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Down-hole real-time adjustable throttling technology

An adjustable and technological technology, applied in the fields of production fluids, wellbore/well components, earth-moving drilling, etc., can solve the problems that the aperture of the throttle gas nozzle cannot be adjusted in real time, and the pressure and production cannot be adjusted in real time, so as to achieve real-time pressure and production. Adjustable, extend the whole production cycle, the effect of reliable and stable process

Active Publication Date: 2017-07-28
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the choke nozzle aperture cannot be adjusted in real time, and the pressure and output cannot be adjusted in real time in the traditional gas well downhole choke process. Therefore, the present invention provides a gas well downhole nozzle that can be adjusted in real time and the pressure can be controlled in real time. , A new process whose output can be adjusted in real time

Method used

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  • Down-hole real-time adjustable throttling technology
  • Down-hole real-time adjustable throttling technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention discloses a downhole real-time adjustable flow process, which includes the following four steps:

[0029] 1) Install a preset working cylinder;

[0030] 2) Put a preset downhole adjustable flow device;

[0031] 3) Adjust the preset downhole adjustable flow device;

[0032] 4) Salvage preset downhole adjustable flow device.

[0033] among them:

[0034] 1) Install the preset working cylinder

[0035] According to the formation pressure, formation temperature and test production, calculate the depth of the preset downhole adjustable flow device, and then install the preset downhole adjustable flow device at a certain depth of the downhole tubing string through the tubing thread. , Provide setting preparations for the release of preset downhole adjustable flow devices.

[0036] 2) Put in a preset downhole adjustable flow device

[0037] After the installation of the preset work is completed, when launching, use the well test wire belt to use the launch tool for the preset...

Embodiment 2

[0043] On the basis of Example 1, the preset working cylinder is composed of an integrally designed working cylinder upper joint, a working cylinder body, and a working cylinder lower joint. The inner surfaces of the working cylinder upper joint and the working cylinder lower joint are provided with threads. In connection with the well-entry tubing, the working cylinder body is provided with two grooves, and the two grooves 4 are respectively matched with the slips 6 and the rubber cylinder 2 of the preset downhole adjustable flow device.

[0044] The application of the present invention is as follows:

[0045] 1. Before putting the preset downhole adjustable flow device into the gas well, the upper joint of the working barrel and the lower joint of the working barrel should be threadedly connected with the well tubing, so that the prefabricated working barrel can be lowered to the predetermined well depth position through the tubing. The buckle type of the lower joint with the wor...

Embodiment 3

[0049] On the basis of the above-mentioned embodiment, the step 2) to release the preset downhole adjustable flow device is to use a release tool to perform the running, setting and anchoring of the preset downhole adjustable flow device.

[0050] The launching tool is composed of an integrated design of the launching tool body and an upper joint of the launching tool. The launching tool body is provided with a pin hole matching the signal receiver 11 of the preset downhole adjustable flow device. The joint is connected with the well test wire tool string through threads.

[0051] The specific applications of the delivery tool are as follows:

[0052] 1. First, before putting the preset downhole adjustable flow device into the gas well, the putting tool and the well test wire tool string should be well connected on the ground.

[0053] 2. After the launching tool is connected, connect the launching tool to the upper end of the preset downhole adjustable flow device through the launchi...

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Abstract

The invention relates to a down-hole real-time adjustable throttling technology. The technology comprises the four steps of mounting a preset working barrel; placing a preset type down-hole adjustable throttle; adjusting the preset type down-hole adjustable throttle; and refloating the preset type down-hole adjustable throttle. Wireless signal transmission and a wireless charging method are adopted by the technology, it can be ensured that the down-hole throttling technology achieving automatic real-time regulating of a throttling air tap and in-time adjusting and control of the pressure and the output, so that a gas well production is greater than a wellbore critical liquid carrying flow rate all the time, liquid loading in well bore is avoided, meanwhile the wellhead pressure of a gas well is kept in a reasonable requirement range all the time, regular production of the gas well is ensured, replacing and dismounting are not needed, and refloating is not needed; and aperture adjusting of the throttling air tap is accurate and sensitive, the technology is reliable and steady, the entire production period of a traditional gas well down-hole throttling technology is prolonged greatly, efficiency and effectiveness of down-hole throttling are improved, practicability is high, an application effect is outstanding, the entire life period of the gas well is prolonged remarkably, and strength and cost of a gas well down-hole remedial work are reduced.

Description

Technical field [0001] The invention relates to the technical field of downhole intelligent throttling technology in a gas field, in particular to a downhole real-time adjustable flow technology. Background technique [0002] The traditional downhole throttling technology is to install chokes at the appropriate positions of the downhole tubing string to make full use of the wellbore temperature to heat the choked natural gas stream, which not only plays the role of throttling and pressure reduction, but also prevents the formation of natural gas hydrate. However, the choke used in the traditional downhole choke technology is a mechanical choke valve that cannot be adjusted. It cannot meet the contradiction of the formation pressure drop, the production drop, and the inevitable wellbore fluid accumulation after the gas well is produced for a long time. Obvious defects or deficiencies in the throttling process. Summary of the invention [0003] The purpose of the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12E21B31/18
CPCE21B31/18E21B43/12
Inventor 仝少凯王祖文温亚魁兰建平雷璠纪冬冬陈文博吴简
Owner BC P INC CHINA NAT PETROLEUM CORP
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