库车坳陷侏罗系克孜勒努尔组深部煤层特征及启示

赵亚汶; 谢会文; 严德天; 王斌; 易艳; 李玲; 杨果; 程旺明

doi:10.19509/j.cnki.dzkq.tb20240785

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库车坳陷侏罗系克孜勒努尔组深部煤层特征及启示

更新时间：2026-11-05

- 库车坳陷侏罗系克孜勒努尔组深部煤层特征及启示
- Bulletin of Geological Science and Technology Vol. 44, Issue 5, Pages: 53-64(2025)
- 作者机构：
  
  1. 中国石油塔里木油田分公司
  2. 中国石油天然气集团有限公司超深层复杂油气藏勘探开发技术研发中心
  3. 新疆超深油气重点实验室
  4. 中国地质大学(武汉)资源学院
- 作者简介：
- 基金信息：
- DOI：10.19509/j.cnki.dzkq.tb20240785
  CLC： P618.13
- Online First：15 September 2025，
  
  Published：15 September 2025
- 稿件说明：
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赵亚汶, 谢会文, 严德天, et al. 库车坳陷侏罗系克孜勒努尔组深部煤层特征及启示[J]. Bulletin of Geological Science and Technology, 2025, 44(5): 53-64.
DOI：

赵亚汶, 谢会文, 严德天, et al. 库车坳陷侏罗系克孜勒努尔组深部煤层特征及启示[J]. Bulletin of Geological Science and Technology, 2025, 44(5): 53-64. DOI： 10.19509/j.cnki.dzkq.tb20240785.

摘要

目前库车坳陷侏罗系克孜勒努尔组煤层的研究主要集中在浅部，有关深部煤层的研究较少。针对库车坳陷侏罗系克孜勒努尔组煤层煤岩特征、储层物性和含气性不明等问题，依托钻井资料，采用地震资料处理、连井分析、取样观察及气测孔渗、等温吸附实验等方法，对该区块煤层的几何分布特征、煤岩煤质特征、储层物性、吸附性和含气量等方面进行了研究。研究表明：（1）研究区克孜勒努尔组深部煤层以原生结构为主，有机显微组分以镜质组为主，平均占比达62.20%，有机质类型均为Ⅲ型，中煤阶；整体属于中高挥发分、特低硫分、特低-低灰分的煤层；（2）深部煤层的气测孔隙度平均值为7.10%，平均渗透率为0.685×10

-3

μm

，其甲烷的吸附能力受镜质体反射率、水分含量和灰分产率的影响大；（3）库车坳陷侏罗系克孜勒努尔组埋深2 000～5 000 m的煤层主要分布在北部构造带内，面积达2 800 km

，单层厚度最高可达22 m，实测深部煤层平均含气量11.77 m

/t，资源潜力巨大。对比浅部煤层，研究区克孜勒努尔组深部煤层受埋深影响明显，成熟度高并已规模产气，具备勘探潜力；含水饱和度是影响克孜勒努尔组煤层含气性的关键因素；含水饱和度低且有利于游离气富集的迪北缓坡平台将是库车坳陷煤岩气的有利目标区。

Abstract

ObjectiveCurrent research on the Jurassic Kizilnur Formation coal seams in the Kuqa Depression mainly focuses on shallow sections

with limited study of deep coal seams. MethodsTo address unknown coal-rock characteristics

reservoir properties

and gas content in the Jurassic Kizilnur Formation coal seams

the geometric distribution characteristics

the characteristics of coal rock and coal quality

reservoir properties

adsorption properties

and gas content of the coal seam in this block were studied based on the following methods

such as drilling data

seismic data processing

wellbore analysis

sampling observation

gas measurement

pore permeability

and isothermal adsorption experiments. ResultsThe deep coal seams in the research area are predominantly composed of primary structures

with vitrinite as the major organic component (average 62.2%)

indicating type Ⅲ organic matter. The coal is of medium rank

generally characterized by medium-to-high volatile matter

ultra-low sulfur

and low to very low ash content. The average gas porosity is 7.10%

and the average permeability is 0.685×10−3 μm2. Furthermore

methane adsorption capacity is strongly influenced by macrinite reflectance

water content

and ash yield. In the Kuqa Depression

deep coal seams occur at burial depths of 2 000 –5 000 m

are mainly distributed in the Northern Structural Zone

cover about 2 800 km2

with a maximum single-layer thickness of 22 m. The average gas content of the deep coal seam measured is 11.77 m3/t

indicating substantial resource potential. ConclusionCompared with shallow coal seams

the deep coal seams of the Kezilnur Formation in the study area are more strongly affected by burial depth

exhibit high maturation

and have achieved large-scale gas production

underscoring their exploration potential. Water saturation emerges as a critical factor controlling gas content in these seams. Notably

the Dibei gentle-slope platform in the Kuqa Depression offers particular advantages for CBM extraction due to favorable hydrological and geological attributes.

关键词

Keywords

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