扇三角洲沉积体系小层划分与对比
——以南堡凹陷高123X2井区Es32+3亚段为例

Stratigraphic classification and correlation for fan delta depositional system:Taking Gao 123X2 well area in Nanpu Sag as an example

李海东 2 王红³ 陈少勇³ 李志华⁴ 王海考³ 夏秋君³

1．中国石油冀东油田分公司开发处，河北 唐山 063004 2．成都理工大学沉积地质研究院，四川 成都 610059
3．中国石油冀东油田分公司勘探开发研究院，河北 唐山 063004 4．中国石油拉美公司，北京 100007

Development Department, Jidong Oilfield Company, PetroChina, Tangshan 063004, China Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China Research Institute of Exploration and Development, Jidong Oilfield Company, PetroChina, Tangshan 063004, China CNPC Latin America Company, Beijing 100007, China

南堡凹陷高123X2井区为扇三角洲沉积体系地层，该类型地层具有物源多、相带窄、相变快等特点，新钻井受地面平台位置限制出现斜度大、钻遇油层变化快差异大等问题，给地层划分与对比带来困难，进而影响井区后续注采调控效果。文中基于层序地层学、沉积学等理论，通过精细对比新钻井沉积旋回、物性及流体等特征，利用地层真厚度校正法，结合高分辨率地震反演资料，完成了研究区沙河街组沙三段2 + 3亚段（Es32+3）地层精细划分与对比工作，确保了各井分层统一，为扇三角洲沉积体系地层划分与对比提供了一种有效方法。

The Gao123X2 well area in Nanpu Sag developed fan delta deposition with the characteristics of multiple sources, narrow sedimentary facies and fast transformation. Limited by the ground platform, new well has the problem of high slope and the rapid reservoir change, which bring difficulties to the stratigraphic division and correlation, and influences injection?-production adjustment effect. Based on the theory of sequence stratigraphy and sedimentology and by contrast of sedimentary cycle and physical properties and fluid characteristics, true strata thickness correction, and high resolution seismic inversion data, fine stratigraphic classification and correlation of the Member 32+3 of Shahejie Formation were researched, which also provides us an effective method to classify strata and compare strata for fan delta depositional system.

10.6056/dkyqt201601005