川中地区下二叠统白云岩储层测井评价.pdf

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1、第40卷第2期天然气勘探与开发川中地区下二叠统白云岩储层测井评价赵艾琳谢冰何绪全吴煜宇中国石油西南油气田公司勘探开发研究院摘要四川盆地川中地区下二叠统茅口组和栖霞组发育裂缝一孔洞型白云岩储层，多口井测试获高产工业气流。但茅口组热次盆相白云岩岩性复杂、富含硅质、非均质性强，测井储层精细评价困难；栖霞组白云岩受岩溶及多期构造作用影响，缝洞发育，储层厚度薄，基质具有低孔隙、低渗透特征，储层评价及产能预测难度大。通过综合分析常规测井、成像测井、阵列声波测井资料，结合地质录井资料，建立白云石、方解石和硅质岩等复杂岩性及非均质构造

2、识别标准，解决了茅口组硅质白云岩岩性识别问题；基于成像裂缝、孔洞参数、斯通利波能量衰减、核磁孔隙结构参数建立了储层定量判别标准及图版。该方法在川中地区下二叠统储层评价中取得了良好的应用效果，测井解释符合率超过80％，为川中地区下二叠统天然气储量申报提供了技术支持，为川中地区高石梯一磨溪一龙女寺地区立体勘探、寻找规模储量与资源接替领域提供了支撑作用。关键词四川盆地川中地区早二叠世裂缝一孔洞型储层非均质性岩性识别特殊测井储层评价符合率DOI：10．12055／gaskk．issn．1673-3177．2017．02．001

3、1IⅣellloggingeValuationoftheLowerPermiandolomitereserVoirincentralSichuanBasinZhaoAilin，XieBing，HeXuquan，WuYuyu@esenrchInstimte可Explornnon＆DevelopmeⅢ，Pe打oChinnSouthWestoil＆GcIsFieldCompnny．Chengdu．Si—chunn6i0041．Chin口、Abstract：Thefracture．cavityd010mitereservoir

4、sdevelopintheLowerPeHnianMaokouFormationandQixiaFormationinthecen—tralSichuanBasin，andhavecontributedhigh—yieldindustrialgasflowduringtestingofseVeralwells．HoweVer，theMaokouForma—tiondolomiteofhydrothermalsub—basinfaciesisconlplexinlithology，richinsiliceousconte

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6、voirevaluationandproductioncapacitypredictiondimcult．ThroughthecomprehensiVeanalysisofconVentionallogging，imaginglogging，andarrayacousticloggingdata，togetherwithgeologicalloggingdata，theidentificationstandardsfbrcomplexlith0109ies(e．g．dolo—mite，calcite，andsilice

7、ousrock)andheterogeneousstructureswereestablishedtofhcilitatedthelithologicalidentificationofsiliceousdolomiteintheMaokouFormation．Basedonthefracture／cavityparametersobtainedbyimagingloggingdata，StoneleywaVeenergyattenuation，andNMRporestmctureparameters，thequant

8、itativereservoirdiscriminationcriteriaandchartsweredenned．Thismeth—odwassatisfactorilyappliedintheLowerPermianreserVoirinthecentralSichuanBasin，withthe1099inginterpre