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Controllable acid distributing tube and controllable acid distributing method

A technology of acid distribution pipe and acid distribution, which is applied in the direction of earthwork drilling, mining fluid, wellbore/well parts, etc., which can solve the problems of high cost, high price and complicated operation of acid distribution, and achieve saving of acid distribution cost and use The effect of flexibility and broad application prospects

Inactive Publication Date: 2012-03-21
ANTON BAILIN OILFIELD TECH (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the coiled tubing equipment is a special equipment, which is expensive, complicated to operate, and large in volume, which makes the acid distribution cost of the acid distribution method high, and there is still a large gap between the distribution of acid distribution and the actual requirements.

Method used

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  • Controllable acid distributing tube and controllable acid distributing method
  • Controllable acid distributing tube and controllable acid distributing method
  • Controllable acid distributing tube and controllable acid distributing method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0047] image 3 Schematic diagram of the structure of the pipe body provided with the outflow hole of the present invention. The controllable acid distribution pipe of this embodiment includes several pipe bodies 1 with a set length connected in sequence, and a set number of outflow holes 21 are arranged on the surface of each pipe body 1, each of which allows the acid liquid to flow out of the pipe body 1 The outflow hole 21 has a set diameter. Such as figure 2 shown, length L 1 The length of the pipe body is 10m, and the number of outflow devices on it is 7 / m; the length L 2 The length of the pipe body is 10m, and the number of outflow devices on it is 3 / m; the length L 3 The length of the pipe body is 5m, and there is no outflow device on it; the length L 4 The length of the pipe body is 15m, and the number of outflow devices on it is 5 pieces / m. Through the combined connection of each pipe body, a set amount of acid liquid can be injected at the set position of the ...

no. 2 example

[0049] Figure 4 Schematic diagram of the structure of the pipe body provided with the outflow slot of the present invention. The controllable acid distribution pipe of this embodiment includes several pipe bodies 1 with a set length connected in sequence, and a set number of outflow slits 22 are arranged on the surface of each pipe body 1, each of which allows the acid liquid to flow out of the pipe body 1 The outflow slit 22 has a set slit width. Such as Figure 4 As shown, the controllable acid distribution tube in this embodiment has a length L 1 = 10m pipe body, length L 2 = 5m pipe body, length L 3 = 10m pipe body and length L 4 = 8m pipe body, etc., of which the length L 2 There is no outflow device on the pipe body of =5m. Through the combined connection of each pipe body, a set amount of acid liquid can be injected at the set position of the sand control pipe to realize the controllable deployment of acid liquid. The width of the outflow slit 22 can be 0.1 mm ...

no. 3 example

[0051] Figure 5 Schematic diagram of the structure of the anti-acid corrosion protection sleeve provided for the present invention. Such as Figure 5 As shown, the pipe body of this embodiment is provided with an inlay hole, and the inner wall of the inlay hole is provided with an acid corrosion protection sleeve 27 . In actual use, the acid liquid is corrosive to a certain extent and will corrode the surface it flows through. Because the outflow device of the controllable acid distribution pipe of the present invention requires a certain flow resistance to ensure a controllable acid distribution amount. The long-term stability of the flow resistance of the acid liquid flowing out of the pipe body can be ensured by arranging the anti-acid corrosion protective sleeve 27 on the inner wall of the mosaic hole, which is beneficial to the long-term stable work of the controllable acid distribution pipe of the present invention. A kind of mode of anti-acid corrosion protection sl...

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PUM

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Abstract

The present invention relates to a controllable acid distributing tube and controllable acid distributing method; the controller acid distributing tube comprises a long tube; the long tube is installed with a plurality of outflowing devices which lead the acid fluid outflow from the long tube. The controllable acid distributing method comprises: installing the controllable acid distributing tube according to the acid distributing amount; inserting the controllable acid distributing tube into the sand control tube; pouring acid fluid into the controllable acid distributing tube so as to lead the acid fluid controllably outflow from the outflowing device. The controllable acid distributing tube in the present invention has the advantages of controllability, good acid distributing effect andso on; and the invention wastes little acid fluid, saves acid distributing cost, on the condition of ensuring the controllable acid distributing effect, has flexible use, low cost and has wide application prospect.

Description

technical field [0001] The invention relates to an acid distribution device and an acid distribution method used in petroleum exploitation, in particular to a controllable acid distribution pipe and a controllable acid distribution method. Background technique [0002] In oil and natural gas extraction, sand control pipes are usually installed in horizontal wells, vertical wells or inclined wells, and filter layers are set on the surface of sand control pipes. Oil in oil and gas layers enters sand control pipes through these filter layers and is finally pumped to the surface. However, in the process of oil extraction, the clogging material outside the sand control pipe will gather around the sand control pipe, causing blockage around the sand control pipe and the sand control pipe, and reducing the productivity of the well. For water injection wells, impurities in the injected water will form a blockage in the pipe, reducing the daily injection volume. In order to eliminate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/08E21B43/27
Inventor 陈菲李树盛
Owner ANTON BAILIN OILFIELD TECH (BEIJING) CO LTD
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