地层岩石抗钻特性横向分布规律

doi:10.7623/syxb2016S2018

石油学报 ›› 2016, Vol. 37 ›› Issue (S2): 144-149.DOI: 10.7623/syxb2016S2018

地层岩石抗钻特性横向分布规律

窦同伟¹, 刘清友², 任海涛³, 孙景涛¹, 周岩⁴

1. 中国石油大港油田公司石油工程研究院天津 300280;
2. 西华大学流体及动力机械教育部重点实验室四川成都 610039;
3. 西南石油大学机电工程学院四川成都 610500;
4. 中国石油冀东油田公司钻采工艺研究院河北唐山 063000

收稿日期:2016-07-18 修回日期:2016-12-19 出版日期:2016-12-30 发布日期:2017-03-08
通讯作者: 刘清友,男,1965年10生,1986年获西南石油学院学士学位,1997年获西南石油学院博士学位,现为西华大学博士生导师、教育部长江学者特聘教授,主要从事石油机械、管柱力学、井下工具与管道机器人及计算机仿真等方面的研究工作。Email:liuqy66@aliyun.com
作者简介:窦同伟,男,1970年12月生,2006年获中国石油大学(华东)学士学位,2013年获长江大学石油与天然气工程专业硕士学位,现为中国石油大港油田公司石油工程研究院高级工程师,从事钻井工程、煤层气开采及管理工作。Email:dtw_cnpc@126.com
基金资助:
国家自然科学基金项目（No.51504209）和石油天然气装备教育部重点实验室开发基金项目（OGE201403-02）资助。

Lateral distribution law of formation rock anti-drilling property

Dou Tongwei¹, Liu Qingyou², Ren Haitao³, Sun Jingtao¹, Zhou Yan⁴

1. Research Institute of Petroleum Engineering, PetroChina Dagang Oilfield Company, Tianjin 300280, China;
2. Key Laboratory of Fluid and Power Machinery(Xihua University), Ministry of Education, Sichuan Chengdu 610039, China;
3. Mechatronic Engineering College, Southwest Petroleum University, Sichuan Chengdu 610500, China;
4. Drilling and Production Technology Institute, PetroChina JiDong Oilfield Company, Hebei Tangshan 063000, China

Received:2016-07-18 Revised:2016-12-19 Online:2016-12-30 Published:2017-03-08

摘要/Abstract

摘要：

地层岩石力学强度分析（含纵向、横向变化规律分析）是石油勘探与开发领域的重要研究方向，对于认识地下圈闭构造、掌握油气生成和运移环境、制定合理油气资源钻采方案等具有重要意义。首先，采集了中国大港油田歧口凹陷东营组、沙河街组地层共27块岩心，测定了抗压强度、可钻性级值等数据，并与对应的测井资料数据开展了相关性研究，建立了分析计算函数；其次，切分各函数不同的相关性系数作为影响权重，再复合于各因素（测井参数）独立的影响规律函数，从而建立对地层岩石强度分析、预测的多因素综合评价函数；最后，将地层岩石强度横向变化规律抽象为一个曲面拟合问题，采用三次曲面幂基函数拟合法建立了映射关系函数，从而形成一种分析地层岩石强度横向变化规律的新方法。研究成果可用于钻井设计中对指定井位、井身轨迹下的地层纵向、横向岩石力学强度及可钻性级值等的分析预测；更可为钻井工程中钻头选型与个性化设计、井壁稳定性评价等提供重要参考依据。

关键词: 岩石强度, 分布规律, 测井数据, 回归分析, 数学建模, 地层评价

Abstract:

The analysis onformation rock mechanical strength(including the vertical and lateral variation law) is an important research direction in the field of petroleum exploration and development, which is of great significance to the understanding of underground trap structure, the recognition of hydrocarbon generation and migration environment, and the preparation of proper hydrocarbon drilling and production schemes. Firstly, a total of 27 cores were collected from the Dongying Formation and Shahejie Formation of Qikou Depression, Dagang Oilfield to obtain the compressive strength, drillability grade and other data. Moreover, a correlation research was conducted in combination with the corresponding logging data, so as to establish theanalytic and computable functions.Secondly, different correlation coefficients of each function were separated and taken as influence weights, and then recombined into the independent influence law function of each factor(logging parameter), thus creating the multi-factor comprehensive evaluation function for formation rock strength analysis and prediction. Finally, thelateral variation law ofrock strengthwas abstracted as a curve fitting problem. Mapping function was established using thecubic-surface power-function fitting method, so as to develop a new method to analyze the lateral variation law of rock strength.Research results can be used to analyze and predict the vertical and lateral rock strength and drillabilitygrade in the designated well and borehole trajectory during the drilling design. Moreover, these results can even provide important references for bit selection, customized design and borehole stability evaluation in the drilling process.

Key words: rock strength, distribution pattern, logging data, regression analysis, mathematical modeling, formation evaluation

中图分类号:

TE21

窦同伟, 刘清友, 任海涛, 孙景涛, 周岩. 地层岩石抗钻特性横向分布规律[J]. 石油学报, 2016, 37(S2): 144-149.

Dou Tongwei, Liu Qingyou, Ren Haitao, Sun Jingtao, Zhou Yan. Lateral distribution law of formation rock anti-drilling property[J]. Acta Petrolei Sinica, 2016, 37(S2): 144-149.

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地层岩石抗钻特性横向分布规律

Lateral distribution law of formation rock anti-drilling property

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