复杂油气藏
複雜油氣藏
복잡유기장
COMPLEX HYDROCARBON RESERVOIRS
2014年
2期
47-50
,共4页
张志军%姜汉桥%余春玲%梁彬
張誌軍%薑漢橋%餘春玲%樑彬
장지군%강한교%여춘령%량빈
页岩气%生产机理%产能%启动压力梯度%滑脱效应%应力敏感系数%表皮系数
頁巖氣%生產機理%產能%啟動壓力梯度%滑脫效應%應力敏感繫數%錶皮繫數
혈암기%생산궤리%산능%계동압력제도%활탈효응%응력민감계수%표피계수
shale gas%production mechanism%productivity%start-up pressure gradient%slippage effect%stress sensitivi-ty factor%skin factor
根据页岩气渗流机理,分析了页岩气在双重介质中的渗流过程。依据常规双重介质模型,综合考虑了滑脱效应、应力敏感效应及启动压力梯度对页岩气藏产能的影响,建立了考虑解吸、扩散渗流综合作用的页岩气渗流模型,并求得地层压力分布。运用实例分析了页岩气藏产能的影响因素,确定了不同因素对气井产能影响的差异。研究结果总结了页岩气藏单井产能的影响因素,对页岩气藏开发提出了建议。
根據頁巖氣滲流機理,分析瞭頁巖氣在雙重介質中的滲流過程。依據常規雙重介質模型,綜閤攷慮瞭滑脫效應、應力敏感效應及啟動壓力梯度對頁巖氣藏產能的影響,建立瞭攷慮解吸、擴散滲流綜閤作用的頁巖氣滲流模型,併求得地層壓力分佈。運用實例分析瞭頁巖氣藏產能的影響因素,確定瞭不同因素對氣井產能影響的差異。研究結果總結瞭頁巖氣藏單井產能的影響因素,對頁巖氣藏開髮提齣瞭建議。
근거혈암기삼류궤리,분석료혈암기재쌍중개질중적삼류과정。의거상규쌍중개질모형,종합고필료활탈효응、응력민감효응급계동압력제도대혈암기장산능적영향,건립료고필해흡、확산삼류종합작용적혈암기삼류모형,병구득지층압력분포。운용실례분석료혈암기장산능적영향인소,학정료불동인소대기정산능영향적차이。연구결과총결료혈암기장단정산능적영향인소,대혈암기장개발제출료건의。
According to the percolation mechanism of shale gas ,the percolation process in the dual medium was ana-lyzed.On the basis of conventional dual medium model ,comprehensively considering the influence of slippage effect ,stress sensitivity and the start -up pressure gradient on the productivity of shale gas reservoir ,a dual medium model considering desorption and diffusion seepage was established .Thus,the formation pressure distribution was obtained .In the examples, differences in influencing factors on shale gas productivity were determined .The factors affecting the productivity of single shale gas well were summarized ,and some advices were proposed to the shale gas reservoir development .