Basalt Feature and Bit Type Selection in Malang
详细信息
- 责任者：Wu Huimei (Provincial Key Laboratory of Petroleum Drilling Recovery Engineering ; School of Petroleum Engineering ; Yangtze University ; Jingzhou 434023 ; China) ; Lou Yishan
- 刊名：Xinjiang Petroleum Geology
- 出版年：2011
- 卷期：32(4)
- 关键词：牙轮钻头 ; roller cone bit ; 玄武岩 ; basalts ; 岩石可钻性 ; rock drillability
- 页码：p.429-430, 438
- 图表：1 illus., 3 tables, 3 refs.
- 分类号：2000
- issnNo：ISSN1001-3873
- isbnNo：CN65-1107/TE
摘要
The main lithology of the igneous rocks under the Permian in Malang sag is basalt with the characteristics of strong abrasion resistance, low drillability and low drilling rate. This paper tests the drillability of the cores from the field, develops rock drillability model, computes the drillability grade of cone bit and PDC bit and optimizes the bit according to the bit structural features. The results indicate that in light of the basalt strata under Permian, using recommended bit has increased the mechanical drilling rate by 50% compared with other bits, shortened the drilling cycle, and attained the aim of excellent and fast drilling.