A method for upper and down expulsion hydrocarbon amount of overpressured sourcerock by interval transit time 下排烴分配量方法及其應(yīng)用
According the mature area of hydrocarbon sourcerock , this paper determined the gas diffusion area 根據(jù)烴源巖成熟面積確定天然氣擴(kuò)散面積。
Based on these , this paper studied deeply the main factors controlling accumulation and distribution of oil or gas and accumution models through studying types of oil or gas reservoirs and oil or gas distribution laws of f , y oil layers in the north of songliao basin . this paper pointed out sourcerocks , caprocks , faults and hydrodynamics power to be the main factors controlling oil or gas accumulation and distribution . there are - two models of oil or gas accumulating in fault - lithology or fault block traps through migrating downward under the regional caprock and oil or gas from sourcerock downward accumulating in fault - lithology or fault block traps in reservoirs upward by migrating through fau lts 在此基礎(chǔ)上,通過對(duì)松遼盆地北部扶、楊油層油氣藏類型及分布規(guī)律分析,深入研究了扶、楊油層油氣成藏與分布的主控因素和成藏模式,指出源巖、蓋層、斷裂和水動(dòng)力是松遼盆地北部扶、楊油層油氣成藏與分布的主控因素,具有被下油氣倒灌運(yùn)移于斷層?巖性或斷塊圈閉成藏和下生上儲(chǔ)天然氣沿?cái)嗔堰\(yùn)移斷層?巖性或斷塊圈閉成藏二種模式。
Based on studying the structure , sedimentation , thermodynamic , geologic stress and hydrodynamics background in the north of songliao basin , this paper studied and evaluated the sourcerock conditions , reservoir conditions , caprock conditions , trap conditions and migration and accumulation conditions of f , y oil layers 在松遼盆地北部構(gòu)造、沉積、熱力、地應(yīng)力和水動(dòng)力背景研究的基礎(chǔ)上,對(duì)扶、楊油層油氣源條件、儲(chǔ)集條件、蓋層條件、圈閉條件和運(yùn)聚條件進(jìn)行了系統(tǒng)研究與評(píng)價(jià)。
By means of the theory of gas diffusion , we divided two gas diffusion systems : k1qn ~ k1n1 + 2 and k1n1 + 2 ~ the earth surface in binbei region . based on the research , this paper estimated the diffusion losing amount of the sourcerock of k1qn and k1n1 + 2 in binbei region in the different geologic period by corrected pick ' s law , the result indicates the diffusion losing amount of the sourcerock of k1qn is 5 . 3 1011m3 and the diffusion losing amount of the sourcerock of k1n1 - 2 is 2 . 5 1011m3 , they are 34 % and 19 . 4 % of their tolal generation gas amount 再此基礎(chǔ)上,通過改進(jìn)費(fèi)克定律,對(duì)濱北地區(qū)青山口組和嫩一、二段兩套源巖各地質(zhì)時(shí)期的天然氣擴(kuò)散量進(jìn)行了估算,結(jié)果得到青山口組源巖天然氣擴(kuò)散量約為5 . 3 10 ~ ( 11 ) m ~ 3 ,嫩一、二段源巖天然氣擴(kuò)散量約為2 . 5 10 ~ ( 11 ) m ~ 3 ,分別占其總生氣量的34和19 . 4 ,表明擴(kuò)散作用是濱北地區(qū)天然氣損失的重要因素。
Therefore , qijiagulong sag , daqing placanticline , sanzhao sag and chaochang area are favorable areas to find the accumulation of oil or gas from sourcerock of qingshankou formation . sanzhao sag , gulong sag , qijia sag and heiyupao sag to be f avorable area to find the accumulation of gas from sourcerock deep 因此,在此評(píng)價(jià)的基礎(chǔ)上可得到齊家古龍凹陷、大慶長垣和三肇凹陷和朝長地區(qū)是松遼盆地北部扶、楊油層尋找青山口組油氣藏的有利地區(qū);三肇凹陷、古龍凹陷、齊家凹陷和黑魚泡凹陷是松遼盆地北部扶、楊油層尋找深層天然氣的有利地區(qū)。