煤田地质与勘探
煤田地質與勘探
매전지질여감탐
COAL GEOLOGY & EXPLORATION
2014年
4期
100-102
,共3页
松软煤层%煤层气%水平对接井%筛管完井%煤层气开发
鬆軟煤層%煤層氣%水平對接井%篩管完井%煤層氣開髮
송연매층%매층기%수평대접정%사관완정%매층기개발
soft coal seam%coalbed methane%horizontally-intersected well%well completion with screen pipe%CBM development
松软煤层中开发煤层气，由于地质条件复杂、井壁不稳定、产气通道易堵塞等，致使松软煤层中水平对接井的抽采效果较差。重点研究了松软煤层水平对接井筛管完井工艺技术，包括筛管选型、配套设备机具和下管工艺技术等。通过在晋城成庄区块现场应用，3口水平井煤层段下入筛管总长度达到1466 m，取得了良好的应用效果。
鬆軟煤層中開髮煤層氣，由于地質條件複雜、井壁不穩定、產氣通道易堵塞等，緻使鬆軟煤層中水平對接井的抽採效果較差。重點研究瞭鬆軟煤層水平對接井篩管完井工藝技術，包括篩管選型、配套設備機具和下管工藝技術等。通過在晉城成莊區塊現場應用，3口水平井煤層段下入篩管總長度達到1466 m，取得瞭良好的應用效果。
송연매층중개발매층기，유우지질조건복잡、정벽불은정、산기통도역도새등，치사송연매층중수평대접정적추채효과교차。중점연구료송연매층수평대접정사관완정공예기술，포괄사관선형、배투설비궤구화하관공예기술등。통과재진성성장구괴현장응용，3구수평정매층단하입사관총장도체도1466 m，취득료량호적응용효과。
During the development of coalbed methane(CBM) in soft coal seam, the complicated geological conditions , the borehole sidewall instability and blocking of gas -producing channels lead to poor effect of gas drainage with horizontally-intersected wells in soft coal seam. The well completion technology directly affects the drainage effect of CBM, and in this paper, the well completion technology by screen pipe for horizontally-intersected well is studied, including selection of the screen pipe, development of equipment and screen pipe running operation technique, etc. Through field application in Jincheng-Chengzhuang coal mines, three horizontally-intersected wells were completed with a total length of 1466m screen pipe, and its application effect is good.
