本文選題：H307—X46區(qū) + 延9�。� 參考：《西北大學(xué)》2015年碩士論文

【摘要】：本文以精細油藏描述理論為指導(dǎo),在對儲層特征充分認(rèn)識的基礎(chǔ)上,結(jié)合油藏動態(tài)特征和儲層特征,針對低滲透非均質(zhì)巖性油藏,深化對胡尖山油田H307—-X46區(qū)侏羅系延9、延10油藏的動態(tài)特征認(rèn)識,細致研究油藏各生產(chǎn)參數(shù)、油水運動規(guī)律,進行動態(tài)評價,對于油藏開發(fā)中產(chǎn)生的問題進行深入剖析,找出控制因素,提出調(diào)整對策,幫助油藏持續(xù)高效開發(fā),實現(xiàn)穩(wěn)油控水。研究中取得的主要認(rèn)識和建議如下：(1)研究區(qū)構(gòu)造上整體呈現(xiàn)東高西低的西傾單斜構(gòu)造局面,局部發(fā)育近東—西方向的小型鼻隆及構(gòu)造低值區(qū)；延9為辮狀河三角洲平原亞相,延10為辮狀河亞相；油藏類型為彈性溶解氣驅(qū)的構(gòu)造—巖性油氣藏,雖然全區(qū)底水較發(fā)育,但是水油體積比僅為6.62,屬于底水不活躍型,需要在開采過程中注水以及時補充地層能量。(2)在已知目前各區(qū)塊的井網(wǎng)密度和流體粘度性質(zhì)情況下,以各區(qū)塊儲層有效厚度、有效滲透率為重要地質(zhì)參數(shù),采取油藏工程計算方法得出研究區(qū)中各區(qū)塊合理采油速度分別為：H307區(qū)塊2.08%、A62區(qū)2.10%、X46區(qū)2.09%,進而得出各區(qū)合理采液強度分別為：H307區(qū)1.13m3/(m·d)、A62區(qū)1.14m3/(m·d)、X46區(qū)0.83m3/(m·d),對照該合理值,認(rèn)為目前H307區(qū)和X46區(qū)采液強度要適當(dāng)降低。(3)以合理采液強度為基準(zhǔn),三個區(qū)塊合理的注水強度分別為A62區(qū)3.43m3/ (m·d)、H307區(qū)3.39m3/(m·d),X46區(qū)2.5m3/(m·d)。結(jié)合油藏目前壓力保持水平,A62區(qū)需要對應(yīng)減少注水,H307區(qū)則需要稍微增加注水,X46區(qū)壓力保持水平較好,調(diào)整時應(yīng)將采液強度與注水強度同時調(diào)整。(4)影響油井單井產(chǎn)能的主要因素有儲層物性和構(gòu)造特征兩點,表現(xiàn)為：儲層物性越好產(chǎn)能越高,高產(chǎn)區(qū)多位于構(gòu)造高值帶上,另外,增產(chǎn)措施的實施也是不可忽略的一個重要因素；底水發(fā)育情況、儲層非均質(zhì)特征等因素,雖對單井產(chǎn)能也有一定影響,但不是主要因素。(5)研究區(qū)見效特征可分為四大類,分別是見效穩(wěn)定型、見效上升型、見效即見水型和措施見效型,注水見效井以見效上升型為主,占到87.4%。經(jīng)分析,控制油井見效的主要地質(zhì)因素有：沉積相和砂體展布及其砂體連通狀況、儲層物性和非均質(zhì)性。H307區(qū)和X46區(qū)與A62區(qū)相比,前者砂體雖然厚度較小,但連通狀況較好,平均滲透率比后者高出3-4×10-3μm2,滲透率非均質(zhì)性也較后者弱,夾層也不甚發(fā)育,H307區(qū)和X46區(qū)與A62區(qū)見效比例相比,也高出10個百分點。(6)研究區(qū)見效時間長短主要受控于儲層物性和注采井距影響。H307區(qū)和X46區(qū)主要開采層位為延92和延93,其滲透率平均值分別為13.38×10-3μm2和14.58×10-3μm2,物性較好,見效期也較快,平均僅有3個多月；而A62區(qū)主要開采層位為延101,其平均滲透率則只有10.71×10-3μm2,該區(qū)塊見效時間也較長,平均在6個月以上；H307區(qū)和X46區(qū)井距為433m,A62區(qū)井距為520m,井距越長,見效時間也越長。(7)經(jīng)分析,可將區(qū)內(nèi)剩余油主要分為三種類型,第一種受沉積控制；第二種受非均質(zhì)性控制；第三種則是井網(wǎng)未控制到的油層。建議：為解決注采井間矛盾、維持油藏穩(wěn)產(chǎn)、挖潛剩余油,需要對注采井組間射孔不對應(yīng)井進行補孔,底水高含水井降低采液強度或者對底水進行封堵,長期注水不見效及見效后快速見水井組實施雙向調(diào)剖。
[Abstract]:Guided by fine reservoir description theory, on the basis of fully understanding of reservoir characteristics, combining reservoir dynamic characteristics and reservoir characteristics, the dynamic characteristics of Jurassic Yan 9 and Yan 10 reservoir in H307 - -X46 area of Hu Jianshan oilfield are deepened, and the production parameters of oil reservoirs and oil and water movement rules are carefully studied. The main understanding and suggestions made in the study are as follows: (1) in the study area, the whole body presents the West tilting monocline structure situation in the East High West low, and the local development. The small nasal uplift and low value zone in the near east to the West; the extension 9 is the braided river delta plain subfacies, and the extension 10 is the braided river subfacies; the reservoir type is the structural lithologic reservoir with elastic dissolving gas drive. Although the bottom water is more developed in the whole region, the water and oil volume ratio is only 6.62 and the bottom water is inactive. In time, the formation energy is supplemented. (2) under the condition of well network density and fluid viscosity of each block, the effective permeability is an important geological parameter with the effective thickness and effective permeability of each block. The reservoir engineering calculation method is adopted to distinguish the reasonable oil recovery speed of