above-mentioned known technologies, the designer has developed a gas-lift flow-assisted horizontal well water-seeking string and method of the present invention based on years of experience in production design in this field and related fields. [0003] "A new casing casing completion and horizontal well integra...
Claims
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IPC IPC(8): E21B47/10E21B43/00
CPCE21B43/168E21B47/10
Inventor 崔文昊吕亿明黄伟甘庆明牛彩云王百李大建朱洪征
Owner PETROCHINA CO LTD