测井资料环境影响因素分析及实用校正方法研究
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摘要
头屯河组是准噶尔盆地腹部陆西地区SN大型岩性油气田的主要油层组之一,由于井径垮塌严重,致使声波、密度测井曲线严重失真,制约了储层预测技术的应用。经分析认为,井径垮塌是因水基泥浆浸泡泥岩导致膨胀蚀变所致,泥岩段原状地层电阻率(RT)基本不受泥浆浸泡影响。据此,建立了井径垮塌段原状地层电阻率(RT)和声波速度,以及声波速度和密度之间新的关系式。应用新的关系式分段对声波和密度进行校正,最后采用滤波公式作平滑处理。应用该方法获得了高质量的声波测井曲线和密度测井曲线,提高了合成记录制作质量,保证了层位标定和井约束下的波阻抗反演结果的正确性,能更有效地解决由于头屯河组地层普遍扩径给岩性圈闭识别带来的困难。
Toutunhe formation is one of the main oil reservoirs formations in SN large lithologic oil and gas field in Luxi region in belly of Junggar basin.The severe collapse of well holes result in distort of acoustic logging and density logging,which restrict application reservoir prediction technique to explore lithologic oil and gas reservoirs.By analyzing,we consider that the mud rocks' bulge alteration caused by water base mud immerse induces the collapse of well holes.Virgin zone's RT at the mud rock section is affected lightly by mud immersion.We present some new correlation formulas between RT and acoustic logging,density and acoustic logging to correct acoustic and density loggings,and then to smooth the correction data using filtering formula.With the processing,the accuracy of the synthetic seismogram is improved greatly,which is important to calibrate horizons and wave impedance inversion,and resolve the recognition difficulty of lithologic trap caused by borehole enlargement.
Toutunhe formation is one of the main oil reservoirs formations in SN large lithologic oil and gas field in Luxi region in belly of Junggar basin.The severe collapse of well holes result in distort of acoustic logging and density logging,which restrict application reservoir prediction technique to explore lithologic oil and gas reservoirs.By analyzing,we consider that the mud rocks' bulge alteration caused by water base mud immerse induces the collapse of well holes.Virgin zone's RT at the mud rock section is affected lightly by mud immersion.We present some new correlation formulas between RT and acoustic logging,density and acoustic logging to correct acoustic and density loggings,and then to smooth the correction data using filtering formula.With the processing,the accuracy of the synthetic seismogram is improved greatly,which is important to calibrate horizons and wave impedance inversion,and resolve the recognition difficulty of lithologic trap caused by borehole enlargement.
引文
[1]刘豪,王英民,王媛,等.准噶尔盆地侏罗系三工河组层序界面结构分析[J].新疆石油地质,2002,23(2):127·
[2]王英民,刘豪,王媛,等.准噶尔大型坳陷湖盆坡折带的类型和分布特征[J].地球科学,2002,27(5):683·
[3]徐怀大.寻找非构造油气藏的新思路[J].勘探家,1996,1(1):43·
[4]冉建斌,李建雄,刘亚村,等.基于三维地震资料的油藏描述技术和方法[J].石油地球物理勘探,2004,39(1):102·
[5]谭廷栋.测井解释发现油气层[J].天然气工业,2000,20(6):47·
[6]杨双定.鄂尔多斯盆地致密砂岩气层测井评价新技术[J].天然气工业,2005,25(9):45·
[7]颜琰·地震地层解释系统开发研究[J]·物探化探计算技术,2000,22(1):40·
[8]曾文冲.油气藏储集层测井评价技术[M]·北京:石油工业出版社,1991·
[9]马劲风.声波测井与地震数据匹配的新方法[J]·西北大学学报(自然科学版),1998,28(3):229·
[10]张雪建,梁峰,王桂玲,等·深度域合成地震记录的制作方法研究[J]·石油地球物理勘探,2000,35(3):377.
[11]车卓吾·测井资料分析手册[M]·北京:石油工业出版社,1995·
[2]王英民,刘豪,王媛,等.准噶尔大型坳陷湖盆坡折带的类型和分布特征[J].地球科学,2002,27(5):683·
[3]徐怀大.寻找非构造油气藏的新思路[J].勘探家,1996,1(1):43·
[4]冉建斌,李建雄,刘亚村,等.基于三维地震资料的油藏描述技术和方法[J].石油地球物理勘探,2004,39(1):102·
[5]谭廷栋.测井解释发现油气层[J].天然气工业,2000,20(6):47·
[6]杨双定.鄂尔多斯盆地致密砂岩气层测井评价新技术[J].天然气工业,2005,25(9):45·
[7]颜琰·地震地层解释系统开发研究[J]·物探化探计算技术,2000,22(1):40·
[8]曾文冲.油气藏储集层测井评价技术[M]·北京:石油工业出版社,1991·
[9]马劲风.声波测井与地震数据匹配的新方法[J]·西北大学学报(自然科学版),1998,28(3):229·
[10]张雪建,梁峰,王桂玲,等·深度域合成地震记录的制作方法研究[J]·石油地球物理勘探,2000,35(3):377.
[11]车卓吾·测井资料分析手册[M]·北京:石油工业出版社,1995·
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