each block in the study area: H307 block 2.08%, A62 area 2.10%, and X46 area 2.09%, and then, It is concluded that the rational extraction strength of each area is H307 region 1.13m3/ (M / D), A62 region 1.14m3/ (M / D) and X46 region 0.83m3/ (M D). Zone 2.5m3/ (M. D). Combined with the current reservoir pressure maintenance level, A62 region needs to reduce water injection, H307 area needs a little increase of water injection, X46 zone pressure keeping level is better, the adjustment should adjust the strength and water injection intensity at the same time. (4) the main factors affecting the productivity of single well have two points of reservoir physical property and structural characteristics. The higher the productivity is, the higher the productivity is, the high yield area is located on the structure high value zone. In addition, the implementation of the increasing production measures is also an important factor that can not be ignored. The development of the bottom water and the heterogeneity of the reservoir have some influence on the productivity of the single well, but it is not the main factor. (5) the effective characteristics of the study area can be divided into four major categories, which are to see respectively The main geological factors for controlling the efficiency of the oil well are the distribution of the sedimentary and sand bodies and the connectedness of the sand bodies, and the reservoir physical and non homogeneous.H307 region and the X46 area are compared with the A62 region, the former sand body, although the sand body is the former, though the effect is stable and effective. But the thickness is smaller, but the connection condition is better, the average permeability is 3-4 * 10-3 Mu M2 higher than the latter, the permeability heterogeneity is less than the latter, and the interlayer is not well developed. The H307 and X46 areas are also 10 percentage points higher than the A62 region. (6) the effect time of the study area is mainly controlled by the reservoir physical property and the injection production well distance affecting.H307 zone and X The main mining strata in the 46 area are extension 92 and extension 93, with the average permeability of 13.38 * 10-3 Mu m2 and 14.58 x 10-3 Mu m2, which have better physical property and more effective time, with an average of only 3 months, while the main mining horizon in A62 area is 101, and the average permeability is 10.71 * 10-3 m2, and the block is also longer, average for more than 6 months; H3 The well spacing in 07 area and X46 area is 433M, A62 well spacing is 520m, the longer the well spacing is, the longer the effective time is. (7) after analysis, the remaining oil in the area can be divided into three types, the first is controlled by deposition, the second is controlled by non homogeneity, and the third is the oil layer uncontrolled by the well network. In order to produce and dig the remaining oil, it is necessary to fill the hole between the injection and production wells, and the high water well in the bottom water can reduce the strength of the mining fluid or block the bottom water. After the long-term water injection is not effective and effective, the water well group can be quickly divided into two direction profile control.
【學(xué)位授予單位】：西北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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