Method and device for determining injection velocity in indoor constant velocity experiment
A technology of injection speed and speed, which is applied in the field of determination of injection speed in indoor constant speed experiments, and can solve problems such as lack of guiding significance, increased injection volume, and excessive injection volume
Active Publication Date: 2020-09-08
PETROCHINA CO LTD +1
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Problems solved by technology
[0003] Compared with the actual site, the injection volume is too large, it can be seen that there are certain problems in the indoor constant speed experiment
That is to say, although the indoor experiment guarantees the injection linear speed, it cannot guarantee the annual injection PV number, which belongs to strong injection and strong production, and the relative injection volume increases greatly, resulting in invalid simulation and waste of resources. The high injection volume makes the experimental results lack the actual field Guiding significance
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[0075] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0076] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may a...
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Abstract
The invention discloses a method and an apparatus for determining the injection speed of an indoor constant speed experiment. The method comprises: obtaining an on-site displacement parameter; according to the on-site displacement parameter, calculating an indoor constant speed water displacement experiment time T[water] and a constant speed polymer surfactant displacement experiment time T[polymer surfactant]; carrying out a constant speed water displacement experiment on experiment rock core to obtain a constant speed water displacement speed range; according to the constant speed water displacement speed range, determining the reasonable constant speed water displacement speed V[optimal-water]; carrying out a constant speed polymer surfactant displacement experiment on experiment rock core to obtain a constant speed polymer surfactant displacement speed range; according to the on-site displacement parameter, the reasonable constant speed water displacement speed V[optimal-water] andthe constant speed polymer surfactant displacement speed range, determining the reasonable constant speed polymer surfactant displacement speed V[optimal-polymer surfactant]; and carrying out an indoor constant speed experiment by using the V[optimal-water] and the V[optimal-polymer surfactant], and comparing the indoor constant speed experiment result to the on-site experiment effect.
Description
technical field [0001] The invention belongs to the field of oilfield development, and in particular relates to a method and a device for determining an injection rate in an indoor constant-velocity experiment. Background technique [0002] At present, indoor flooding experiments are mainly based on constant-velocity experiments, which is an experimental method in which the displacement speed is constant during the displacement process and the cumulative injection amount of the displacement agent can be guaranteed. According to the on-site daily advance speed, such as 1m / d, when using the core simulated by the conventional experimental size (300mm long, 45mm wide, and 45mm thick), the actual daily advance is 1m, and 3.3PV liquid is injected every day, and the daily injection volume is 3.3PV. [0003] Compared with the actual site, the injection volume is too large, which shows that there are certain problems in the indoor constant speed experiment. That is to say, although ...
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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 皮彦夫刘丽朱卓岩张晓萍隋彦芬单高军张振兴赵欣王德伟张乃元
Owner PETROCHINA CO LTD