碳酸盐岩缝洞型油藏产水机理及控水措施研究
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摘要
塔河油田4区奥陶系油藏是典型的复杂碳酸盐岩油藏。油藏开发进入高含水之后,油井产液量急剧降低,油井出水问题已经成为该油田开发的突出问题,严重制约着油田采收率。以塔河油田4区主力缝洞单元S65与S48为研究对象,在归纳出缓慢出水型、突发上升型、间歇出水型等3种产水类型油井基础上,利用地震、钻井、测井等资料,结合生产动态特征进一步分析3种类型油井的产水机理。据此提出合理、有效的控水措施:缓慢出水型油井在单元低部位注水保持能量;突发上升型油井应考虑堵水、上返高部位侧钻;间歇出水型油井考虑关井压锥,堵水控制水窜范围和规模。措施效果明显,可指导该类油藏高效开发。
The Ordovician reservoir in block 4 of Tahe Oilfield belongs to typical complex carbonate reservoir.When the reservoir development enters the stage of high water cut,the well fluid production decreases sharply,well outflow water has become a major problem in oilfield development which restricts the oil recovery.Taking S65 and S48 fracture-eavity units in block 4 of Tahe Oilfield for example,based on the summary of three types of water-producing including slow outflow water,sudden outflow water,and intermittent outflow water,this article analyzes corresponding mechanisms of water producing according to production dynamic characteristic by using the drilling,logging,seismic data and so on.The reasonable and effective measures for water controlling is proposed:injecting water to maintain energy in lower part for slow outflow water;adopting the plugging water and sidetracking in the higher part for sudden flow water;adopting shut-in coning control method for intermittent outflow water.These water controlling measures for the scale and scope of water-plugging and water channeling can guide the development of this kind of reservoir effectively.
The Ordovician reservoir in block 4 of Tahe Oilfield belongs to typical complex carbonate reservoir.When the reservoir development enters the stage of high water cut,the well fluid production decreases sharply,well outflow water has become a major problem in oilfield development which restricts the oil recovery.Taking S65 and S48 fracture-eavity units in block 4 of Tahe Oilfield for example,based on the summary of three types of water-producing including slow outflow water,sudden outflow water,and intermittent outflow water,this article analyzes corresponding mechanisms of water producing according to production dynamic characteristic by using the drilling,logging,seismic data and so on.The reasonable and effective measures for water controlling is proposed:injecting water to maintain energy in lower part for slow outflow water;adopting the plugging water and sidetracking in the higher part for sudden flow water;adopting shut-in coning control method for intermittent outflow water.These water controlling measures for the scale and scope of water-plugging and water channeling can guide the development of this kind of reservoir effectively.
引文
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[19]靳佩.塔河油田4区含水上升问题的诊断和分析[J].钻采工艺,2008,31(3):121-123.
[20]李子甲,陈青.塔河油田6区油井合理产量的确定方法研究[J].成都理工大学学报:自然科学版,2005,32(1):58-60.
[2]邹国君.塔河油田超深超稠油藏采油新技术研究[J].西南石油大学学报:自然科学版,2008,30(4):130-134.
[3]艾合买提江.阿不都热和曼,钟建华,Kurt Bucher,等.塔河油田奥陶系碳酸盐岩裂缝成因研究[J].特种油气藏,2009,16(4):21-27.
[4]戚明辉,陆正元,袁帅,等.塔河油田12区块油藏水体来源及出水特征分析[J].岩性油气藏,2009,21(4):115-118.
[5]刘莉,吕艳萍.塔河油田奥陶系油藏流体特征及分布规律研究[C]//塔河油气田开发研究文集.北京:石油工业出版社,2006.
[6]周波,蔡忠贤,李启明,等.应用动静态资料研究岩溶型碳酸盐岩储集层连通性[J].新疆石油地质,2007,28(6):770-772.
[7]焦方正,杨坚.塔河碳酸盐岩油田开发实践与认识[C]//塔河油气田开发研究文集.北京:石油工业出版社,2006.
[8]万仁傅.采油工程手册[M].北京:石油工业出版社,2006.
[9]Graham S A.Collisional successor basins of Western Chi-na:impact of tectonic inheritance on sand composition[J].GSA Bull.1993,105(3):323-344.
[10]任玉林,李江龙,黄孝特.塔河油田碳酸盐岩油藏开发技术政策研究[J].油气地质与采收率,2004,11(5):57-59.
[11]饶丹,马绪杰,贾存善,等.塔河油田主体区奥陶系缝洞系统与油气分布[J].石油实验地质,2007,29(6):589-592.
[12]杨敏.塔河油田4区岩溶缝洞型碳酸盐岩储层井间连通性研究[J].新疆地质,2004,22(2):196-199.
[13]李翎,魏斌,贺铎华.塔河油田奥陶系碳酸盐岩储层的测井解释[J].石油与天然气地质,2002,23(1):49-55.
[14]李宗杰,韩革华.塔河地区碳酸盐岩储层预测技术方法研究[C]//蒋炳南.塔里木盆地北部油气田勘探与开发论文集.北京:地质出版社,2000.
[15]Burkhard M,Sommaruga A.Evolution of the western SwissMolasse Basin:structural relationship with the Alps and theJura baelt[C]//Mascle A.Cenozoic Foreland Basins ofWestern Europe.Geol.Soc.Spec.Publ.No.134,1998:279-298.
[16]王晓东,陈凌.塔河油田下奥陶统溶洞分布规律初步探讨[J].西部探矿工程,2003(8):70-72.
[17]皇甫红英,姜勇,阳国进.塔河四区奥陶系碳酸盐岩原油微观赋存特征[J].新疆地质,2003,21(4):495-496.
[18]张希明.新疆塔河油田奥陶系缝洞型油藏特征[J].石油勘探与开发,2001,28(5):32-36.
[19]靳佩.塔河油田4区含水上升问题的诊断和分析[J].钻采工艺,2008,31(3):121-123.
[20]李子甲,陈青.塔河油田6区油井合理产量的确定方法研究[J].成都理工大学学报:自然科学版,2005,32(1):58-60.
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