管窜影响下的复杂碳酸盐岩油藏产水特征分析
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摘要
针对伊拉克Ahdeb油田下白垩统复杂碳酸盐岩油藏因套管外窜流、高渗条带及多层合采等因素造成出水情况复杂,含水上升率较高的问题,建立了精细复杂碳酸盐岩油藏精细模型。在此基础上,采用实际典型产水曲线标定数模曲线的方式,结合无因次时间得到不同管窜情况下(水泥环与储层间的第二界面破损位置位于纯水层、油水过渡带和纯油层)的套管外窜流&底水锥进和纯套管外窜流的产水特征曲线。根据建立的产水特征曲线对油藏出水类型和机理进行了识别与分析。结果表明:产水特征曲线能够有效判明油藏出水类型,避免过多进行井下PLT测试等工作;出水机理分析与现场先导试验结果一致,研究结果为油藏稳油控水提供了可靠的措施对策依据。
In view of the complex type of water-producing and situation about faster rate of water cut increasing in lower cretaceous multi-layered carbonate reservoir of Ahedb field in Iraq including casing channeling,high permeability zone and commingled production,a fine reservoir model which can characterize lower cretaceous multilayered carbonate reservoir had be built. On this basis,various simulation curves would be calibrated by the actual typical production curves to obtain the different typical water production curve including casing channeling with bottom aquifer coning and single casing channeling( including different position of casing channeling: pure water zone、oil-water transition zone and pure oil zone) with dimensionless time,which would be used to distinguish and analyze reservoir water-producing type and mechanism. The results showed that,the typical water production curve could accurately discern water production type to avoid too much downhole PLT and other tests,meanwhile,the validity of mechanism analysis has been proved by Pilot test,which can provide reliable basis for stabilizing oil and controlling water of vertical wells.
In view of the complex type of water-producing and situation about faster rate of water cut increasing in lower cretaceous multi-layered carbonate reservoir of Ahedb field in Iraq including casing channeling,high permeability zone and commingled production,a fine reservoir model which can characterize lower cretaceous multilayered carbonate reservoir had be built. On this basis,various simulation curves would be calibrated by the actual typical production curves to obtain the different typical water production curve including casing channeling with bottom aquifer coning and single casing channeling( including different position of casing channeling: pure water zone、oil-water transition zone and pure oil zone) with dimensionless time,which would be used to distinguish and analyze reservoir water-producing type and mechanism. The results showed that,the typical water production curve could accurately discern water production type to avoid too much downhole PLT and other tests,meanwhile,the validity of mechanism analysis has been proved by Pilot test,which can provide reliable basis for stabilizing oil and controlling water of vertical wells.
引文
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6 Yang Z M.Clarifying and improving the application of waterflood analytical methods in X-plot conditions-from empirical approach to analytical approach.SPE Western Regional Meeting.Bakersfield:Society of Petroleum Engineers,2017:SPE185726
7 Yang W,Wattenbarger R A.Water coning calculations for vertical and horizontal wells.SPE Annual Technical Conference and Exhibition.Dallas:Society of Petroleum Engineers,1991:SPE 22931
8 Chan K S.Water control diagnostic plots.SPE Annual Technical Conference and Exhibition.Dallas:Society of Petroleum Engineers,1995:SPE30775
9 Eltsov T,Dorovsky V,Golikov N,et al.Measurement of oil-water ratio and formation porosity using dielectric spectroscopy in borehole environments.SPE Russian Oil and Gas Exploration&Production Technical Conference and Exhibition.Moscow:Society of Petroleum Engineers,2014:SPE171193
10 Yortsos Y C,Choi Y M,Yang Z M,et al.Analysis and interpretation of the water-oil ratio in waterfloods.SPE Annual Technical Conference and Exhibition.San Antonio:Society of Petroleum Engineers,1997:SPE38869
11 Yang Z M.A method for pattern recognition of WOR plots in waterflood management.SPE Western Regional Meeting.Ershaghi:Society of Petroleum Engineers,2005:SPE93870
12 Al-Hasani M A,Al-Khayari S R,Al-Maamari R,et al.Diagnosis of excessive water production in horizontal wells using WOR plots.International Petroleum Technology Conference.Kuala Lumpur:International Petroleum Technology Conference,2008:IPTC11958
13鄢捷年.一种定量测定油藏岩石润湿性的新方法.石油勘探与开发,2001;28(2):83-86Yan Jienian.A new method for determination of wettability of reservoir rocks.Petroleum Exploration and Development,2001;28(2):83-86
