空壓機(jī)在打地?zé)峋淳械膽?yīng)用

打井的時(shí)候洗井是成井工藝的一個(gè)承前啟后的關(guān)鍵工序。工程建設(shè)中地?zé)峋话愣家?jīng)過簡(jiǎn)單或復(fù)雜的洗井工藝，并采用多種洗井方法。特殊的情況下一種洗井方法多次重復(fù)使用，使地?zé)峋乃?、水溫達(dá)到設(shè)計(jì)或合同指標(biāo)的要求，同時(shí)盡量達(dá)到佳水量及水溫，工程項(xiàng)目質(zhì)量合格，后經(jīng)抽水試驗(yàn)和采集水樣化驗(yàn)，通過水量和水質(zhì)檢驗(yàn)。

Well washing is a key process of well completion technology. In engineering construction, geothermal wells usually have to go through simple or complex well flushing technology, and use a variety of well flushing methods. Under special circumstances, a well washing method is repeatedly used to make the water quantity and temperature of geothermal well meet the requirements of design or contract indicators, and try to achieve the best water quantity and temperature at the same time. The quality of the project is qualified. After pumping test and water sample test, it passes the water quantity and water quality inspection.

壓縮空氣洗井是比較常用的方法，需要空壓機(jī)提供壓縮空氣(正、反循環(huán))，震蕩、抽吸內(nèi)沖洗液，疏通裂隙并排除沉沙。

Compressed air well flushing is a common method, which requires air compressor to provide compressed air (positive and negative circulation), vibrate and pump internal flushing fluid, dredge cracks and remove sediment.空壓機(jī)洗井裝置有并列式和同心式兩種,可視況選用。此乃借助空壓機(jī)的風(fēng)壓,使孔內(nèi)水位產(chǎn)生振蕩,沖擊井管,破壞泥皮,并將孔底沉淀物一并排出地面。空壓機(jī)洗井是常用的洗井方法之一。在通常的情況下,其洗井效果較好。

There are two kinds of air compressor well washing devices, parallel type and concentric type, which can be selected according to the actual situation. With the help of the air pressure of the air compressor, the water level in the hole oscillates, the well pipe is impacted, the mud skin is damaged, and the sediment at the bottom of the hole is discharged from the ground. Air compressor well flushing is one of the common well flushing methods. In general, the effect of well flushing is better.

在相同的井內(nèi)，由于洗井方法不同(洗井液上返通道不同)，其相同直徑的巖屑的自由懸浮速度也不同，用相同的空壓機(jī)洗井，反循環(huán)的排巖屑能力比正循環(huán)要強(qiáng)，排出的巖屑顆粒比正循環(huán)要大。

In the same well, the free suspension velocity of cuttings with the same diameter is different due to different well washing methods (different upward return channels of well washing fluid). When using the same air compressor to wash the well, the cuttings discharge capacity of reverse circulation is stronger than that of positive circulation, and the cuttings discharged are larger than that of positive circulation.

井中的水柱上下振蕩幅度可達(dá)幾百米，幾百米的水柱壓力的瞬間釋放有助于含水層的疏通出水。根據(jù)出水持續(xù)時(shí)間和間斷時(shí)間的比例可估算地?zé)峋鏊芰?。壓縮空氣洗井結(jié)束后，一般采用水泵抽水洗井試水。

The fluctuation amplitude of water column in the well can reach several hundred meters, and the instantaneous release of water column pressure of several hundred meters is helpful to dredge the aquifer. According to the ratio of the duration of water production to the interruption time, the water production capacity of geothermal wells can be estimated. After the completion of compressed air well flushing, the water pump is generally used for well flushing test.

一臺(tái)四級(jí)加壓、流量十立方米每分鐘、很大壓力二十五兆帕的高壓空壓機(jī)能把兩千多米深的水柱頂出地面，井內(nèi)一瞬間形成負(fù)壓力，使地層里的水自然的沖出，能有用提高洗井速度。

A four stage pressurized high pressure air compressor with a flow rate of 10 cubic meters per minute and a very high pressure of 25 MPA can push a water column more than 2000 meters deep out of the ground. Negative pressure is formed in the well in a moment, so that the water in the formation can be washed out naturally, which can effectively improve the well washing speed.