贵州金佳矿区复杂地层煤层气钻完井工艺研究
Research on CBM drilling and completion technology of complicated strata in Jinjia Mining Area of Guizhou Province
-
摘要: 以金佳矿区煤层气井为例，总结煤系地层岩性变化特征及对煤层气井钻完井质量控制的影响，优化钻井施工参数，促进钻井煤层的低伤害及高效化。工程实践表明：金佳矿区煤层气勘查区煤层及顶底板岩性复杂，以砂岩、泥岩、砂质泥岩、泥质砂岩为主，煤层及顶底板组合分布可分为5种结构模型；勘查区龙潭组含煤地层适合采取20～30 kN的中低钻压、15～20 L/s的小排量、中高转速钻进，避免钻压过大造成井斜角过大；固井施工的水泥浆密度不易超过1.85 g/cm3，避免水泥浆密度过大侵入近井地带造成储层伤害。Abstract: Taking coal-bed methane wells in Jinjia Mining Area as an example, the characteristics of coal-measure formation lithology changes and their influence on the quality control of CBM well drilling and completion are summarized, drilling construction parameters are optimized, and the drilling of coal seams is less harmful and more efficient. Engineering practice shows that the coal seams and roof and floor lithologies in the coalbed methane exploration area of Jinjia Mining Area are complex, mainly sandstone, mudstone, sandy mudstone, and argillaceous sandstone. The combined distribution of coal seams and roof and floor can be divided into 5 structural models; the coal-bearing strata of Longtan Formation in exploration area is suitable for drilling with medium-low drilling pressure of 20-30 kN, small displacement of 15-20 L/s, and medium-high speed drilling to avoid excessive drilling pressure caused by excessive well inclination; cement slurry density for cementing construction is not easy to exceed 1.85 g/cm3 to avoid the excessive density of cement slurry from invading the near-well zone and causing reservoir damage.
-
-
[1] 高弟，秦勇，易同生．论贵州煤层气地质特点与勘探开发战略[J]．中国煤炭地质，2009，21（3）：20－23. GAO Di, QIN Yong, YI Tongsheng. Geological condition, exploration and exploitation strategy of coal-bed methane resources in Guizhou, China[J]. Coal Geology of China, 2009, 21（3）: 20-23.
[2] 徐宏杰，桑树勋，杨景芬，等．贵州省煤层气勘探开发现状与展望[J]．煤炭科学技术，2016，44（2）：1－7. XU Hongjie, SANG Shuxun, YANG Jingfen, et al. Status and expectation on coalbed methane exploration and development in Guizhou Province[J]. Coal Science and Technology, 2016, 44（2）: 1-7.
[3] 郭晨，卢玲玲．黔西煤层气成藏特性空间分异及其对开发的启示[J]． 煤炭学报，2016，41（8）：2006. GUO Chen, LU Lingling. Spatial distribution and variation of coalbed methane reservoir characteristics and its significance for CBM development in Western Guizhou[J]. Journal of China Coal Society, 2016, 41（8）: 2006.
[4] 刘贻军，曾祥洲，胡刚，等．贵州煤层气储层特征及勘探开发技术对策：以比德-三塘盆地为例[J]．煤田地质与勘探，2017，45（1）：71－74. LIU Yijun, ZENG Xiangzhou, HU Gang, et al. Characteristics and technical measures of exploration and development of coalbed methane reservoir in Guizhou Province: A case of Bide-Santang Area[J]. Coal Geology & Exploration, 2017, 45（1）: 71-74.
[5] 顾军，李林蔚，孙德兴．煤层气井井斜角对隔水层界面胶结强度影响试验[J]．煤田地质与勘探，2019，47（3）：208－216. GU Jun, LI Linwei, SUN Dexing. Experimental study on the influence of well inclination angle of coalbed methane well on the cementation strength of cement-formation interface[J]. Coal Geology & Exploration, 2019, 47（3）: 208-216.
[6] 顾军，秦磊斌，汤乃千，等．煤层气井内隔水层界面水窜通道形成演化过程[J]．中国矿业大学学报，2019， 48（1）：176－187. GU Jun, QIN Leibin, TANG Naiqian, et al. Evolution process of water channeling pathway along cement-aquifuge interface in coalbed methane well[J]. Journal of China University of Mining & Technology, 2019, 48（1）: 176-187.
