本文選題：聚合物驅(qū) + 開(kāi)發(fā)指標(biāo)　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：聚合物驅(qū)油技術(shù)已成為我國(guó)油田三次采油的主要方法之一,影響聚合物驅(qū)的開(kāi)發(fā)效果的因素有很多,因此需要研究其主要影響因素并進(jìn)行聚合物驅(qū)階段的動(dòng)態(tài)預(yù)測(cè)。根據(jù)單井的靜態(tài)分類和井組分類標(biāo)準(zhǔn)將X區(qū)塊的井組劃分為A、B、C、D四類井組,然后對(duì)四類井組的實(shí)際生產(chǎn)數(shù)據(jù)進(jìn)行統(tǒng)計(jì)分析得到了分類井組的注入?yún)?shù)、采出參數(shù)、注采比等開(kāi)發(fā)指標(biāo)變化規(guī)律,運(yùn)用Eclipse軟件研究了各因素對(duì)開(kāi)發(fā)指標(biāo)的影響。結(jié)合了灰色關(guān)聯(lián)理論,對(duì)影響因素進(jìn)行了分析,給出了主要各個(gè)影響因素的權(quán)重。運(yùn)用增長(zhǎng)曲線方法建立了聚合物驅(qū)含水變化和產(chǎn)油量變化預(yù)測(cè)模型,并對(duì)分類井組的含水變化和產(chǎn)油量變化進(jìn)行了預(yù)測(cè)。根據(jù)實(shí)際數(shù)據(jù)統(tǒng)計(jì)及數(shù)值模擬分析研究結(jié)果表明;(1)滲透率、聚合物驅(qū)控制程度、聚合物用量、含油飽和度是影響聚合物驅(qū)階段含水變化的主要因素;(2)聚合物驅(qū)階段的采出程度的主要影響因素為聚合物用量、含油飽和度;(3)聚合物驅(qū)階段的增油變化的主要影響因素為聚合物用量、控制程度;(4)A類和B類井組的存聚率下降緩慢,C類和D類井組的存聚率下降快,噸聚增油隨著聚合物溶液的注入逐漸增加,到達(dá)低值期及回升期后趨于平穩(wěn);(5)分類井組的注入壓力主要在含水下降期和含水低值期兩個(gè)階段上升,進(jìn)入含水回升期后注入上升緩慢并趨于穩(wěn)定;(6)分類井組的注入能力存在差異,A類和B井組的階段平均注入速度較高,D類井組的階段平均注入速度最低;(7)A、B、C、D四類井組在注聚初期均在補(bǔ)充地層虧空,其中A類和B類井組在進(jìn)入含水回升期后的趨于注采平衡,而C類和D類井組一直未能達(dá)到注采平衡;(8)運(yùn)用增長(zhǎng)曲線方法建立了聚合物驅(qū)含水變化和產(chǎn)油量變化預(yù)測(cè)模型。
[Abstract]:Polymer flooding technology has become one of the main methods of tertiary oil recovery in oil fields in China. There are many factors that affect the development effect of polymer flooding, so it is necessary to study the main influencing factors and predict the dynamic state of polymer flooding stage. According to the static classification of single well and the classification standard of well group, the well group in block X is divided into four kinds of well groups, and the injection parameters and recovery parameters of the classified well groups are obtained by statistical analysis of the actual production data of the four kinds of well groups. The influence of various factors on the development index is studied by using Eclipse software. Based on the grey relation theory, the influence factors are analyzed and the weights of the main factors are given. A prediction model of water cut and oil production in polymer flooding is established by using growth curve method, and the variation of water cut and oil production of classified well groups is forecasted. According to the actual data statistics and numerical simulation analysis, the results show that the permeability, the control degree of polymer flooding, the amount of polymer, Oil saturation is the main factor affecting water cut change in polymer flooding stage. The main influencing factor of oil increasing change in polymer flooding stage is polymer dosage. The controlled degree of oil concentration is decreasing slowly in A and B well groups and decreasing rapidly in C and D well groups. With the injection of polymer solution increasing gradually, the injection pressure of the classification well group increases mainly in the two stages of water cut decline and water cut low value after reaching the low value period and rising stage. After entering the recovery period of water cut, the injection rate rises slowly and tends to be stable.) there is a difference in the injection ability of the classified well groups. There are differences in the injection capacity between the A well group and the B well group. The stage average injection rate of the D well group is higher than that of the D well group, and the stage average injection rate of the D well group is the lowest. In the early stage of polymer injection, they were replenishing the formation deficit, The A and B well groups tend to be injection-production equilibrium after entering the water cut recovery period, while the C and D well groups have failed to achieve the injection-production balance.) the water cut change and oil production change prediction model of polymer flooding has been established by using the growth curve method.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE357.46
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本文編號(hào)：1843952