CBM reservoir parameter measurement based on the interference testing technology
-
摘要: 为弥补传统注入压降试井测试结果以点代面的问题,提出基于煤层气干扰试井的储层参数测试方法,阐述了其基本原理、测试方法和数据分析依据。以沁水盆地南部1口激动井和4口检测井组成的井组为例,结合该井组前期注入压降法、历史拟合法测试结果,并与干扰试井测试结果进行对比分析。结果表明,煤层气干扰试井法各井测点渗透率接近利用排采数据的历史拟合值,且高于注入压降测值,但3种方法获得数据处于同一数量级之内;煤层气干扰试井技术方法可以反映试验5口井的区域渗透率分布特征,其区域东南方向渗透率较大,即为主裂隙发育方向。结合3种方法测得的参数值对比可知,煤层气干扰试井法既可获得离散点的参数值,又可以获得区域井组的连通性和优势渗流方向,结果有助于认识区域储层参数,为进一步的井网和排采井的布置提供比较直接的数据依据。Abstract: In order to remedy the problem of point replacing surface in the results of traditional injection pressure drop test, a CBM reservoir parameter measurement method based on interference well testing was proposed. The basic principle, test method and data analysis basis were described. Taking a well group composed of a stimulation well and 4 observation wells in the south of Qinshui basin as example, the results of earlier injection pressure drop and historical fitting of the well group were compared to the results of interference well testing and analyzed. The results showed that the permeability of different measurement points of the well group approximated the permeability from historical fitting using production data and was higher than the permeability measured from injection pressure drop, but the permeability obtained by the three methods was of the same order of magnitude. The CBM interference well testing technology may reflect the characteristics of the regional permeability distribution of the tested well group consisting of 5 wells, at the southeast direction in the region, i.e the direction of development of the principal fracture, the permeability was higher. By combining the parameter values measured from the three methods, it can be known that the CBM interference well testing can get not only the parameter value of the discrete points, but also the regional connectivity of well group and advantageous seepage direction, the results are helpful to know the regional reservoir parameters, provide direct data basis for the layout of further well grid and production wells.
-
-
[1] 张新民,庄军,张遂安. 中国煤层气地质与资源评价[M]. 北京:科学出版社,2002:1-65. [2] 张新民,赵靖舟,李建武,等. 中国煤层气技术可采资源潜力[M]. 北京:科学出版社,2010:40-45. [3] 刘能强. 实用现代试井解释方法[M]. 北京:石油工业出版社, 2003. [4] 陈志胜,廉有轩. 煤层气井注入压降试井测试中有关技术问题探讨[J]. 煤田地质与勘探,2003:31(4):23-25. CHEN Zhisheng, LIAN Youxuan. Discussion on technical problems for injection/fall-off well test in the coalbed methane well[J]. Coal Geology & Exploration,2003:31(4):23-25.
[5] 陈志胜. 煤层气井微破裂试验测试技术及应用[J]. 中国矿业大学学报,2003,32(1):53-56. CHEN Zhisheng. Test technique for short-break down test in CBM well and its application[J]. Journal of China University of Mining & Technology,2003,32(1):53-56.
[6] 刘立军,王立中,张增惠,等. 煤层气井注入压降试井技术研究[J]. 天然气工业,2004,24(5):79-81. LIU Lijun,WANG Lizhong,ZHANG Zenghui,et al. Study on pressure-drop well test with injection of coalbed gas well[J]. Natural Gas Industry,2004,24(5):79-81.
[7] 吴晓东,师俊峰,席长丰. 煤层渗透率敏感性及其对煤层气开发效果的影响[J]. 天然气工业,2008,28(7):27-29. WU Xiaodong,SHI Junfeng,XI Changfeng. The permeability sensitivity of coal seam and its influence on the development of coalbed methane[J]. Natural Gas Industry,2008,28(7):27-29.
[8] 李鑫,景兴鹏. 基于注入压降法的煤层气井裸眼和套管射孔后测试试验研究[J]. 煤炭工程,2014,46(11):89-91. LI Xin,JING Xingpeng. Experiment study on test of coalbed methane open well and post perforated casing based on injection pressure drop method[J]. Coal Engineering,2014,46(11):89-91.
[9] 景兴鹏. 不同完井方式下注入/压降煤储层参数法测试结果对比[J]. 煤炭科学技术,2015,43(2):33-37. JING Xingpeng. Comparison on injection and pressure drop measuring and test results of different well completion type coal reservoir parameters[J]. Coal Science and Technology,2015, 43(2):33-37.
[10] 景兴鹏. 沁水盆地南部储层压力分布规律和控制因素研究[J]. 煤炭科学技术,2012,40(2):116-120. JING Xingpeng. Study on pressure distribution law and control factors of coalbed methane reservoir in south part of Qinshui basin[J]. Coal Science and Technology,2012,40(2):116-120.
[11] 孙茂远,黄盛初. 煤层气开发利用手册[M]. 北京:煤炭工业出版社,1998. [12] 杨怀成,钱卫明,房国平,等. 煤层气井注入压降测试工艺技术与进展[J]. 油气藏评价与开发,2012,2(2):70-75. YANG Huaicheng,QIAN Weiming,FANG Guoping,et al. Technology of CBM wells injection/falloff test and its progress[J]. Reservoir Evaluation and Development,2012,2(2):70-75.
[13] 景兴鹏,宋永辉. 基于流体注入诊断法的煤层气试井技术研究[J]. 煤炭科学技术,2017,45(12):1-6. JING Xingpeng,SONG Yonghui. Technical research on test well of coalbed methane based on diagnostic fracture injection test method[J]. Coal Science and Technology,2017,45(12):1-6.
[14] BUNGER A P,LAKIROUHANI A,DETOURNAY E. Modelling the effect of injection system compressibility and viscous fluid flow on hydraulic fracture breakdown pressure[C]//XIE F. Rock stress and earthquake. Leiden:CRC Press/Balkema,2010:59-68.
-
期刊类型引用(4)
1. 郑永旺,崔轶男,李鑫,肖翠,郭涛,张登峰. 深层高阶煤层CO_2-ECBM技术研究与应用启示——以沁水盆地晋中地区为例. 石油实验地质. 2025(01): 143-152 . 百度学术
2. 王振至,傅雪海,潘结南,金毅,王海超. 深部储层煤层气产出影响因素. 煤田地质与勘探. 2025(02): 84-98 . 本站查看
3. 郗兆栋,唐书恒,刘忠,屈晓荣,张鹏豹,苏育飞,张迁. 宁武盆地深部煤储层地温场特征及其对含气性的影响. 煤田地质与勘探. 2024(02): 92-101 . 本站查看
4. 赵明恩,梁国栋,杨佳佳,张学宇,刘赛飞,田林,侯海海. 宏观煤岩类型和煤体结构控制下的孔隙结构特征研究. 中国煤炭地质. 2024(10): 1-5 . 百度学术
其他类型引用(2)
计量
- 文章访问数: 74
- HTML全文浏览量: 8
- PDF下载量: 12
- 被引次数: 6