石油与天然气地质
石油與天然氣地質
석유여천연기지질
OIL & GAS GEOLOGY
2014年
5期
696-703
,共8页
龙胜祥%李辛子%叶丽琴%陈纯芳
龍勝祥%李辛子%葉麗琴%陳純芳
룡성상%리신자%협려금%진순방
地质条件%煤层气%含煤盆地%国内外
地質條件%煤層氣%含煤盆地%國內外
지질조건%매층기%함매분지%국내외
geological condition%coalbed methane%coal bearing basin%home and broad
美国、澳大利亚和中国的含煤盆地均很多，但煤层气地质条件差异很大。其中多数盆地地质条件较差，仅少数盆地煤层气资源富集，储层特征和构造、水文条件优越，勘探开发效果好。在圣胡安、沁水等勘探效果良好的盆地内，不同区带（地区）也存在巨大差异。根据煤层气地质条件、富集成藏模式以及开发技术条件，可分为中-高煤阶和低煤阶类型。利用建立的煤层气分类对比方法体系，对美国中-低煤阶型圣胡安盆地、低煤阶型粉河盆地、澳大利亚复合煤阶型鲍温-苏拉特盆地、中国高煤阶型沁水盆地、复合煤阶型鄂尔多斯盆地以及这些盆地中主要区带（地区）进行了对比分析，发现我国的鄂尔多斯、沁水盆地等最具潜力的盆地与圣胡安、鲍温-苏拉特盆地差异较大。樊庄、韩城、延川南、织金等区块仅与圣胡安区3带等相似。因此，我国煤层气地质条件和可采性相对较差，近、中期可有效勘探开发的目标不多。从战略层面看，不宜把中、长期发展目标定得太高；从战术层面看，要重视差异性分析，预测资源甜点，优选目标，并针对性部署勘探开发工作，更要注意控制速度。
美國、澳大利亞和中國的含煤盆地均很多，但煤層氣地質條件差異很大。其中多數盆地地質條件較差，僅少數盆地煤層氣資源富集，儲層特徵和構造、水文條件優越，勘探開髮效果好。在聖鬍安、沁水等勘探效果良好的盆地內，不同區帶（地區）也存在巨大差異。根據煤層氣地質條件、富集成藏模式以及開髮技術條件，可分為中-高煤階和低煤階類型。利用建立的煤層氣分類對比方法體繫，對美國中-低煤階型聖鬍安盆地、低煤階型粉河盆地、澳大利亞複閤煤階型鮑溫-囌拉特盆地、中國高煤階型沁水盆地、複閤煤階型鄂爾多斯盆地以及這些盆地中主要區帶（地區）進行瞭對比分析，髮現我國的鄂爾多斯、沁水盆地等最具潛力的盆地與聖鬍安、鮑溫-囌拉特盆地差異較大。樊莊、韓城、延川南、織金等區塊僅與聖鬍安區3帶等相似。因此，我國煤層氣地質條件和可採性相對較差，近、中期可有效勘探開髮的目標不多。從戰略層麵看，不宜把中、長期髮展目標定得太高；從戰術層麵看，要重視差異性分析，預測資源甜點，優選目標，併針對性部署勘探開髮工作，更要註意控製速度。
미국、오대리아화중국적함매분지균흔다，단매층기지질조건차이흔대。기중다수분지지질조건교차，부소수분지매층기자원부집，저층특정화구조、수문조건우월，감탐개발효과호。재골호안、심수등감탐효과량호적분지내，불동구대（지구）야존재거대차이。근거매층기지질조건、부집성장모식이급개발기술조건，가분위중-고매계화저매계류형。이용건립적매층기분류대비방법체계，대미국중-저매계형골호안분지、저매계형분하분지、오대리아복합매계형포온-소랍특분지、중국고매계형심수분지、복합매계형악이다사분지이급저사분지중주요구대（지구）진행료대비분석，발현아국적악이다사、심수분지등최구잠력적분지여골호안、포온-소랍특분지차이교대。번장、한성、연천남、직금등구괴부여골호안구3대등상사。인차，아국매층기지질조건화가채성상대교차，근、중기가유효감탐개발적목표불다。종전략층면간，불의파중、장기발전목표정득태고；종전술층면간，요중시차이성분석，예측자원첨점，우선목표，병침대성부서감탐개발공작，경요주의공제속도。
America,Australia and China all have many coal bearing basins with greatly different geological conditions of coalbed methane .Among these basins ,most are poor in geological conditions of coalbed methane ,excerpt for a few which have rich coalbed methane resources , excellent reservoir characteristics , structural and hydrological conditions , thus are successful in exploration and development .Even in well developed basins ,such as San Juan Basin and Qinshui Basin ,the geology conditions are also greatly different in different regions .According to CBM geological conditions , accumulation models and development conditions ,these basins can be divided into mid-high-rank coal basins and low-rank coal basins . A CBM classification and correlation method system was established to perform comparative analysis among the mid -rank coal in San Juan Basin and low-rank coal in Powder River Basin of America ,complex rank coal in Bowen/Surat Basin of Australia ,high rank coal in Qinshui Basin and complex rank coal in Ordos Basin of China ,as well as the main zones ( are-as) in these basins .It was found that the most prospective Ordos Basin and Qinshui Basin in China are greatly different with San Juan Basin ,Bowen/Surat Basin .Fanzhuang ,Hancheng ,south Yanchuan ,Zhijin and other blocks are only similar to the Zone-3 in San Juan Basin ’ s.It is therefore concluded that the coalbed methane geological conditions and recover-ability are relatively poor in the coal basins in China ,and effective exploration and development targets are different to find in the near and medium terms .So from a strategic perspective ,the long-term development goals should not be set too high.And from a tactical perspective ,attentions should be paid to analyzing difference ,forecasting resources sweet spot , picking the favorable target ,arranging targeted deployment on exploration and development ,and controlling development speed .
