地球化学指纹技术在油气藏连通性及配产研究中的应用——以涠洲12-1油田和东方1-1气田为例
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摘要
气相色谱指纹及碳同位素指纹分析是近几年发展起来的一种油藏地球化学研究方法。该方法通过分析原油的全烃气相色谱指纹化合物组成或者天然气碳同位素组成的变化规律示踪油藏储层的连通性 ,精确计算多层混采中不同单层的产量贡献以及监测产量随时间的变化。文中利用原油全烃气相色谱指纹及天然气碳同位素指纹技术 ,结合高分辨率地震资料和油层压力测试数据 ,对北部湾盆地涠洲 12 1油田北块及莺歌海盆地东方 1 1气田储层连通性进行了研究 ,并依据不同油气层的全烃气相色谱指纹或碳同位素指纹的差异 ,对涠洲 12 1油田中块 Ⅳ、Ⅵ 油组及东方1 1气田 Ⅱ下 、Ⅲ 气组混层开采的产量分配进行了计算 ,从而为上述两油 (气 )田的生产井网部署以及生产后期开采方案的调整提供了参考依据
Gas chromatograph(GC) and carbon isotope fingerprints, developed in recent years, are a geochemical tool of reservoir interpretation. Holohydrocarbon gas chromatograph fingerprint in crude and carbon isotope composition of gas are analyzed, and can be used as tracers of reservoir communication to accurately calculate recovery contributions from individual pays during multi_pay commingled production and to monitor production variations with time. Combined with high_resolution seismic and pressure test data, the holohydrocarbon gas chromatograph fingerprint in crude and carbon isotope fingerprint in gas techniques have been applied to insight into reservoir communication for the northern block of WZ12?1 oil field in Beibuwan basin and for the DF1?1 gas field in Yinggehai basin. Meanwhile, these techniques are also employed to calculate production allocation to each pay for commingled production of the Ⅳ and Ⅵ pays in the middle block, WZ12?1 oil field, and of Ⅱ L and Ⅲ pays in DF1?1 gas field, providing useful reference data for design of production well pattern and adjustment of late development plans in the two fields.
Gas chromatograph(GC) and carbon isotope fingerprints, developed in recent years, are a geochemical tool of reservoir interpretation. Holohydrocarbon gas chromatograph fingerprint in crude and carbon isotope composition of gas are analyzed, and can be used as tracers of reservoir communication to accurately calculate recovery contributions from individual pays during multi_pay commingled production and to monitor production variations with time. Combined with high_resolution seismic and pressure test data, the holohydrocarbon gas chromatograph fingerprint in crude and carbon isotope fingerprint in gas techniques have been applied to insight into reservoir communication for the northern block of WZ12?1 oil field in Beibuwan basin and for the DF1?1 gas field in Yinggehai basin. Meanwhile, these techniques are also employed to calculate production allocation to each pay for commingled production of the Ⅳ and Ⅵ pays in the middle block, WZ12?1 oil field, and of Ⅱ L and Ⅲ pays in DF1?1 gas field, providing useful reference data for design of production well pattern and adjustment of late development plans in the two fields.
引文
1)林壬子,金晓辉,朱丹.油藏混层开采的地球化学动态监测技术.2001
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1 EnglandWA ,MackenzicAS ,MannDMandQuigleyTM .Themovementandentrapmentofpetroleumfluidsinthesubfurface.J .Geol.Soc.,Lond.,1987,144:327～347
2 EnglandWA .Theorganicgeochemistryofpetroleumreservoirs.OrganicGeochemistry,1990,16(1～3):415～425
3 ScheollM .Isotopeanalysisofgasingasfieldandgasstorageoperations.SPEProductionEngineering,1993,8:337～344
4 张焕枝,王铁冠,常象春等.地球化学在油藏评价和油田开发管理中的应用前景.世界地质,1998,17(3):41～48
5 冯子辉,张巨和,关秋华.用族组成和全烃色谱确定原油单井产能配比.石油仪器,1999,13(2):40～42
6 HwangRJ,MoldowanJM .Oilcompositionvariationandreservoircontinuity:Unityfield,Sudan.OrganicGeochemistry,1994,21:171～188
7 林壬子,张敏等编译.油藏地球化学进展.西安:陕西科学技术出版社,1996
8 何文祥,王培荣,呼舜兴等.一种新的测量产液剖面的方法研究.断块油气田,1996,3(5):16～18
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