详细信息   

• 责任者：Meng Xiangchao (Hangzhou Geological Research Institute of PetroChina ; Hangzhou 310023 ; China) ; Gong Qingshun
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2010
• 卷期：29(5)
• 关键词：结晶岩类储集层 ; crystalline reservoirs ; 裂隙 ; cracks ; 新疆 ; Xinjiang
• 页码：p.6-12
• 图表：9 illus., 11 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

摘要

Santanghu Basin is located in the north of Xinjiang Uygur Autonomous Region, the studied ong Block is developed on the northern slope belt of this basin. The reservoir of this block Kalagang area Niud-Formation is mainly neutral-basic volcanic rock. The analysis shows that： vertically low-angel, medium-low angle and medium-high angle fractures are well-developed in the early C₂k₅ bed set for this kind of volcanic rock. With the gradual reduction of the extrusive strength of the volcanic rock, low-angel, medium-low angle, medium-high angle and high-angle fractures are undeveloped in C₂k₄, C₂k₃, C₂k₂, C₂k₁ bed sets; horizontally the fracture development density is reduced step by step from the NE structure peak nearby the main fault to SW structure low far away from the above fault, tension fracture gradually transfers into shear one. The fracture occurrences are connected seriously to the water cut, the fracture strike is vertical to the regional compressive belt for typical high-watercut well, the principal form is high-angle tension fractures, in vertical these fractures are easy to be water flooded. The much higher coincidence between predicted results and actual development can provide technical support for the further fine development of the oilfield.