缝洞型碳酸盐岩油气藏关键开发指标预测方法及应用

doi:10.3969/j.issn.1006-6535.2021.02.010

特种油气藏 ›› 2021, Vol. 28 ›› Issue (2): 72-77.DOI: 10.3969/j.issn.1006-6535.2021.02.010

缝洞型碳酸盐岩油气藏关键开发指标预测方法及应用

常宝华¹, 李世银², 曹雯¹, 刘志良², 路琳琳¹

1.中国石油勘探开发研究院,北京 100083;
2.中国石油塔里木油田分公司,新疆库尔勒 841000

收稿日期:2019-09-02 修回日期:2020-12-20 出版日期:2021-04-25 发布日期:2022-02-16
作者简介:常宝华(1986—),男,高级工程师,2008年毕业于中国石油大学(北京)石油工程专业,2013年毕业于中国科学院大学流体力学专业,获博士学位,现从事气藏工程相关研究工作。
基金资助:
国家科技重大专项“塔里木盆地碳酸盐岩油气藏提高采收率关键技术示范工程”(2016ZX05053)

Prediction Method of Key Development Indicators of Fracture-cavity Carbonate Reservoirs and Its Application

Chang Baohua¹, Li Shiyin², Cao Wen¹, Liu Zhiliang², Lu Linlin¹

1. Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
2. PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China

Received:2019-09-02 Revised:2020-12-20 Online:2021-04-25 Published:2022-02-16

摘要/Abstract

摘要： 针对缝洞型碳酸盐岩油气藏关键开发指标预测难度大的问题,运用物质平衡理论、井控动态储量评价及已投产储集体动态、静态参数回归分析等方法,建立了由孤立缝洞型油气藏到区块整体的关键开发指标预测方法,可相对准确地预测单井及区块的可动用储量、可采储量、采收率及气举措施增产油气量等关键开发指标。研究方法应用于中古I区块,结果表明:该区块天然能量情况下油、气可采储量分别为85.8×10⁴、26.6×10⁸m³,油、气采收率分别为27.8%、59.2%,区块内未投产储集体可动用储量规模为36.4×10⁸m³,气举措施后油、气采收率分别为32.6%、68.4%,气平均举措施油、气采收率增幅分别为4.8、9.2个百分点。该方法可以有效预测此类油气藏单井储集体及区块的关键开发指标,为开发方案编制及技术政策制订提供依据。

关键词: 碳酸盐岩, 缝洞型, 凝析气藏, 开发指标, 动用储量, 采收率, 中古I区块

Abstract: In view of the heavy difficulties in prediction of key development indicators of fractured-cavity carbonate reservoirs, a prediction method was established for the key development indicators from isolated fracture-cavity reservoirs to the whole block on the basis of the theories of material balance, well-controlled dynamic reserves evaluation, and regression analysis of the dynamic and static parameters of the reservoir bodies in production. With the aid of this method, relatively accurate predication results were obtained for key development indicators of single well, even the whole block, including available reserves, recoverable reserves, recovery efficiency, and gas lift measures for oil enhancement. This method applied to the Zhonggu I Block, and the results indicated that the recoverable oil and gas reserves of the block were 85.8×10⁴m³ and 26.6×10⁸m³ respectively, and the oil and gas (decreasing) recovery rates were 27.8% and 59.2% respectively, the recoverable reserves of remaining reservoir bodies not put in production in the block are 36.4×10⁸m³, the oil and gas recovery rates after gas lift were 32.6% and 68.4% respectively, increased by 4.8、9.2 percentage points. This method can effectively predict the key development indicators of single-well reservoir bodies and blocks of such oil and gas reservoirs, providing a basis for the formulation of development plans and technical policies.

Key words: carbonate rock, fracture-cavity type, condensate gas reservoir, development indicators, produced reserves, recovery rate, Zhonggu I Block

中图分类号:

TE349

常宝华, 李世银, 曹雯, 刘志良, 路琳琳. 缝洞型碳酸盐岩油气藏关键开发指标预测方法及应用[J]. 特种油气藏, 2021, 28(2): 72-77.

Chang Baohua, Li Shiyin, Cao Wen, Liu Zhiliang, Lu Linlin. Prediction Method of Key Development Indicators of Fracture-cavity Carbonate Reservoirs and Its Application[J]. Special Oil & Gas Reservoirs, 2021, 28(2): 72-77.

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缝洞型碳酸盐岩油气藏关键开发指标预测方法及应用

Prediction Method of Key Development Indicators of Fracture-cavity Carbonate Reservoirs and Its Application

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