A Method for Predicting Development Index of Steam-Assisted Gravity Drainage in New Development Area
A technology that assists gravity and develops indicators. It is applied in forecasting, data processing applications, instruments, etc., and can solve problems such as the inability to guarantee the accuracy of output forecasting and output forecasting.
Active Publication Date: 2020-06-12
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
Therefore, for undeveloped new blocks adjacent to developed areas, it is impossible to use numerical simulation methods to predict their production without the actual geological model of the new area
In addition, even if there is a geological model of a new area, because it is undeveloped and has no production history, it is impossible to obtain a corrected reservoir numerical model that can more accurately reflect the development characteristics through history fitting like the developed blocks, that is, The accuracy of production prediction cannot be guaranteed by directly using the geological model of the new area without historical fitting
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[0048] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0049] The present invention proposes a method for predicting the development index of steam-assisted gravity drainage in a new development area, which includes the following steps:
[0050] 1) Classify the developed areas adjacent to the new development area according to their static characteristic parameters.
[0051] For developed areas, there are abundant static data such as reservoir physical parameters, fluid parameters, core samples, and logging interpretation results. Through the statistics and analysis of the static characteristic parameters of the developed areas, the developed areas can be classified according to the static characteristic parameters, that is, the production wells in the developed areas can be classified from the perspective of static geological characteristics.
[0052] In the present invention, there are two selected stat...
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The invention relates to a method for predicting steam assisted gravity drainage development indexes of new development areas. The method comprises the following steps of: 1) carrying out category classification on adjacent developed areas according to static feature parameters; 2) selecting a plurality of typical wells in a static feature category, and respectively establishing numerical mechanism models; 3) selecting development feature parameters, and solving a development feature parameter of each typical well by utilizing the numerical mechanism model; 4) calculating a correction coefficient between the development feature parameter solved by the numerical mechanism model and practical production; 5) carrying out same static feature parameter category classification on a new development area, and establishing a numerical mechanism model of single well pairs according to related static parameters in a range in which the location of a to-be-released well of the new development area;6) calculating development feature parameters of each single well pair under different static feature parameter categories; 7) correcting the result of each development feature parameter; 8) obtaining development indexes after single well correction of the new development area; and 9) obtaining a whole-area development index of the new development area.
Description
technical field [0001] The invention relates to a method for predicting the development index of steam-assisted gravity drainage in a new development zone, belonging to the technical field of oil and gas field development. Background technique [0002] Numerical simulation technology is an important technical means to predict the steam assisted gravity drainage (SAGD) production of oil sand dual horizontal wells. Use geological modeling software to establish the geological model of the target block, and use the reservoir numerical simulation software to obtain the reservoir value that can accurately reflect the actual production effect and development level of the target block based on the actual production dynamic parameters and with the help of history matching method Model. On this basis, the numerical model can be used to predict the subsequent production. It can be seen that in order to reasonably predict the production of the developed target block, two conditions ne...
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IPC IPC(8): G06F30/20G06Q10/04G06Q10/06G06Q50/02
Inventor 卢川郑强田冀谭先红李延杰贾振郑伟刘新光袁忠超孙依依王帅
Owner CHINA NAT OFFSHORE OIL CORP