摘要
三塘湖盆地位于新疆北部,研究区牛东区块发育在其北部斜坡带上,储层卡拉岗组以中-基性火山岩为主.为搞清火山岩裂缝发育规律,探求火山岩裂缝对产能的控制作用,应用FMI成像测井资料分析得出：卡拉岗组火山岩裂缝纵向上,早期C2k5层组发育低角度缝、中-低角度缝和中-高角度缝,随着火山喷发强度逐渐减弱,C2k4、C2k3、C2k2、C2k1层组发育低角度缝、中-低角度缝,中-高角度缝和高角度缝不发育 平面上,由靠近主断裂的北东向构造高部位向远离主断裂的南西向构造低部位裂缝发育密度逐渐降低,由张性裂缝逐渐过渡为剪性裂缝.裂缝类型与产量相关性强,典型高产井以风化裂缝为主,少量高角度构造裂缝沟通,风化裂缝以倾角不一、走向多方位和网状交织为特征.裂缝产状与含水相关性强,典型高含水井裂缝走向垂直区域挤压构造带,以高角度张性裂缝为主,纵向易水淹.预测结果与开发实际吻合度较高,为油田下一步精细开发提供了技术支持.
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. In order to make clear of the development laws of the volcanic rock fractures and seek for the control of these fractures on the productivity, with the help of the application of FMI imaging logging data, 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. Fracture type is greatly related with the production, typical high-productivity well takes weathered fractures as main form, seldom connected with high-angle structural fracture and furthermore the weathered fractures are characterized by different dips, multiple-azimuth strikes and woven mesh. 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.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2010年第5期6-12,共7页
Petroleum Geology & Oilfield Development in Daqing
基金
中石油科技中青年创新基金项目（08E1040）资助.
关键词
裂缝倾角
裂缝走向
玫瑰图
张性缝
剪性缝
风化缝
fracture dip
fracture strike
rose diagram
tension fracture
shear fracture
weathered fracture
作者简介
孟祥超,男,1974年生,硕士,工程师,从事储层及油藏评价研究. E-mail：mengxc_bj@yahoo.com.cn
