【摘要】：我國大部分注水開發(fā)油田已處于開發(fā)后期,油井含水高達90%以上。大慶油田D區(qū)就目前的開發(fā)效果看,部分區(qū)塊低產(chǎn)低效井?dāng)?shù)多,滯留區(qū)多,平面開采不均衡,儲量動用程度低,措施挖潛效果差,還有一些區(qū)塊存在注水壓力增長速度較快,部分井投產(chǎn)后即高含水,全區(qū)見水井?dāng)?shù)較多,且含水上升速度快等問題。示蹤劑測試技術(shù)便是一種認識油藏非均質(zhì)性的技術(shù),可以利用井間示蹤劑技術(shù),通過觀察示蹤劑在采油井中的開采動態(tài),如示蹤劑在生產(chǎn)井的突破時間,峰值的大小及個數(shù)、相應(yīng)注入流體的總量、采出的示蹤劑數(shù)量等參數(shù),可定性地判斷地層中高滲透條帶、大孔道、天然裂縫、人工裂縫、氣竄通道、封閉斷層、封閉隔層的存在與否,而且可定量地求出高滲條帶、大孔道、天然裂縫、人工裂縫、氣竄通道的有關(guān)地層參數(shù),如高滲層厚度、滲透率、以及孔道半徑等地層參數(shù),為今后開發(fā)方案調(diào)整及調(diào)剖、堵水等效果評價提供科學(xué)依據(jù),指導(dǎo)制定可行的提高油田采收率的調(diào)整措施。針對大慶油田D區(qū)的四個區(qū)塊,優(yōu)選20口注水井開展井間示蹤劑監(jiān)測試驗。本文研究了區(qū)塊的地質(zhì)特征和開發(fā)現(xiàn)狀,總結(jié)了化學(xué)示蹤劑、放射性同位素示蹤劑、非放射性示蹤劑、微量物質(zhì)示蹤劑優(yōu)缺點以及篩選原則,綜合評價了各類示蹤劑的性能,選擇出適合各個井組的示蹤劑,確定示蹤劑合適的用量,在區(qū)塊內(nèi)進行井間示蹤劑試驗。然后對對應(yīng)采出井進行取樣分析與示蹤劑濃度檢測,通過分析示蹤劑檢測結(jié)果,包括示蹤劑的突破時間,峰值時間,峰值大小,以及峰值持續(xù)時間等,得出區(qū)塊內(nèi)斷層的存在與否,油水井組間連通關(guān)系,砂體的發(fā)育情況,目標井見水來水方向,以及油層的裂縫發(fā)育情況。研究成果可以為大慶油田D區(qū)的水驅(qū)開發(fā)方案調(diào)整提出合理建議。
[Abstract]:Most of the waterflooding oil fields in China are in the late stage of development, and the water cut of oil wells is more than 90%. According to the current development effect in D area of Daqing Oilfield, there are many low production and low efficiency wells in some blocks, many remaining areas, uneven planar exploitation, low reserve production, poor potential tapping measures, and some blocks have relatively fast water injection pressure growth rate. Some wells have high water cut after they are put into production, many wells are found in the whole area, and the water cut rises rapidly. Tracer testing technology is a technique to recognize reservoir heterogeneity. It can use cross-well tracer technology to observe the recovery performance of tracer in oil well, such as the breakthrough time of tracer in production well, the size and number of peak value. The parameters such as the total amount of injected fluid and the amount of tracer produced can be used to determine qualitatively the existence of high permeability zones, large pore channels, natural fractures, artificial fractures, gas channeling channels, closed faults, and sealed interlayers in the formation. In addition, the formation parameters such as the thickness, permeability and radius of high permeability zone, large pore channel, natural fracture, artificial fracture and gas channeling channel can be quantitatively calculated for the adjustment and profile control of the development plan in the future. The evaluation of water shutoff and other effects provides scientific basis to guide the formulation of feasible adjustment measures to improve oil recovery. According to the four blocks in D area of Daqing Oilfield, 20 water injection wells were selected to carry out cross-well tracer monitoring test. This paper studies the geological characteristics and development status of the block, summarizes the advantages and disadvantages of chemical tracer, radioisotope tracer, non-radioactive tracer, trace material tracer and screening principle, and comprehensively evaluates the properties of various tracers. The tracer suitable for each well group was selected, and the appropriate amount of tracer was determined, and the cross-well tracer test was carried out in the block. Then sampling analysis and tracer concentration detection are carried out on the corresponding production wells, and the results of tracer detection are analyzed, including the breakthrough time of tracer, the peak value, and the peak duration, etc. Whether the fault exists in the block or not, the connection between oil and water wells, the development of sand body, the direction of water coming from the target well, and the fracture development of the reservoir are obtained. The research results can provide reasonable suggestions for the adjustment of water drive development scheme in D area of Daqing Oilfield.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE357.6

【共引文獻】

相關(guān)期刊論文 前2條

1 于瑞香;張?zhí)┥?周偉生;;油田示蹤劑技術(shù)[J];工業(yè)水處理;2007年08期

2 謝佃和;蔣忠明;于能文;;利用放射性同位素示蹤技術(shù)評價水驅(qū)狀況[J];新疆石油天然氣;2008年04期

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本文編號：2347485