Controllable liquid injection pipe and controllable liquid injection method convenient for downhole and uplifting

A liquid injection pipe and liquid injection technology, which is applied in the direction of earthwork drilling, wellbore/well components, and production fluids, etc., can solve the problems of reducing the lifting speed, increasing the outer diameter of the bladder, and low discharge speed, so as to increase the lifting speed , Eliminate the effect of skin damage
CN101498199BInactive Publication Date: 2012-12-26ANTON BAILIN OILFIELD TECH (BEIJING) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANTON BAILIN OILFIELD TECH (BEIJING) CO LTD
Publication Date
2012-12-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a controllable liquid injection pipe convenient for descent and lifting and a controllable liquid injection method. The controllable liquid injection pipe convenient for descent and lifting comprises a controllable liquid injection pipe, wherein the controllable liquid injection pipe is provided with a pressure opener which is not closed after being opened, and after the pressure opener is opened, the controllable liquid injection pipe is excellently communicated with the outside by the pressure opener, thus, when the controllable liquid injection pipe is lifted, because the inside and the outside of the controllable liquid injection pipe are excellently communicated, the inside and outside pressure difference of the controllable liquid injection pipe is greatly reduced, the contracted state of a bladder-type packer is guaranteed, and the bladder is prevented from being damaged and the skin of the bladder is prevented from outwardly rolling caused by the friction between the expanded bladder-type packer and the well wall so as to be convenient for lifting the liquid injection pipe out from an oil well, a gas well or an injection well, the lifting speed of the liquid injection pipe is greatly increased, and the normal production requirements of the oil field are satisfied. The controllable liquid injection pipe is convenient for descent and lifting, has flexible utilization, simple operation, little liquid injection wastage and low expenditure and can realize controllable liquid injection.
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Description

technical field

[0001] The invention relates to a downhole liquid injection device and a liquid injection method used in the field of oil or natural gas exploitation, in particular to a controllable liquid injection pipe and a controllable liquid injection method that are convenient for going down the well and lifting up. Background technique

[0002] According to the actual production needs of oil wells, gas wells or injection wells, it is necessary to inject a required amount of liquid or gas (collectively referred to as injection medium) into different formations during the oil or natural gas production process, such as water injection in the process of water flooding; Water steam injection is required in the production process; nitrogen injection is required in the water-gas alternate production process; sometimes different chemical agents need to be injected to meet production needs, such as to eliminate clogging substances around the well wall of oil wells, gas wells or...

Claims

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