塔里木盆地塔中地区火成岩体识别与预测技术

IDENTIFICATION AND PREDICTION OF VOLCANIC BODIES IN TAZHONG AREA OF THE TARIM BASIN

张传林

ZHANG Chuan-lin

中国地质大学, 北京, 100083

China University of Geosciences, Beijing 100083, China

塔里木盆地塔中地区火成岩发育,纵向上从二叠系至前震旦系主要发育有4期,严重地影响了该区构造圈闭落实的可靠性以及油气藏后期的保存条件,也是塔中18、21、22等井钻探失败的主要原因。为降低钻探风险,在该区进行了火成岩体识别与预测技术攻关,总结出了7种方法,它们的相互配合,可以较为有效地预测火成岩分布以及火成岩对下伏构造的影响,指导该区勘探;通过中1井的钻探,已经取得了较好的效果。

Four periods of volcanics were developed from Permian to Presinian in Tazhong area of the Tarim Basin, which seriously infleunced the structural traps and preservation of hydrocarbon accumulation in the area.It was the main reason of drilling failure of wells TZ18, 21, 22 et al.To avoid exploration risk, several methods for identification and prediction of volcanics were proposed.A good result was obtained during drilling of well Zhong-1 as a result of successful prediction of structure under volcanic body.

https://doi.org/10.11781/sysydz200305513