14 Turner A K.Challenges and trends for geological modeling and visualization.Bullentin of Engineering Geology and the Environment,2006;65(2):109-127
15 Al-Ameri T K,Al-Mimar H S,Zumberge J.Petroleum system modeling and risk assessments of Ad'daimah oil field:A case study from Mesan Governorate,south Iraq.Arabian Journal of Geosciences,2015;8(8):5739-5766
16 Soleimani M,Shokri B J.3D static reservoir modeling by geostatistical techniques used for reservoir characterization and data integration.Environmental Earth Sciences,2015;74(2):1403-1414
17 Egbe T G,Appah D.Water coning diagnosis using spectral analysis.Nigeria Annual International Conference and Exhibition.Abuja:Society of Petroleum Engineers,2005:SPE98816
18 Tabatabaei M,Ghalambor A.Optimization of completion interval to minimize water coning.Europec/Eage Conference and Exhibition.Rome:Society of Petroleum Engineers,2008:SPE113106
19 Namani M,Asadollahi M,Haghighi M.Investigation of water coning phenomenon in Iranian carbonate fractured reservoirs.International Oil Conference and Exhibition in Mexico.Veracruz:Society of Petroleum Engineers,2007:SPE108254
2 Shimada M,Yildiz T.Predicting water influx from common aquifers.Europec/Eage Conference and Exhibition.Amsterdam:Society of Petroleum Engineers,2009:SPE120897
3 Lo K K,Warner Jr H R,Johnson J B.A study of the post-breakthrough characteristics of waterfloods.SPE California Regional Meeting.Ventura:Society of Petroleum Engineers,1990:SPE20064
4俞启泰,靳红伟.关于广义水驱特征曲线.石油学报,1995;16(1):61-70Yu Qitai,Jin Hongwei.Generalized water displacement curve.Acta Petrolei Sinica,1995;16(1):61-70
5俞启泰.一种广义水驱特征曲线.石油勘探与开发,1998;25(5):48-50Yu Qitai.A new generalized water drive curve.Petroleum Exploration and Development,1998;25(5):48-50
6 Yang Z M.Clarifying and improving the application of waterflood analytical methods in X-plot conditions-from empirical approach to analytical approach.SPE Western Regional Meeting.Bakersfield:Society of Petroleum Engineers,2017:SPE185726
7 Yang W,Wattenbarger R A.Water coning calculations for vertical and horizontal wells.SPE Annual Technical Conference and Exhibition.Dallas:Society of Petroleum Engineers,1991:SPE 22931
8 Chan K S.Water control diagnostic plots.SPE Annual Technical Conference and Exhibition.Dallas:Society of Petroleum Engineers,1995:SPE30775
9 Eltsov T,Dorovsky V,Golikov N,et al.Measurement of oil-water ratio and formation porosity using dielectric spectroscopy in borehole environments.SPE Russian Oil and Gas Exploration&Production Technical Conference and Exhibition.Moscow:Society of Petroleum Engineers,2014:SPE171193
10 Yortsos Y C,Choi Y M,Yang Z M,et al.Analysis and interpretation of the water-oil ratio in waterfloods.SPE Annual Technical Conference and Exhibition.San Antonio:Society of Petroleum Engineers,1997:SPE38869
11 Yang Z M.A method for pattern recognition of WOR plots in waterflood management.SPE Western Regional Meeting.Ershaghi:Society of Petroleum Engineers,2005:SPE93870
12 Al-Hasani M A,Al-Khayari S R,Al-Maamari R,et al.Diagnosis of excessive water production in horizontal wells using WOR plots.International Petroleum Technology Conference.Kuala Lumpur:International Petroleum Technology Conference,2008:IPTC11958
13鄢捷年.一种定量测定油藏岩石润湿性的新方法.石油勘探与开发,2001;28(2):83-86Yan Jienian.A new method for determination of wettability of reservoir rocks.Petroleum Exploration and Development,2001;28(2):83-86
14 Turner A K.Challenges and trends for geological modeling and visualization.Bullentin of Engineering Geology and the Environment,2006;65(2):109-127
15 Al-Ameri T K,Al-Mimar H S,Zumberge J.Petroleum system modeling and risk assessments of Ad'daimah oil field:A case study from Mesan Governorate,south Iraq.Arabian Journal of Geosciences,2015;8(8):5739-5766
16 Soleimani M,Shokri B J.3D static reservoir modeling by geostatistical techniques used for reservoir characterization and data integration.Environmental Earth Sciences,2015;74(2):1403-1414
17 Egbe T G,Appah D.Water coning diagnosis using spectral analysis.Nigeria Annual International Conference and Exhibition.Abuja:Society of Petroleum Engineers,2005:SPE98816
18 Tabatabaei M,Ghalambor A.Optimization of completion interval to minimize water coning.Europec/Eage Conference and Exhibition.Rome:Society of Petroleum Engineers,2008:SPE113106
19 Namani M,Asadollahi M,Haghighi M.Investigation of water coning phenomenon in Iranian carbonate fractured reservoirs.International Oil Conference and Exhibition in Mexico.Veracruz:Society of Petroleum Engineers,2007:SPE108254