本文選題：水平井　切入點(diǎn)：流入動(dòng)態(tài)　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】：隨著石油工業(yè)的發(fā)展,低滲透油氣藏逐漸擔(dān)當(dāng)了增產(chǎn)上儲(chǔ)的重任。低滲透油藏的一個(gè)重要特點(diǎn)就是產(chǎn)量低,開采經(jīng)濟(jì)效益差。需要加強(qiáng)低滲透油氣藏勘探開發(fā)的研究,對(duì)低產(chǎn)井進(jìn)行精細(xì)化管理。 水平井具有泄油面積大、單井產(chǎn)量高的特點(diǎn),越來越多的低滲透油氣藏采用水平井開采來提高產(chǎn)量,提高開發(fā)效益。 HQ油田是典型的低滲、低壓、低產(chǎn)油氣區(qū),即使采用水平井開采,其成本仍然居高不下。在原油價(jià)格持續(xù)低位運(yùn)行的現(xiàn)實(shí)情況下,降低開采成本,提高經(jīng)濟(jì)效益顯得更加重要。 本文以HQ油田低產(chǎn)水平井為研究對(duì)象,結(jié)合現(xiàn)場(chǎng)實(shí)際,建立低產(chǎn)水平井合理的間開工作制度。 (1)搜集HQ油田的地質(zhì)資料、流體分析資料、儲(chǔ)層物性資料和單井生產(chǎn)資料,充分了解該地區(qū)的油藏及生產(chǎn)特征。 (2)調(diào)研水平井產(chǎn)能方程并進(jìn)行驗(yàn)證,分析井底附近地層為油氣水三相滲流時(shí)產(chǎn)能損失的原因,在此基礎(chǔ)上選擇合適的油氣兩相無因次流入動(dòng)態(tài)方程,采用Petrobras計(jì)算直井油氣水三相流入動(dòng)態(tài)的方法,得到水平井油氣水三相流入動(dòng)態(tài)曲線。 (3)分析影響抽油泵泵效的因素,總結(jié)沉沒度、含水率和氣油比對(duì)泵效的影響。結(jié)合HQ油田生產(chǎn)數(shù)據(jù),歸納出沉沒度和沉沒壓力與泵效的一般規(guī)律,以及計(jì)算泵效的經(jīng)驗(yàn)關(guān)系式。 (4)結(jié)合水平井IPR方程和泵效與沉沒壓力的關(guān)系式,優(yōu)選下泵深度、泵徑和間開生產(chǎn)地層產(chǎn)液量變化區(qū)間,得到合理的開井關(guān)井時(shí)間,使間開生產(chǎn)產(chǎn)量等于常開生產(chǎn)產(chǎn)量。 本文的研究為低滲透油藏水平井流入、流出動(dòng)態(tài)分析及制定合理間開工作制度提供了一定的理論依據(jù)和應(yīng)用基礎(chǔ)。
[Abstract]:With the development of petroleum industry, low permeability reservoirs have gradually assumed the important role of increasing production and storage. One of the important characteristics of low permeability reservoirs is low production and poor economic benefits of exploitation. Therefore, it is necessary to strengthen the research on exploration and development of low permeability reservoirs. Fine management of low production wells. Horizontal wells have the characteristics of large oil discharge area and high single well production. More and more low permeability reservoirs use horizontal wells to improve production and development efficiency. HQ oil field is a typical low permeability, low pressure and low production oil and gas area. Even if horizontal wells are used to produce oil, its cost is still high. It is more important to reduce production cost and improve economic benefit under the condition of continuous low crude oil price operation. In this paper, the low production horizontal well in HQ oilfield is taken as the research object, and the reasonable interworking system of the low production horizontal well is established in combination with the field practice. 1) collecting geological data, fluid analysis data, reservoir physical property data and single well production data of HQ oilfield, and fully understanding the reservoir and production characteristics in this area. 2) investigating and verifying the productivity equation of horizontal well, analyzing the reason of productivity loss when the formation near bottom hole is three phase seepage of oil, gas and water, on the basis of which, selecting the appropriate dynamic equation of dimensionless inflow of oil and gas. The Petrobras method is used to calculate the three phase inflow performance of oil, gas and water in a vertical well, and the dynamic curve of the three phase inflow of oil, gas and water in a horizontal well is obtained. 3) analyzing the factors affecting pump efficiency, summing up the influence of submergence degree, water cut and gas-oil ratio on pump efficiency, combining production data of HQ oilfield, generalizing the general law of submergence degree, sinking pressure and pump efficiency, and calculating the empirical relationship of pump efficiency. 4) combining the IPR equation of horizontal well and the relationship between pump efficiency and sunk pressure, the variation interval of pump depth, pump diameter and liquid production rate in production formation is selected, and the reasonable open well shutoff time is obtained, which makes the production rate equal to the normal open production rate. The research in this paper provides a theoretical basis and application basis for the analysis of horizontal well inflow and outflow performance in low permeability reservoir and for the formulation of reasonable inter-working system.
【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)】：TE32

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