页岩Ⅰ区块储层布井方案及优选
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摘要
页岩Ⅰ区块页岩气储量丰富,勘探开发前景较好。井网部署在提高单井控制储量和全区累产量中发挥着巨大作用。为了能最大限度的开发利用资源,结合该区块的地质特征,主要采用合理采气速度法、规定单井产能法、经济极限法等,确定页岩Ⅰ区块生产井井距,同时借鉴该区块已有生产井的水平段长度,最终设计出四种井网部署方案,通过数值模拟对四套开发方案进行生产预测,最后优选出一套开发方案:井距400排距400水平段长度1500m,新布39口水平井投入开发,累计产气量达211.8*108m3,采出程度为43.6%。
Shale I block with huge shale- gas reserves,have good prospect of exploration and development. The well pattern deployment plays a significant role in improving the control reserves of single well and the accumulation of the whole region.In order to maximize the development and utilization of resources,combining the geological features of the block,mainly use reasonable gas recovery rate method,the provisions of the single well production capacity,economic limits,etc. To determine the well spacing of the production well in the shale I block,at the same time,reference the horizontal length of the production well in this section,Finally,a set of development scheme is optimized: well spacing and row spacing all set at 400 meters and horizontal section length set at 1500 meters,new 39 horizontal well invest for development,the accumulated gas output reached 211. 8 * 108m3 and the recovery degree was 43. 6%.
Shale I block with huge shale- gas reserves,have good prospect of exploration and development. The well pattern deployment plays a significant role in improving the control reserves of single well and the accumulation of the whole region.In order to maximize the development and utilization of resources,combining the geological features of the block,mainly use reasonable gas recovery rate method,the provisions of the single well production capacity,economic limits,etc. To determine the well spacing of the production well in the shale I block,at the same time,reference the horizontal length of the production well in this section,Finally,a set of development scheme is optimized: well spacing and row spacing all set at 400 meters and horizontal section length set at 1500 meters,new 39 horizontal well invest for development,the accumulated gas output reached 211. 8 * 108m3 and the recovery degree was 43. 6%.
引文
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[2]王秀芝,石志良,龙胜祥,等.元坝气田开发经济合理井距研究[J].断块油气田,2012,19(3):340-342.
[3]麻成斗,等.大庆外围油田低渗透薄油层水平井开发技术应用M[].北京:石油工业出版社,2008.
[4]任科.靖边气田水平井合理工作制度研究[D].西南石油大学,2010.
[5]张波,李君,赖海涛.苏里格低渗气田井网井距计算方法探讨[J].石油化工应用,2010,29(6):42-44.
[6]汪周华,郭平,黄全华,等.大牛地低渗透气田试采井网井距研究[J].西南石油学院学报,2004,26(4):18-20.
[4]李爽,朱新佳,靳辉,等.低渗透气田合理井网井距研究[J].特种油气藏,2010,17(5):73-76.
[8]杨秀春,叶建平.煤层气开发井网部署与优化方法[J].中国煤层气,2008,5(1):13-17.
[9]桑浩田,桑树勋,周效志,等.沁水盆地南部煤层气井生产历史拟合与井网优化研究[J].山东科技大学学报,2011,30(4):58-65.
[10]胡俊坤,周志斌,李晓平.气井水平段的最优经济价值长度确定方法[J].天然气工业,2014、34(12):142-146.