基于六臂地层倾角资料的井眼扩大系数对录井迟到时间的校正

doi:10.3969/j.issn.1672-9803.2023.02.007

录井工程 ›› 2023, Vol. 34 ›› Issue (2): 39-44.doi: 10.3969/j.issn.1672-9803.2023.02.007

基于六臂地层倾角资料的井眼扩大系数对录井迟到时间的校正

徐长凯, 刘晓亮, 王俊

中国石油大庆钻探工程公司地质录井一公司

收稿日期:2023-04-09 出版日期:2023-06-25 发布日期:2023-07-12
作者简介:徐长凯工程师,1970年生,2014年毕业于东北石油大学石油工程专业,现在大庆钻探地质录井一公司资料采集二分公司从事综合录井管理工作。通信地址：163411 黑龙江省大庆市地质录井一公司资料采集二分公司。电话：（0459）5691861。E-mail：xuchangkai@petrochina.com.cn

Correction of mud logging lag time by borehole enlargement coefficient based on six-arm dipmeter log

XU Changkai, LIU Xiaoliang, WANG Jun

No.1 Mud Logging Company of CNPC Daqing Drilling & Exploration Engineering Corporation, Daqing, Heilongjiang 163411, China

Received:2023-04-09 Online:2023-06-25 Published:2023-07-12

摘要/Abstract

摘要： 伊拉克B油田的Sulaiy地层“糖葫芦串”形的椭圆井眼非常发育,对迟到时间影响较大。基于六臂地层倾角测井资料,采用最佳逼近的椭圆拟合井眼实际情况,并引入井眼扩大系数克服井径扩大率表征裸眼段井眼规则度方面的不足,解决了井眼不规则而引起的迟到时间不精准问题。在实际生产中,应用文中迟到时间校正公式对伊拉克B油田5口井迟到时间进行校正,使录井深度（迟到井深）与电测深度绝对误差降至1.4 m以内,满足了B油田生产需求,效果良好。

关键词: 迟到时间, Sulaiy地层, 椭圆井眼, 六臂地层倾角, 最佳逼近, 椭圆拟合, 井径扩大率, 井眼扩大系数

Abstract: The "sugarcoated haws on sticks string" shaped elliptical hole of Sulaiy Formation in Iraq B oilfiled is very developed and has a great impact on the lag time. Based on the six-arm dipmeter log, the best approximation ellipse is used to fit the actual situation of the borehole. And the introduction of borehole enlargement coefficient overcomes the shortcomings of hole enlargement ratio in characterizing the borehole regularity of the open hole interval, and solves the problem of inaccurate lag time caused by borehole irregularity. In actual production, the lag time correction formula in this paper was applied to correct the lag time of five wells in Iraq B oilfield, which can reduce the absolute error between mud logging depth （lag well depth） and electric depth to within 1.4 m, and meet the production demand of B oilfield with good results.

Key words: lag time, Sulaiy Formation, elliptical hole, six-arm stratigraphic dip, best approximation, ellipse fitting, hole enlargement ratio, borehole enlargement coefficient

中图分类号:

TE132.1

徐长凯, 刘晓亮, 王俊. 基于六臂地层倾角资料的井眼扩大系数对录井迟到时间的校正[J]. 录井工程, 2023, 34(2): 39-44.

XU Changkai, LIU Xiaoliang, WANG Jun. Correction of mud logging lag time by borehole enlargement coefficient based on six-arm dipmeter log[J]. Mud Logging Engineering, 2023, 34(2): 39-44.

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基于六臂地层倾角资料的井眼扩大系数对录井迟到时间的校正

Correction of mud logging lag time by borehole enlargement coefficient based on six-arm dipmeter log

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