本文關(guān)鍵詞：QHD32-6北區(qū)選擇性堵劑性能評(píng)價(jià)研究　出處：《西安石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： QHD32-6 油田 堵水 成膠 交聯(lián)體系

【摘要】：QHD32-6油田屬于海上稠油油田,隨著油田采出程度的提高,油井出水問(wèn)題越來(lái)越嚴(yán)重。由于QHD32-6油田平臺(tái)空間小、作業(yè)周期短、開(kāi)發(fā)成本高、地質(zhì)條件復(fù)雜、綜合含水率高等問(wèn)題增大了堵水難度。本文通過(guò)研究幾種常見(jiàn)選擇性堵劑體系在QHD32-6油田油藏條件下的成膠情況,篩選出成膠性能較好的AMPS交聯(lián)體系,分別考察了聚合物濃度和交聯(lián)劑濃度對(duì)成膠性能的影響從而優(yōu)化堵劑配方(0.05%~0.1%AMPS+0.4%~0.6%Cr3+)。通過(guò)實(shí)驗(yàn)考察了p H值、配制水礦化度、溫度等因素對(duì)交聯(lián)體系成膠性能的影響,結(jié)果表明AMPS交聯(lián)體系在QHD32-6油藏條件下具有穩(wěn)定性和適應(yīng)性。采用填砂管流動(dòng)實(shí)驗(yàn)考察了堵劑的注入性、封堵性、油水選擇性和耐沖刷性,結(jié)果表明AMPS交聯(lián)體系在油藏條件下具有良好的封堵性能。選擇性堵劑作用機(jī)理的研究表明堵劑主要通過(guò)聚合物的靜態(tài)吸附、捕集、物理堵塞和動(dòng)態(tài)滯留作用實(shí)現(xiàn)堵水不堵油。根據(jù)QHD32-6油田北區(qū)B21油井基本情況,優(yōu)化設(shè)計(jì)了該井的堵水工藝參數(shù):封堵半徑為12~15m,設(shè)計(jì)了兩個(gè)段塞組合注入堵劑從而減少堵劑用量。
[Abstract]:QHD32-6 oil field belongs to offshore heavy oil field. With the improvement of oilfield production degree, the problem of oil well effluent becomes more and more serious. Because of the small platform space of QHD32-6 oilfield, the operation period is short. The problems of high development cost, complex geological conditions and high comprehensive water cut increase the difficulty of water shutoff. In this paper, the gelation of several common selective plugging agent systems in QHD32-6 oilfield reservoir is studied. The AMPS crosslinking system with good gelling property was screened out. The effects of polymer concentration and crosslinking agent concentration on the gelation properties were investigated, respectively, so as to optimize the plugging agent formula 0.05 and 0.1 amps 0.4% 0.6Cr3). The pH value was investigated experimentally. The effects of water salinity, temperature and other factors on the gelling properties of the crosslinked system. The results show that AMPS crosslinking system has stability and adaptability in QHD32-6 reservoir. The injectivity, plugging property, oil-water selectivity and scour resistance of the plugging agent are investigated by sand pipe flow test. The results show that the AMPS crosslinking system has good plugging performance under reservoir conditions, and the mechanism of selective plugging agent shows that the plugging agent is mainly adsorbed by the static adsorption of polymer. According to the basic conditions of B21 well in the north part of QHD32-6 oilfield, the water plugging process parameters of this well are optimized and designed: the plugging radius is 12 ~ 15m. A combination of two slugs was designed to inject plugging agent to reduce the amount of plugging agent.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE53;TE358.3

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