本文關(guān)鍵詞： 碳酸鹽巖儲(chǔ)層 測(cè)井評(píng)價(jià) 裂縫評(píng)價(jià) 流體識(shí)別　出處：《西南石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：目前,油氣田勘探開(kāi)發(fā)日趨復(fù)雜化,碳酸鹽巖油氣藏已成為油氣勘探開(kāi)發(fā)的焦點(diǎn)與難點(diǎn)之一。和田河氣田奧陶系屬低孔、低滲碳酸鹽巖氣藏,儲(chǔ)集空間既有孔隙又有裂縫,導(dǎo)致儲(chǔ)層非均質(zhì)性強(qiáng),測(cè)井響應(yīng)規(guī)律性不強(qiáng),給儲(chǔ)層的測(cè)井分析與識(shí)別評(píng)價(jià)帶來(lái)了很大困難。因此,需要利用已有資料做進(jìn)一步研究,建立一套適用于研究區(qū)低孔、低滲裂縫型碳酸鹽巖氣藏的測(cè)井評(píng)價(jià)方法,以便更好的為氣田的勘探開(kāi)發(fā)服務(wù)。 以地質(zhì)規(guī)律為基礎(chǔ),結(jié)合巖心薄片鑒定及物性分析資料、試油資料對(duì)儲(chǔ)層的基本地質(zhì)特征進(jìn)行了研究。利用巖心刻度成像測(cè)井,成像測(cè)井刻度常規(guī)測(cè)井的思路,分析了裂縫的成像及常規(guī)測(cè)井響應(yīng)特征,嘗試運(yùn)用雙側(cè)向測(cè)井、自然伽馬能譜測(cè)井以及裂縫指數(shù)法識(shí)別裂縫。針對(duì)儲(chǔ)層的雙孔介質(zhì)特征,采用巖心刻度法分區(qū)、分巖性建立了基質(zhì)孔、滲模型。在裂縫識(shí)別基礎(chǔ)上,采用雙側(cè)向測(cè)井估算裂縫孔隙度,用裂縫樣品的裂縫滲透率與裂縫孔隙度回歸建立了裂縫滲透率模型。從儲(chǔ)層巖性、物性、泥質(zhì)含量以及區(qū)域構(gòu)造應(yīng)力四個(gè)方面出發(fā),討論了各種因素與裂縫發(fā)育程度的關(guān)系,并繪制了各小層裂縫分布規(guī)律圖。結(jié)合試油資料在劃分出有效儲(chǔ)層的基礎(chǔ)上,運(yùn)用多種方法開(kāi)展流體識(shí)別研究,確定了氣、水測(cè)井識(shí)別標(biāo)準(zhǔn)。 通過(guò)本論文的研究為和田河氣田奧陶系儲(chǔ)層的裂縫評(píng)價(jià)、儲(chǔ)層參數(shù)精細(xì)計(jì)算、儲(chǔ)層流體性質(zhì)識(shí)別提供了一套切實(shí)可行的方法,為氣田下一步勘探開(kāi)發(fā)提供了可靠的測(cè)井解釋依據(jù)。
[Abstract]:At present, the exploration and development of oil and gas fields are becoming more and more complicated, and carbonate reservoirs have become one of the focal points and difficulties in oil and gas exploration and development. The Ordovician Ordovician gas reservoirs in Hetianhe gas field belong to low porosity and low permeability carbonate gas reservoirs, and the reservoir space has both pores and fractures. As a result, the reservoir heterogeneity is strong and the logging response regularity is not strong, which brings great difficulties to the logging analysis and identification and evaluation of the reservoir. Therefore, it is necessary to use the existing data for further study and to establish a set of low porosity suitable for the study area. The logging evaluation method of low permeability fractured carbonate gas reservoir is presented in order to better serve the exploration and development of gas field. On the basis of geological law, combined with core slice identification and physical property analysis data, the basic geological characteristics of reservoir are studied by oil testing data. This paper analyzes the characteristics of fracture imaging and conventional logging response, and attempts to identify fractures by using dual lateral logging, natural gamma spectrum logging and fracture index method. According to the characteristics of dual pore media in reservoir, the core calibration method is used to divide the fractures. On the basis of fracture identification, fracture porosity is estimated by dual lateral logging, and fracture permeability model is established by regression of fracture permeability and fracture porosity of fracture sample. Based on four aspects of mud content and regional tectonic stress, the relationship between various factors and the degree of fracture development is discussed, and the distribution patterns of fractures in each layer are plotted. Based on the oil test data, the effective reservoir is divided. The identification standard of gas and water logging is determined by using many methods to identify fluid. The research in this paper provides a set of feasible methods for fracture evaluation, fine calculation of reservoir parameters and identification of reservoir fluid properties in the Ordovician reservoir of Hetianhe gas field. It provides a reliable well logging interpretation basis for the next exploration and development of the gas field.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13;P631.81

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