發(fā)布時(shí)間：2019-07-08 16:57

【摘要】：致密油是繼頁巖氣之后全球非常規(guī)油氣勘探開發(fā)的又一新熱點(diǎn),被中國(guó)石油界廣泛關(guān)注,但目前對(duì)致密油的定義還存在諸多分歧�；诙鯛柖嗨古璧匮娱L(zhǎng)組致密油特征分析,從致密儲(chǔ)層物性、可動(dòng)流體等方面對(duì)致密油定義進(jìn)行深入研究,綜合勘探開發(fā)成果確定延長(zhǎng)組致密油滲透率界限,進(jìn)而探討致密油的定義標(biāo)準(zhǔn)。研究結(jié)果表明,鄂爾多斯盆地延長(zhǎng)組致密油成藏條件良好,主力層系為長(zhǎng)6、長(zhǎng)7、長(zhǎng)8及長(zhǎng)9油層組,盆地中部及南部深湖相沉積發(fā)育區(qū)是最有利的致密油勘探區(qū)。綜合分析測(cè)井、物性、可動(dòng)流體、主流喉道半徑、啟動(dòng)壓力梯度、原油粘度、壓力系數(shù)以及試油試采等資料,提出利用致密油儲(chǔ)層六參數(shù)法對(duì)鄂爾多斯盆地延長(zhǎng)組儲(chǔ)層分類標(biāo)準(zhǔn)進(jìn)行調(diào)整,將延長(zhǎng)組致密油滲透率界定為小于0.5×10~(-3)μm~2,主要包括致密砂巖油和頁巖油。其他盆地或油田應(yīng)結(jié)合實(shí)際地質(zhì)特征及勘探開發(fā)實(shí)踐對(duì)致密油進(jìn)行定義。
[Abstract]:Tight oil is another new hot spot in unconventional oil and gas exploration and development in the world after shale gas, which has been widely concerned by the Chinese oil industry, but there are still many differences in the definition of tight oil. Based on the analysis of tight oil characteristics of Yanchang formation in Ordos Basin, the definition of tight oil is deeply studied from the aspects of tight reservoir physical properties and movable fluid. The permeability limit of tight oil of Yanchang formation is determined by comprehensive exploration and development results, and then the definition standard of tight oil is discussed. The results show that the tight oil accumulation conditions of Yanchang formation in Ordos Basin are good, and the main strata are Chang 6, Chang 7, Chang 8 and Chang 9. The sedimentary development area of deep lacustrine in the middle and south of the basin is the most favorable tight oil exploration area. Based on the comprehensive analysis of logging, physical properties, movable fluid, mainstream throat radius, starting pressure gradient, crude oil viscosity, pressure coefficient and oil test and production test, it is proposed to adjust the reservoir classification standard of Yanchang formation in Ordos Basin by using the six-parameter method of tight oil reservoir. The tight oil permeability of Yanchang formation is defined as less than 0.5 脳 10 ~ (- 3) 渭 m 鈮，

本文編號(hào)：2511739