發(fā)布時間：2018-06-02 05:05

  本文選題：碎軟煤層 + 地面煤層氣�。� 參考：《煤田地質(zhì)與勘探》2017年04期

【摘要】：針對碎軟煤層地面煤層氣難以抽采,水平井鉆進容易塌孔的問題,在借鑒頁巖氣和致密氣開發(fā)先進技術(shù)的基礎(chǔ)上,研究碎軟低滲煤層頂板分段壓裂水平井技術(shù)。通過優(yōu)化煤層頂板水平井鉆進、定向射孔和分段壓裂等工藝流程,從地面抽采碎軟煤層中的瓦斯氣體。運用該技術(shù)在安徽淮北蘆嶺井田開展了LG01水平井組試驗。試驗結(jié)果表明:LG01水平試驗井組日產(chǎn)氣量超過1.0×10~4 m~3,與同一井田的壓裂直井相比,相當(dāng)于4口以上直井的產(chǎn)量,實現(xiàn)了碎軟煤層從地面高效抽采煤層氣的目的。
[Abstract]:In view of the problem that it is difficult to extract coal bed methane on the ground of broken soft coal seam and easy to collapse in horizontal well drilling, based on the advanced development technology of shale gas and dense gas, the technology of broken soft low permeability coal seam roof fracturing horizontal well is studied. By optimizing the process of horizontal well drilling, directional perforation and fracturing, gas in soft coal seam is extracted from the ground. The LG01 horizontal well group test was carried out in the Luling mine field, Huaibei, Anhui Province. The test results show that the daily gas production of the 1: LG01 level test well group is more than 1.0 脳 10 ~ (4) m ~ (-1), which is equivalent to the output of more than 4 straight wells compared with the fracturing vertical well in the same well field, thus realizing the purpose of highly efficient extraction of coalbed methane from the ground by broken soft coal seam.
【作者單位】： 中煤科工集團西安研究院有限公司;
【基金】：國家科技重大專項項目(2011ZX05064)~~
【分類號】：TD712.6
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本文編號：1967529