准噶尔盆地东南缘煤层气勘探目标优选

发布时间：2018-02-25 23:36

本文关键词： 煤层气成藏条件选区评价西山窑组准噶尔盆地　出处：《特种油气藏》2017年02期 　论文类型：期刊论文

【摘要】：为提高"十三五"新疆煤层气的勘探效率,系统收集了准噶尔盆地东南缘(准南煤田与准东煤田)煤层气相关地质资料,从煤层厚度、含气性、顶板岩性及水文地质等条件出发,讨论了研究区煤层气富集成藏条件,并得出该区已具备形成大型煤层气藏的初步结论。此外,从资源条件、储层条件与保存条件出发,优选煤层含气量、煤层厚度、镜质组含量、煤化作用程度以及兰氏体积等12个三级评价指数,建立了适用于该区煤层气选区评价的数学模型,优选出阜康、硫磺沟、齐古等7个煤层气勘探有利区,并对其煤层气勘探潜力进行排序,为准噶尔盆地东南缘煤层气下一步勘探部署提供地质依据。
[Abstract]:In order to improve the exploration efficiency of coalbed methane in Xinjiang during the 13th Five-Year Plan, the related geological data of coalbed methane in the southeast margin of Junggar Basin (quasi-southern coalfield and Jundong coalfield) were collected systematically, from the coal seam thickness and gas-bearing property. Based on roof lithology, hydrogeology and other conditions, this paper discusses the conditions of coalbed methane rich and integrated reservoir in the study area, and draws a preliminary conclusion that large coalbed methane reservoirs have been formed in this area. In addition, starting from the resource conditions, reservoir conditions and preservation conditions, Twelve tertiary evaluation indexes, such as gas content, thickness of coal seam, vitrinite content, coalification degree and Lansch volume, were established. A mathematical model was established for the evaluation of coal bed methane in this area, and Fukang and Sulphur trench were selected. There are 7 favorable areas for coalbed methane exploration in Qigu, and their exploration potential is sorted, which provides geological basis for the next exploration and deployment of coalbed methane in the southeast margin of Junggar Basin.
【作者单位】：中国地质大学(北京);中国石油海外勘探开发公司;中国石油长庆油田分公司;
【基金】：国家科技重大专项“准噶尔盆地南缘中低煤阶煤层气赋存机制及资源可采性”(2016ZX0543001-004) 中国地质调查局战略选区项目“准东地区低煤阶煤层气成藏条件与控制因素研究”(1211302108025-2-3)
【分类号】：P618.13

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