白杨河矿区煤层气丛式井钻井难点及对策研究  

Drilling Difficulties of CBM Cluster Wells in Baiyanghe Mining Area and the Related Solutions

作　　者：毛志新 谢相军 汤建江 

机构地区：[1]山东科瑞油田服务集团股份有限公司,山东东营257000 [2]新疆维吾尔自治区煤田地质局一五六煤田地质勘探队,新疆乌鲁木齐834000

出　　处：《探矿工程（岩土钻掘工程）》2016年第12期37-40,共4页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：新疆国土资源厅地勘基金项目"阜康市白杨河矿区煤层气开发利用先导性示范工程"(编号N14-4-XJ01)

摘　　要：新疆阜康市白杨河矿区煤层气开发利用先导性示范工程是新疆第一个煤层气示范工程项目。白杨河矿区总体构造为向南倾斜的单斜构造,地层倾角大,煤层多且间距大。该示范工程开发方案主要井型为丛式井。经过多年钻井实践,丛式井钻井技术在鄂尔多斯盆地东缘煤层气区块已经非常成熟,初步形成了一套适合该地区煤层气开发的丛式井钻井技术。由于白杨河矿区地质条件与鄂尔多斯盆地东缘各区块相比差异大,特别是存在地层倾角大、煤层多且间距大等地质特点,因此不能完全照搬原有的丛式井钻井技术。本文依据白杨河矿区地质资料,分析了白杨河矿区煤层气丛式井钻井难点,对解决该区块钻井难点的技术对策和攻关思路进行了总结与阐述,初步形成了一套适合白杨河矿区大倾角厚煤层的丛式井钻井技术。Baiyanghe CBM pilot demonstration project in Fukaug City of Xinjiang Uygur Autonomous Region is the first CBM demonstration project in Xinjiang. The general structure of Baiyanghe mining area is monoclinal structure in the direction of south with large dip angle ,. and large spacing in muhi coal seams. Cluster wells are the main type for this demonstration project development plan. By many years drilling practice, this technology have been very mature in CBM block of east Ordos basin, a set of cluster wells drilling technology suitable for CBM development in this area is preliminarily formed. As the geological conditions in Baiyanghe mining area are quite different with east Ordos basin block, especially with the characteristic of large dip angle, multiple coal seams and large seam spacing, the cluster wells drilling technology in East Ordos Basin cannot be directly adopted. Based on the geological data, this paper analyzes the difficulties of CBM cluster wells drilling in Baiyanghe mining area, summarizes and expounds the technical countermeasures. The drilling technology of cluster wells suitable for Baiyanghe mining area has been developed.

关 键 词：煤层气 丛式井 大倾角 厚煤层 钻井难点 白杨河矿区 

分 类 号：P634.5[天文地球—地质矿产勘探]