[7] 陈立超，王生维，张典坤．煤层气近井煤缝壁面滤饼的结构与硬度特征及工程[J]．天然气工业，2020，40（6）：100－106. CHEN Lichao, WANG Shengwei, ZHANG Diankun. Structure and hardness characteristics of the filter cake-coal wall interface near a CBM well and its engineering significance[J]. Natural Gas Industry, 2020, 40（6）: 100-106.
[8] 陈立超，王生维，张典坤，等．固井水泥浆侵入对煤储层压裂裂缝延展的影响[J]．天然气工业，2019，39（8）：74－81. CHEN Lichao, WANG Shengwei, ZHANG Diankun, et al. Impact of cement slurry invasion on the propagation of hydraulic fractures in coal reservoirs[J]. Natural Gas Industry, 2019, 39（8）: 74-81.
[9] 徐堪社，赵永哲，杨哲，等．六盘水煤层气井牛场区块恶性漏失地层堵漏方法研究[J]．煤田地质与勘探，2018，46（2）：35－39. XU Kanshe, ZHAO Yongzhe, YANG Zhe, et al. Leaking stoppage method for formation with serious circulation loss of CBM wells in Niuchang block in Liupanshui[J]. Goal Geology & Exploration, 2018, 46（2）: 35-39.
[10] 胡焮彭，赵永哲，徐堪社，等．黔北矿区煤层顶板水平井钻井关键技术[J]．煤田地质与勘探，2020，48（1）： 227－232. HU Xinpeng, ZHAO Yongzhe, XU Kanshe, et al. The key technology for drilling horizontal well in coal seam roof in Qianbei Mining Area[J]. Coal Geology & Exploration, 2020, 48（1）: 227-232.
[11] 胡郁乐，胡晨，张恒春，等．钻头泥包原因分析及松科二井防泥包钻井液的应用[J]．煤田地质与勘探，2020，48（5）：254－261. HU Yule, HU Chen, ZHANG Hengchun, et al. Analysis of bit balling and application of the balling-preventing drilling fluid in well Songke-2[J]. Coal Geology & Exploration, 2020, 48（5）: 254-261.
[12] 陈洲亮，欧阳传湘．超低渗砂岩储层钻井液损害机理研究分析及解决方法－以库车北部构造带吐格尔明段为例[J]．科学技术与工程，2019，19（35）：166－171. CHEN Zhouliang, OUYANG Chuanxiang. Mechanism analysis and solutions of drilling fluid damage mechanism in ultra-low permeability sandstone reservoir taking Tugelming Section of the Northern Kuqa tectonic belt as an example[J]. Science Technology and Engineering, 2019, 19（35）: 166-171.
[13] 王小龙，蒋必辞，汪凯斌．矿用电磁随钻伽马测井仪标定与试验[J]．煤田地质与勘探，2019，47（5）：208－212. WANG Xiaolong, JIANG Bici, WANG Kaibin. Calibration and experiment of mine electromagnetic LWD gamma logging tool[J]. Coal Geology & Exploration, 2019, 47（5）: 208-212.
[14] 张径硕，倪小明，李阳，等．煤中不同尺度裂隙钻井液污染程度定量评价[J]．煤田地质与勘探，2020，48（5）：64－72. ZHANG Jingshuo, NI Xiaoming, LI Yang, et al. Quantitative evaluation of the contamination degree of the drilling fluid for fractures of different scale in coal[J]. Coal Geology & Exploration, 2020, 48（5）: 64-72.
-
期刊类型引用(5)
1. 于志金，徐勇，谷雨，张志鹏. 30℃下煤对不同比例CO_2-N_2混合气体吸附量差异性研究. 中国安全生产科学技术. 2023(05): 80-85 . 
百度学术
2. 罗洪浩，王德伟，吴会永，许军，刘炎昊，陈俊侠. 河南省太行山东麓煤层气成藏主控因素及有利区优选. 中国煤炭地质. 2022(01): 37-44 . 百度学术
3. 金龙哲，赵金丹，王辉，柏杨，闫康. 煤基活性炭改性及其甲烷吸附能力. 工程科学学报. 2022(04): 526-533 . 百度学术
4. 袁梅，李照平，李波波，张锐，吕晴，许石青. 酸化对煤微观结构及煤层气解吸——扩散的影响. 天然气工业. 2022(06): 163-172 . 百度学术
5. 李银艳，杨志远，鞠晓茜，吴卓卓. 构造煤吸附CH_4的特征及其吸附热力学研究. 煤炭技术. 2022(12): 140-144 . 百度学术
其他类型引用(3)
计量
- 文章访问数: 31
- HTML全文浏览量: 0
- PDF下载量: 15
- 被引次数: 8
下载:
