碎屑异常 clastic anomaly
- 异常高孔隙发育带的控制因素为:①火山碎屑物质对孔隙的保存及其溶解形成的次生孔隙;
The controlling factors for these two zones are as follows:①pyroclastic materials can be dissolved and form secondary pores; - 机械卡钻可能由井眼内的碎屑、井眼内几何形状异常、水泥、键槽或者岩屑在环空中的积聚等引起。
Mechanical sticking can be caused by junk in the hole, wellbore geometry anomalies, cement, keyseats or a buildup of cuttings in the annulus.
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