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    2. 濟南科邦機械設備有限公司您身邊的濟南空壓機廠家!
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      空氣壓縮機在打地熱井洗井中的運用
      Time:2019-05-11 11:04:29       來源:http://www.592free.com/      

        打井的時候洗井是成井工藝的一個承前啟后的關鍵工序。工程建設中地熱井一般都要經過簡單或復雜的洗井工藝,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使用,使地熱井的水量、水溫達到設計或合同指標的要求,同時盡量達到最佳水量及水溫,工程項目質量合格,最后經抽水試驗和采集水樣化驗,通過水量和水質檢驗。

        Well flushing is a key process in well completion process. Geothermal wells in engineering construction usually undergo simple or complex well washing process, and adopt a variety of well washing methods. Under special circumstances, a well-washing method is repeatedly used to make the water quantity and temperature of geothermal wells meet the requirements of design or contract indexes, and at the same time to reach the optimum water quantity and temperature as far as possible. The quality of the project is qualified. Finally, the water quantity and quality are tested by pumping test and sampling test.
        壓縮空氣洗井是比較常用的方法,需要空壓機提供壓縮空氣(正、反循環),震蕩、抽吸內沖洗液,疏通裂隙并排除沉沙。
        Compressed air well washing is a common method, which requires air compressor to provide compressed air (positive and reverse circulation), oscillation, suction of internal flushing fluid, dredge cracks and remove sediment.
        空壓機洗井裝置有并列式和同心式兩種,可視況選用。此乃借助空壓機的風壓,使孔內水位產生振蕩,沖擊井管,破壞泥皮,并將孔底沉淀物一并排出地面??諌簷C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 situation. By means of the air pressure of the air compressor, the water level in the hole oscillates, the well pipe is impacted, the mud is destroyed, and the sediment at the bottom of the hole is discharged from the ground. Air compressor well washing is one of the commonly used methods. Under normal conditions, the well washing effect is better.
        水泵和空壓機洗井。在孔徑較大而又較深的鉆井中,常常采用這種聯合洗井方法,即將鉆桿下至泥漿沉淀物附近,借助水泵將沉淀物沖至一定的高度,再借助空壓機將沉淀物排出地面。這種方法對于含水層埋藏較深、泥漿沉淀物較多的井孔,其效果較好。例如在江淮紅層缺水地區,地層為紫紅色粘土巖,坍塌掉塊嚴重,采用泥漿鉆進。由于孔較深,鉆井時間也長,泥漿糊死井壁。這樣的就采用這種方法。
        Pumps and air compressors wash wells. In larger and deeper drilling, this combined well washing method is often used, that is, the drill pipe is down to the mud sediment nearby, the sediment is flushed to a certain height by means of water pump, and the sediment is discharged from the ground by means of air compressor. This method has better effect for boreholes with deeper aquifer and more mud sediment. For example, in the water-deficient areas of the red beds in the Yangtze-Huaihe River, the strata are purple-red clay rocks, and the collapse blocks are serious, so mud drilling is used. Because of the deep hole and long drilling time, the mud pastes the dead wall. This is the way to do it.
        壓縮空氣技術在地熱井洗井中的應用主要是運用于地熱井壓縮空氣洗井,地熱井壓縮空氣洗井常用石油鉆井行業的高壓高排量空氣壓縮機,一般用空氣壓縮機的能力為十立方米美一百五十千克。采用反沖洗的方法,風管采用鉆桿,一般下入深度五百到一千米。壓縮空氣洗井產生間斷噴流的出水方式(水量大時連續出水),噴流高度可達幾米。洗井機由風管和出水管兩部分組成,采用并列式安裝方式。壓縮空氣經風管下行到達出水管一定的深度時,與出水管內的液體混合,在出水管內形成負壓力,使得出水管內的液體向上進行運動,下部的泥砂及巖屑隨即進入出水管內,形成氣,液、固三相混合物,一同排出井外。其洗井機理與正循環相似。
        The application of compressed air technology in geothermal well flushing is mainly used in geothermal well flushing with compressed air. The high pressure and high displacement air compressor commonly used in oil drilling industry in geothermal well flushing with compressed air has the capacity of 10 cubic meters and 150 kilograms. Backwash method is adopted. Drill pipe is used for air duct. Generally, the depth of down is 500 to 1000 meters. Compressed air flushing produces intermittent jet outflow (continuous water outflow when the water volume is large), and the jet height can reach several meters. The well washer is composed of air duct and water outlet pipe. It is installed in parallel. When the compressed air reaches a certain depth of the outlet pipe through the air duct, it mixes with the liquid in the outlet pipe and forms negative pressure in the outlet pipe, which makes the liquid in the outlet pipe move upward. Then the mud sand and rock debris in the lower part enter the outlet pipe and form a mixture of gas, liquid and solid, which is discharged out of the well together. The mechanism of well washing is similar to that of positive circulation.
        在相同的井內,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,用相同的空壓機洗井,反循環的排巖屑能力比正循環要強,排出的巖屑顆粒比正循環要大。
        In the same well, the free suspension velocity of cuttings with the same diameter is different due to different washing methods (different upstream and downstream passages of flushing fluid). When flushing with the same air compressor, the reverse circulation cuttings discharge ability is stronger than the positive circulation, and the discharged cuttings particles are larger than the positive circulation.
                                          濟南空壓機
        井中的水柱上下振蕩幅度可達幾百米,幾百米的水柱壓力的瞬間釋放有助于含水層的疏通出水。根據出水持續時間和間斷時間的比例可估算地熱井出水能力。壓縮空氣洗井結束后,一般采用水泵抽水洗井試水。
        The oscillation range of the water column in the well can reach several hundred meters. The instantaneous release of the water column pressure of several hundred meters helps to dredge the water from the aquifer. According to the ratio of the time duration and the interruption time, the water output capacity of geothermal wells can be estimated. After the completion of compressed air well washing, water pump is usually used for well testing.
        一臺四級加壓、流量十立方米每分鐘、很大壓力二十五兆帕的高壓空壓機能把兩千多米深的水柱頂出地面,井內一瞬間形成負壓力,使地層里的水自然的沖出,能有效提高洗井速度。
        A high-pressure air compressor with four-stage pressure, 10 cubic meters of flow per minute and 25 MPa of high pressure can eject a water column more than 2,000 meters deep from the surface and form negative pressure in the well instantaneously, which can make the water in the formation wash out naturally and effectively improve the well washing speed.
        洗井是空壓機比較活用的一種用途,也是建筑施工行業空壓機重要的體現。
        Well washing is a relatively flexible use of air compressors, but also an important manifestation of air compressors in construction industry.
       

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