Evaluation equipment and evaluation method for leakage and overflow monitoring instrument of three-high gas well

A lost circulation and overflow technology, applied in wellbore/well components, measurement, earthwork drilling, etc., can solve the problems of unmonitored performance, work stability verification, etc., to reduce blowout accidents, with strong applicability and reliability high sex effect

Pending Publication Date: 2022-05-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, the research focus of scholars on the downhole monitoring of lost circulation and overflow during drilling is to develop new detection devices and methods after theoretical research, but there is no effective verification of monitoring performance and working stability.

Method used

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  • Evaluation equipment and evaluation method for leakage and overflow monitoring instrument of three-high gas well
  • Evaluation equipment and evaluation method for leakage and overflow monitoring instrument of three-high gas well
  • Evaluation equipment and evaluation method for leakage and overflow monitoring instrument of three-high gas well

Examples

Experimental program
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Effect test

Embodiment 1

[0064] combine Figure 1 ~ Figure 3 As shown, the present embodiment adopts the evaluation equipment of the three-high gas well lost circulation and overflow monitoring device of the present invention to carry out the experiment, and its experimental procedure is as follows:

[0065] (1) According to the actual conditions of the target work area, convert and determine the experimental process parameters, including drilling fluid components, blowout displacement, formation temperature, injection pressure and drilling fluid flow rate, etc.

[0066] (2) According to the experimental design requirements, connect all experimental modules and components into the experimental process, and after confirming that the signal transmission of the drill collar nipple 30 is normal and all other components are operating normally and complying with regulations, close all valves.

[0067] (3) Only open the valves F1 and F2, open the high-displacement air compressor 51 and the booster pump 53 to...

Embodiment 2

[0077] combine figure 1 and figure 2 As shown, the present embodiment adopts the evaluation equipment of the three-high gas well leakage and overflow monitoring device of the present invention to simulate the blowout of a gas well in a certain three-high gas field in Sichuan, and the experiment process is as follows:

[0078] (1) According to the actual conditions of the target work area, convert and determine the experimental process parameters.

[0079] Drilling fluid density is 1.4g / cm 3 , Blowout displacement from 1.5m 3 / min gradually increased to 10.0m 3 / min, formation temperature 70°C, etc.

[0080] (2) According to the experimental design requirements, connect all experimental modules and components into the experimental process, and after confirming that the signal transmission of the drill collar nipple 30 is normal and all other components are operating normally and complying with regulations, close all valves.

[0081] (3) Only open the valves F1 and F2, ope...

Embodiment 3

[0090] combine figure 1 and figure 2 As shown, in this embodiment, the evaluation equipment of the three-high gas well leakage and overflow monitoring device of the present invention is used to simulate the blowout of a "three-high" gas well in the Northeast Sichuan region.

[0091] The experimental process of this embodiment is basically the same as that of Example 2, the difference being:

[0092] Drilling fluid density is 1.7g / cm 3 , Blowout displacement from 5.0m 3 / min quickly rises to 15m 3 / min, formation temperature 120°C.

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Abstract

The invention discloses evaluation equipment for a leakage and overflow monitoring device of a three-high gas well, and the equipment comprises a shaft module which comprises a sleeve and a drilling tool assembly penetrating into the sleeve, and the drilling tool assembly sequentially comprises a drill rod, a drill collar and a drill bit from top to bottom; the drilling fluid circulating module is used for enabling drilling fluid to circularly flow in the shaft module; the overflow simulation module is used for guiding the experimental gas into the shaft module; the well leakage simulation module is used for exporting the drilling fluid out of the shaft module; the to-be-evaluated monitoring device is connected to the drill collar; and the data acquisition and analysis module is in communication connection with the to-be-evaluated monitoring device, the overflow simulation module and the well leakage simulation module. The invention further discloses an evaluation method of the three-high gas well leakage and overflow monitoring device. The working conditions of well leakage and early overflow are simulated, the underground overflow monitoring device is evaluated, basis and support are provided for development of the overflow monitoring technology, and blowout accidents caused by missing of the optimal well control opportunity are reduced.

Description

technical field [0001] The invention relates to the technical field of gas well control safety in the development of oil and gas resources, in particular to an evaluation device and evaluation method of a three-high gas well leakage and overflow monitoring instrument. Background technique [0002] Sangao oil and gas fields refer to oil and gas fields characterized by high reserve abundance, high gas reservoir pressure, and high hydrogen sulfide content. With the increasing domestic energy demand, in order to ensure the security of my country's energy strategy, my country's oil exploration efforts have been continuously strengthened. Exploration The scope continues to expand, and more and more three-high blocks in the southwest and northwest have entered the development range. [0003] Due to the existence of high-concentration hydrogen sulfide, there are many major risks in the exploration and development of Sangao Oil and Gas Field. Blowout and lost circulation during the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/10
CPCE21B47/10
Inventor 高凯歌靳彦欣刘铭刚李勇逄铭玉王婷傅建斌商翼王雪蒋秀于超花靖
Owner CHINA PETROLEUM & CHEM CORP
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