本文關(guān)鍵詞： 鄂爾多斯 致密低滲透油藏 平注平采 整體壓裂 設(shè)計(jì)優(yōu)化 洛河油田　出處：《長江大學(xué)學(xué)報(bào)(自科版)》2016年34期 　論文類型：期刊論文

【摘要】：針對天然能量彈性開發(fā)的致密低滲透油藏水平井壓后初期產(chǎn)量高、產(chǎn)量遞減快、穩(wěn)產(chǎn)難度大等難點(diǎn),為了進(jìn)一步提高鄂爾多斯盆地洛河油田長7儲層的開發(fā)效益,基于儲層工程地質(zhì)特征,單井測錄井及井網(wǎng)條件,采用油藏?cái)?shù)值模擬和全三維壓裂設(shè)計(jì)軟件相結(jié)合的方法,優(yōu)化了"平注平采"水平井組的裂縫形體布局,裂縫參數(shù)及施工參數(shù)。裂縫采用不等間距交叉布縫(避開注水井水線位置),縫間距為60~112m、裂縫條數(shù)為7~9條,裂縫半長為120~150m,導(dǎo)流能力為30~40μm2·cm,遠(yuǎn)離注水水線位置的施工排量為4.0~4.5m3/min,規(guī)模為35~40m3,離水線近位置的施工排量為3.0~3.5m3/min,規(guī)模為22~28m3。通過現(xiàn)場試驗(yàn),壓后水平井試油期間日產(chǎn)油量5t,關(guān)井注水地層能量達(dá)110%時開井生產(chǎn),LH1-2-7P16井穩(wěn)定日產(chǎn)油量5.1t,LH1-2-7P18井穩(wěn)定日產(chǎn)油量3.8t,相比鄰近水平井分別提高了1.7和2.3倍,增產(chǎn)效果明顯,實(shí)現(xiàn)了區(qū)塊水平井組整體開發(fā)的技術(shù)突破,為其他類似油藏開發(fā)提供技術(shù)依據(jù)。
[Abstract]:According to the development of the natural energy dense elastic horizontal well in low permeability reservoirs after pressure high initial production, rapid production decline, stable and difficult difficulty, in order to develop benefit to further improve the Erdos Luohe basin of Chang 7 reservoir, the geological characteristics of reservoir engineering based on single well logging and well network condition, using the method of reservoir numerical simulation and the full 3-D fracturing design software combined with the optimization of the "Ping Ping injection mining horizontal wells cracks form layout, parameters and construction parameters of cracks with unequal spacing cross cloth (avoid injection wells waterline positions), the spacing is 60~112m, the number of fractures is 7~9, fracture half length is 120~150m, conductivity is 30~40 ~ M2 ~ cm, away from the water displacement waterline is 4.0~4.5m3/min, the scale of 35~40m3, from the construction displacement position for 3.0~3.5m3/min near the waterline, the size of 22~ 28m3. through the field test, pressure Oil during oil production test of 5t horizontal well, shut the water injection formation energy of 110% open wells production, LH1-2-7P16 wells in the oil production wells 5.1T, LH1-2-7P18 stable oil production was 3.8t, compared with adjacent horizontal wells were increased by 1.7 and 2.3 times, the yield increasing effect is obvious, to achieve a technological breakthrough in block level wells group development, provide the technical basis for other similar reservoir development.

【作者單位】： 中石化華北油氣分公司石油工程技術(shù)研究院;
【基金】：國家科技重大專項(xiàng)(2016ZX05048)
【分類號】：TE357
【正文快照】： 洛河油田位于鄂爾多斯盆地伊陜斜坡南部,主要開發(fā)層位為延長組長7段油層,砂體厚度在14.0~23.0m,儲層埋深淺(800~1200m),溫度在40℃左右,平均壓力系數(shù)為0.90,孔隙度主要分布在8%~14%(平均孔隙度為10.8%),滲透率主要分布在0.1~0.5mD(平均滲透率0.29mD),屬于低孔、低滲透致密砂巖，

本文編號：1491671