摘要
川西九龙山构造上三叠统须二_下亚段气藏是一个背斜型砂岩底水气藏,各井气、水产量受裂缝控制,裂缝的形成是由于岩石破裂而引起的。从须二_下亚段风干密度、抗压强度和抗拉强度的实际测定和计算机反演得出:①在同层位同一口井中,水层较气层更易发生破裂形成裂缝;②在同一口井中。须二_下亚段较须二_上亚段更易形成裂缝;③在平面上,须二_下亚段在九龙山构造西部较其东部更易破裂形成裂缝;④在平面上,据须二段裂缝发育程度可分为四个区。
The lower T_3x^2 gas reservoir ,located in Jiuongshan structure of western Sichuan Basin,is an anticlinal sandstone reservoir with bottom water drive. The gas and water production is controlled by fractures which are caused by the fracturing of rock. Based on the actual measurements and computer calculation of air drying density compression strength and tensile strength of lower T_3x^2,following conclusions have arrived at :①the water interval are easier to be fractured than the gas interval at the same formation in the same well;②the lower T_3x^2 is easier to be fractured than the upper T_3x^2 in the same well;③laterally, the western part of Jiulongshan structure is easier to be fractured than the eastern part ; ④laterally, the structure can be divided into 4 areas based on the fracture growth level.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1996年第2期1-4,共4页
Natural Gas Industry
关键词
四川盆地
储集层
裂缝
岩石力学
油气藏
Sichuan Basin, West, Late Triassic, Reservoir, Fracture
