喇萨杏油田特高含水期剩余油综合挖潜措施优化技术研究
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摘要
大庆喇萨杏油田经过40多年的开发，目前已进入特高含水开发阶段。但仍然是大庆油田开发的主体部分，其年产油量占全油田68.82％，剩余可采储量占全油田80.05％。喇萨杏油田剩余可采储量主要集中在主力油层，基础井网与一次井的剩余可采储量占喇萨杏水驱剩余可采储量的80％左右，而这部分油层已进入特高含水开采阶段，喇萨杏油田基础井网和喇嘛甸一次调整井的含水已高达90％以上。
喇萨杏油田进入高含水期以来，先后实施了两次井网加密调整、注采系统调整、结构调整等重大调整措施，压裂、补孔、堵水措施的力度不断加大，取得了较好的开发效果。随着喇萨杏油田开发过程的不断深入，面临的开发问题更加复杂，剩余油分布日趋零散，挖潜难度增大，不同挖潜措施增产效果相差悬殊，乃至一些挖潜措施出现亏损。因此，针对高含水及特高含水期剩余油分布的多样性和复杂性，精细刻画剩余油的分布，选取经济效益好的措施己成为特高含水期剩余油挖潜的关键，也是我们目前亟待解决的重要课题和攻关方向。为此，开展了特高含水期剩余油综合挖潜措施优化技术研究。
本文紧紧围绕特高含水期剩余油分布潜力及措施优化这一主题，开展了各类油层动用状况、潜力分析、不同挖潜措施适应性及剩余油综合挖潜优化研究。研究表明喇萨杏油田虽然己进入特高含水期，但潜力仍然很大，只要做好精细分析、精细挖潜和精细调整，采取合理的技术措施和手段，就可以最大限度地挖掘剩余油，提高最终采收率。
After more than 40 years exploration in Daqing Lasaxing oilfield, it has entered into extra high watercut development stage at present. But it is still the major part in the exploration of Daqing oilfield. Its oilproduction annually account for 68.82% of its total oil production, and its remaining recoverable reservesaccount for 80.05% of its total oil production. The remaining recoverable reserves in Lasaxing oilfield arein the major reservoirs. The remaining recoverable reserves in the basic well pattern and primary wellaccount for 80% of its remaining recoverable reserves by waterflooding in Lasaxing oilfield, while thesereservoirs have entered extra high water cut exploration stage, the water cut in the basic well pattern inLasaxing oilfield and the primary adjusting well in the Lamadian has reached as high as above 90%.
Since Lasaxing oilfield has entered extra high water cut stage, important adjusting measures, such aswell pattern infilling for two times, adjusting production injection system, adjusting structure, have beenimplemented and the force in fracturing, reperforating and water plugging has been increased all the time,which has achieved good development results. With the exploration of Lasaxing oilfield, there Will be morecomplex problems which will be faced, such as the distribution of remaining oil becoming separated.Considering the complexity and diversity of the reminding oil in high water cut stage and extra high watercut stage, according to different types of reminding oil, we should implement the corresponding tappingmeasures, and optimize the tapping measures in order to improve the results of the measures, which is theimportant topic and orientation we should resolve as soon as possible at present.
Based on the topic of the remaining oil distribution and the measure optimization in extra high watercut stage, this paper make analysis on the development of variety reservoirs and potential development, andmake research on the adaption of different tapping measures and the optimization of remaining oil tapping.The research show that Lasaxing oil field has many potential developments, although it has entered highwater cut stage. If we make fine analysis, fine tapping, fine adjustment, and implement the reasonabletechnological measures and methods, we will make the furthest exploration of the remaining oil, andincrease the final recovery efficiency.
喇萨杏油田进入高含水期以来，先后实施了两次井网加密调整、注采系统调整、结构调整等重大调整措施，压裂、补孔、堵水措施的力度不断加大，取得了较好的开发效果。随着喇萨杏油田开发过程的不断深入，面临的开发问题更加复杂，剩余油分布日趋零散，挖潜难度增大，不同挖潜措施增产效果相差悬殊，乃至一些挖潜措施出现亏损。因此，针对高含水及特高含水期剩余油分布的多样性和复杂性，精细刻画剩余油的分布，选取经济效益好的措施己成为特高含水期剩余油挖潜的关键，也是我们目前亟待解决的重要课题和攻关方向。为此，开展了特高含水期剩余油综合挖潜措施优化技术研究。
本文紧紧围绕特高含水期剩余油分布潜力及措施优化这一主题，开展了各类油层动用状况、潜力分析、不同挖潜措施适应性及剩余油综合挖潜优化研究。研究表明喇萨杏油田虽然己进入特高含水期，但潜力仍然很大，只要做好精细分析、精细挖潜和精细调整，采取合理的技术措施和手段，就可以最大限度地挖掘剩余油，提高最终采收率。
After more than 40 years exploration in Daqing Lasaxing oilfield, it has entered into extra high watercut development stage at present. But it is still the major part in the exploration of Daqing oilfield. Its oilproduction annually account for 68.82% of its total oil production, and its remaining recoverable reservesaccount for 80.05% of its total oil production. The remaining recoverable reserves in Lasaxing oilfield arein the major reservoirs. The remaining recoverable reserves in the basic well pattern and primary wellaccount for 80% of its remaining recoverable reserves by waterflooding in Lasaxing oilfield, while thesereservoirs have entered extra high water cut exploration stage, the water cut in the basic well pattern inLasaxing oilfield and the primary adjusting well in the Lamadian has reached as high as above 90%.
