南川页岩气田岩石抗钻特性参数分布规律研究及应用  

Distribution rule of formation anti-drillability parameters in shale gas block of Nanchuan and its application

作　　者：朱亮[1,2,3] 楼一珊[1,2,3] 沈建中[4] 贺庆[4] 秦杜[4] ZHU Liang;LOU Yishan;SHEN Jianzhong;HE Qing;QIN Du(Leak Resistance and Sealing Technology Research Department, National Engineering Laboratory of Petroleum DrillingTechnology, Yangtze University, Wuhan, Hubei 430100, China;Key Laboratory of Drilling and Production Engineering for Oiland Gas, Yangtze University, Wuhan, Hubei 430100, China;School of Petroleum Engineering, Yangtze University, Wuhan,Hubei 430100, China;Research Institute of Petroleum Engineering, Sinopec East China Oil and Gas Company,Nanjing, Jiangsu 210031, China)

机构地区：[1]长江大学油气钻井技术国家工程实验室防漏堵漏技术研究室,湖北武汉430100 [2]长江大学油气钻采工程湖北省重点实验室,湖北武汉430100 [3]长江大学石油工程学院,湖北武汉430100 [4]中国石化华东油气分公司石油工程技术研究院,江苏南京210031

出　　处：《油气藏评价与开发》2019年第5期84-88,共5页Petroleum Reservoir Evaluation and Development

基　　金：“十三五”国家科技重大专项“彭水地区岩石抗钻特征参数分析研究”（2016ZX05061-009）

摘　　要：岩石抗钻特性参数是制定钻井方案,实施优快钻井的重要基础参数。通过岩石抗钻特性参数测试建立了岩石抗压强度、岩石可钻性级值、岩石硬度等岩石抗钻特性参数的计算模型,再结合测井数据和地质数据,绘制了南川页岩气井各地层岩石抗钻特性参数随井深变化的剖面图,分析了南川地区各地层岩石抗钻特性参数的分布规律,并据此进行了钻头选型。研究表明,南川页岩气区块梁山组以上地层各特征参数波动较大,说明地层非均质性明显;下部地层变化较为平缓,但从龙马溪组底部开始有逐渐抬升的趋势。依据地层岩石抗钻特性参数,在设计钻头时应选择具有较好耐磨性、5~6刀翼、13~16mm的高布齿密度的钻头,现场应用表明,所推荐的钻头使用效果良好,机械钻速明显提高。Rock anti-drillability parameters are important basic parameters for making drilling plan and implementing optimal drilling. In this paper, the computational models of formation anti-drillability parameters such as rock compressive strength, rock drillability level value and rock hardness are established through the rock mechanics testing. After that, combined with the logging data and geological data, the profiles of rock anti-drillability parameters varied with the well depth of different strata for shale gas in Nanchuan are also built up. Based on the analysis of its distribution rule, the bits are selected. The study shows that the characteristic parameters of the strata above Liangshan Formation in the shale gas block of Nanchuan fluctuate greatly, which indicates that the stratigraphic heterogeneity is obvious;the lower strata change more gently, but there is a gradual upward trend from the bottom of Longmaxi Formation. According to rock anti-drillability parameters, bits with good wear resistance, 5 ~ 6 blades, and 13 ~ 16 mm cutting teeth with high density should be selected in bit design. The field application shows that the recommended bit has a good effect and the drilling speed is obviously improved.

关 键 词：抗钻特性参数 分布规律 钻头选型 页岩气 南川 

分 类 号：TE242[石油与天然气工程—油气井工程]