矿业科学学报2026，Vol.11Issue(1)：90-102,13.DOI:10.19606/j.cnki.jmst.2025015
吐哈盆地中低阶深部煤储层地质特征及有利层段优选——以柯新1H井为例
Geological characteristics and optimal selection of favorable reservoir of deep and middle-low rank coal reservoirs in Turpan-Hami Basin—a case study of Kexin1H well
摘要
Abstract
The optimal selection of favorable reservoir is a fundamental and necessary task after logging and before fracturing operations,which can help improve the success rate of coalbed methane explora-tion.The target coalbed reservoir of the first coalbed methane exploration well,Kexin1H,in the Tur-pan-Hami Basin is located at a depth of 3 163～3 350 meters.The geological characteristics analysis and optimal selection of a favorable reservoir of coalbed methane are of great significance for subsequent exploration and development.This study conducted more than 270 tests on coal quality,coal structure,in-suit gas content,as well as isothermal adsorption,porosity,permeability,stress sensitivity,rock mechanics,and other parameters,providing a comprehensive understanding on the deep coalbed meth-ane reservoir in the Turpan-Hami Basin and a deep analysis on optimal selection of favorable reservoir.The results show that:① coals in the Xishanyao Formation drilled by Kexin1H well have a vitrinite re-flectance ranging from 0.64%to 1.02%,with vitrinite content ranging from 63.40%to 89.57%.Based on the industrial analysis results of coal-rock,it is believed that the main coal seam is a long-flame coal or non-caking coal reservoir;② based on the measurements of closed-core and isothermal adsorption,the gas saturation of coal rock reservoir ranges from 1.47 to 1.98.The three-axis elastic modulus and Poisson's ratio of coal rock are between 3.594 GPa to 7.795 GPa and 0.17 to 0.27,re-spectively.The coal structure is mainly fractured coal and granular coal.The coal rock reservoir be-longs to the over-saturated,medium-low rank,fractured-soft,low-permeability,and strong stress-sen-sitive reservoir;③ an evaluation index system for the optimal selection of a favorable reservoir in a sin-gle well based on fuzzy analytic hierarchy process was developed,which includes three main categories of primary indicators and twelve secondary indicators.It is believed that the producibility of the coalbed reservoir in the third section of Well Kexin 1H is high in production potential.However,attention should be paid to the impact of coal fines during engineering operations.关键词
煤层气/多煤层/碎软储层/有利储层/吐哈盆地Key words
coalbed methane/multiple coal seams/soft and fractured reservoir/favorable reservoir/Turpan-Hami Basin分类
矿业与冶金引用本文复制引用
陈旋,张华,李鑫,苟红光,程祎,韩长城,刘源,张亦婷..吐哈盆地中低阶深部煤储层地质特征及有利层段优选——以柯新1H井为例[J].矿业科学学报,2026,11(1):90-102,13.基金项目
新疆维吾尔自治区重点研发计划(2024B03002) （2024B03002）
新疆维吾尔自治区"天山英才"科技创新领军人才(2022TSYCLJ0070) （2022TSYCLJ0070）
新疆维吾尔自治区"天山英才"青年科技拔尖人才(2022TSYCCX0043) （2022TSYCCX0043）
中国石油天然气股份有限公司攻关性应用性科技专项(2023ZZ18) （2023ZZ18）
中国石油天然气股份有限公司油气和新能源分公司科技项目(2023YQX10109) （2023YQX10109）
