摘要
通过后效气录井能够判断地层流体性质和在一定时间内钻井液侵入情况,可以间接地对储集层进行评价分析,但后效气录井使用常规的油气上窜速度计算方法常常无法得到准确的数据。在新疆等工区进行试验发现,利用总泵冲数方法精确计算从开泵到后效气显示出峰之间的迟到时间,可以对油气上窜速度计算方法进行改进,不仅能够较准确地确定油气层的归位深度,并可利用油气上窜速度等数据指导钻井井控工作,保证钻井安全施工正常进行。
Through aftereffect gas logging,formation fluid property and drilling fluid invasion situation at a certain range of time can be judged to make indirect evaluation and analysis of reservoirs. But the correct aftereffect gas mud logging data could not be obtained generally with the conventional calculating method of oil and gas rising speed. Through making experience in Xinjiang working area and the other working areas,the author found that using total strokes to accurately calculate the lagged time from opening pumps to producing peaks of aftereffect gas can make improvement on calculating method of oil and gas rising speed. The imported method not only can determine localization depth of hydrocarbon reservoir more correctly,but also can guide well control for drilling operation,thus guaranteeing drilling operation safe and normal.
出处
《录井工程》
2010年第4期14-16,共3页
Mud Logging Engineering
关键词
后效气录井
油气上窜速度
总泵冲数
迟到时间
吻合度
aftereffect gas logging,oil and gas rising speed,total strokes,lagged time,coincidence rate
