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題名 | 苗栗陸海域中新統之儲集層研究--石底層與木山層=Reservoir Study of the Miocene Formations in the Miaoli Area |
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作者 | 莊恭周; 周定芳; | 書刊名 | 探採研究彙報 |
卷期 | 20 1997.11[民86.11] |
頁次 | 頁197-215 |
分類號 | 457.2 |
關鍵詞 | 竹苗地區; 石底層; 木山層; 成岩作用; 儲集特性; Reservoir study; Shihti formation; Mushan formation; Miaoli area; |
語文 | 中文(Chinese) |
中文摘要 | 本研究針對竹苗地區中新統之石底層與木山層進行井下岩心之成岩作用與電測資 料之特性分析,期能描繪出研究區內儲集層之特性與分佈,以利本公司今後在該地區從事油 氣的探勘與開發。 石底層之儲集性質在 CBK 地區受沈積環境控制,出磺坑地區則受裂縫作 用與次生孔隙控制,儲集性質良好。鐵砧山地區受壓密作用、局部之裂縫作用與次生孔隙影 響,錦水與永和山地區則受自生性黏土礦物種類影響,儲集性質中等。寶山地區除中段砂層 因成岩作用產生次生孔隙,儲集性質稍佳,其餘砂層與青草湖、細道邦地區因岩層受力擠壓 ,孔隙率低,儲集性質均不佳。 木山層在竹苗地區均較緻密,在 CBK 地區之儲集性質受砂 岩中自生性黏土礦物種類影響,出磺坑地區除自生性黏土礦物的影響外,尚受次生孔隙與裂 縫作用控制,儲集性質良好。鐵砧山地區則受砂層之膠結作用與自生性黏土礦物控制,錦水 地區則受次生孔隙、膠結作用與裂縫作用影響,除錦水等 28 層之儲集性質較佳外,儲集性 質均屬中等。寶山、青草湖、八卦力與細道邦等地區,均因地層埋壓較深或受力擠壓,致使 岩性緻密,孔隙率低,儲集性質不佳。綜合砂層厚度、埋壓深度、孔隙率與成岩作用特性, 竹苗地區石底層與木山層儲集性質最佳之地區為海域 CBK 與陸域出磺坑地區, 其次是錦水 -- 鐵砧山 --CBE 一帶,建議在此地區尋找適宜之構造進行鑽探。 |
英文摘要 | The assessment on subsurface geology in SK-7 Field indicates that the potential of producing hydrocarbons in the South Acis structure is better than that in the North Acis structure. This is supported by the following evidences: 1.The number of coal beds in the South Acis structure is greater than that in the North Acis structure, indicating that the source rock is more abundant in the South Acis sturcture. 2.In spite that abundant hydrocarbon has been discovered from some drilled wells in the North Acis structure, the hydrocarbon is produced from different formations and, thus, the closure area for the accumulated hydrocarbon is still not possible to be accurately estimated. 3.There are three production formations in the subsurface of the South Acis structure and potentiality of producing hydrocarbon has been directly or indirectly proved by two to four drilled wells. The closure area for the production formations is 35, 40 and 12 square kilometers, distinctly, and the thickness of reservoir sandstone is 6 ∼ 13, 13 ∼ 20 and 9 ∼ 13 meters, distinctly. The accumulation of hydrocarbon is noticeable in the structure. The extension of production contract for the field will be due by the end of this year and CPC will not be obliged to spend any cost on the exploration after then. Therefore, it will not be beneficial for CPC to give up the exploration on the field before the due date of the contract. I suggest that CPC make any efforts to seek joint ventures to manage the production of the field. The purposes of seeking joint ventures are to seek more investment on the field production and to publicly validate that it is beneficial to develop the field. If CPC could make it CPC would still have chances to regain some of the spent sunk cost. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。