石油与天然气地质
石油與天然氣地質
석유여천연기지질
Oil & Gas Geology
2015年
5期
814-821
,共8页
王超%陆永潮%杜学斌%刘占红
王超%陸永潮%杜學斌%劉佔紅
왕초%륙영조%두학빈%류점홍
非均质性%岩相流体概率%油页岩%阜宁组%溱潼凹陷
非均質性%巖相流體概率%油頁巖%阜寧組%溱潼凹陷
비균질성%암상류체개솔%유혈암%부저조%진동요함
heterogeneity%facies and fluids probabilities( FFP)%oil shale%Funing Formation%Qintong sag
为了阐明苏北盆地溱潼凹陷阜宁组二段油页岩岩性非均质性特征及时空展布规律，应用岩心、测井、地化测试和三维地震资料，从岩石类型、测井曲线、总有机碳含量和矿物组分4个方面将油页岩岩性划分为黑色泥岩、粉砂质泥岩和灰质泥岩3类。在此基础上以层序划分为标准，利用岩相流体概率分析技术开展油页岩岩性时空预测研究，并结合实际录井资料验证了预测结果的准确性和可靠性。预测结果揭示出早期湖扩体系域时期，灰质泥岩在工区内广泛发育，粉砂质泥岩仅局限于凹陷西南部，随湖平面上升，灰质泥岩局限于凹陷中部，粉砂质泥岩集中发育于凹陷西南和东北两处，并可见黑色泥岩连片发育；晚期湖扩体系域时期，凹陷内以黑色泥岩发育为主，灰质泥岩呈零星分布，粉砂质泥岩集中发育于工区西南部和北部。以上技术方法和实践应用表明，岩相流体概率分析技术能够准确预测油页岩岩性非均质性时空展布特征，对油页岩勘探开发具有重要意义。
為瞭闡明囌北盆地溱潼凹陷阜寧組二段油頁巖巖性非均質性特徵及時空展佈規律，應用巖心、測井、地化測試和三維地震資料，從巖石類型、測井麯線、總有機碳含量和礦物組分4箇方麵將油頁巖巖性劃分為黑色泥巖、粉砂質泥巖和灰質泥巖3類。在此基礎上以層序劃分為標準，利用巖相流體概率分析技術開展油頁巖巖性時空預測研究，併結閤實際錄井資料驗證瞭預測結果的準確性和可靠性。預測結果揭示齣早期湖擴體繫域時期，灰質泥巖在工區內廣汎髮育，粉砂質泥巖僅跼限于凹陷西南部，隨湖平麵上升，灰質泥巖跼限于凹陷中部，粉砂質泥巖集中髮育于凹陷西南和東北兩處，併可見黑色泥巖連片髮育；晚期湖擴體繫域時期，凹陷內以黑色泥巖髮育為主，灰質泥巖呈零星分佈，粉砂質泥巖集中髮育于工區西南部和北部。以上技術方法和實踐應用錶明，巖相流體概率分析技術能夠準確預測油頁巖巖性非均質性時空展佈特徵，對油頁巖勘探開髮具有重要意義。
위료천명소북분지진동요함부저조이단유혈암암성비균질성특정급시공전포규률，응용암심、측정、지화측시화삼유지진자료，종암석류형、측정곡선、총유궤탄함량화광물조분4개방면장유혈암암성화분위흑색니암、분사질니암화회질니암3류。재차기출상이층서화분위표준，이용암상류체개솔분석기술개전유혈암암성시공예측연구，병결합실제록정자료험증료예측결과적준학성화가고성。예측결과게시출조기호확체계역시기，회질니암재공구내엄범발육，분사질니암부국한우요함서남부，수호평면상승，회질니암국한우요함중부，분사질니암집중발육우요함서남화동북량처，병가견흑색니암련편발육；만기호확체계역시기，요함내이흑색니암발육위주，회질니암정령성분포，분사질니암집중발육우공구서남부화북부。이상기술방법화실천응용표명，암상류체개솔분석기술능구준학예측유혈암암성비균질성시공전포특정，대유혈암감탐개발구유중요의의。
In order to illustrate the lithologic heterogeneity characteristics and spatial-temporal distribution of oil shale of the 2nd Member of Funing Formation in Qintong sag,Subei Basin,this paper makes research on lithology heterogeneity of shale through cores,well logging,geochemical tests and 3D seismic data.After analyzing rock type,well logs,TOC and mineral contents,the oil shale is divided into black shale,silty mudstone and lime mudstone.After the research on litholo-gy division and isochronous sequence stratigraphic framework,Facies and Fluids Probabilities(FFP)method is used to predict the spatial-temporal distribution of various lithologies within the oil shale,and the prediction results are con-firmed by the real logging data.The results indicate that in the early expansion system tract,lime mudstone widely deve-loped in the research area,meanwhile silty mudstone only developed in the southwest of Qintong sag.With the lake level rising,lime mudstone developed in the central sag and silty mudstone developed in the southwest and northeast of the sag.Black shale deposited in the entire area.In the late expansion system tract,black shale was widely deposited in the sag,while lime mudstone developed sporadically and silty mudstone only developed in the southwest and northeast of the sag.In conclusion,FFP can accurately predict the temporal and spatial distribution of various lithologies within oil shale, which has important significance for the exploration and development of oil shale.
