CAJ | 학술논문

通过对盆地115口井测井资料统计与处理，研究环县-正宁地区长9暗色泥岩分布特征。研究区长91泥岩厚度和分布面积大于长92；泥岩厚6~40 m，最高70 m；较厚泥岩分布于固城-塔儿湾和庆阳-马岭地区。据研究区泥岩厚度和平均有机碳含量，将研究区长9烃源岩分布划分为4个区块。通过热模拟实验，分析研究区长9暗色泥岩生烃潜力。随着温度增加，气态烃和液态烃产率都逐渐升高。气态烃产率在350℃时出现急剧增加，450℃时达463 kg/t.TOC；350℃时液态烃产率达最高值，为70.7 kg/t.TOC，之后液态烃产率随着温度增加而减少。总烃产率在350℃时迅速增长，450℃时达469.7 kg/t.TOC。通过与其他地区烃源岩生烃参数对比研究，认为长9暗色泥岩具较好生烃潜力。
통과대분지115구정측정자료통계여처리，연구배현-정저지구장9암색니암분포특정。연구구장91니암후도화분포면적대우장92；니암후6~40 m，최고70 m；교후니암분포우고성-탑인만화경양-마령지구。거연구구니암후도화평균유궤탄함량，장연구구장9경원암분포화분위4개구괴。통과열모의실험，분석연구구장9암색니암생경잠력。수착온도증가，기태경화액태경산솔도축점승고。기태경산솔재350℃시출현급극증가，450℃시체463 kg/t.TOC；350℃시액태경산솔체최고치，위70.7 kg/t.TOC，지후액태경산솔수착온도증가이감소。총경산솔재350℃시신속증장，450℃시체469.7 kg/t.TOC。통과여기타지구경원암생경삼수대비연구，인위장9암색니암구교호생경잠력。
Based on 115 wells logging data statistics and processing,distribution characteristics of dark mudstone of Chang 9 was studied.Mudstone of Chang 91 thickness and distributed area are greater than Chang 92 in the study area, distribution of mudstone thickness is in an average of 6 to 40 m,up to 70 m;Thicker mudstone areas are in Gucheng-Taer-wan and Qingyang-Maling;According to mudstone thickness and average organic carbon content in the study area,the distribution of hydrocarbon source rock of Chang 9 in the study area is divided into four blocks.These areas are Taibail-iang- Qingyang,Gucheng- Taerwan and Qingyang- Maling, Heshui,Zhengning.Based on the thermal simulation experi-ment,determined hydrocarbon potential of Chang 9 dark mudstone in the study area.With the increasing of temperature, gaseous hydrocarbon and liquid hydrocarbon production rate were increased.Gaseous hydrocarbon production rate at 350℃ increased in a sharp, in 450 ℃ up to 463 kg/t.TOC; At 350℃,the liquid hydrocarbon production rate reached the peak(70.7 kg/t.TOC),then the liquid hydrocarbon production rate decreased with the increasing of temperature; Total hy-drocarbon production rate rapidly growed in 350℃, at 450℃ up to 469.7 kg/t.TOC. Through the comparision of Hydro-carbon generation parameter of Chang 9 dark mudstone in study area with other source rocks, Chang 9 reservoir group has better potential in hydrocarbon generation of source rock in the study area.