Since Lasaxing oilfield has entered extra high water cut stage, important adjusting measures, such aswell pattern infilling for two times, adjusting production injection system, adjusting structure, have beenimplemented and the force in fracturing, reperforating and water plugging has been increased all the time,which has achieved good development results. With the exploration of Lasaxing oilfield, there Will be morecomplex problems which will be faced, such as the distribution of remaining oil becoming separated.Considering the complexity and diversity of the reminding oil in high water cut stage and extra high watercut stage, according to different types of reminding oil, we should implement the corresponding tappingmeasures, and optimize the tapping measures in order to improve the results of the measures, which is theimportant topic and orientation we should resolve as soon as possible at present.
Based on the topic of the remaining oil distribution and the measure optimization in extra high watercut stage, this paper make analysis on the development of variety reservoirs and potential development, andmake research on the adaption of different tapping measures and the optimization of remaining oil tapping.The research show that Lasaxing oil field has many potential developments, although it has entered highwater cut stage. If we make fine analysis, fine tapping, fine adjustment, and implement the reasonabletechnological measures and methods, we will make the furthest exploration of the remaining oil, andincrease the final recovery efficiency.
引文
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[2] 林立，麻成斗，冷延明等．高含水后期三次加密调整优化布井研究[J]．大庆石油地质与开发，2002，21(1)：40-42
[3] 张宝胜，张淑洁，钟玲．喇萨杏油田各类油层水洗状况[J]．大庆石油地质与开发，2002，21(6)：40-43
[4] 赵伟．喇嘛甸油田储层动用状况及综合调整方向[J]．大庆石油地质与开发，2002，21 (2)：26-28
[5] 赵翰卿．储层非均质体系、砂体内部建筑结构和流动单元研究思路探讨[J]．大庆石油地质与开发，2002，21(6)：16-18
[6] 赵翰卿．松辽湖盆大型河流—三角洲沉积的层理类型探讨[J]．大庆石油地质与开发，1994，13(1)：43-45
[7] 陈程，孙义梅．厚油层内部夹层分布模式及对开发效果的影响[J]．大庆石油地质与开发，2003，22(2)：24-27
[8] 计秉玉，李彦兴．喇萨杏油田高含水期提高采收率的主要技术对策[J]．大庆石油地质与开发，2004，23(5)：47-53
[9] 刘春林，宋永，薛海燕．喇萨杏油田隔层应用条件研究[J]．大庆石油地质与开发，1994，13(1)：46-49
[10] 谢艳艳．油井措施效益评价方法的建立与应用[J]．大庆石油地质与开发，2005，24(4)：33-34
[11] 李敬松，孙义新，熊海灵．油田开发经济评价[M]．北京：石油工业出版社，1997：55-79
[12] 毕生．灰色预测方法在油井增产措施评价中的应用[J]．大庆石油地质与开发，2003，22(4)：37-39
[13] 魏国璋．密闭取心检查井岩心水洗判断方法研究[J]．大庆石油地质与开发，1995，14(4)：38-39
[14] 瞿国忠．密闭取心检查井对油层水洗状况的认识[J]．大庆石油地质与开发，1992，11(2)：22-27
[15] 张景存．提高采收率方法研究[M]．北京：石油工业出版社，1991．118-122
[16] 计秉玉，袁庆峰．垂向非均质油层周期注水力学机理研究[J]．石油学报．1993，14(2)：75-80
[17] 胡博仲．国外近期采油工程技术[M]．哈尔滨：黑龙江人民出版社，1995
[18] 胡博仲．非均质多层砂岩油田分层开采技术(第一版)[M]．北京：石油工业出版社，2000
[19] 王宏伟，李景禄．喇嘛甸油田特高含水期油田开发理论与实践(第1版)[M]．北京：石油工业出版社，2003
[20] 谢俊，张金亮．剩余油描述与预测(第1版)[M]．北京：石油工业出版社，2003
[21] 刘彦亮．喇嘛甸油田北块萨尔图油层调整挖潜方法[J]．油气田地面工程，2005，24(3)：10-11
[22] 俞启泰，赵明，林志芳．水驱砂岩油田含水变化规律与采收率多因素分析[J]．石油勘探与开发，1992，26(3)：58-65
[23] 石成方，程保庆．产液结构调整及控制含水上升速度[J]．大庆石油地质与开发，1992，23(5)：71—75
[24] 唐曾雄．大型多油层非均质砂岩油田提高注水开发效果的措施，大庆科技论文集[C]．石油工业出版社，1989
[25] 陆建林，李国强，樊中海等．高含水期油田剩余油分布研究[J]．石油学报，2001，22(05)：48-53
[26] Jian F.X., Chork C.Y., Taggart I.J. A Genetic approach to the prediction of petrophysicalproperties [J]. Joural of Petroleum Geology, 1994, 17(1): 71-88
[28] Amaefule J.O., Mehmet A., Djebbar T., etal. Enhanced reservoir description: usingcoreand log data to identify hy2 draulic(flow) unit sand predict permeability inuncoredintervals/wells[A]. Formation Evaluation and Reservoir Geology Proceedings SPEAnnual Technical conference and Exhibition[C]. 1993. 205-220
[29] Canas J.A., Malik E.A.. Characterization of flow unit sin sand stone reservoirs: LaCirafield, Colombia, South America [A]. Proceedings of the Permian Basin Oil & GasRecovery Conference 1994 [C]. SPE, Richardson, T.X., USA, 1994. 883-892
[30] Davies D.K., Vessell R.K.. Flow unit charact erization of ashall owshelf carbonatereservoir: North Robert son unit, West Texas [A]. Proceedings SPE SymposiumonImproved Oil Recovery[C]. USA, 1996. 295-304
[31] Davies D.K., Vessell R.K., Bernal GMC. Flow unit modeling incomplex reservoirs [A]. 1996 AAPG Annual Convention [C]. San Diego, C.A.. 1996. 336
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