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四川盆地海相碳酸盐岩天然气资源量储量转换规律
战薇芸1 刘 辉1 陈 尘1 李海涛1 吴雪峰1 未 勇2
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作者单位:1.中国石油西南油气田公司勘探开发研究院2.中国石油西南油气田公司
中文关键字:四川盆地 海相碳酸盐岩 资源潜力 转换规律 储量参数 储量升级转换率 新增储量预测
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中文摘要:分析油气资源潜力、预测新增探明储量规模是合理编制储量、产量规划方案、制定中长期发展战略的基础。根据资源量、储量转换规律可以进一步评价、落实资源升级潜力。通过研究已升级气藏储量转换规律,分析各项储量计算参数与储量在升级转换中的相关性,明确影响储量升级转换的关键因素并计算转换率。根据已发现圈闭,利用圈闭钻探成功率、储量计算参数升级转换率测算资源量、储量升级转换率,最终预测新增探明储量规模。该方法以资源量、储量升级规律为依据,以目前勘探发现为基础,可以较为精确的预测新增储量规模。研究结果表明:含气面积是引起储量升级变化的最关键因素,其次是有效储层厚度、有效孔隙度、含气饱和度等参数。储量升级中,构造气藏含气面积变化最小,岩性气藏含气面积变化最大,储量丰度变化相对较小。四川盆地海相碳酸盐岩从资源量到预测储量转换率43%左右,三级储量转换率60%75%根据资源量、储量升级转换率,以可升级圈闭为基础,预测四川盆地海相碳酸盐岩可新增探明储量约1.8×1012 m3
英文摘要:Analyzing oil and gas resource potential and forecasting the newly-increased proved reserves is the basis for oilfield companies to reasonably compile reserves, production plans and formulate strategic development plans. The upgrade potential of oil and gas resources could be evaluated and confirmed by researching theconversion rule of reservesfrom resources. Based on the reserve and reserve calculation parameters upgrading conversion rate of gas reservoirs with upgrading sequence of "Inferred-Indicated-Proved Reserves", the law of upgrading and transformation of resources and reserves is studied by correlation method, and the key factors influencing upgrading and transformation of reserves are clarified. The upgrading conversion rate of resources and reserves is calculated according to the upgrading conversion rate of each factor, and then the newly-increased proven reserves are predicted. Based on the historical rule of reserve upgrading from resources and current exploration discovery, this method can accurately predict the newly-increased reserves amount. Results show that: ① Gas-bearing area is the most important factor to cause reserve upgrading, followed by effective reservoir thickness, effective porosity, gas saturation and other factors. ② There are some differences in gas bearing area variation rules among different types of gas reservoirs in reserve upgrading. The gas bearing area variation of structural gas reservoirs is the smallest and that of lithologic gas reservoirs is the largest. The reserve abundance has little change. ③ The conversion rate of reserves from resources is about 43%, and the conversion rate of reserves at all levels is about 60%-75%. ④ According to the conversion rate of reserves upgrading from resource and based on the upgradable trap resources, it is predicted that the newly proved reserves will be about 18000×108m3 in the near future.
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国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
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