摘要
针对传统储量研究含气面积边界确定过程操作复杂、效率低、周期长且工作量大的难题,提出一种基于MATLAB平台“分级约束”的致密砂岩气藏含气面积边界快递自动圈定方法。基于井距之半、单井控制范围、储层物性以及砂体展布的多重约束条件,建立从空间到属性、从宏观到微观的多维度、多尺度、多因素耦合和参数可变的致密砂岩气藏含气面积边界圈定方法体系。在该设计思想指导下,编制了一套由计算机自动完成的“分级约束”致密砂岩气藏含气面积确定程序。利用该方法对延安气田YQ井区山2段2018年已提交探明地质储量含气面积进行对比研究表明:该方法确定的含气面积边界形态与实际提交储量含气面积边界吻合程度高,误差小。该方法具有操作简单方便、计算速度快、精度高且实用的优点,可以作为储量精细研究的一种有效辅助手段。
Gas-bearing Area is one of the most important parameters in the study of Oil and Gas Geological Reserve.Considering the problems of complicated operation,long period,slow efficiency,inconvenient maintenance and heavy workload,this paper gives an automatic fast method to delineate gas-bearing area boundary of tight Sandstone gas Reserve under the constraint of classified levels based on MATLAB Platform.The method is based on four classified levels constrains,i.e.,half of well-spacing,well control area of sing well,physical property of reservoir,distribution of sand bodies.As a result,the method system of delineated gas-bearing area boundary is established from space to property,macro to micro through multi-dimension,multi-scale and multi-factor coupling and variable parameter.Then,under the guidance of this design idea,a set of program to delineate gas-bearing area boundary under the constraint of classified levels have been developed using the method of computation geometry based on MATLAB Platform.A contrastive study of gas-bearing area in YQ Block Yan'an gas field between 2018 submitted reserve result and our automatic fast method shows that the automatic boundary coincides with 2018 submitted result with minor error.It proved that the method has the advantages of simple and convenient operation,fast calculation speed,high accuracy.This can be used as a useful supplementary way to detailed study on geological reserves.
作者
刘鹏
LIU Peng(Research Institute of Shaanxi Yanchang Petroleum Co., Ltd, Xi'an 710000, China)
出处
《物探化探计算技术》
CAS
2020年第3期392-400,共9页
Computing Techniques For Geophysical and Geochemical Exploration
基金
全国矿产资源国情调查与综合评价(WKZB1911BJM500351)
国土资源部项目(2017YQZYPJ01,2017YQZYPJ0110)。
关键词
地质储量
含气面积
分级约束
延安气田
geological reserves
gas-bearing area
the constraint of classified levels
Yan'an Gasfield
