大气顶油藏气窜规律与全寿命开发策略
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摘要
为明确气顶气驱油藏生产规律,提高该类油藏开发效果,以渤海锦州A油田大气顶油藏为例,通过岩心、古地貌、试井和生产监测等资料的综合应用,分析影响油井气窜的主要因素,得出3类气窜模式的划分界限。研究认为,气窜对油井产能影响较大;气顶指数、储层非均质性和水平段垂向位置是影响气窜规律的主要因素。通过提出分气窜模式、分开发阶段全寿命开发策略,锦州A油田大气顶油藏实现连续7 a年产油量大于100×104m~3/a,综合气油比小于800 m~3/m~3,预计可提高采收率3.1个百分点。该研究为同类大气顶油藏的开发提供了一定的借鉴。
Jinzhou A Oilfield in Bohai is taken to clarify and improve the production performance of gas-cap drive oil reservoir.Core test,paleogeomorphology,well test,production monitoring and other data are comprehensively used to analyze the key factors influence gas channeling and determine the classification boundaries of 3 gas channeling modes.Research indicates that the oil well production capacity is greatly dependent on gas channeling.The key factors affect gas channeling include gas-cap index,reservoir heterogeneity and lateral wellbore position.The fulllife development strategies for different development stages are proposed by gas channeling pattern classification.The oil production of Jinzhou A Oilfield with large gas-cap exceeds 100×104 m~3/a for 7 years,the composite gasoil ratio is less than 800 m~3/m~3 and the predicted recovery factor can be enhanced by 3.1 percentage points.This research could provide certain reference for the development of similar reservoirs with large gas-cap.
Jinzhou A Oilfield in Bohai is taken to clarify and improve the production performance of gas-cap drive oil reservoir.Core test,paleogeomorphology,well test,production monitoring and other data are comprehensively used to analyze the key factors influence gas channeling and determine the classification boundaries of 3 gas channeling modes.Research indicates that the oil well production capacity is greatly dependent on gas channeling.The key factors affect gas channeling include gas-cap index,reservoir heterogeneity and lateral wellbore position.The fulllife development strategies for different development stages are proposed by gas channeling pattern classification.The oil production of Jinzhou A Oilfield with large gas-cap exceeds 100×104 m~3/a for 7 years,the composite gasoil ratio is less than 800 m~3/m~3 and the predicted recovery factor can be enhanced by 3.1 percentage points.This research could provide certain reference for the development of similar reservoirs with large gas-cap.
引文
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[10]刘顺生,方甲中,李晓山,等.利用气顶能量合理开发扎纳若尔油藏的可行性[J].新疆石油地质,2003,24(6):594-595.
[11]余忠,赵会杰,李卫京,等.正确选择气顶油藏高效开发模式[J].石油勘探与开发,2003,30(2):70-72.
[12]杨庆红,童凯军,张迎春,等.利用水平井开发大气顶窄油环油藏研究与实践[J].中国海上油气,2011,23(5):313-317.
[13]张迎春,童凯军,葛丽珍,等.水平井开发大气顶弱边水油藏早期采油速度研究[J].石油天然气学报,2011,33(5):106-110.
[14]张安刚,范子菲,宋珩,等.计算凝析气顶油藏油气界面移动距离的新方法[J].油气地质与采收率,2015,22(1):102-105.
[15]李进步,王继平,王艳,等.致密砂岩储层中气体渗流规律实验研究[J].大庆石油地质与开发,2017,36(6):154-158.
[16]杨浩珑,时迎,魏春光.阿姆河右岸气藏主控因素[J].油气地质与采收率,2017,24(4):61-66.
[17]袁庆峰,庞彦明,杜庆龙,等.砂岩油田特高含水期开发规律[J].大庆石油地质与开发,2017,36(3):49-55.
[18]陈元千,吕恒宇,傅礼兵,等.注水开发油田加密调整效果的评价方法[J].油气地质与采收率,2017,24(6):60-64.
[2]刘维霞,吴义志,李文静,等.断块油藏气顶-边水双向驱油藏筛选标准[J].特种油气藏,2016,23(1):104-108.
[3]廉培庆,李琳琳,程林松.气顶边水油藏剩余油分布模式及挖潜对策[J].油气地质与采收率,2012,19(3):101-103.
[4]曹海丽,张祥忠,陈礼.小油环大气顶油藏高效开发及稳产策略[J].特种油气藏,2016,23(2):1-4.
[5]李莲仙.对气顶油藏开发的研究[M].北京:石油工业出版社,1984:15-29.
[6]卢福君.双台子油田大气顶窄油环油藏开发实践[J].特种油气藏,2007,14(增刊1):63-65.
[7]伍友佳.辽河双台子油气藏气顶驱开采特征及气窜模式[J].天然气工业,2000,20(6):76-79.
[8]徐长贵,周心怀,邓津辉,等.渤海锦州25-1大型轻质油气田的发现与启示[J].中国石油勘探,2010,7(1):34-39.
[9]周心怀,余一欣,魏刚,等.渤海辽东湾海域JZ25-1S转换带与油气成藏的关系[J].石油学报,2008,29(6):837-840.
[10]刘顺生,方甲中,李晓山,等.利用气顶能量合理开发扎纳若尔油藏的可行性[J].新疆石油地质,2003,24(6):594-595.
[11]余忠,赵会杰,李卫京,等.正确选择气顶油藏高效开发模式[J].石油勘探与开发,2003,30(2):70-72.
[12]杨庆红,童凯军,张迎春,等.利用水平井开发大气顶窄油环油藏研究与实践[J].中国海上油气,2011,23(5):313-317.
[13]张迎春,童凯军,葛丽珍,等.水平井开发大气顶弱边水油藏早期采油速度研究[J].石油天然气学报,2011,33(5):106-110.
[14]张安刚,范子菲,宋珩,等.计算凝析气顶油藏油气界面移动距离的新方法[J].油气地质与采收率,2015,22(1):102-105.
[15]李进步,王继平,王艳,等.致密砂岩储层中气体渗流规律实验研究[J].大庆石油地质与开发,2017,36(6):154-158.
[16]杨浩珑,时迎,魏春光.阿姆河右岸气藏主控因素[J].油气地质与采收率,2017,24(4):61-66.
[17]袁庆峰,庞彦明,杜庆龙,等.砂岩油田特高含水期开发规律[J].大庆石油地质与开发,2017,36(3):49-55.
[18]陈元千,吕恒宇,傅礼兵,等.注水开发油田加密调整效果的评价方法[J].油气地质与采收率,2017,24(6):60-64.