Seesaw Movements in Geological Process and Its Effect on Hydrocarbon Accumulation

  • MENG Qingyang;PANG Xiongqi;MA Xingzhi
  • 1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;2. Basin & Reservoir Research Center, China University of Petroleum, Beijing 102249, China

Received date: 2011-06-16

  Revised date: 2012-10-09

  Online published: 2012-11-18


Seesaw movement is the alternatively differential elevation and subsidence movement that happened under different stress field in the same place during geologic history. The seesaw movement controls the multiple hydrocarbon expulsion of source rocks, the development and reconstruction of reservoir quality, the migration and preservation of hydrocarbon. The kinematic equilibrium belt is the relatively stable areas and also favorable for hydrocarbon accumulation during seesaw movements. In order to identify quantatively the boundary of kinematic equilibrium belt, in this paper, Tarim Basin is taken as an example to identify kinematic equilibrium belt using average erosion thickness. After statistic analyzing the relation between average erosion thickness and daily production of exploration wells of main target layers, it is found that the average erosion thickness between 50m and 200m is the most favorable range for hydrocarbon accumulation. When the average erosion thickness is too large or too small, it is not favorable for hydrocarbon accumulation. On the basis of recovering the average erosion thickness, the kinematic equilibrium belt of Tarim basin is identified in different hydrocarbon accumulation periods. Most of the hydrocarbon occurrence is closely related to kinematic equilibrium belt.

Cite this article

MENG Qingyang;PANG Xiongqi;MA Xingzhi . Seesaw Movements in Geological Process and Its Effect on Hydrocarbon Accumulation[J]. Science & Technology Review, 2012 , 30(33) : 41 -44 . DOI: 10.3981/j.issn.1000-7857.2012.33.007