第39参第2期 2017年3月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017)02017604
DOI:10.13639/j.odpt.2017.02.009
鲁迈拉石膏夹层岩石可钻性预测
邸百英韩福彬”陈绍云”
Vol. 39 No. 2 Mar.2017
.大庆钻探工程公司国际事业部；2.大庆油田有限责任公司期探事业部；3大庆站深工程公司钻并工程研究院
弓用格式：邸百英，韩猫彬，陈绍云鲁迈程石膏失层岩石可钻性预洲【J」-石油钻采工艺，2017，392)：176-179
摘要：鲁拉油田岩心数量少，钻头优选主要依靠施工和设计人页的经验。针对这一间题，以钻建方程为基础，通过逆推回归和数据拟合的方式，建立起鲁迈拉地区岩石可钻性与测并数据对应关系，并以岩屑分形理论为依据对结果造行验证，找出顺利高效完成
关键词：鲁迈拉；数据拟合；岩屑分形；岩石可钻性；复合钻头
中图分类号：TE21
文献标识码：A
Prediction on rock drillability of gypsum interbeds in Rumaila
DI Baiying , HAN Fubin', CHEN Shaoyun
1. International Business Deparfment, CNPC Daging Drlling & Exploration Engineering Corporation, Daqing 163411, Heilongjiang, Chinar;
2. Exploration Division of Daqing Oifield Co., Lid., CNPC, Daqing 163411, Heilongjiang, China;
3. Drilling Engineering Research Institnrte of Daging Drilling Engineering Compay, Daqing 163411, Heilongjiang, China
Citation: DI Baiying, HAN Fubin, CHEN Shaoyun. Prediction on rock drillability of gypsum interbeds in Rumaila [ J ] . Oil Drill-ing & Production Technology, 2017, 39(2): 176-179.
Abstract: In Rumaila Oilfield, there are a small number of cores, so drilling bit optimization is mainly based on the experience of construction and design staff. To solve this problem, the correspondence relationship between rock drillability and log data of Rumaila area was established based on drilling rate equation by means of backstepping regression and data fitting. Then, the results were verified according to cutting fractal theory. Furthermore, the characteristic parameter which can reflect rock breaking difficulty best was deter-mined and the statistical model on rock strength, hardness, drillability and their fractal dimensions was developed. Finally, ROP improve-ment test was carried out specifically on KM533X composite drilling bit on site according to the prediction results of rock drillability. It is shown that the average drilling footage and ROP of each bit is increased by 214.70% and 29.90%, respectively. And thus, the drilling operation in this area is completed smoothly and efficiently.
Key words: Rumaila; data fitting; cutting fractal; rock drillability; composite bit
常规的岩石力学试验方法是以井下取心为对
象，测量若石的力学性能和微钻法可钻性试验，但这种方法费用高、周期长（1-4]。伊拉克鲁迈拉油田由于战争、经济等多种原因，岩心数量少，主要集中在底部并段的储层。而鲁迈拉油田Rus至Umm地层软
硬交互频繁，导致PDC钻头硬地层易崩齿，牙轮钻头软地层无法有效吃人，且不能准确计算其合理下人深度。为了解决该问题，笔者以钻速方程为基础，确定了岩石强度、硬度及可钻性与岩石的这些分形维数的统计模型，为该区块钻头选型提供理论依据，
第一作者：邱百英（1964-)，1988年毕业于大庆石油学院钻并工程专业，现从事钻井工艺相关科研和现场管理工作，高域工程师。通讯地
址：(163411)黑龙江省大庆市让胡路区大庆钻探国际事业部。E-mail：dibaiying@sina.con
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