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Bailing well cage total testing system

A testing system and a general technology, applied in measurement, wellbore/well components, earthwork drilling and production, etc., can solve problems such as long period, complex construction process, and inability to meet dynamic parameter changes of lifting wells

Inactive Publication Date: 2013-04-03
SHAANXI ALLIANCE LOGISTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both at home and abroad, the formation tester is used for testing, but the construction process of this testing method is complex, the cycle is long, the testing cost is high, and it cannot meet the dynamic parameter changes during the production of the extraction well.

Method used

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  • Bailing well cage total testing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The general testing system for lifting wells is composed of a downhole throwing device and a testing device. The testing device includes an electric feeder 1, a fishing head 2, an anchoring device 3, a testing instrument 4 and an instrument tug. The testing device is equipped with a Fluid channel. The throwing device is mainly composed of a DC micro-motor, a control circuit, a driving screw, a guide head, and a fishing claw. Wherein the anchoring device 3 is composed of a fishing joint and a supporting slip.

Embodiment 2

[0012] The pressure monitoring of 8 wells is carried out by using the general testing system of lifting wells in the first implementation. The test works fine. For example, Well Pu 200-16 has a central depth of 1 231 m and a liquid production rate of 2-4 m 3 / d, and the fishing cycle is 1 d.

[0013] The test requires 5 pull cycles. Then a 5-day pressure recovery was performed. During the test period, the first 1-day extraction was performed for 3 extraction cycles, and the fluid production was small, and then it was changed to 2-day extraction once, and after 2 extraction cycles, the production was stopped for pressure recovery test. Because the liquid level recovers quickly, in order to prevent blowout, the lifting operation was started after 3 days, and the whole monitoring process lasted for 10 days. It can be seen that the test curve perfectly records the entire production process. Based on the change law of the bottom hole pressure, the whole pressure history is con...

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Abstract

The invention provides a bailing well cage total testing system, which relates to a bailing well testing device. The bailing well cage total testing system consists of an underground releasing device and a testing device, wherein the testing device mainly comprises a bailing head, an anchoring device, a liquid flow channel, an instrument dragging barrel and a testing instrument part; and the releasing device mainly comprises a direct-current micro-motor, a control circuit, a driving lead screw, a guiding head and a bailing claw. Due to the adoption of the bailing well cage total testing system, the conventional well testing work such as dynamic pressure and pressure recovery monitoring, temperature monitoring and the like can be realized under the condition of a plurality of bailing periods, the geological condition and yield of the bailing well can be comprehended deeply, the geological condition of the type of well can be comprehended deeply according to obtained data, and basis is provided for the makeup of a reasonable working system of the bailing well.

Description

technical field [0001] The invention relates to a testing device for lifting wells. Background technique [0002] Lifting wells are mainly composed of abandoned wells, some exploration wells and remote scattered wells. Oilfield extraction wells mainly exist in the peripheral "three low" areas. These wells are only cased and cannot be routinely tested. Due to the low liquid production rate, there is no need for high investment. The oil production plant only needs to wait until the liquid level returns to a certain depth, and use the lifting vehicle to use the lifting pump to lift periodically to realize intermittent oil recovery. This type of well has the characteristics of low production, small water cut and periodic oil production. Because the production of the extraction well is low, the supporting testing technology has not been paid attention to, and the relevant geological information and production capacity are also poorly known. [0003] There are more than 2,000 ...

Claims

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Application Information

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IPC IPC(8): E21B47/06E21B47/07E21B47/01E21B47/00
Inventor 王耀斌
Owner SHAANXI ALLIANCE LOGISTICS