云南老厂多煤层储层压力和含气量对开发层系优选
Coal Technology(2020)
Abstract
研究区位于滇东黔西地区,发育20~53套煤层,为了能优选主力开发层系,探讨了多煤层储层压力和含气量特征,主力煤层有4套,埋深在44.28~1 174.62 m,平均为736.70 m.煤层储层压力在1.21~12.41 MPa,平均为7.26 MPa;总体处于正常储层压力状态,为常压储层.各煤层含气量在0.70~24.20 m3/t,平均为10.43 m3/t.结果 表明C7+8、C13煤为常压储层,C16煤为高压储层,C19煤为欠压储层;C13煤合气量最高,C19煤含气量相对最低,综合评价认为C7+8、C13、C16煤层作为一个开发层系,C19煤层作为接替层系.
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