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奎河1井位于位于准噶尔盆地南缘冲断带四棵树凹陷独山子背斜,预探井,设计井深3680m,主探古近系紫泥泉子组,兼探新近系沙湾组。奎河1井沙湾组油气显示段1187~1826m;古近系紫泥泉子组显示段2508~2749m、3428~3633m。根据邻井独2井、独001井、独1井、独深1井、独山1井实钻压力监测结果看,该区新近系沙湾组及其以上地层基本为正常压力系统,压力系数在1.05~1.30左右,古近系安集海河组存在异常高压,压力系数1.45~2.00。预测奎河1井沙湾组及其以上地层为正常压力系统,安集海河组会存在异常高压,紫泥泉子组和东沟组为正常压力系统。本井为井控二级风险井,减少事故复杂率,对完善该地区的钻井工艺技术具有非常重要的意义。
Well Kuihe 1 is located in the Dushanzi anticline of the Sikeshu depression in the southern margin of the Junggar Basin, with a pre-exploratory well of 3680m in depth. The main site is the Paleogene Zijinquanzi Formation and the exploration of the Neogene Shawan Formation. The Kuwanhe-1 Shawan Formation oil and gas shows 1187 ~ 1826m; Paleogene Zijinquanzi shows 2508 ~ 2749m and 3428 ~ 3633m. According to the monitoring results of the actual drilling pressure of adjacent well No. 2, No. 1, No. 1, No. 1 and No. 1 respectively, the Shawan Formation and its strata above the Neogene are basically normal pressure system and the pressure coefficient In the range of 1.05 ~ 1.30, there are abnormal high pressure in the Anjihaihe Formation of Paleogene, and the pressure coefficient is 1.45 ~ 2.00. It is predicted that the Shawan Formation and its strata in the Kuihe-1 well are normal pressure systems. There will be abnormally high pressures in the Anjihaihe Formation and the normal pressure system in the Zijinquanzi and Donggou formations. This well is a well-controlled secondary risk well, reducing the accidental complexity rate, which is of great significance to improve the drilling technology in this area.