第39参第5期 2017年9月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017)050058404
DOI:10.13639/j.odpt.2017.05.010
伊朗南帕斯区块伽马曲线校正方法
宋晓健董晨曦徐洪国】李猛杨国光】宋晓晖
1.浙海钻探定向井公司；2.华北油田通信公司
Vol. 39 No. 5 Sep.2017
引用格式：宋晓健，董晨曦，徐洪国，李猛，杨国光，宋晓辉.伊朗南帕斯区块马面线校正方法[』】石油钻采工艺，2017， 39(5);584-587,593.
摘要：随钻自然细马测井是现代地质乎向测井的主要技术手段，且受到诸多地层或者非地层因素的影响，其中K”对他马探管的探测有着较大的干扰，需要进行环境系数校正。但是在伊朗南帕斯区块等新开发区块，LWD生产商无法提供准确的现场校正数据和图表，乎致现场人页无法准确完成细马值的校正工作。通过对伊朗南帕斯SPDC19-x，SPDC15-x、SPDC4-x、 SPDC6-x四大区块中0311mm井眼的定向并施工中得到的大量实践数据进行优化拟合分析和matlab的数据统计，得出了新
95%，且负值镭误率低于1%，送优于传统校正方式，并且在伊朗南帕斯其余区块20余口并的现场校正施工中得到了广逐的应用。
关键词：K"；校正系数；校正公式；伽马探测；回归数据分析
中图分类号：P631
文献标识码：A
A correction method for thegamma ray curve of South Pars Block in Iran
SONG Xiaojian', DONG Chenxi', XU Hongguo', LI Meng , YANG Guoguang , SONG Xiaohui
1. Directional Drlling Senvice Company, CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, Chinar,
2. Commamication Company, PetroChina Hrabei Oijfield Company, Rengiu 062550, Hebei, China
Citation: SONG Xiaojian, DONG Chenxi, XU Hongguo, LI Meng, YANG Guoguang, SONG Xiaohui. A correction method for the s 8s (s ooend Bu [ d noo a e e
Abstract: Gamma ray logging while drilling is currently one important geo-steering logging technology. Due to the influence of many formation or non-formation factors, the gamma ray pipe detection is interfered more by K**, so the environmental coefficient shall be corrected. In newly developed blocks (e.g. South Pars Block in Iran), however, on-site operators cannot correct the gamma valuc accurately for LWD manufacturer cannot offer accurate field correction data and charts. In this paper, optimization fitting analysis and matlab data statistics were carried out on abundant practical data obtained during the directional drilling of 0311 mm hole in four blocks of South Pars, Iran, including SPDC19-x, SPDC15-x, SPDC4-x and SPDC6-x. And a new correction method was developed and a new gamma calculation formula was established. When KCI drilling fluid system is used, the gamma ray curve plotted on the basis of the new correction method is highly accordant with the gamma value of reference exploration formation, with accordance rate of 95% and error ratio lower than 1%. Obviously, it is much superior to the traditional correction technologies. It has been widely applied to the ficld correction of over 20 wells in other blocks of South Pars in Iran
Key words: K4°; correction coefficient,; correction formula; gamma ray detection; regression data analysis
随钻自然伽马测井技术在现代地质导向测并中占有重要的地位，它广泛应用于划分储层以及评价水平并储层随钻率。一般情况下，该技术采用传统
校正方法测得的伽马曲线能够正确反映岩性特征信息，但在伊朗南帕斯区块由于没有相关校正图版，使得传统校正方式测得的伽马API值异常，甚至出现负
第一作者：宋晓健（1986-),2009年毕业于天津大学精密仪器学院测控技术与仅器专业，主要从事定向并仪器应用方面的研究，工程师。
通讯地址：(062552)河北有任五市游海钻深定向并分公司。E-mail:tju210sxj@126.com
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