早期注水

本文根据仑圩开发区的开发实践，说明了小断块油田同样适宜早期注水保持油层压力的开采方法。

This paper demonstrates that a small block-faulted oil field can be water flooded to give a high efficiency recording the field practice of Lunxu oil field .

丘陵油田是一个早期注水开发的低孔、低渗性油田，目前已达到了中高期含水阶段。

With low porosity and permeability , Qiuling oilfield was produced by waterflooding in early stage , and have entered medium to high water cut stage at present .

我国油田储层多为陆相沉积，非均质性严重，且近90%的油田均采用早期注水开发方式。

In our country , the majority pay zones of the oilfields are continental deposits with serious heterogeneity and nearly 90 % oilfields have assumed water-flooding development regime at the early development stage .

低渗小断块油藏控制单元井间连通性差，边界封闭，地层能量有限，开采中地层能量下降快，难以采用早期注水等方式大规模开采。

It is difficult for complicated small fault block , low permeability reservoir to be recovered by commercial-scale waterflooding in early stage because of poor inter-well communication , boundary seal , and limited reservoir energy .

受多断层切割的复杂断块油藏，所形成的众多小断块单元油藏井间连通性差、边界封闭、地层能量有限、开采中地层能量下降快、难以采用早期注水等方式大规模开采。

It is difficult for complicated small fault block oil reservoir unit by many faults to commercial-scale operation by water injection because of communication difference among wells , boundary seal , producing energy finite , producing energy falling soon during exploitation .

系统研究了水平井与常规井网互相协调的注采方式，论证了采取早期注水对保持水平井区地层压力和提高水平井稳定产量的重要性。

It studies the injection production method with which horizontal well and normal pattern coordinate each other and proves the significance of early water injection for keeping reservoir pressure in the horizontal well area and improving the stable production of horizontal well .

目前许多实施早期注水开发的稠油油藏含水上升快，已进入中、高含水开发阶段，其中不少区块的采收率比较低，经济效益差，急需转换开采方式。

The water cut of many heavy oil reservoirs with water flooding is increasing now . It has been in high water cut stage . Some of them have a low recovery and a little economic benefit . They urgent need to change producing method .

中国油田开发的基本方式和开采方针是早期内部注水、逐步强化开采。

The policies of early-stage inter-water-flooding and stepwise enhanced recovery are the major ways for oilfield development in China .

注水模式为早期温和注水，注水强度逐渐增强，在饱和压力附近达到注采平衡。

The water-injection pattern is characterized by " early moderate injection , gradual increase of injection and making a balance between injection and production near saturation pressure " .

我国油田早期多使用了注水开发，且目前大多都已经进入到高含水期。

Chinese oil field in the early period waterflooding , and most of all into the high water cut stage .