Sedimentary-Reservoir Characteristics under Control of Transfer Model and Implications for Hydrocarbon Exploration in Huizhou Depression, Pearl River Mouth Basin

Structural transfer zone has been widely concerned by scholars for its important petroleum geological significance, especially the control of the transfer slope on the distribution direction and accumulation range of large sand bodies. In view of the complexity of the distribution of sand bodies and high-quality reservoirs in the transfer zone and nearby steep slope zone, taking the southwest edge of Huizhou depression as an example, a prediction method of high-quality sand bodies in the transfer zone based on the concept of "transfer model" is proposed. Compared with the transfer zone, the study of transfer model is an extension and deepening of the transfer zone studies. In the research scope, the transfer slope zone and fault controlled steep slope are regarded as the combination, emphasizing that there is dynamic space-time interaction between the two sedimentary bodies under the three-dimensional combination. In the research content, the genesis and evolution of high-quality sand bodies are analyzed with the idea of "structure-landform-sedimentation-reservoir", so as to have stronger petroleum geological significance. Based on the concept of "transfer model", in this paper it proposes that three types of transfer models of "acute angle-right angle-obtuse angle" can be divided in the southwest of Huizhou 26 sag. In the structure-geomorphic framework of different types of transfer models, there are three types of sedimentation control effects between the steep slope and the transfer slope fan, which are isolation-superimposition-joint control, and their reservoir physical properties gradually become better. Systematic analysis of sedimentary-reservoir characteristics of transfer model in the Huizhou depression is of theoretical significance to improve the transformation system framework, and it can also meet the exploration demands of large and medium-sized oil and gas reservoirs.