本文選題：哈得遜油田 + 邊底水油藏　； 參考：《成都理工大學(xué)》2015年碩士論文

【摘要】：哈得遜油田東河砂巖油藏是邊底水油藏。利用水平井開發(fā)時,因為較充足的天然能量,造成哈得遜油藏油水兩相區(qū)內(nèi)的水平井容易產(chǎn)生底水錐進,使油水界面變形呈錐形狀上升。而在純油區(qū)邊部的水平井由于邊水的入侵使得含水率也快速的上升,這樣整體上導(dǎo)致邊底水油藏的開發(fā)見水時間短。邊底水油藏的含水上升過快,在低油價的今天必然影響油田生產(chǎn)的經(jīng)濟效益。本文針對哈得遜東河砂巖油藏水平井開發(fā)的特點,著重從以下幾個方面研究了哈得遜油田東河砂巖油藏的含水上升模式:對哈得遜東河砂巖油藏的水平井含水上升類型進行歸類,總結(jié)了哈得遜油田水平井的含水上升模式。在此基礎(chǔ)上研究了各模式的含水上升率,并預(yù)測了各模式的可采儲量。最后對各模式的含水上升機理進行研究,并針對各模式的特點提出了相應(yīng)的控水措施。通過對哈得遜東河砂巖油藏95口水平井的生產(chǎn)資料分析,將這95口井劃分為有無水采油期的井和開井見水的井兩大類,在此基礎(chǔ)上采用含水率為縱坐標、累積產(chǎn)油為橫坐標的曲線來分析含水的變化�？偨Y(jié)了哈得遜東河砂巖油藏的水平井的含水上升模式并分為6種模式。模式1:有無水采油期緩慢上升型;模式2:有無水采油期快速上升型;模式3:有無水采油期含水波動型;模式4:開井見水緩慢上升型;模式5:開井見水快速上升型;模式6:開井見水含水波動型。對哈得遜東河砂巖油藏6種水平井含水上升模式的含水上升率進行了研究,研究結(jié)果表明,目前哈得遜東河砂巖油藏中模式3和模式5的開發(fā)效果好;模式1、模式6的開發(fā)效果較好;模式2和模式4的開發(fā)效果一般。利用甲型水驅(qū)曲線、乙型水驅(qū)曲線、丙型水驅(qū)曲線、丁型水驅(qū)曲線4種水驅(qū)曲線對6種含水模式的可采儲量進行預(yù)測,模式1的可采儲量明顯高于其他5類模式的可采儲量,結(jié)合模式1的開發(fā)效果一般,所以進行可以考慮對模式1的水平井優(yōu)先進行調(diào)整。建立4種模式典型井的概念模型,通過數(shù)值模擬研究避水高度、夾層、日產(chǎn)液量以及油水粘度比等對含水上升的影響。通過研究發(fā)現(xiàn):模式1的主要影響因素是避水高度、夾層、日產(chǎn)液量以及油水粘度比;模式2的主要影響因素為日產(chǎn)液量和油水粘度比;模式4的主要影響因素為:避水高度、夾層、日產(chǎn)液量;模式5主要的影響因素為:夾層、日產(chǎn)液量以及油水粘度比。針對4種模式提出了相應(yīng)的控水措施,模式1的主要控水措施為:(1)充分利用已有隔夾層計算臨界產(chǎn)量,并在臨界產(chǎn)量以下生產(chǎn);(2)避免對該模式井的酸化。模式2的主要控水措施為:(1)采取補孔、堵水的措施;(2)純油區(qū)新設(shè)計水平井時應(yīng)先考慮水平井的位置,然后考慮其他因素的影響。模式4的主要措施為:(1)在開發(fā)過程中要防止模式4向模式5轉(zhuǎn)變,主要方法是轉(zhuǎn)注以及部分井補孔等措施;(2)模式4中也存在鈣質(zhì)夾層,與模式1一樣不能采用酸化壓裂的措施。模式5的主要措施是:(1)達到經(jīng)濟極限含水的井進行關(guān)井;(2)遠離油水兩相區(qū)的水平井注入人工隔夾層。
[Abstract]:The Donghe sandstone reservoir in the Hudson oilfield is an edge and bottom water reservoir. With the exploitation of the horizontal well, the horizontal well in the oil and water two phase area of Hudson reservoir is prone to produce bottom water coning in the exploitation of horizontal well, and the deformation of the oil and water interface rises in cone shape, and the water content is fast in horizontal well at the edge of the pure oil area. As a whole, the development of the edge and bottom water reservoir is short of water time. The water cut in the bottom water reservoir rises too fast, and the low oil price will affect the economic benefit of the oilfield production today. In this paper, the Donghe sandstone reservoir in Hudson oil reservoir is studied in the following aspects. The rising pattern of water cut in the reservoir: classifying the rising type of water cut in the horizontal well of Hudson Donghe sandstone reservoir, summarizing the water cut rising mode of the Hudson oil field horizontal well. On this basis, the water cut rise rate of each model is studied and the recoverable reserves of each model are predicted. The water cut mechanism of each model is studied at the last. According to the characteristics of each model, the corresponding water control measures are put forward. Through the analysis of the production data of 95 horizontal wells in the sandsson Donghe sandstone reservoir, the 95 wells are divided into two kinds of wells with no water recovery period and open well and water well. On this basis, water content is used as the longitudinal coordinate