Foam scrubbing ball for gas well and preparation method
A technology of bubble volleyball and gas well, which is applied to the field of bubble volleyball for gas wells and its preparation, can solve the problems of fast dissolving speed, low drainage efficiency of gas well, uneven diffusion of bubble volleyball, etc., and achieves the increase of the scope of action, the improvement of efficiency, and the prolongation of dissolution time. Effect
Pending Publication Date: 2022-08-02
PETROCHINA CO LTD
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Problems solved by technology
[0004] In the related technology, due to the fast dissolution rate of the foam drainage agent into the well, the foam volley balls diffuse unevenly in the well and can only play a role locally, resulting in low drainage efficiency of the gas well
Method used
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[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.
[0030] The terms "first", "second", "third" and "fourth" in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.
[0031] The embodiment of the present application provides a foam volleyball for a gas well, the...
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Abstract
The invention provides a foam scrubbing ball for a gas well and a preparation method, and belongs to the technical field of oil and gas production engineering in the petroleum industry. The foam scrubbing ball comprises a coating component, a foaming component and a density regulator, and the mass ratio of the coating component to the foaming component to the density regulator is (40%-68%): (30%-50%): (2%-10%); the coating component is used for forming a skeleton structure with pore channels; the foaming component is used for being dissolved by water for foaming after being released from the pore channels of the skeleton structure; the density regulator is used for regulating the density of the foam scrubbing ball. According to the foam drainage ball, the diffusion range of the foam drainage ball in water in a well can be enlarged, so that the action range of the foam drainage ball is enlarged, and the drainage efficiency of the gas well is improved.
Description
technical field [0001] The application relates to the technical field of oil and gas extraction engineering in the petroleum industry, and in particular to a bubble volleyball for gas wells and a preparation method. Background technique [0002] In the middle and late stages of natural gas well exploitation, the water production of gas wells seriously restricts the production of gas wells. Therefore, it is necessary to discharge the water in the gas wells to ensure the normal production of gas wells. At present, the foam drainage gas production process is the most effective method for conventional gas wells with water. One of the technological measures for drainage and gas recovery. [0003] In the related art, the foam drainage gas recovery process generally adopts the method of injecting foam-discharging agent into the oil pipe in the well, and injecting the foam-discharging agent into the oil pipe in the well. The foam can carry the water at the bottom of the well back t...
Claims
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IPC IPC(8): C09K8/588C09K8/584C09K8/60C09K8/88C09K8/92B29D22/04
CPCC09K8/588C09K8/584C09K8/602C09K8/882C09K8/92B29D22/04
Inventor 马辉运杨智熊杰唐寒冰蒋密陈家晓段蕴琦王庆蓉
Owner PETROCHINA CO LTD