Superheated steam huff and puff heat utilization efficiency evaluation method and system
A technology of superheated steam and evaluation method, which is applied in the fields of earthwork drilling, special data processing application, and mining fluid, etc. It can solve the problems of not considering the steam overburden effect, the heat utilization efficiency of superheated steam injection is not accurate enough, etc., and achieve optimal steam injection The effect of the parameter
Inactive Publication Date: 2018-12-07
PETROCHINA CO LTD
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The Marx-Langenheim method is currently the most commonly used calculation method for heat utilization efficiency, but this method is derived based on the injection of ordinary wet steam, and does not consider the influence of steam overlay, which leads to the calculation of heat utilization efficiency of superheated steam injection using this method. Not efficient enough
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[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0038] Please refer to figure 1 As shown, an embodiment of the present invention specifically provides a method for evaluating heat utilization efficiency of superheated steam huff and puff, and the method includes: S101 Obtaining the static parameters of the oil reservoir and steam injection parameters; S102 Establishing a calculation model for the heat dissipation range of the superheated area according to the principle of energy conservation , the heat dissipation range calculation model of the steam zone and the heat dissipation range calculation model of the hot...
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The invention provides a superheated steam huff and puff heat utilization efficiency evaluation method and system. The method comprises the following steps that oil deposit static parameters and steaminjection parameters are obtained; according to the principle of conservation of energy, an overheated zone heat dissipation range calculation model, a steam zone heat dissipation range calculation model and a hydrothermal zone heat dissipation range calculation model are established; a superheated steam huff and puff heat utilization efficiency model is established based on the overheated zone heat dissipation range calculation model, the steam zone heat dissipation range calculation model and the hydrothermal zone heat dissipation range calculation model; and superheated steam huff and puffheat utilization efficiency is obtained based on the oil deposit static parameters, the steam injection parameters and the superheated steam huff and puff heat utilization efficiency model.
Description
technical field [0001] The invention relates to the field of oil and gas field development engineering, in particular to a method and system for evaluating heat utilization efficiency of huff and puff of superheated steam considering the effect of steam overlay. Background technique [0002] Compared with ordinary wet steam, superheated steam under the same pressure contains more heat and larger specific volume, and has a larger heating range in the oil layer, and the superheated steam has stronger physical and chemical reactions with reservoir minerals and fluids. This makes its effect on improving the seepage environment of the reservoir more significant. Therefore, superheated steam injection has gradually become one of the effective measures to improve the thermal recovery development effect of heavy oil reservoirs. In the process of superheated steam injection, part of the heat injected from the wellhead is lost to the formation around the wellbore through the tubing s...
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IPC IPC(8): E21B43/24E21B49/00G06F17/50
CPCE21B43/24E21B49/00G06F30/20
Inventor 何聪鸽许安著赵伦罗二辉
Owner PETROCHINA CO LTD