and the cumulative oil production is the horizontal coordinate curve to analyze water cut. The changes in the water cut model of the horizontal wells in the Hudson Donghe sandstone reservoir are divided into 6 models. Model 1: has a slow rise in the period of anhydrous oil recovery; mode 2: has a fast rising type in the period of anhydrous oil recovery; model 3: has water wave type in the period of anhydrous oil recovery; mode 4: open well see slow and slow rising type of water; mode 5: open well see rapid rising type of water; Model 6: open well shows water bearing wave type. The water cut rise rate of water cut model of 6 horizontal wells in Hudson Donghe sandstone reservoir is studied. The results show that the development effect of mode 3 and mode 5 in Hudson Donghe sandstone reservoir is good at present; model 1, model 6 development effect is better, mode 2 and model 4 have general development effect. The recoverable reserves of 6 water cut modes are predicted by 4 water flooding curves of type a water drive curve, type B water drive curve, C water drive curve, and type water flooding curve, and the recoverable reserves of mode 1 are obviously higher than other 5 types of model, and the development effect of model 1 is general, so the horizontal well of model 1 can be considered as priority. The concept model of 4 typical models is set up to study the effect of water height, interlayer, daily liquid volume and viscosity ratio of oil and water on water cut rise by numerical simulation. Through the study, it is found that the main influencing factors of model 1 are water height, interlayer, daily liquid quantity and oil water viscosity ratio, and the main influencing factors of model 2 are day The main influencing factors of mode 4 are water avoiding height, interlayer and daily liquid quantity, and the main influencing factors of mode 5 are the interlayer, the daily liquid quantity and the oil and water viscosity ratio. The corresponding water control measures are put forward for the 4 modes, and the main water control measures of mode 1 are as follows: (1) the critical production of the existing intercalated intercalation is fully utilized, and Production below the critical output; (2) avoid acidification of the model well. The main water control measures of model 2 are: (1) take holes and water plugging measures; (2) the position of horizontal wells should be considered first in the newly designed horizontal wells in pure oil area, and the influence of other factors should be considered. The main measures of mode 4 are: (1) prevent mode 4 to mode 5 during the development process. Transformation, the main method is the transfer and part of hole filling and other measures; (2) there is also calcareous interlayer in mode 4, which can not be acidified with mode 1. The main measures of mode 5 are: (1) reach the well with the economic limit water cut; (2) the horizontal wells far away from the oil-water two phase area into the artificial interlayer.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE343

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本文編號：1947982