油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
2013年
2期
66-70
,共5页
孟贵希%赵景辉%贺小黑%周国文%杨媛媛%张蓉蓉
孟貴希%趙景輝%賀小黑%週國文%楊媛媛%張蓉蓉
맹귀희%조경휘%하소흑%주국문%양원원%장용용
含气量%分布特征%灰分产率%陡坡带%埋深%煤层顶板
含氣量%分佈特徵%灰分產率%陡坡帶%埋深%煤層頂闆
함기량%분포특정%회분산솔%두파대%매심%매층정판
gas content%distribution characteristics%ash content%steep slope zone%depth of coal seam%coal roof
对沁水盆地和顺区块13口煤层气参数井和32口煤田钻孔的含气量实验数据统计分析,发现单井含气量普遍变化较大,煤的灰分产率控制了单井15号煤层含气量的变化。1000 m以浅太原组15号煤层单井平均含气量分布与煤层埋深相关关系不明显,受构造陡坡带影响较大;深部随埋深加深,含气量有增大的趋势。陡坡带、顶板泥岩和煤层厚度共同控制15号煤层含气量平面上的变化。
對沁水盆地和順區塊13口煤層氣參數井和32口煤田鑽孔的含氣量實驗數據統計分析,髮現單井含氣量普遍變化較大,煤的灰分產率控製瞭單井15號煤層含氣量的變化。1000 m以淺太原組15號煤層單井平均含氣量分佈與煤層埋深相關關繫不明顯,受構造陡坡帶影響較大;深部隨埋深加深,含氣量有增大的趨勢。陡坡帶、頂闆泥巖和煤層厚度共同控製15號煤層含氣量平麵上的變化。
대심수분지화순구괴13구매층기삼수정화32구매전찬공적함기량실험수거통계분석,발현단정함기량보편변화교대,매적회분산솔공제료단정15호매층함기량적변화。1000 m이천태원조15호매층단정평균함기량분포여매층매심상관관계불명현,수구조두파대영향교대;심부수매심가심,함기량유증대적추세。두파대、정판니암화매층후도공동공제15호매층함기량평면상적변화。
It is found that gas content of 15# coal seam changes obviously and coal ash content controls the changes of gas content of 15# coal seam by analyzing the gas content of 13 CBM parameter wells and 32 coalfield drilling in Heshun block of Qinshui ba-sin. Above 1 000 meters, the relationship of average gas content distribution and coal seam depth is not obvious. The gas content is greatly impacted by tectonic steep slope zone. Apart from this, the deeper the coal seam depth is, the greater the gas content will be. Steep slope zone, thickness of roof mudstone and coal seam control the lateral change of gas content of 15# coal seam together.